# IEEE Control Systems Letters

## Filter Results

Displaying Results 1 - 12 of 12
• ### Joint-Space Impedance Control Using Intrinsic Parameters of Compliant Actuators and Inner Sliding Mode Torque Loop

Publication Year: 2019, Page(s):1 - 6
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A new control law for joint-space impedance in robots with variable impedance actuators is presented. The objective is achieved using reduced information on high order derivatives compared to standard approaches, therefore leading to more reliable interactions with unknown environments. Most importantly, the impedance characteristic is given by the real stiffness and damping coefficients of each a... View full abstract»

• ### Worst-Case Jamming Attack and Optimum Defense Strategy in Cooperative Relay Networks

Publication Year: 2019, Page(s):7 - 12
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In this letter, we consider multiple peer to peer communications using a trusted relay network encountered to the jamming network attack. The jammers, that are equipped with beamformer are trying to minimize the maximum signal-to-interference-plus-noise ratio (SINR) at the destinations subject to the constraint that the maximum SINR at each of the relay nodes does not exceed a predefined threshold... View full abstract»

• ### Guaranteed Constraint Satisfaction in Continuous-Time Control Problems

Publication Year: 2019, Page(s):13 - 18
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In the context of continuous-time control systems, we address the problem of guaranteeing that the constraints imposed along the trajectory are in fact satisfied for all times. The problem is relevant and non-trivial in situations in which a continuous-time internal representation of the system is used with a digital device, such as in sampled-data model-based control, in an optimal control solver... View full abstract»

• ### Full-Complexity Characterization of Control-Invariant Domains for Systems With Uncertain Parameter Dependence

Publication Year: 2019, Page(s):19 - 24
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This letter proposes an algorithm to find a robust control invariant (RCI) set of desired complexity and the associated linear, state-feedback control law. The candidate RCI set is restricted to be symmetric around the origin. The algorithm is applicable to rational parameter dependent systems with bounded additive disturbance. The system constraints are framed as simple affine inequalities wherea... View full abstract»

• ### Output Feedback Control via Bisimulation of Stochastic Linear Systems

Publication Year: 2019, Page(s):25 - 30
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The characterization of the behavior that can be achieved by a plant when interconnected with a controller is a topic widely investigated in mathematical systems theory. In this regard, many results have been obtained for several classes of continuous systems, and also for discrete-event and hybrid systems. However, current literature is rather scant in stochastic settings. In this letter we aim t... View full abstract»

• ### Distributed Algorithms for Multi-Layer Connected Edge Dominating Sets

Publication Year: 2019, Page(s):31 - 36
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Monitoring the state of communications in a distributed multilayer network with differing node capabilities requires the maintenance of a backbone which is a connected edge dominating set. In this letter, we present distributed algorithms that can efficiently create such multilayer resilient connected edge-dominating sets. After establishing the complexity of the problem and our proposed heuristic... View full abstract»

• ### Encrypted Cooperative Control Based on Structured Feedback

Publication Year: 2019, Page(s):37 - 42
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Cooperative control for multi-agent systems usually requires some communication between the various subsystems. In the resulting networked control system, sensitive data is transmitted and shared between the agents. We propose a novel encrypted control scheme that ensures privacy of the individual agents’ data not only during transmission but also during controller evaluations at neighborin... View full abstract»

• ### On the Exponential Stability of Primal-Dual Gradient Dynamics

Publication Year: 2019, Page(s):43 - 48
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Continuous time primal-dual gradient dynamics (PDGD) that find a saddle point of a Lagrangian of an optimization problem have been widely used in systems and control. While the global asymptotic stability of such dynamics has been well-studied, it is less studied whether they are globally exponentially stable. In this letter, we study the PDGD for convex optimization with strongly convex and smoot... View full abstract»

• ### Constrained Order Observer Design for Disturbance Decoupled Output Estimation

Publication Year: 2019, Page(s):49 - 54
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From industry there is an increasing interest in applying model based control techniques to large-scale systems. Control designs like $H_{2}$ and $H_{infty}$ optimal control will typically contain a dynamic state observer in which the order will be equal... View full abstract»

• ### Stochastic Evolutionary Dynamics: A Graphical Reformulation of Evolutionarily Stable Strategy (ESS) Analysis

Publication Year: 2019, Page(s):55 - 60
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We propose a novel graph-based reformulation for the concept of evolutionarily stable strategies. Evolutionarily stable strategy (ESS) analysis cannot always explain the long-term behavior of a natural selection-mutation process. Stochastic stability is a more general analysis tool as compared to ESS analysis because it can precisely characterize long-term stochastic behavior. However, one of the ... View full abstract»

• ### Stochastic Extremum Seeking for Dynamic Maps With Delays

Publication Year: 2019, Page(s):61 - 66
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We address a Newton-based extremum seeking algorithm for maximizing higher derivatives of unknown maps in the presence of known time delays. Different from all previous works on this topic, we employ stochastic instead of periodic perturbations, allow arbitrarily long output delays and consider a dynamic map to be optimized. We incorporate a novel predictor feedback for delay compensation and show... View full abstract»

• ### An Integrated Traveling Salesman and Coverage Path Planning Problem for Unmanned Aircraft Systems

Publication Year: 2019, Page(s):67 - 72
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Unmanned aircraft systems (UASs) have gained great popularity in land monitoring, 3-D mapping, search and rescue, among others. Existing studies on UAS path planning in these missions consider only a single region to be examined. However, it is frequently encountered that multiple regions need to be considered while performing a real life mission. How to design the optimal path for the UAS to cove... View full abstract»

## Aims & Scope

The IEEE Control Systems Letters (L-CSS) publishes peer-reviewed brief articles that provide a rapid and concise account of innovative ideas regarding the theory, design, and applications of all aspects of control engineering.

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief
Prof.ssa M. Elena Valcher
Dipartimento di Ingegneria dell'Informazione