摘要
无刷直流电动机(BLDCM)是一个强耦合、多变量,非线性、时变的复杂系统。针对常规PID调节器不能实现无刷直流电动机良好调速性能的现状,设计了一种改进的可变参数PI调速控制器。该可变参数PI调速控制器是在对调速范围内的不同转速设计合适的PI控制器的基础上,利用最小二乘法对各个速度点的PI参数进行曲线拟合而成,具有简单实用的特点,能够保证无刷直流电动机在调速范围内任一转速下均有良好的动态响应特性。最后通过Matlab仿真试验,验证了可变参数PI调速控制器的实用性和可靠性,所设计的可变参数PI调速控制器具有良好的实际应用价值。
Brushless DC motor（BLDCM） is a complex system with strong coupling,multivariable,nonlinear and time-varying characteristics.According to the fact that the traditional PID controller can＇t obtain good adjustment performance,a improved PI speed controller with variable parameters is presented in this paper.On the basis of the designed PI controller aim at different speed,the improved controller is obtained from curve fitting to the PI parameters of various speed points using least square method.It can ensure that brushless DC motor has wonderful dynamic response at any speed in speed range and has simple and practical characteristics.Finally,simulation results verify the practicality and reliability of PI speed controller with variable parameters and show that it has good prospects for applications.
出处
《微计算机信息》
2010年第7期11-13,共3页
Control & Automation
基金
基金申请人:杨苹
项目名称:用于节能和可再生能源发电的关键装置矩阵式变换器的研制
基金颁发部门:广东省科技厅(2007B010400080)
