摘要
进给机构的磁悬浮系统由于结构的特点在进给运动中存在着水平y方向及垂直z方向的磁力和位移耦合现象.为此,分析推导了该磁悬浮系统的动力学方程,建立了相应的磁悬浮控制系统的状态方程.理论分析计算及仿真结果表明:通过采用状态反馈结合输入变换,可以使原来包含着变量间耦合的复杂控制系统实现解耦控制,简化了磁悬浮系统的控制过程,有利于提高进给机构运动的平稳性和定位精度.
There are magnetic force coupling and displacement coupling on both horizontal y-axes and vertical z-axes in a magnetic levitation (maglev) system when the feeding mechanism moves. Dynamics analysis of the maglev system is run. A correlative dynamics equation and a state equation of control system are established. The equations indicate that the control system is a coupling system. After theoretical analyzing and simulated experiment, the result shows that the complicated coupling control system can be transformed to an easy decoupling control system after applying state feedback and input transformation. This will predigest the control process and be useful to improve the stability and precession accuracy to the feeding mechanism.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2005年第3期325-328,共4页
Journal of Harbin Institute of Technology
基金
吉林省自然科学基金资助项目(20020621)
中国科学院研究生科学与社会实践创新研究专项资助项目
关键词
磁悬浮
进给机构
耦合
状态反馈
解耦控制
Computer simulation
Equations of motion
Feeding
Magnetic couplings
Partial differential equations
State feedback
Transfer functions
