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3,500
Multi-Sensor Fuzzy Data Fusion Using Sensors with Different Characteristics
eess.SY
This paper proposes a new approach to multi-sensor data fusion. It suggests that aggregation of data from multiple sensors can be done more efficiently when we consider information about sensors' different characteristics. Similar to most research on effective sensors' characteristics, especially in control systems, ou...
electrics
3,501
Cluster Synchronization of Coupled Systems with Nonidentical Linear Dynamics
eess.SY
This paper considers the cluster synchronization problem of generic linear dynamical systems whose system models are distinct in different clusters. These nonidentical linear models render control design and coupling conditions highly correlated if static couplings are used for all individual systems. In this paper, a ...
electrics
3,502
Global stabilization of multiple integrators by a bounded feedback with constraints on its successive derivatives
eess.SY
In this paper, we address the global stabilization of chains of integrators by means of a bounded static feedback law whose p first time derivatives are bounded. Our construction is based on the technique of nested saturations introduced by Teel. We show that the control amplitude and the maximum value of its p first d...
electrics
3,503
Stochastic Battery Model for Aggregation of Thermostatically Controlled Loads
cs.SY
The potential of demand side as a frequency reserve proposes interesting opportunity in handling imbalances due to intermittent renewable energy sources. This paper proposes a novel approach for computing the parameters of a stochastic battery model representing the aggregation of Thermostatically Controlled Loads (TCL...
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3,504
PI(D) tuning for Flight Control Systems via Incremental Nonlinear Dynamic Inversion
cs.SY
Previous results reported in the robotics literature show the relationship between time-delay control (TDC) and proportional-integral-derivative control (PID). In this paper, we show that incremental nonlinear dynamic inversion (INDI) - more familiar in the aerospace community - are in fact equivalent to TDC. This lead...
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3,505
Robust Power System Dynamic State Estimator with Non-Gaussian Measurement Noise: Part II--Implementation and Results
cs.SY
This paper is the second of a two-part series that discusses the implementation issues and test results of a robust Unscented Kalman Filter (UKF) for power system dynamic state estimation with non-Gaussian synchrophasor measurement noise. The tuning of the parameters of our Generalized Maximum-Likelihood-type robust UK...
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3,506
Online Simultaneous State and Parameter Estimation
eess.SY
In this paper, a concurrent learning based adaptive observer is developed for a class of second-order nonlinear time-invariant systems with uncertain dynamics. The developed technique results in uniformly ultimately bounded state and parameter estimation errors. As opposed to persistent excitation which is required for...
electrics
3,507
A Graphical Characterization of Structurally Controllable Linear Systems with Dependent Parameters
cs.SY
One version of the concept of structural controllability defined for single-input systems by Lin and subsequently generalized to multi-input systems by others, states that a parameterized matrix pair $(A, B)$ whose nonzero entries are distinct parameters, is structurally controllable if values can be assigned to the pa...
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3,508
Variation Evolving for Optimal Control Computation, a Compact Way
eess.SY
A compact version of the variation evolving method (VEM) is developed in the primal variable space for optimal control computation. Following the idea that originates from the Lyapunov continuous-time dynamics stability theory in the control field, the optimal solution is analogized to the stable equilibrium point of a...
electrics
3,509
Small Satellite Constellation Separation using Linear Programming based Differential Drag Commands
cs.SY
We study the optimal control of an arbitrarily large constellation of small satellites operating in low Earth orbit. Simulating the lack of on-board propulsion, we limit our actuation to the use of differential drag maneuvers to make in-plane changes to the satellite orbits. We propose an efficient method to separate a...
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3,510
An Elementary Introduction to Kalman Filtering
eess.SY
Kalman filtering is a classic state estimation technique used in application areas such as signal processing and autonomous control of vehicles. It is now being used to solve problems in computer systems such as controlling the voltage and frequency of processors. Although there are many presentations of Kalman filte...
electrics
3,511
A New Approach To Estimate The Collision Probability For Automotive Applications
eess.SY
We revisit the computation of a probability of collision in the context of automotive collision avoidance (also referred to as conflict detection in other contexts). After reviewing existing approaches to the definition and computation of a collision probability we argue that the question "What is the probability of co...
electrics
3,512
The Strategic LQG System: A Dynamic Stochastic VCG Framework for Optimal Coordination
eess.SY
The classic Vickrey-Clarke-Groves (VCG) mechanism ensures incentive compatibility, i.e., that truth-telling of all agents is a dominant strategy, for a static one-shot game. However, in a dynamic environment that unfolds over time, the agents' intertemporal payoffs depend on the expected future controls and payments, a...
