In the process of writing this thesis, first, based on the theory of the DC motor, controller and sensors, the control circuit has been designed.

在论文的写作过程中，首先对直流电机、微控制器和传感器等进行了深入的研究，在理论基础上，设计了系统的控制电路。

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Using PWM to drive motor, and we design a circuit in DC serve control system.

利用PWM驱动方式控制电机的转动，并设计出了直流伺服控制系统硬件电路图。

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A 150a DC TIG welding machine is developed, using specially designed thyristor rectifier and IC control circuit, which is simple, reliable and of high quality.

研制了一种150a直流tig焊机，采用特殊的晶闸管主电路和集成电路控制技术，具有简单、可靠和高性能的特点。

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