一种新型无速度传感器直接转矩控制系统

A New Speed Sensorless System for Direct Torque Control of Induction Motors

无速度传感器技术中最常用的方法是自适应观测器,观测器的增益和速度自适应律决定了观测器的性能。传统采用极点配置方法的自适应观测器存在区域不稳定的问题,在此针对该缺陷提出了一种新型观测器。在DSP电机开发平台上实现了无速度传感器直接转矩控制系统,实验结果验证了该方案的可行性。

The speed-adaptive observer is the most commonly used method in the speed sensorless technology,the observer gain and the speed-adaptation law determine the properties of the observer.Traditional observer that using the pole-placement technique exist the problem of unstable regions,a new observer is proposed for this problem.The proposed system is realized in the DSP develop platform of motor control,and the validity of the proposed system is proved by the experiment.