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3,513
Data-Driven Participation Factors for Nonlinear Systems Based on Koopman Mode Decomposition
cs.SY
This paper develops a novel data-driven technique to compute the participation factors for nonlinear systems based on the Koopman mode decomposition. Provided that certain conditions are satisfied, it is shown that the proposed technique generalizes the original definition of the linear mode-in-state participation fact...
electrics
3,514
Temporal Logic Verification of Stochastic Systems Using Barrier Certificates
cs.SY
This paper presents a methodology for temporal logic verification of discrete-time stochastic systems. Our goal is to find a lower bound on the probability that a complex temporal property is satisfied by finite traces of the system. Desired temporal properties of the system are expressed using a fragment of linear tem...
electrics
3,515
Robust path-following control for articulated heavy-duty vehicles
eess.SY
Path following and lateral stability are crucial issues for autonomous vehicles. Moreover, these problems increase in complexity when handling articulated heavy-duty vehicles due to their poor manoeuvrability, large sizes and mass variation. In addition, uncertainties on mass may have the potential to significantly dec...
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3,516
Reachability Analysis Using Dissipation Inequalities For Uncertain Nonlinear Systems
eess.SY
We propose a method to outer bound forward reachable sets on finite horizons for uncertain nonlinear systems with polynomial dynamics. This method makes use of time-dependent polynomial storage functions that satisfy appropriate dissipation inequalities that account for time-varying uncertain parameters, L2 disturbance...
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3,517
On asymptotic characterization of destabilizing switching signals for switched linear systems
eess.SY
This paper deals with classes of (de)stabilizing switching signals for switched systems. Most of the available conditions for stability of switched systems are sufficient in nature, and consequently, their violation does not conclude instability of a switched system. The study of instability is, however, important for ...
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3,518
MAP moving horizon estimation for threshold measurements with application to field monitoring
eess.SY
The paper deals with state estimation of a spatially distributed system given noisy measurements from pointwise-in-time-and-space threshold sensors spread over the spatial domain of interest. A Maximum A posteriori Probability (MAP) approach is undertaken and a Moving Horizon (MH) approximation of the MAP cost-function...
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3,519
Model predictive control for transient frequency regulation of power networks
eess.SY
This paper introduces a control strategy to simultaneously achieve asymptotic stabilization and transient frequency regulation of power networks. The control command is generated by iteratively solving an open-loop control cost minimization problem with stability and transient frequency constraints. To deal with the no...
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3,520
Descriptor system techniques and software tools
eess.SY
The role of the descriptor system representation as basis for reliable numerical computations for system analysis and synthesis, and in particular, for the manipulation of rational matrices, is discussed and available robust numerical software tools are described.
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3,521
Compositional Abstraction of Large-Scale Stochastic Systems: A Relaxed Dissipativity Approach
eess.SY
In this paper, we propose a compositional approach for the construction of finite abstractions (a.k.a. finite Markov decision processes (MDPs)) for networks of discrete-time stochastic control subsystems that are not necessarily stabilizable. The proposed approach leverages the interconnection topology and a notion of ...
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3,522
Solving Power System Differential Algebraic Equations Using Differential Transformation
eess.SY
This paper proposes a novel non-iterative method to solve power system differential algebraic equations (DAEs) using the differential transformation, a mathematical tool that can obtain power series coefficients by transformation rules instead of calculating high order derivatives and has proved to be effective in solv...
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3,523
Vulnerability Assessment of N-1 Reliable Power Systems to False Data Injection Attacks
eess.SY
This paper studies the vulnerability of large-scale power systems to false data injection (FDI) attacks through their physical consequences. Prior work has shown that an attacker-defender bi-level linear program (ADBLP) can be used to determine the worst-case consequences of FDI attacks aiming to maximize the physical ...
electrics
3,524
Verification of C-detectability Using Petri Nets
eess.SY
Detectability describes the property of an system whose current and the subsequent states can be uniquely determined after a finite number of observations. In this paper, we relax detectability to C-detectability that only requires a given set of crucial states can be distinguished from other states. Four types of C-de...
