中文摘要：

以主动磁悬浮轴承为研究对象,提出了一种数模混合式PID控制器的工作原理.针对数字控制器和模拟控制器在主动磁悬浮系统应用中的不足,基于TMS320F28335和数字电位器设计了一种主动磁悬浮轴承中的数模混合式PID控制器.控制器实现了PID参数的实时调整,使得磁悬浮系统能够最大程度的适应某些瞬态需求.经过实验验证,设计的数模混合式PID控制器能够满足主动磁悬浮轴承的要求,使系统的稳定性和鲁棒性得以增强.

英文摘要：

Taking active magnetic bearing as research object, working principle of digital-analog combined controller is proposed. For disadvantages of digital and analog controller, a kind of digital-analog combined PID controller is designed using active magnetic bearing based on TMS32028335 and digital potentiometer. The controller realizes adjusting PID parameters in real time and makes magnetic levitation system adapt some transient requirements to the greatest extent. By the proving of experimentation, the PID controller can meet the demand of active magnetic bearing and improve the robustness and stability of the system.