Abstract The problem of attitude control for a spacecraft model which is nonlinear in dynamics with inertia uncertainty and external disturbance investigated this paper. Two sliding mode controllers are proposed to force the state variables closed‐loop system converge origin finite time. Specially, second design consists estimation by adaptive method thus it achieves decrease undesired chattering effectively. Also, simulation results presented illustrate effectiveness strategies. Copyright ©...

In this note, we consider the problems of stochastic stability and sliding-mode control for a class linear continuous-time systems with jumps, in which jumping parameters are modeled as continuous-time, discrete-state homogeneous Markov process right continuous trajectories taking values finite set. By using Linear matrix inequalities (LMIs) approach, sufficient conditions proposed to guarantee underlying system. Then, reaching motion controller is designed such that resulting closed-loop...

The design problem of networked control systems (NCS) with constant and random network delay in the forward feedback channels, respectively, is considered this paper. A novel predictive (NPC) scheme proposed to overcome effects data dropout. Stability criteria closed-loop NPC are presented. necessary sufficient conditions for stability NCS time given. Furthermore, it shown that a system bounded stable if its corresponding switched stable. Both simulation study practical experiments show effectiveness

The problem of attitude control for a spacecraft model that is nonlinear in dynamics with inertia uncertainty and external disturbance has been investigated. Adaptive law extended state observer are applied to estimate the disturbance, by which sliding-mode controllers designed combine two approaches order force variables closed-loop system converge reference states. Also, simulation results presented illustrate effectiveness strategies.

This paper is devoted to design adaptive sliding-mode controllers for the Takagi-Sugeno (T--S) fuzzy system with mismatched uncertainties and exogenous disturbances. The in state matrices are norm-bounded, while disturbances assumed be bounded an unknown bound, which estimated by a simple effective approach. Both state- static-output-feedback sliding-mode-control problems considered. In terms of linear-matrix inequalities (LMIs), both sliding surfaces can easily obtained via convex...

This note is devoted to robust sliding-mode control for time-delay systems with mismatched parametric uncertainties. A delay-independent sufficient condition the existence of linear sliding surfaces given in terms matrix inequalities, based on which corresponding reaching motion controller also developed. The results are illustrated by an example.

This paper is concerned with the design of networked control systems (NCSs) random network delay in feedback channel and gives stability criteria closed-loop predictive systems. The principle adopted to overcome effects time delay. necessary sufficient conditions on NCS are derived, which provides useful analytical criteria. system bounded stable if corresponding switched stable. Simulation real-time results give an illustration proposed strategies

A new nonlinear control method for multivariable systems with time delay is presented. It based on a unique active disturbance rejection concept. The proposed controller (ADRC) consists of the tracking differentiator, extended state observer and proportional derivative (PD) controller. In this approach, in input are viewed as higher-order without input, approximation error between nominal real other uncertainties, all which seen 'disturbance' by ADRC actively compensated. techniques...

A novel approach combining the sliding mode control and extended state observer (ESO) is proposed for attitude of a missile model which non-linear in aerodynamics. Combining back-stepping technique, corresponding controller designed to guarantee variables closed-loop system converge reference with help ESO by estimating unknown variable. Also, simulation results are presented illustrate effectiveness strategy.

<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> In this technical note, we improve the results in a paper by Shi <etal/>, which problems of stochastic stability and sliding mode control for class linear continuous-time systems with jumps were considered. However, system considered is switching stochastically between different subsystems, dynamics jump can not stay on each surface subsystems forever, therefore, it difficult to determine whether...

This paper investigates the problem of fault detection for Takagi-Sugeno (T-S) fuzzy discrete systems in finite-frequency domain. By means T-S model, both a filter system and dynamics filtering error generator are constructed. Two performance indices introduced to measure sensitivity disturbance robustness. Faults considered middle frequency domain, while disturbances another certain domain interval. using generalized Kalman-Yakubovic-Popov Lemma local linear design methods presented terms...

This paper considers the problem of designing a sliding mode controller via static output feedback for class uncertain systems with mismatched uncertainty in state matrix. First, we derive new existence condition linear surface terms strict matrix inequalities (LMIs) and propose an adaptive reaching control law such that motion closed-loop system satisfies condition. Second, further consider delay-type switching function, robust stability is given LMIs reduced-order dynamics. Then, synthesis...

The problem of robust state feedback control using delta operator approach for a class linear fractional uncertain systems with time-varying delays is investigated. Based on Lyapunov–Krasovskii functional in domain, new delay-dependent controller presented terms matrix inequalities. sampling-period T an explicit parameter, and thus it easy to observe analyse the effect different sampling periods. proposed method can unify some previous related continuous discrete into framework systems....

This study is concerned with the stochastic stability analysis of networked control systems random network delay. A new scheme termed predictive proposed. mainly consists prediction generator and network-delay compensator. The provides a set future predictions to make closed-loop system achieve desired performance compensator removes effects transmission delay data dropout. criteria are derived. numerical example practical experiment given show potential proposed techniques.

This brief is concerned with the networked predictive control and stability analysis for systems (NCSs) time-varying network communication delay. By taking full advantage of packet-based transmission in NCSs, a state-based approach proposed to actively compensate Based on switched system approach, result also established via average dwell time technique. Finally, effectiveness method illustrated by practical experiment.