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3,525
Multi-agent estimation and filtering for minimizing team mean-squared error
eess.SY
Motivated by estimation problems arising in autonomous vehicles and decentralized control of unmanned aerial vehicles, we consider multi-agent estimation and filtering problems in which multiple agents generate state estimates based on decentralized information and the objective is to minimize a coupled mean-squared er...
electrics
3,526
On the Existence of a Fixed Spectrum for a Multi-channel Linear System: A Matroid Theory Approach
cs.SY
Conditions for the existence of a fixed spectrum \{i.e., the set of fixed modes\} for a multi-channel linear system have been known for a long time. The aim of this paper is to reestablish one of these conditions using a new and transparent approach based on matroid theory.
electrics
3,527
A Negotiation-based Right-of-way Assignment Strategy to Ensure Traffic Safety and Efficiency in Lane Change
eess.SY
It is widely acknowledged that verifying the safety of autonomous driving strategies requires a substantial body of simulation testing and road testing. In recent years, the formal safety methods represented by Responsibility-Sensitive Safety (RSS) have encouraged low-cost autonomous driving safety research, benefittin...
electrics
3,528
Robust simultaneous stabilization and decoupling of unstable adversely coupled uncertain resource constraints plants of a nano air vehicle
eess.SY
The plants of nano air vehicles (NAVs) are generally unstable, adversely coupled, and uncertain. Besides, the autopilot hardware of a NAV has limited sensing and computational capabilities. Hence, these vehicles need a single controller referred to as Robust Simultaneously Stabilizing Decoupling (RSSD) output feedback ...
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3,529
Optimal Storage Arbitrage under Net Metering using Linear Programming
eess.SY
We formulate the optimal energy arbitrage problem for a piecewise linear cost function for energy storage devices using linear programming (LP). The LP formulation is based on the equivalent minimization of the epigraph. This formulation considers ramping and capacity constraints, charging and discharging efficiency lo...
electrics
3,530
Decentralized Multi-target Tracking in Urban Environments: Overview and Challenges
eess.SY
In multi-target tracking, sensor control involves dynamically configuring sensors to achieve improved tracking performance. Many of these techniques focus on sensors with memoryless states (e.g., waveform adaptation, beam scheduling, and sensor selection), lending themselves to computationally efficient control strateg...
electrics
3,531
Passive Multi-Target Tracking Using the Adaptive Birth Intensity PHD Filter
eess.SY
Passive multi-target tracking applications require the integration of multiple spatially distributed sensor measurements to distinguish true tracks from ghost tracks. A popular multi-target tracking approach for these applications is the particle filter implementation of Mahler's probability hypothesis density (PHD) fi...
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3,532
Obstructed Target Tracking in Urban Environments
eess.SY
Accurate tracking in urban environments necessitates target birth, survival, and detection models that quantify the impact of terrain and building geometry on the sequential estimation procedure. Current efforts assume that target trajectories are limited to fixed paths, such as road networks. In these settings a singl...
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3,533
Learning Pugachev's Cobra Maneuver for Tail-sitter UAVs Using Acceleration Model
eess.SY
The Pugachev's cobra maneuver is a dramatic and demanding maneuver requiring the aircraft to fly at extremely high Angle of Attacks (AOA) where stalling occurs. This paper considers this maneuver on tail-sitter UAVs. We present a simple yet very effective feedback-iterative learning position control structure to regula...
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3,534
Compositional Abstraction-based Synthesis of General MDPs via Approximate Probabilistic Relations
eess.SY
We propose a compositional approach for constructing abstractions of general Markov decision processes using approximate probabilistic relations. The abstraction framework is based on the notion of $\delta$-lifted relations, using which one can quantify the distance in probability between the interconnected gMDPs and t...
electrics
3,535
Feedback Linearization for Quadrotors UAV
eess.SY
In the paper "Control Design for UAV Quadrotors via Embedded Model Control" [1], the authors designed a complete control unit for a UAV Quadrotor, based on the Embedded Model Control (EMC) methodology, in combination with the Feedback Linearization (FL); when applied to non-linear systems. Specifically, [1] proposes to...
electrics
3,536
Optimal In-field Routing for Full and Partial Field Coverage with Arbitrary Non-Convex Fields and Multiple Obstacle Areas
eess.SY
Within the context of optimising the logistics in agriculture this paper relates to optimal in-field routing for full and partial field coverage with arbitrary non-convex fields and multiple obstacle areas. It is distinguished between nine different in-field routing tasks: two for full-field coverage, seven for partial...
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3,537
Data-Driven Model Predictive Control with Stability and Robustness Guarantees
eess.SY
We propose a robust data-driven model predictive control (MPC) scheme to control linear time-invariant (LTI) systems. The scheme uses an implicit model description based on behavioral systems theory and past measured trajectories. In particular, it does not require any prior identification step, but only an initially m...
