基于DSP的新型无速度传感器直接转矩控制系统

New Speed Sensorless Direct Torque Control System Based on DSP

为了消除常规感应电机直接转矩控制系统中使用速度传感器导致的速度估计误差问题,建立了一种新型无速度传感器DTC控制系统。通过建立新型MRAS模型对电机参数进行在线辨识,达到准确观测转速的目的。为了验证方法的有效性,以TMS320F2808 DSP为核心的控制平台上进行了试验,试验结果证明该方法具有较高的转速估计精度。

In order to eliminate the deviation of speed estimation caused by using speed sensor in the conventional direct torque control system of induction motor ,a new speed sensorless direct torque control system is established. By establishing the improved model reference adaptive system to identify motor parameters on-line,the purpose of accurate speed observation is achieved. In order to verify the validity of the method,the control platform based on DSP TMS320F2808 as the core is established,the results show that the method has higher speed estimation precision.