CN100387358C - Digital control system of electrical arc spraying power source - Google Patents
Digital control system of electrical arc spraying power source Download PDFInfo
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- CN100387358C CN100387358C CNB2005100279275A CN200510027927A CN100387358C CN 100387358 C CN100387358 C CN 100387358C CN B2005100279275 A CNB2005100279275 A CN B2005100279275A CN 200510027927 A CN200510027927 A CN 200510027927A CN 100387358 C CN100387358 C CN 100387358C
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Abstract
The present invention relates to a digital control system of an electrical arc spraying power source, which belongs to the technical field of a surface. The present invention comprises a power transformer, a silicon controlled rectifying 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 and a single chip computer, wherein a signal conditioning circuit outputs signals to be input into the digital signal processor; the digital signal processor outputs start pulse signals by signal processing and calculation; the start pulse signals are input into the photoelectric isolation circuits; the photoelectric isolation circuits output the start pulse signals to control the silicon controlled rectifying circuit connected with the output end of the power transformer; the digital signal processor outputs the signals to be input into the photoelectric isolation circuits. The present invention uses a full digital control electric arc spraying power source to replace an analog control or analog-digital hybrid control electric arc spraying power source to improve the stability, the manufacturability, the reliability and the flexibility of the electric arc spraying power source and realize the informatization and the digital control of the spraying power source.
Description
Technical field
What the present invention relates to is the control system in a kind of Surface-micromachining process field, specifically, is a kind of digital control system of electrical arc spraying power source.
Background technology
Electric arc spraying is a kind of electric arc that produces between wire, by high-speed gas atomization, and with very high speed the particle of atomizing is sprayed to the technology of metal surface after the wire high temperature melting.Electric arc spraying with its efficient height, energy consumption is low, production efficiency is high, cost is low, the high and excellent coating performance of anchoring strength of coating becomes the most competitive a kind of spraying technology in the spraying.Electrical arc spraying power source is one of key factor that guarantees coating quality.At present, electrical arc spraying power source commonly used is mainly silicon rectifier formula power supply and silicon controlled rectifier power supply, and control circuit adopts analog circuit or Single-chip Controlling mode.
Find by prior art documents, Li Heqi " development of computer control electric arc spraying equipment " (" Gansu Polytechnical Univ's journal ", Vol.24 No.2 Jun.1998) the ASM-630DN type electrical arc spraying power source pointed out in the literary composition adopts the accurate control of chip microcontroller to the external characteristics of spraying source, dynamic characteristic, wire feed rate, and this control system is made up of MCS96 series monolithic 8098, program storage 2764, parallel I/O interface 8255, digital flip flop 8253, sampling amplifying circuit, synchronous circuit and display driver circuit etc.Though this system adopts software programming control external characteristics and spraying process, but its weak point is: (1) is because the triggering of main circuit thyristor needs the storage of digital flip flop 8253, program to need program storage 2764, function button to import single-chip microcomputer by parallel I/O interface 8255 input single-chip microcomputers, the signals collecting amplifying circuit of need sampling, so the integrated level of control circuit is low, circuit is complicated; (2) single-chip microcomputer is not only controlled human-computer interface systems such as external characteristics and spraying process but also control parameter display circuit, preset parameter in the control system, so the circuit structure design degree of modularity is low.(3) owing to contain analog circuit in the system, so control system essence is analog-and digital-mixed control mode, do not realize full-digital control.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of digital control system of electrical arc spraying power source is provided, make it substitute simulation control or analog-and digital-mixing control electrical arc spraying power source with digital control electrical arc spraying power source, to improve stability, manufacturability, reliability, the flexibility of electrical arc spraying power source, realize informationization, the Digital Control of spraying source.
The present invention is achieved by the following technical solutions, the present invention includes: power transformer, SCR rectification circuit, signal conditioning circuit, digital signal processor, Hall current sensor, the Hall voltage sensor, two photoelectric isolating circuits, H bridge wire feeding circuit, single-chip microcomputer, signal conditioning circuit output signal supplied with digital signal processor, digital signal processor is handled by signal and computing output start pulse signal, start pulse signal input photoelectric isolating circuit, the SCR rectification circuit that the control of photoelectric isolating circuit output signal links to each other with the power transformer output, digital signal processor output signal input photoelectric isolating circuit, the H bridge wire feeding circuit of photoelectric isolating circuit output signal control electric arc spraying, System for Electric Arc Spraying Current and voltage detect through Hall current sensor and Hall voltage sensor respectively, Hall current sensor and Hall voltage sensor detection signal supplied with digital signal processor, FEEDBACK CONTROL is carried out in signal processing by digital signal processor, and serial port of single chip computer is connected with the digital signal processor serial port carries out bidirectional data communication.