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3,538
Lyapunov Differential Equation Hierarchy and Polynomial Lyapunov Functions for Switched Linear Systems
eess.SY
This work studies the problem of searching for homogeneous polynomial Lyapunov functions for stable switched linear systems. Specifically, we show an equivalence between polynomial Lyapunov functions for systems of this class and quadratic Lyapunov functions for a related hierarchy of Lyapunov differential equations. T...
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3,539
A hierarchical Lyapunov-based cascade adaptive control scheme for lower-limb exoskeleton
eess.SY
This paper proposes a hierarchical Lyapunov-based adaptive cascade control scheme for a lower-limb exoskeleton with control saturation. The proposed approach is composed by two control levels with cascade structure. At the higher layer of the structure, a Lyapunov-based back-stepping regulator including adaptive estima...
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3,540
Adaptive Resource Management for a Virtualized Computing Platform within Edge Computing
eess.SY
In virtualized computing platforms, energy consumption is related to the computing-plus-communication processes. However, most of the proposed energy consumption models and energy saving solutions found in literature consider only the active Virtual Machines (VMs), thus the overall operational energy expenditure is usu...
electrics
3,541
A Passivity Interpretation of Energy-Based Forced Oscillation Source Location Methods
eess.SY
This paper develops a systematic framework for analyzing how low frequency forced oscillations propagate in electric power systems. Using this framework, the paper shows how to mathematically justify the so-called Dissipating Energy Flow (DEF) forced oscillation source location technique. The DEF's specific deficiencie...
electrics
3,542
A steady-state stability analysis of uniform synchronous power grid topologies
eess.SY
Motter et al. derived a real-valued master stability function which determines whether and to what degree a given power grid is asymptotically stable. Stright and Edrington adopted certain uniformity assumptions on a grid's components and demonstrated how differences in topologies obtained using these components can af...
electrics
3,543
Memory Augmented Neural Network Adaptive Controller for Strict Feedback Nonlinear Systems
eess.SY
In this work, we consider the adaptive nonlinear control problem for strict feedback nonlinear systems, where the functions that determine the dynamics of the system are completely unknown. We assume that certain upper bounds for the functions $g_i$s of the system are known. The objective of the control design is to de...
electrics
3,544
Game-Theoretic Mixed $H_2/H_{\infty}$ Control with Sparsity Constraint for Multi-agent Networked Control Systems
eess.SY
Multi-agent networked control systems (NCSs) are often subject to model uncertainty and are limited by large communication cost, associated with feedback of data between the system nodes. To provide robustness against model uncertainty and to reduce the communication cost, this paper investigates the mixed $H_2/H_{\inf...
electrics
3,545
Dynamic Control of Functional Splits for Energy Harvesting Virtual Small Cells: a Distributed Reinforcement Learning Approach
eess.SY
In this paper, we propose a network scenario where the baseband processes of the virtual small cells powered solely by energy harvesters and batteries can be opportunistically executed in a grid-connected edge computing server, co-located at the macro base station site. We state the corresponding energy minimization pr...
electrics
3,546
Ensemble Consider Kalman Filtering
eess.SY
In this paper, the ensemble consider Kalman filter is proposed to mitigate the negative effects of uncertain parameters in nonlinear dynamic and measurement models. The ensemble Kalman filter can avoid using the Jacobian matrices and reduce the computational complexity, the unknown parameters of the models still are no...
electrics
3,547
A Chance-Constrained Stochastic Electricity Market
eess.SY
Efficiently accommodating uncertain renewable resources in wholesale electricity markets is among the foremost priorities of market regulators in the US, UK and EU nations. However, existing deterministic market designs fail to internalize the uncertainty and their scenario-based stochastic extensions are limited in th...
electrics
3,548
Flight Control for UAV Loitering Over a Ground Target with Unknown Maneuver
eess.SY
This paper proposes a flight controller for an unmanned aerial vehicle (UAV) to loiter over a ground moving target (GMT). We are concerned with the scenario that the stochastically time-varying maneuver of the GMT is unknown to the UAV, which renders it challenging to estimate the GMT's motion state. Assuming that the ...
electrics
3,549
Distributed $H_\infty$ Estimation Resilient to Biasing Attacks
eess.SY
We consider the distributed $H_\infty$ estimation problem with an additional requirement of resilience to biasing attacks. An attack scenario is considered where an adversary misappropriates some of the observer nodes and injects biasing signals into observer dynamics. The paper proposes a procedure for the derivation ...
