Nonlinear control for a class of hydraulic servo system

被引：35

作者：

Yu H. ^{[1
]}

Feng Z.-J. ^{[1
]}

Wang X.-Y. ^{[1
]}

机构：

[1] Sch. of Mech. Eng., Shanghai Jiaotong Univ.

来源：

Journal of Zhejiang University-SCIENCE A | 2004年 / 5卷 / 11期

关键词：

Backstepping; Electro hydraulic servo system; Lyapunov function; Nonlinear system; Robust control;

D O I：

10.1631/jzus.2004.1413

中图分类号：

学科分类号：

摘要：

The dynamics of hydraulic systems are highly nonlinear and the system may be subjected to non-smooth and discontinuous nonlinearities due to directional change of valve opening, friction, etc. Aside from the nonlinear nature of hydraulic dynamics, hydraulic servo systems also have large extent of model uncertainties. To address these challenging issues, a robust state-feedback controller is designed by employing backstepping design technique such that the system output tracks a given signal arbitrarily well, and all signals in the closed-loop system remain bounded. Moreover, a relevant disturbance attenuation inequality is satisfied by the closed-loop signals. Compared with previously proposed robust controllers, this paper's robust controller based on backstepping recursive design method is easier to design, and is more suitable for implementation.

引用

页码：1413 / 1417

页数：4

共 13 条

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