Research And Manufacture Of Spraying Automatic Thickness Control System

Spraying automatic thickness control system is an equipment using computer control the spraying thickness of workpiece. CCD combined with optical system as the method of thickness measure, single chip microcomputer is the core of controlling strategy, completes the automatic measure and control system of joint component spraying thickness in this paper. It has great practical significance to improve thickness uniformity, consistency and reduce the loss.The process of powder flame spraying is analyzed and a closed-loop and a open-loop control models of the joint component powder spraying are established in this paper. Linear CCD technology combined with optical system to achieve a coating thickness measure system for the closed - loop control method. A control model based on thickness measure, walking speed and time is proposed. A control model based on powder feeding rate, rotate speed, walking speed and time is also proposed for the open - loop control method. And expert control system is used in the control strategy.A systematic architecture and a distributed control system based automatic spraying thickness measure and control system are completed in this paper. In addition, all control modules of which single chip computer as the core are designed. Control model and control strategy through software, information transmit between every control module and monitoring center are realized.A lot of debug are achieved in industrial environment. Then the function is confirmed and data is analyzed. Proposed system model and algorithm is reasonable and effective, and the purpose is achieved.