Motor controller design of patient transfer apparatus

A motor controller based on STM32F103 MCU, which is designed for the patient transfer apparatus is presented. Firstly, according to the working principle of the apparatus, the power of the motor is calculated, and the selection of the motor is carried out. According to the chosen motor, the controller's hardware circuit design is carried out. According to the need of apparatus control, the controller adopts the double loop speed control algorithm which is added with the speed forward feed control. The controller has two operation modes, torque mode and speed mode, and the two modes can be switched flexibly during the work process. The controller uses CAN bus communication, makes the network control more easily. A controller parameters debug software programed with QT makes it easy to setup the controller parameters. The software can greatly shorten the time of parameter adjustment. Finally, the related experiment is carried out, and the result indicates that the controller can complete the control task well.