Described signal conditioning circuit, the detection of grid voltage fluctuation signal, signal conditioning circuit output signal supplied with digital signal processor is handled the SCR rectification circuit that links to each other with the power transformer output by photoelectric isolating circuit control with computing output start pulse signal through signal.
Described Hall voltage sensor, the external characteristics of detection electric arc spraying voltage supplied with digital signal processor FEEDBACK CONTROL spraying source.
Described Hall voltage sensor, detect System for Electric Arc Spraying Current supplied with digital signal processor, thereby improve the stability of spraying current through the pulse signal that signal is handled and the computing output pulse width is adjustable by the wire feed rate of photoelectric isolating circuit control H bridge wire feeding circuit.
Described single-chip microcomputer, control LCD and keyboard, the setting of electric arc spraying parameter is by keyboard input, liquid crystal display, and digital signal processor obtains the value of setting of electric arc spraying parameter by serial port and single chip communication swap data.
In the arc spray process, the Hall voltage sensor detects electric arc spraying voltage, and the D/A converter module on the digital signal processor sheet converts digital quantity to, by the external characteristics of signal processing and computing FEEDBACK CONTROL spraying source.Hall current sensor detects System for Electric Arc Spraying Current, D/A converter module on the digital signal processor sheet converts digital quantity to, by signal handle and computing by the adjustable pulse signal of PWM module output pulse width on the digital signal processor sheet, thereby through the stability of the wire feed rate raising spraying current of photoelectric isolating circuit control H bridge wire feeding circuit.The silicon controlled phase shift triggers by the pulse of the output of the PWM module on the digital signal processor sheet and controls the phase shifting angle size through photoelectric isolating circuit.By Single-chip Controlling, digital signal processor communicates the value of setting that swap data obtains the electric arc spraying parameter by serial port and single-chip microcomputer as the man-machine interface of full-digital control spraying source for LCD and keyboard.To " soft ", " simulation " is to the transformation of " numeral " by " firmly " in the control that the present invention makes electrical arc spraying power source.
The present invention adopts high integration digital signal processor and double CPU of microcomputer as the control core, thereby digital signal processor carries out Digital Signal Processing output signal control SCR rectification circuit to input signal, realizes the control of spraying electric arc external characteristics.Human-computer interface systems such as the LCD of Single-chip Controlling management spraying source, keyboard.Digital signal processor carries out the transmission and the exchange of data by serial port and microcontroller communication.This system has that the control circuit height is integrated, circuit structure modularization, parameter setting and show characteristics such as hommization, has realized full-digital control.
Description of drawings
Fig. 1 is a structured flowchart of the present invention.
The specific embodiment
As shown in Figure 1, the present invention includes: power transformer, SCR rectification circuit, signal conditioning circuit, digital signal processor, Hall current sensor, the Hall voltage sensor, two photoelectric isolating circuits, H bridge wire feeding circuit, single-chip microcomputer, signal conditioning circuit output signal supplied with digital signal processor, digital signal processor is handled by signal and computing output start pulse signal, start pulse signal input photoelectric isolating circuit, the SCR rectification circuit that the control of photoelectric isolating circuit output signal links to each other with the power transformer output, digital signal processor output signal input photoelectric isolating circuit, the H bridge wire feeding circuit of photoelectric isolating circuit output signal control electric arc spraying, System for Electric Arc Spraying Current and voltage detect through Hall current sensor and Hall voltage sensor respectively, Hall current sensor and Hall voltage sensor detection signal supplied with digital signal processor, FEEDBACK CONTROL is carried out in signal processing by digital signal processor, and serial port of single chip computer is connected with the digital signal processor serial port carries out bidirectional data communication.
Described digital signal processor, the model of selecting for use American TI Company to produce is TMS320F2407.
