关键词: 电动按摩椅, 直流有刷电机, H桥, L298N, 脉冲宽度调制

Abstract: As people become more concerned about healthy economy, electric massage appliances, as a product that integrates machinery, electronics, information technology and sensors, are becoming more common ordinary people’s household appliances. Electric massage chairs as a typical example of electric massage appliances, have been widely used in recent years. Based on the performance requirements of the electric massage chair, this article selects the DC brush motor that meets the requirements and designs the corresponding drive circuit to realize the forward and reverse rotation and speed control functions of the DC brush motor. It meets the performance requirements of the existing electric massage chair after testing, and can be transplanted to the existing electric massage chair for use.

Key words: Massage chair, DC brush motor, H bridge, L298N, Pulse width modulation