磁悬浮系统增益自调整模糊控制器

Gain Fuzzy Self-Tuning Controller of Active Magnetic Bearing System

五自由度磁悬浮轴承控制系统具有实时性要求高、强非线性和难于建立精确数学模型等特点,采用传统的线性PID控制策略时不能根据实际运行状况实现PID参数的在线调整。针对上述问题,选用定点DSP-TMS320F2812为主芯片,设计开发了五自由度磁悬浮轴承系统数字控制器硬件,将传统PID控制与模糊控制相结合设计增益自调整模糊PID控制算法。实验结果表明,设计的磁悬浮轴承系统数字控制器软、硬件性能良好,实现了PID参数的在线自整定,转子能够在6000r/min以下稳定运行。

The five degree freedom active magnetic bearings control system possesses features of high real time requirement,strong nonlinear and difficulty in founding accurate mathematic model.On-line tuning of PID parameters can not be realized when using traditional linear PID control strategy.To these problems,the digital controller of the five degree freedom AMB system is designed using TMS320F2812 fixed-point DSP as main chip.The gain fuzzy self-tuning control algorithm is realized together has traditional PID control and fuzzy control.The results show that the digital controller with good performance,on-line tuning of PID parameters is realized and the rotor can operate on 6,000 rotations per minute stably.