永磁型无轴承电机悬浮系统的PID-PD控制  

The PID-PD Control for Permanent Magnet Bearingless System

作　　者：姜海博[1] 黄进[1] 康敏[2] 程帅[1] 

机构地区：[1]浙江大学电气工程学院,浙江杭州310027 [2]浙江科技学院电气学院,浙江杭州310013

出　　处：《电力电子技术》2011年第10期114-116,共3页Power Electronics

基　　金：国家自然科学基金(50677060);浙江省科技计划项目(2008C21163)~~

摘　　要：PID控制器被广泛应用于控制各种稳定的系统,其参数可采用Ziegler Nichols的方法进行确定,但对于不稳定系统采用PID控制,一般需进行大量的调试工作。此处采用双环PID控制,先将系统内环转化为稳定的控制模型,再通过外环控制器改善系统性能,针对永磁型无轴承电机(PMBM)的数学模型,设计了PID-PD控制器。此处给出了无轴承系统PID-PD控制与传统PID控制间的关系,即该方法可用于永磁无轴承电机调试现场中PID参数的预估,仿真和实验证明了该方法的可行性。PID controller is widely implemented in all kinds of stable processes, and its coefficients could be derived by many algorithms like Ziegler Nichols,while PID for unstable process is less common.PID-PD controller is adopted. The inner controller is aimed to stabilize the unstable process while the outer loop controller is used to improve the performance of the overall system.According to the analytical model of permanent magnet bearingless motor, PID-PD controller is designed.Besides, the relationship of this scheme and the classic PID controller in bearingless system is analyzed, and it is indicated that the control strategy mentioned could be used for the approximation and prediction of conventional PID coefficients.The simulation result and the experiments results verify the feasibility of the given methods.

关 键 词：永磁无轴承电机 比例-积分-微分控制 悬浮力 

分 类 号：TM351[电气工程—电机]