关键词：直线同步电机；双速率采样观测；位置和速度控制器；霍尔传感器
摘 要：This paper proposes a method of motor-position acquisition from hall sensors installed on the mover of linear synchronous motor. The sensors are combined to Dual-rate sampling observer to estimate motor speed and position. Then this paper describes a design method of speed and position controllers for smooth transition between alternating speed and position control. And the parameters of speed controller are variable with motor speed.