基于滑模观测器的无速度传感器技术在PMSM中的应用  

Based on the sliding mode observer without speed sensor technology in the application of PMSM

作　　者：解佳鹏 

机构地区：[1]中船重工715研究所,浙江杭州310010

出　　处：《机电工程》2015年第10期1362-1365,共4页Journal of Mechanical & Electrical Engineering

摘　　要：针对传统速度传感技术在工程应用中存在的安装精度、应用环境、成本等问题,提出了滑模观测器的无速度传感器技术,设计了基于电机模型的滑模观测器用于估算电机的转子位置和速度,针对传统的滑模变结构中采用切换开关引入的抖振问题,提出了使用饱和函数消弱抖振。在Simulink中进行了建模和仿真,并在基于TMS320F2812的实验平台上进行了算法实现。研究结果表明:基于滑模观测器的无传感器技术可精确地估算出电机转速,替代传统传感器进行双闭环矢量控制,从而提高系统的可靠性。Aiming at the problems of the traditional speed sensing technology in engineering applications such as the installation precision,the application environment,the cost and so on,a sliding mode observer for the speed sensorless technology was presented. Based on the model of the motor,the sliding mode observer used for motor rotor position and speed estimation was designed,in view of the traditional sliding mode variable structure by introducing switching the chattering problem,using saturation function weaken the chattering. Moleling the SMO in Simulink,the proposed method was demonstrated on the basis of TMS320F2812. The results indicate that sensorless technique based on sliding mode observer can estimate the speed of the motor,and can replace the traditional sensor in the FOC control systerm,and improve the reliability of the system.

关 键 词：永磁同步电机 滑模观测器 无速度传感器 DSP 

分 类 号：TH39[机械工程—机械制造及自动化] TP273[自动化与计算机技术—检测技术与自动化装置]