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Nonlinear control for a class of hydraulic servo system

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【作者】 余宏冯正进王旭永

【Author】 YU Hong ?, FENG Zheng-jin , WANG Xu-yong (School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200030, China)

【机构】 School of Mechanical EngineeringShanghai Jiaotong UniversityShanghai 200030ChinaChina

【Abstract】 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 con- trollers, this paper’s robust controller based on backstepping recursive design method is easier to design, and is more suitable for implementation.

  • 【文献出处】 Journal of Zhejiang University Science ,浙江大学学报(英文版) , 编辑部邮箱 ,2004年11期
  • 【分类号】TP273.31
  • 【被引频次】3
  • 【下载频次】36
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