electrics
3,550
A Global Solution Method for Decentralized Multi-Area SCUC and Savings Allocation Based on MILP Value Functions
eess.SY
To address the issue that Lagrangian dual function based algorithms cannot guarantee convergence and global optimality for decentralized multi-area security constrained unit commitment (M-SCUC) problems, a novel decomposition and coordination method using MILP (mixed integer linear programming) value functions is propo...
electrics
3,551
A Dual-level Model Predictive Control Scheme for Multi-timescale Dynamical Systems--Extended Version
eess.SY
So far, many control algorithms have been developed for singularly perturbed systems. However, in many industrial processes, enforcing closed-loop fast-slow dynamics for peculiarly non-separable ones is a prior request and a crucial issue to be resolved. Aiming at the above problem, this paper presents two dual-level m...
electrics
3,552
Target Encirclement with any Smooth Pattern Using Range-only Measurements
eess.SY
This paper proposes a coordinate-free controller to drive a mobile robot to encircle a target at unknown position by only using range measurements. Different from the existing works, a backstepping based controller is proposed to encircle the target with zero steady-state error for any desired smooth pattern. Moreover,...
electrics
3,553
LIDAR-Assisted Exact Output Regulation for Load Mitigation in Wind Turbines
eess.SY
Optimising wind turbine performance involves maximising energy harvesting while seeking to minimise load fatigues on the tower structure, blades and rotor. To improve turbine control performance, wind preview measurement technologies such as Light Detection And Ranging (LIDAR) have been a point of interest for research...
electrics
3,554
An Integral Formulation and Convex Hull Pricing for Unit Commitment
eess.SY
Reducing uplift payments has been a challenging problem for most wholesale markets in US. The main difficulty comes from the unit commitment discrete decision makings. Recently convex hull pricing has shown promises to reduce the uplift payments. However, it has been intractable to obtain the optimal convex hull price....
electrics
3,555
Computationally Efficient Distributed Multi-sensor Fusion with Multi-Bernoulli Filter
eess.SY
This paper proposes a computationally efficient algorithm for distributed fusion in a sensor network in which multi-Bernoulli (MB) filters are locally running in every sensor node for multi-target tracking. The generalized Covariance Intersection (GCI) fusion rule is employed to fuse multiple MB random finite set densi...
electrics
3,556
Resilient Leader-Follower Consensus with Time-Varying Leaders in Discrete-Time Systems
eess.SY
The problem of consensus in the presence of adversarially behaving agents has been studied extensively in the literature. The proposed algorithms typically guarantee that the consensus value lies within the convex hull of initial normal agents' states. In leader-follower consensus problems however, the objective for no...
electrics
3,557
Herding an Adversarial Swarm in an Obstacle Environment
eess.SY
This paper studies a defense approach against a swarm of adversarial agents. We employ a closed formation (`StringNet') of defending agents around the adversarial agents to restrict their motion and guide them to a safe area while navigating in an obstacle-populated environment. Control laws for forming the StringNet a...
electrics
3,558
Resilient Leader-Follower Consensus to Arbitrary Reference Values in Time-Varying Graphs
eess.SY
Several algorithms in prior literature have been proposed which guarantee consensus of normally behaving agents in a network that may contain adversarially behaving agents. These algorithms guarantee that the consensus value lies within the convex hull of initial normal agents' states, with the exact consensus value po...
electrics
3,559
Newton's Method and Differential Dynamic Programming for Unconstrained Nonlinear Dynamic Games
eess.SY
Dynamic games arise when multiple agents with differing objectives control a dynamic system. They model a wide variety of applications in economics, defense, energy systems and etc. However, compared to single-agent control problems, the computational methods for dynamic games are relatively limited. As in the single-a...
electrics
3,560
On the Local Input-Output Stability of Event-Triggered Control Systems
cs.SY
This paper studies performance preserving event design in nonlinear event-based control systems based on a local L2-type performance criterion. Considering a finite gain local L2-stable disturbance driven continuous-time system, we propose a triggering mechanism so that the resulting sampled-data system preserves simil...
