Mobile wire induction heating controller

Abstract

The invention discloses a mobile wire induction heating controller, which comprises a CPU system control module, a data acquisition module, a data adapter module, a startup control module, a pulse forming module and a man-machine conversation module, wherein the CPU system control module consists of an INTEL80X86 processor, an INTEL80X87 floating point coprocessor, a DISKONCHIP electronic disc and a dynamic storage; the data acquisition module comprises an analogue value input unit, switching value input and output units and a counter triggering unit; the data adapter module consists of a direct current voltage acquisition unit, an analogue value acquisition adapting unit, switching value input and output adapting units and a synchronous signal conversion unit; the startup control module comprises a startup control logic unit and a pre-magnetization triggering unit; the digital pulse forming module comprises a synchronous signal shaping unit, a triggering angle calculation unit, a triggering pulse forming unit and a power amplification unit; and the man-machine conversation module comprises a liquid crystal display unit and a serial communication unit.

Description

Technical field [0001] The invention relates to the field of advanced manufacturing and automation control, in particular to a mobile wire induction heating controller. Background technique [0002] Metal wires such as prestressed steel wires, steel strands, and aluminum-clad steel wire power overhead wires need to be moved in the intermediate frequency power inductor during induction heating, and the intermediate frequency induction heating power supply is required to output different powers according to the moving speed of the wire, and the temperature of the heated wire It should be controlled within the range of 380℃±10℃. With the acceleration of the mobile wire production line, the maximum can reach 110 meters per minute, and the maximum wire diameter is 1x19-28.6mm 1860Mpa (the steel strand is divided into three layers and twisted together by 19 steel wires, which are released at the same time during the stranding process. Tension, the tensile strength of rigid stranded wi...

AI Technical Summary

Problems solved by technology

At present, the induction heating power supply used in prestressed steel strands in China is mainly composed of separate components. For example, the PID regulator is composed of resistors, capacitors, and operational amplifiers. The degree of integration is low, the composition of the controller is complex, and the control accuracy is not high at different speeds. , the temperature changes greatly when accelerating or decelerating, which cannot meet the temperature control requirements, and the quality of wire processing is unstable

[0003] At present, the moving wire induction heating controller is still composed of analog devices, which has a complex structure and is inconvenient to adjust. During long-term operation, the analog devices are dispersed, which will cause changes in the control accuracy of the system; When running at high speed, the temperature control accuracy is not high; there is no temperature closed-loop control and over-temperature monitoring, when the wire diameter of the heating wire and the ambient temperature change, it is easy to cause a large deviation between the actual heating temperature and the set temperature; there is no acceleration compensation adjustment, When the heated wire runs up or down, the temperature changes greatly, and the temperature of the heated wire tends to be low or high

Images