Hydraulic support is important equipment in the fully mechanized mining face, and control performance of hydraulic multi-cylinder system directly affects smooth progress coal process, which basis for continuous advancement face. However, friction force process pulling frame complex due to underground environmental load. Moreover, parameters moving cylinder are uncertain, state cannot be measure...

This paper considers a tracking problem of nonlinear feedback control systems with perturbations based on robust right coprime factorization. The proposed universal design scheme on the nonlinear control system can not only guarantee the robust stability of the perturbed systems but also realize the output tracking to the reference input. And the effectiveness of the proposed method is confirme...

The problem of adaptive output tracking is researched for a class of nonlinear network control systems with parameter uncertainties and time-delay. In this paper, a new program is proposed to design a state-feedback controller for this system. For time-delay and parameter uncertainties problems in network control systems, applying the backstepping recursive method, and using Young inequality to...

Abstract: This paper presents a new procedure for discrete-time robust structured control design. Parameter-dependent nonconvex conditions for stabilizable and induced L2-norm performance controllers are solved by an iterative linear matrix inequalities (LMI) optimization. A wide class of controller structures including decentralized of any order, fixed-order dynamic output feedback, static out...

This research deals to introduce a new method for generalizing the well-famed Quantitative Feedback Theory (QFT) in granting robustness of Feedback linearization on nonlinear systems. In this new scheme, first applying feedback linearization, with selecting operating points in domain of system parameter's variations, nonlinear systems replaced with linear systems, then robust controller is desi...

in this paper, a new t-s fuzzy hyperbolic delay model for a class of nonlinear systems with time-varying delay, is presented to address the problems of stability analysis and feedback control. fuzzy controller is designed based on the parallel distributed compensation (pdc), and with a new lyapunov function, delay dependent asymptotic stability conditions of the closed-loop system are derived v...

Active vibration control is an important problem in structures. One of the ways to tackle this problem is to make the structure smart, adaptive and self-controlling. The main objective of active vibration control is to reduce the vibration of a system by automatic modification of the system’s structural response. This work features the modeling and design of a robust decentralized controller fo...

This paper proposes a systematic methodology for designing robust static output feedback sliding mode control (SOFSMC) for a class of systems with mismatched uncertainties. This methodology consists of two parts: one is a new sufficient and necessary condition for the existence problem in terms of two matrix inequalities; the other is a direct solving method using the iterative linear matrix in...

In this paper, first a new algorithm for pole assignment of closed-loop multi-variable controllable systems in a prescribed region of the z-plane is presented. Then, robust state feedback controllers are designed by implementing a neural fuzzy system for the placement of closed-loop poles of a controllable system in a prescribed region in the left-hand side of z-plane. A new method based on the...