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3,561
Adaptive polytopic estimation for nonlinear systems under bounded disturbances using moving horizon
eess.SY
This paper introduces an adaptive polytopic estimator design for nonlinear systems under bounded disturbances combining moving horizon and dual estimation techniques. It extends the moving horizon estimation results for LTI systems to polytopic LPV systems. The design and necessary conditions to guarantee the robust st...
electrics
3,562
Simultaneous state estimation and control for nonlinear systems subject to bounded disturbances
cs.SY
In this work, we address the output--feedback control problem for nonlinear systems under bounded disturbances using a moving horizon approach. The controller is posed as an optimization-based problem that simultaneously estimates the state trajectory and computes future control inputs. It minimizes a criterion that in...
electrics
3,563
Probabilistic model predictive safety certification for learning-based control
eess.SY
Reinforcement learning (RL) methods have demonstrated their efficiency in simulation environments. However, many applications for which RL offers great potential, such as autonomous driving, are also safety critical and require a certified closed-loop behavior in order to meet safety specifications in the presence of p...
electrics
3,564
Validating Coordination Schemes between Transmission and Distribution System Operators using a Laboratory-Based Approach
eess.SY
The secure operation of future power systems will rely on better coordination between transmission system and distribution system operators. Increasing integration of renewables throughout the whole system is challenging the traditional operation. To tackle this problem, the SmartNet project proposes and evaluates five...
electrics
3,565
A Receding Horizon Framework for Autonomy in Unmanned Vehicles
eess.SY
In this article we present a unified framework based on receding horizon techniques that can be used to design the three tasks (guidance, navigation and path-planning) which are involved in the autonomy of unmanned vehicles. This tasks are solved using model predictive control and moving horizon estimation techniques, ...
electrics
3,566
Design of distributed guidance laws for multi-UAV cooperative attacking a moving target based on reducing surrounding area
eess.SY
In this paper, two cooperative guidance laws based on the area around the target of multiattackers are designed to deal with the problem of cooperative encirclement or simultaneous attack in the case of known target acceleration and unknown target acceleration. Multi-attacker communication network only needs to contain...
electrics
3,567
Computer-aided modelling of complex physical systems with BondGraphTools
eess.SY
BondGraphTools is a Python library for scripted modelling of complex multi-physics systems. In contrast to existing modelling solutions, BondGraphTools is based upon the well established bond graph methodology, provides a programming interface for symbolic model composition, and is intended to be used in conjunction wi...
electrics
3,568
Nested Reinforcement Learning Based Control for Protective Relays in Power Distribution Systems
eess.SY
This paper envisions a new control architecture for the protective relay setting in future power distribution systems. With deepening penetration of distributed energy resources at the end users level, it has been recognized as a key engineering challenge to redesign the protective relays in the future distribution sys...
electrics
3,569
Sliding Mode Control Techniques and Artificial Potential Field for Dynamic Collision Avoidance in Rendezvous Maneuvers
eess.SY
The paper considers autonomous rendezvous maneuver and proximity operations of two spacecraft in presence of obstacles. A strategy that combines guidance and control algorithms is analyzed. The proposed closed-loop system is able to guarantee a safe path in a real environment, as well as robustness with respect to exte...
electrics
3,570
Chance-Constrained Trajectory Optimization for Non-linear Systems with Unknown Stochastic Dynamics
eess.SY
Iterative trajectory optimization techniques for non-linear dynamical systems are among the most powerful and sample-efficient methods of model-based reinforcement learning and approximate optimal control. By leveraging time-variant local linear-quadratic approximations of system dynamics and reward, such methods can f...
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3,571
Preference-based Energy Exchange in a Network of Microgrids
eess.SY
Peer-to-peer energy trading is emerging as a new paradigm that in the near future may disrupt conventional electricity markets and heavily affect energy exchanges in networks of microgrids. In this paper, a preference mechanism is considered to compute optimal energy exchanges in a network of microgrids with or without...
electrics
3,572
Combining Learning and Model Based Control via Discrete-Time Chen-Fliess Series
eess.SY
A learning control system is presented suitable for control affine nonlinear plants based on discrete-time Chen-Fliess series and capable of incorporating knowledge of a given physical model. The underlying noncommutative algebraic and combinatorial structures needed to realize the multivariable case are also described...
electrics
3,573
Distributed Optimal Guidance Laws for Multiple Unmanned Aerial Vehicles Attacking A Moving Target
eess.SY
In this paper, two cooperative guidance laws based on two-point boundary value are designed to deal with the problem of cooperative encirclement and simultaneous attack under condition of both known target acceleration and unknown target acceleration. The only requirement for the multi-attacker communication network is...
electrics
3,574
Beyond Phasors: Continuous-Spectrum Modeling of Power Systems using the Hilbert Transform
eess.SY
Modern power systems are at risk of largely reducing the inertia of generation assets and prone to experience extreme dynamics. The consequence is that, during electromechanical transients triggered by large contingencies, transmission of electrical power may take place in a broad spectrum well beyond the single fundam...
