Study on the Servo Drive of PM-LSM to Be Used in Parallel Synchronous Drive

Recently, linear motors can have high speed control, high acceleration-deceleration. So linear motors are widely used in industrial applications such as precision machine tools. In our laboratory focusing on transport system, we propose parallel synchronous drive of used the PM-LSM (permanent magnet linear synchronous motor). It can pass luggage without having to stop the working. When you establish “parallel synchronous drive”, a motor follows the other motor. In our laboratory, one of the motors is called “master motor” and the other motor called “slave motor”. The master motor’s speed and position pass slave motor then establish parallel synchronous drive. Therefore, slave motor requires high-responsive and precision that follows the master motor. This paper focuses on the control of the slave motor.