基于DSP的磁悬浮轴承数字控制系统

主动磁悬浮轴承是利用电磁铁产生可控电磁力将转子无接触地悬浮于定子间气隙中的一种新型轴承.为了实现高精度的控制,在介绍主动磁悬浮轴承的总体结构及工作原理的基础上,给出了基于数字信号处理器(DSP)TMS320 F2812芯片的磁轴承控制系统的硬件及软件设计方案,分析了变参数PID控制的原理,并对所设计的试验装置的控制策略进行了仿真研究.仿真结果表明:所设计的磁轴承数字控制系统具有稳定性好、响应速度快、超调量小和控制精度高等优点,满足了磁轴承控制性能的要求.

Digital Control System of Active Magnetic Bearing Based on DSP

Active magnetic bearing(AMB) is an new-type bearing in which the rotor is suspended in the air gap between it and stator by the controllable electromagnetic force provided by electromagnets and rotates frictionlessly.Describes its construction and operating principle.To gain high-precision control,a mathematical model of AMB is developed with a design scheme given for the hardwares/softwares of AMB control system using DSP(digital signal processor) TMS320 F2812.Discusses the principle of PID(proportional-integral-differential) control of variable parameters with a simulation done to investigate the control scheme of the experimental setup designed.The simulation results showed that the digital control system of AMB has such advantages as high stability,fast response,small even no overshoot and high control precision,thus meeting the requirements of AMB control performance.