electrics
3,575
$H_{\infty}$-Control of Grid-Connected Converters: Design, Objectives and Decentralized Stability Certificates
eess.SY
The modern power system features high penetration of power converters due to the development of renewables, HVDC, etc. Currently, the controller design and parameter tuning of power converters heavily rely on rich engineering experience and extrapolation from a single converter system, which may lead to inferior perfor...
electrics
3,576
The Branching-Course MPC Algorithm for Maritime Collision Avoidance
eess.SY
This article presents a new algorithm for short-term maritime collision avoidance (COLAV) named the branching-course MPC (BC-MPC) algorithm. The algorithm is designed to be robust with respect to noise on obstacle estimates, which is a significant source of disturbance when using exteroceptive sensors such as e.g. rada...
electrics
3,577
Smart Charging Benefits in Autonomous Mobility on Demand Systems
eess.SY
In this paper, we study the potential benefits from smart charging for a fleet of electric vehicles (EVs) providing autonomous mobility-on-demand (AMoD) services. We first consider a profit-maximizing platform operator who makes decisions for routing, charging, rebalancing, and pricing for rides based on a network flow...
electrics
3,578
Distributed Design of Robust Kalman Filters over Corrupted Channels
eess.SY
We study distributed filtering for a class of uncertain systems over corrupted communication channels. We propose a distributed robust Kalman filter with stochastic gains, through which upper bounds of the conditional mean square estimation errors are calculated online. We present a robust collective observability cond...
electrics
3,579
Hybrid Collision Avoidance for ASVs Compliant with COLREGs Rules 8 and 13-17
eess.SY
This paper presents a three-layered hybrid collision avoidance (COLAV) system for autonomous surface vehicles, compliant with rules 8 and 13-17 of the International Regulations for Preventing Collisions at Sea (COLREGs). The COLAV system consists of a high-level planner producing an energy-optimized trajectory, a model...
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3,580
Development of a novel matrix-based methodology for system engineering: A case study
eess.SY
Developing a structured method for analyzing various aspects of a system requires a novel methodology. This study is aimed at developing such as methodology through combining two major matrix methods, namely, Design Structure Matrix (DSM) and Interface Structure Matrix (ISM). Through this paper, a business process mode...
electrics
3,581
Traffic Flow Characteristics and Lane Use Strategies for Connected and Automated Vehicle in Mixed Traffic Conditions
eess.SY
Managed lanes, such as a dedicated lane for connected and automated vehicles (CAVs), can provide not only technological accommodation but also desired market incentives for road users to adopt CAVs in the near future. In this paper, we investigate traffic flow characteristics with two configurations of the managed lane...
electrics
3,582
Discrete Event Simulation of Driver's Routing Behavior Rule at a Road Intersection
eess.SY
Several factors influence traffic congestion and overall traffic dynamics. Simulation modeling has been utilized to understand the traffic performance parameters during traffic congestions. This paper focuses on driver behavior of route selection by differentiating three distinguishable decisions, which are shortest di...
electrics
3,583
Multi-object Tracking in Unknown Detection Probability with the PMBM Filter
eess.SY
This paper focuses on the joint multi-object tracking (MOT) and the estimate of detection probability with the \emph{Poisson multi-Bernoulli mixture} (PMBM) filter. In a majority of multi-object scenarios, the knowledge of detection probability is usually uncertain, which is often estimated offline from the training da...
electrics
3,584
Self-triggered stabilizing controllers for linear continuous-time systems
eess.SY
Self-triggered control is an improvement on event-triggered control methods. Unlike the latter, self-triggered control does not require monitoring the behavior of the system constantly. Instead, self-triggered algorithms predict the events at which the control law has to be updated before they happen, relying on system...
electrics
3,585
Generalized Proportional Allocation Policies for Robust Control of Dynamical Flow Networks
eess.SY
We study a robust control problem for dynamical flow networks. In the considered dynamical models, traffic flows along the links of a transportation network --modeled as a capacited multigraph-- and queues up at the nodes, whereby control policies determine which incoming queues at a node are to be allocated service si...
electrics
3,586
Multi-Agent Safe Policy Learning for Power Management of Networked Microgrids
eess.SY
This paper presents a supervised multi-agent safe policy learning (SMAS-PL) method for optimal power management of networked microgrids (MGs) in distribution systems. While conventional reinforcement learning (RL) algorithms are black-box decision models that could fail to satisfy grid operational constraints, our prop...
electrics
3,587
Small-Signal Stability Analysis for Droop-Controlled Inverter-based Microgrids with Losses and Filtering
eess.SY
An islanded microgrid supplied by multiple distributed energy resources (DERs) often employs droop-control mechanisms for power sharing. Because microgrids do not include inertial elements, and low pass filtering of noisy measurements introduces lags in control, droop-like controllers may pose significant stability con...
