A microprocessor-based thermal expansion displacement controller is building using laser sensor and periphery circuit, and using screen circuit for switch current-constant and thermal expansion displacement control rule each other.

• 利用激光位移传感器及其外围电路,建立了热膨胀的微机点焊控制系统,并使用屏蔽电路实现恒流控制与热膨胀控制的相互切换。