摘要
研究了基于机械和电气两种结构的磁悬浮系统的自适应控制方案,实现了双环磁悬浮控制系统的稳定悬浮。根据电磁铁动力学方程和电磁线圈的电压平衡方程,建立了磁悬浮系统基本模型。对系统中的电气部分和机械部分采用不同的控制方法:电气部分采用模型参考自适应控制的方法,加快电流上升的速度,使电流环性能达到设定指标;机械部分简化模型建立在电气自适应控制的基础上,针对系统参数的慢变特点而采用自校正控制方法,给出了能够自动跟踪系统参数,尤其是悬浮质量变化的稳定悬浮自适应控制算法。仿真和实验结果均证明这种控制方法能够使电流环快速跟踪给定信号,保证此悬浮系统能够很好地适应悬浮质量发生突变的情况,具有一定的实用价值。
The adaptive control scheme was studied based on different electrical structure and mechanical structure of the magnetic suspension, and the stable levitation of the double - loop magnetic suspension system was realized The magnetic suspension system model was found based on electromagnet dynamics description and voltage balance equations of the electromagnet coil. Different control methods were applied to electrical part and mechanical part in the magnetic suspension system. Model Reference Adaptive Control（MRAC） was applied to the electrical part, this would quicken the rising speed of the current and make the current loop achieve its target. The reduced mechanical structure model was constructed based on the electrical adaptive controlling. Corresponding to the slow change characteristic of the system parameters, self - tuning control was applied to the mechanical part and the detail of the adaptive arithmetic was given. The simulation experiment shows the practicability of the control method because it can automatically adjust when the mass of the load is suddenly changed,
出处
《计算机仿真》
CSCD
2006年第8期293-295,301,共4页
Computer Simulation
基金
国家自然科学基金资助项目(60404003)
霍英东教育基金优选资助课题(94028)
关键词
磁悬浮系统
模型参考自适应控制
自校正控制
Magnetic suspension system
Model reference adaptive control
Self - tuning control
