Digital control system of electrical arc spraying power source

A digital control system, an arc spraying technology, applied in the fields of excitation or armature current control, electrical components, injection devices, etc., can solve the problems of low integration of control circuits, low modularity of circuit structure, and no full digital control.

Inactive Publication Date: 2006-02-15
SHANGHAI JIAO TONG UNIV +1
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  • Abstract
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Problems solved by technology

Although this system uses software programming to control the external characteristics and the spraying process, its disadvantages are: (1) because the triggering of the main circuit thyristor requires a digital trigger circuit 8253, the storage of the program requires a program memory 2764, and the function keys need to pass parallel I/O interface 8255 input single-chip microcomputer, signal acquisition needs sa

Method used

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  • Digital control system of electrical arc spraying power source

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[0013] Such as figure 1 As shown, the present invention includes: a power transformer, a silicon controlled rectifier circuit, a signal conditioning circuit, a digital signal processor, a Hall current sensor, a Hall voltage sensor, two photoelectric isolation circuits, an H-bridge wire feeding circuit, a single-chip microcomputer, and a signal The output signal of the conditioning circuit is input to the digital signal processor. The digital signal processor outputs the trigger pulse signal through signal processing and calculation. The trigger pulse signal is input to the photoelectric isolation circuit. The output signal of the photoelectric isolation circuit controls the silicon controlled rectifier circuit connected to the output of the power transformer. , The output signal of the digital signal processor is input into the photoelectric isolation circuit, and the output signal of the photoelectric isolation circuit controls the H-bridge wire feeding circuit of the arc sprayin...

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Abstract

The digital control system for arc spraying power belongs to surface technique field, which comprises a power transformer, a silicon controlled rectifier, a signal alignment circuit, a DSP, a Hall current sensor, a Hall voltage sensor, two photoelectric buffers, a H-bridge wire feed circuit, and a SCM; wherein, the signal alignment circuit sends signal into DSP; the DSP outputs trigger impulse signal after signal processing and calculating into buffer; the buffer outputs signal to control silicon controlled rectifier connected with power transformer. This invention improves stability, reliability and flexibility, and realizes information and digital control for spraying power.

Description

technical field [0001] The invention relates to a control system in the technical field of surface processing, in particular to a digital control system for electric arc spraying power supply. Background technique [0002] Arc spraying is a technology that generates an electric arc between metal wires, and the metal wires are atomized by high-speed airflow after being melted at high temperature, and the atomized particles are sprayed onto the metal surface at a high speed. Arc spraying has become the most competitive spraying technology in spraying due to its high efficiency, low energy consumption, high production efficiency, low cost, high coating bonding strength and excellent coating performance. Arc spraying power supply is one of the key factors to ensure the quality of spraying. At present, the commonly used arc spraying power supply is mainly silicon rectifier power supply and silicon controlled rectifier power supply, and the control circuit adopts analog circuit o...

Claims

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Application Information

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IPC IPC(8): B05B7/22H02M7/155H02P7/06
Inventor 华学明舒晶李铸国舒亮蔡艳陈海鸣方君华陈宝林
Owner SHANGHAI JIAO TONG UNIV
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