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The problem of fault detection for a class of continuous-time nonlinear networked control systems subject to delays induced by the networks from the sensor to controller and from controller to actuator is concerned in this paper. An observer-based fault detection filter is designed. A sufficient condition is also derived which makes the closed-loop system asymptotically stable in terms of linear matrix...
Event-driven controller is designed in this paper on the context of networked communication links. For reducing the network burden, an event generator is employed to reduce the transmitted data in network. Meanwhile, data losses on both sides of the controller are taken into account and captured by random distributions. Considering the time-varying network environment, the probability of the random...
A passivity-based controllers with integral actions is proposed to control the current loop of permanent magnet synchronous motor (PMSM). The Port-controlled Hamiltonian system with dissipation (PCHD) model of permanent magnet synchronous motor with voltage disturbance is established by introduction of the state error and the integral action. The Lyapunov function is constructed to analyze the stability...
This paper studies the problem of finite-time stabilization for a class of uncertain nonholonomic systems in chained form with output constraint. A nonlinear mapping is first introduced to transform the output-constrained system into a new unconstrained one. Then, by employing the adding a power integrator technique and switching control strategy, a state feedback controller is successfully constructed...
This note deal with H∞ adaptive event-triggered control on a class of networked control systems with randomly occurring nonlinearities. By employing an adaptive controller, the system is against randomly occurring nonlinearities effectively. Based on a Lyapunov functional, the stability criteria are given. Finally, a numerical example is given to illustrate the effectiveness of the obtained results.
This paper focuses on an anti-disturbance problem for the switched systems subject to input saturation and disturbances. The matched and mismatched disturbances with control input are both considered. Based on the differential inclusion treatment of the saturation nonlinearity, a controller which includes state feedback control part and an extra control part is proposed to locally stabilize the system...
Under the weaker assumption on the drift and diffusion terms, this paper proposes a new parameter-dependent state-feedback controller design scheme for a class of stochastic time delay systems. On the basis of stochastic time delay system stability theory, by tactfully choosing a suitable Lyapunov-Krasovskii functional (LKF), the proposed controller can ensure that the closed-loop system is globally...
The design of adaptive sliding mode control is studied for a class of Markov jump systems(MJSs) with transition rate uncertainties and the partial failures of the actuators. Firstly, the mathematical model of MJSs with the uncertainty of the transition rate and the partial failure of the actuator is established. Secondly, the sliding surface is proposed by combining linear matrix inequality (LMI)...
In this paper, we investigate the leader-following rendezvous with connective preservation problem for a class of single-integrator multi-agent systems subject to a nonlinear leader system. A class of distributed nonlinear internal model is established and the equivalent cooperative stabilization problem is solved by a potential function based nonlinear distributed controller. It is interesting that...
The paper deals with passification for singular Markov jump systems (SMJSs) with stochastic disturbance and actuator saturation. By employing the polytopic model, a stabilizing controller is constructed such that the closed-loop SMJSs are stochastically admissible and passive (SAP). Some criteria for stabilizing controller design are derived by using an optimization problem in LMIs. Finally, an example...
Smart materials actuated devices have been attracting tremendous attentions for decades, especially nowadays. Smart material actuators have been prevalently utilized in the fields such as soft robots and nano-engineering for their outstanding merits such as flexibility and ultrahigh spatial resolution. Although, usage of these smart material actuators can facilitate transmission systems design, problems...
This paper is concerned with the problem of finite-time H2/H∞ control for linear stochastic systems. First, a new definition of finite-time H2/H∞ control is given. Second, some sufficient conditions for the existence of finite-time H2/H∞ control are obtained, and the relationships among transient performance, H2 performance index and H00 performance index are represented by an algorithm. Finally,...
In this paper, we study the problem about the stochastic stabilization for a class of discrete-time singular systems involved constant time delay and the Markovian jump parameters. We pay attention to designing a dynamic feedback controller such that the resultant closed-loop system is regular, impulsive-free and stable. A condition that ensures that the dynamic feedback controller exists is obtained...
This paper studies the non-fragile H∞ control for switched linear systems with an event-triggering strategy. With the proposed strategy, the system state is only sampled and updated when the defined error exceeds a given threshold. More in detail, first, based on multi-Lyapunov function method and average dwell time technique, sufficient conditions for the H∞ control performance are given, and subsequently...
This paper is concerned with the stabilization and l2 gain control problems for a class of networked control systems with actuator saturation. By using the switched system model, the regional stabilization condition is firstly obtained. Then, the corresponding optimization problem is given to maximize the estimate of the domain of attraction. Under zero initial condition, the state feedback controller...
This paper is concerned with the exponential stabilization problem for a class of distributed parameter systems (DPSs) described by a parabolic partial differential equation (PDE) with mobile actuators and sensors. Initially, the mobile guidance for each actuator/sensor pair is proposed based on the system performance requirement and the well-posed analysis of the DPS is given via the operator semigroup...
This paper considers the finite-time control problem for aircrafts with uncertainty. The dynamic model used here is in terms of Euler angles which can be obtained easily. The extended state observer (ESO) is designed to estimate the lumped uncertainty of the system. Based on this, the finite-time controller is designed by using the backstepping method. It proved that the state of the closed-loop system...
This paper investigates the H∞ control problem for linear system over networks with random communication data dropout and actuator saturation. The random data dropout process is modeled by a Bernoulli random binary distribution and the input saturation is confined in a convex hull by introducing a group of auxiliary matrices. By constructing a quadratic Lyapunov function, effective conditions for...
This paper considers global practical tracking for a class of nonlinear systems with unknown relative degree, unknown control direction and non-parametric uncertain nonlinearities. Different from the existing results, known upper bound is not required for the unknown relative degree, which makes it impossible to design a filter with fixed dimension. To compensate the multiple uncertainties, a novel...
The design of a novel adaptive finite-time stable control system for high-order systems with parameter uncertainties is presented. Specified dynamics with recursive structure is employed as the finite-time convergent target system, thus leading to a systematic design process for systems with arbitrary order. Estimators for unknown parameters are constructed using immersion and invariance (I&I)...
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