无源性控制在磁悬浮系统中的应用  

Application of passivity-based control in magnetic suspension systems

作　　者：张静[1] 武俊峰[1] 姚小伟[1] 

机构地区：[1]哈尔滨理工大学自动化学院,黑龙江哈尔滨150080

出　　处：《辽宁工程技术大学学报（自然科学版）》2008年第3期384-386,共3页Journal of Liaoning Technical University (Natural Science)

基　　金：国家重点基础研究计划项目(2002CB211803);哈尔滨市培养学科后备带头人基金项目(2005AFXXJ023);黑龙江省教育厅科技研究项目(11511067)

摘　　要：针对磁悬浮系统非线性特点,提出无源性控制对策。从能量平衡角度,将一类仿射非线性系统转换为标准的哈密顿系统,给出了单自由度磁悬浮系统的模型。对系统外界干扰和参数不确定性问题,采用无源性理论设计控制器。文中直接采用哈密顿函数作为存贮函数,不仅保证了数学严密性,而且具有明确的物理意义。仿真结果表明,系统能够快速响应,而且控制方法简单,易于工程实现。In view of the nonlinear characteristic of magnetic suspension system, a passive control method is proposed to transform an affine nonlinear system existing globally into a standard Hamiltonian system from the point of view of energy-balance relation. Based on it, the single-degree-freedom magnetic suspension system mode is presented. Furthermore, for the disturbance attenuation and parametric indetermination problems of this system, the controller is designed using the passive control theory. This paper directly uses the Hamiltonian function as the storage function, which can assure the precise mathematical form and bring more definite physical meaning. The simulation results show that the system has rapid response, and the control method is simple, so it is easy to apply in the engineering.

关 键 词：无源性控制 磁悬浮 非线性系统 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]