Network-based pipeline all-position welding control system

Abstract

The invention discloses a network-based pipeline all-position welding control system, comprising a master control unit (4), wherein the master control unit (4) is used for outputting welding parameters of each spatial feature points by a control network, transmitting data, such as positions, speed, torque and the like by the control network and a welding tractor system, and simultaneously transmitting aperiodic data, such as, configuring parameters, state information and the like between the control network and the welding tractor system; all procedure parameters of a motion control system are transmitted to the master control unit (4) through the control network; a welding tractor traveling control unit (11) is used for performing interpolation calculation to obtain a welding parameter of a current spatial position; and a welding power supply (3) is used for calculating matched wire feeding speed and performing arc welding by using the welding parameter of the position so as to realize the continuous variation of the welding process parameters. The network-based pipeline all-position welding control system disclosed by the invention is simple in structure and reliable in operation, and can be used for realizing the computer-based integrated control over a pipeline welding process and realizing the cooperative control over all subsystems through the control network, and thus, the welding quality and the welding speed are increased.

Description

technical field [0001] The invention relates to welding equipment, in particular to a network-based all-position welding control system for pipelines. Background technique [0002] At present, most of the mature pipeline welding machine control systems at home and abroad adopt centralized control. There is little data interaction between each functional system, and it is impossible to realize collaborative control between multiple subsystems. The welding process requires more manual participation, and the welding quality needs to be improved urgently. [0003] The existing pipeline all-position welding control system mainly includes: main control unit, welding car, welding power supply and hand controller, etc. The main control unit is composed of PLC programmable controller, single-chip microcomputer or digital signal processor (DSP) chip , the connection between the main control unit and the welding car, welding power supply, and hand controller is usually in the form of d...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the mature pipeline welding machine control systems at home and abroad adopt centralized control, and the data interaction of each functional system is less, and the collaborative control between multiple subsystems cannot be realized. The welding process requires more manual participation, and the welding quality needs to be improved urgently.

[0003] The existing pipeline all-position welding control system mainly includes: main control unit, welding car, welding power supply and hand controller, etc. The main control unit is composed of PLC programmable controller, single-chip microcomputer or digital signal processor (DSP) chip , the connection between the main control unit and the welding car, welding power supply, and hand controller is usually in the form of direct connection of I / O signals. There are many cables and the signals are easily interfered; Separately installed on the main control unit and the welding car; between the welding power source and the main control unit, the parameters are set by analog quantity, the anti-interference ability is poor, the precision is low, the amount of welding process that can be monitored is small, and it is very difficult to achieve fine welding; The scalability of the system is poor, which is not conducive to the expansion of system functions; the existing pipeline all-position welding control system cannot realize the historical record and query of welding process data, let alone realize the multiple selection of welding system process and equipment parameters, etc.

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