ApplicationResearchofFuzzyControlMethodsUsedinWeldingRobot英语.docx

Application Research of Fuzzy Control Methods Used in Welding RobotAbstract-In this research, it developed a main control program and a fuzzy distinguishing sub program based on the open operation system for users of the CLOOS welding robot. With the help of the fuzzy distinguishing sub program, the robot could automatically search the correctly welding seam start point and avoided wrong stopping because of none finding welding seam start point. After running the robot; moreover, the fuzzy distinguishing sub program could also distinguish components positive side or opposite side which would to be welded according to the input signal, and then automatically call the corresponding welding sub program of the component saved in the robot hard disk which had been taught program with the standard component to finish the welding tasks, which could greatly increase the production efficiency and intelligence of the robot. After finished the welding tasks, the control system could return the main control program automatically and prompt a message for another operation or new welding tasks.Keywords-welding robot; fuzzy control; intelligent control; fuzzy distinguishingINTRODUCTIONWith the development of industry robot technology, welding robot and robot automatic welding technology are used in mechanical fields for metal components sewing and manufacture more and more. In order to satisfied different requirements of welding tasks, functions of welding robot control system are improved perfect more and more [I, 2], such as intelligent control system [3], welding seam tracking technology [4], advanced adaptive capability [5]. Besides the above new functions, robot control system is designed more open for users to add different outside equipments, develop and expand functions of robot.But in fact, the assembly size errors of components are usually big enough to make robots difficult to find the correctly welding seams, which usually make the robot start at wrong point and weld w