摘要
针对超声波电机运行过程中表现出的非线性及时变特性,给出一种模糊PI控制策略。为减少模糊调节器的在线计算量,提高转速控制的实时响应速度,在保证控制性能符合期望的前提下,通过分析每一条模糊规则对转速控制性能的影响程度,保留影响大的规则、剔除影响小的规则,从而将模糊规则数量减少了87%。仿真结果证明了所述方法的有效性,且电机控制性能良好。
A kind of fuzzy PI strategy is put forward against the nonlinear and time-varying performance of the ultrasonic motor during its working process.In order to reduce the online calculation of the fuzzy regulator and improve the real-time response speed,the rule with large influence on the speed-control is retained while the rule with little influence on the speed-control is removed through analyzing the influencing degree of each fuzzy rule to guarantee the premise that the control performance meets with the expectation,thus,reducing the number of fuzzy rules by87%.The simulation results show that the method is effective and motor control performance is excellent.
作者
刘玉可
史敬灼
LIU Yuke;SHI Jingzhuo(Henan University of Science and Technology)
出处
《电机技术》
2019年第6期16-19,43,共5页
Electrical Machinery Technology
基金
国家自然科学基金(U1304501).
关键词
超声波电机
模糊控制
规则简化
ultrasonic motor
fuzzy PI speed control
rule simplification