electrics
3,588
Surrogate model approach for investigating the stability of a friction-induced oscillator of Duffing's type
eess.SY
Parametric studies for dynamic systems are of high interest to detect instability domains. This prediction can be demanding as it requires a refined exploration of the parametric space due to the disrupted mechanical behavior. In this paper, an efficient surrogate strategy is proposed to investigate the behavior of an ...
electrics
3,589
A novel passivity based controller for a piezoelectric beam
eess.SY
This paper presents a new passivity property for distributed piezoelectric devices with integrable port-variables. We present two new control methodologies by exploiting the integrability property of the port-variables. The derived controllers have a Proportional-Integral (PI) like structure. Finally, we present the si...
electrics
3,590
A Soft-switched Fast Cell-to-Cell Voltage Equalizer for Electrochemical Energy Storage
eess.SY
Batteries are connected in series to meet the voltage requirement in many applications. A voltage equalizer circuit is necessary to ensure that none of the batteries is over-charged or over-discharged. A novel fast soft-switched cell-to-cell voltage equalizer topology is proposed in this work. This topology can trans...
electrics
3,591
A Reconfigurable Solar Photovoltaic Grid-Tied Inverter Architecture for Enhanced Energy Access in Backup Power Applications
eess.SY
In this paper, a photovoltaic (PV) reconfigurable grid-tied inverter (RGTI) scheme is proposed. Unlike a conventional GTI that ceases operation during a power outage, the RGTI is designed to act as a regular GTI in the on-grid mode but it is reconfigured to function as a DC-DC charge-controller that continues operation...
electrics
3,592
Decentralized Dynamic State Estimation in Microgrids
eess.SY
This paper proposes a decentralized dynamic state estimation scheme for microgrids. The approach employs the voltage and current measurements in the dq0 reference frame through phasor synchronization to be able to exclude orthogonal functions from their relationship formulas. Based on that premise, we utilize a Kalman ...
electrics
3,593
Backward Reachability for Polynomial Systems on A Finite Horizon
eess.SY
A method is presented to obtain an inner-approximation of the backward reachable set (BRS) of a given target tube, along with an admissible controller that maintains trajectories inside this tube. The proposed optimization algorithms are formulated as nonlinear optimization problems, which are decoupled into tractable ...
electrics
3,594
Simulation Credibility Assessment Methodology with FPGA-based Hardware-in-the-loop Platform
eess.SY
Electronic control systems are becoming more and more complicated, which makes it difficult to test them sufficiently only through experiments. Simulation is an efficient way in the development and testing of complex electronic systems, but the simulation results are always doubtful by people due to the lack of credibl...
electrics
3,595
Distributed Integer Balancing under Weight Constraints in the Presence of Transmission Delays and Packet Drops
eess.SY
We consider the distributed weight balancing problem in networks of nodes that are interconnected via directed edges, each of which is able to admit a positive integer weight within a certain interval, captured by individual lower and upper limits. A digraph with positive integer weights on its (directed) edges is weig...
electrics
3,596
Controlling Power and Virtual Inertia from Storage for Frequency Response
eess.SY
Nowadays, power imbalance happens more frequently due to the more integration of renewable energy sources. Energy storage is a kind of devices that can charge energy at one time and discharge energy at another time. This function makes that storage is widely envolved into promoting power balance of power system. Beside...
electrics
3,597
Short-term ASV Collision Avoidance with Static and Moving Obstacles
eess.SY
This article considers collision avoidance (COLAV) for both static and moving obstacles using the branching-course model predictive control (BC-MPC) algorithm, which is designed for use by autonomous surface vehicles (ASVs). The BC-MPC algorithm originally only considered COLAV of moving obstacles, so in order to make ...
electrics
3,598
Safety Control with Preview Automaton
eess.SY
This paper considers the problem of safety controller synthesis for systems equipped with sensor modalities that can provide preview information. We consider switched systems where switching mode is an external signal for which preview information is available. In particular, it is assumed that the sensors can notify t...
electrics
3,599
Approximate Nonlinear Regulation via Identification-Based Adaptive Internal Models
eess.SY
This paper concerns the problem of adaptive output regulation for multivariable nonlinear systems in normal form. We present a regulator employing an adaptive internal model of the exogenous signals based on the theory of nonlinear Luenberger observers. Adaptation is performed by means of discrete-time system identific...
electrics