【摘要】 大型球磨机采用永磁直驱电机作为驱动电机后，由于电机的定子被分块，各个子模块电机之间如何运行是一个很重要的问题。工业生产中的球磨机工作环境较差，例如高温与高压、湿度较大，以及连续工作时间长，容易造成传感器故障。传感器是永磁同步电机控制系统中的重要组成部分，且球磨机驱动电机是一种低速大转矩的永磁电机，因此在传感器发生故障后，如何使系统从带传感器的控制方式平稳过渡到无传感器的控制方式，显得尤为关键。基于此，分析了永磁同步电机的数学模型，提出了一种故障情况下基于滑模控制的容错控制策略，并用MATLAB仿真验证了所提控制策略的可行性。更多还原

【Abstract】 After using permanent magnet direct drive motor as driving motor for large ball mill, how to run each submodule motor becomes a very important problem because the stator of the motor is partitioned. The working environment of ball mill in industrial production is relatively poor, such as high temperature and high pressure, high humidity and long continuous working time, which is easy to cause sensor failure. Sensor is an important part of the permanent magnet synchronous motor control system. Since the ball mill drive motor is a low speed and high torque permanent magnet motor, how to make the system smoothly transition from sensor control mode to sensorless control mode after sensor failure is particularly critical. This paper describes the mathematical model of permanent magnet synchronous motor, proposes a fault tolerant control strategy based on sliding mode control, and verifies the feasibility of the proposed control method by MATLAB simulation.更多还原