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This paper presents a method to design a controller for improving vehicle vertical and roll movement of an in-wheel motor driven vehicle using active suspension with considerations of parameters uncertainties and control saturation. The construction of the mathematical model of vehicle suspension will combine active suspension with vehicle lateral stability together. Using the robust H∞ optimal control...
The paper addresses the design of anti-windup control for flexible satellite attitude system with actuator saturation. First, a linear observer-based controller is designed to stabilize the satellite attitude system and realizes flexible vibration suppression without considering saturation. According to the difference between the controller output and the saturated actuator output, an anti-windup...
This paper deals with the robust semi-global leader-following consensus problem for a linear multi-agent system with imperfect actuators. The actuators of the follower agents have imperfect input output characteristics, such as those of saturation and dead-zone, and those characteristics are not precisely known. The agents are also subject to input additive disturbances. A low-and-high gain based...
The paper studies the problem of the disturbance attenuation for switched systems subject to actuator saturation. A nonlinear feedback controller which expresses by the form of quasi-LPV as well as the switching law which is time-dependent, are constructed that lead to the closed-loop switched system is stable and has disturbance attenuation capacity. In addition, the solvability conditions for the...
In this paper, an active fault-tolerant scheme with performance degradation is proposed in the presence of actuator saturation and fault. Firstly, the loss of control effectiveness fault is transformed into an virtual additive fault and then the effectiveness factors are estimated by a two-stage Kalman filter algorithm with a set of forgetting factors. In order to satisfy the output tracking performance,...
This paper analyzes the stability for a class of nonlinear descriptor system via T-S fuzzy model with actuator saturation and proposes a controller design method for the system. A set invariance condition is first presented such that the closed-loop system is regular and impulse free, and under which an ellipsoid is contractively invariant. Then the methods of estimating the attraction domain for...
This paper considers the L2 gain analysis problem for switched linear parameter-varying (LPV) systems in the presence of actuator saturation. The multiple parameter-dependent Lyapunov functions approach is used to design a state feedback law and parameter mode-dependent switching law without requiring the stability of each subsystem. A sufficient condition is obtained by a matrix optimization to guarantee...
In this paper, the anti-windup compensator design using event-triggered strategy for linear systems subject to actuator saturation is investigated. Different from the existing result with prescribed anti-windup compensator gain, the main contribution of this paper is that a sufficient condition is presented for anti-windup compensation with event-triggered control and an iterative algorithm is formulated...
In this paper, the stabilization bound problem for time-delay singularly perturbed systems (SPSs) with actuator saturation is considered. Based on the Lyapunov-Kravoskii functional and linear matrix inequality (LMI) approach, the design method of stabilization controller for SPSs with time-delay and actuator saturation is proposed. Then, the problem of estimating the domain of attraction depending...
In this paper, the problem of robust tracking control is investigated. Simulation on the longitudinal model of a flexible air-breathing hypersonic vehicle (FAHV) with actuator saturation and uncertainties is conducted. In order to guarantee that the velocity and altitude to track their reference commands, an adaptive anti-up control strategy is presented based on sliding mode control method. The adaptive...
In this paper, we study the control problem for discrete-time switched positive systems subject to actuator saturation. Based on the average dwell time approach and co-positive type Lyapunov function method, local exponential stabilization and weighted l1-gain performance analysis are investigated, respectively. The state feedback controller design and the estimation on domain of attraction are presented...
This paper investigates the robust stabilization problem of general switched nonlinear systems subject to actuator saturation under arbitrary switching paths. Firstly, the robust stabilization of nonlinear switched Hamiltonian systems with actuator saturation is studied, the saturation function is expressed by a control input and compensation, then several sufficient conditions are derived and an...
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