无刷直流电机锁相环稳速系统建模与仿真  

Modeling and Simulation of BLDCM Constant-speed Control System Based on PLL

作　　者：徐蕾[1] 马瑞卿[1] 孙银川[1] 王穆移[1] 

机构地区：[1]西北工业大学自动化学院,陕西西安710072

出　　处：《计算机仿真》2010年第2期339-342,共4页Computer Simulation

摘　　要：研究无刷直流电机高精度稳速系统中的转速、电流双闭环控制技术,采用了锁相环(PLL)技术用于无刷直流电机转速控制中。根据数学模型推导出了锁相环的传递函数并建立了仿真模型。在Matlab7.0/Simulink环境下,搭建了无刷直流电机双闭环锁相稳速系统仿真模型进行仿真,得出了速度阶跃响应的相电流、反电势、转速响应曲线以及转速波动曲线。仿真结果验证了各环节数学模型的有效性,证明了锁相环控制是提高无刷直流电机转速稳定度的有效手段。This paper studies on high accuracy constant -speed system of BLDCM, in which dual -loop of speed and current control is used. Isolated functional blocks, such as Phase - locked Loop （PLL） block, and BLDCM block was modeled in Matlab7. 0/Simulink circumstance. Then, speed controller based on PLL was established and used in constant - speed system of BLDCM. The validity of the model has been proved by simulation results, and it also verifies that PLL control can improve the stability of motor speed control.

关 键 词：无刷直流电机 仿真模型 双闭环控制 锁相环 

分 类 号：TM381[电气工程—电机]