Described Hall voltage sensor selects for use Japanese HINODE electric corporation to produce, and model is HFP2-001.
Described SCR rectification circuit is selected band paralleing reactor double reverse-stars type type SCR rectification circuit for use, and wherein, it is the TM150SA-6 that MIT produces that controllable silicon adopts model.
Described Hall current sensor selects for use Japanese HINODE electric corporation to produce, and model is HAS1-300.
Described signal conditioning circuit, the detection of grid voltage fluctuation signal, signal conditioning circuit output signal supplied with digital signal processor is handled the SCR rectification circuit that links to each other with the power transformer output by photoelectric isolating circuit control with computing output start pulse signal through signal.
Described Hall voltage sensor, the external characteristics of detection electric arc spraying voltage supplied with digital signal processor FEEDBACK CONTROL spraying source.
Described Hall voltage sensor, detect System for Electric Arc Spraying Current supplied with digital signal processor, thereby improve the stability of spraying current through the pulse signal that signal is handled and the computing output pulse width is adjustable by the wire feed rate of photoelectric isolating circuit control H bridge wire feeding circuit.
The model that American ATMEL is produced is AT89C52 Single-chip Controlling LCD and keyboard, the setting of electric arc spraying parameter is by keyboard input, liquid crystal display, and digital signal processor obtains the value of setting of electric arc spraying parameter by SCI serial port on the sheet and single chip communication swap data.
Claims (5)
1. digital control system of electrical arc spraying power source, comprise: power transformer, SCR rectification circuit, Hall current sensor, the Hall voltage sensor, two photoelectric isolating circuits, single-chip microcomputer, it is characterized in that, also comprise: digital signal processor, signal conditioning circuit, H bridge wire feeding circuit, signal conditioning circuit output signal supplied with digital signal processor, digital signal processor is handled by signal and computing output start pulse signal, start pulse signal input photoelectric isolating circuit, the SCR rectification circuit that the control of photoelectric isolating circuit output signal links to each other with the power transformer output, digital signal processor output signal input photoelectric isolating circuit, the H bridge wire feeding circuit of photoelectric isolating circuit output signal control electric arc spraying, System for Electric Arc Spraying Current and voltage detect through Hall current sensor and Hall voltage sensor respectively, Hall current sensor and Hall voltage sensor detection signal supplied with digital signal processor, FEEDBACK CONTROL is carried out in signal processing by digital signal processor, and serial port of single chip computer is connected with the digital signal processor serial port carries out bidirectional data communication.
2. digital control system of electrical arc spraying power source according to claim 1, it is characterized in that, described signal conditioning circuit, the detection of grid voltage fluctuation signal, signal conditioning circuit output signal supplied with digital signal processor is handled the SCR rectification circuit that links to each other with the power transformer output by photoelectric isolating circuit control with computing output start pulse signal through signal.
3. digital control system of electrical arc spraying power source according to claim 1 is characterized in that, described Hall voltage sensor, the external characteristics of detection electric arc spraying voltage supplied with digital signal processor FEEDBACK CONTROL spraying source.
4. digital control system of electrical arc spraying power source according to claim 3, it is characterized in that, described Hall voltage sensor, detect System for Electric Arc Spraying Current supplied with digital signal processor, thereby improve the stability of spraying current through the pulse signal that signal is handled and the computing output pulse width is adjustable by the wire feed rate of photoelectric isolating circuit control H bridge wire feeding circuit.
5. digital control system of electrical arc spraying power source according to claim 1, it is characterized in that, described single-chip microcomputer, control LCD and keyboard, the setting of electric arc spraying parameter is by keyboard input, liquid crystal display, and digital signal processor obtains the value of setting of electric arc spraying parameter by serial port and single chip communication swap data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100279275A CN100387358C (en) | 2005-07-21 | 2005-07-21 | Digital control system of electrical arc spraying power source |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100279275A CN100387358C (en) | 2005-07-21 | 2005-07-21 | Digital control system of electrical arc spraying power source |
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| CN1733366A CN1733366A (en) | 2006-02-15 |
| CN100387358C true CN100387358C (en) | 2008-05-14 |
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| CNB2005100279275A Expired - Fee Related CN100387358C (en) | 2005-07-21 | 2005-07-21 | Digital control system of electrical arc spraying power source |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102352476B (en) * | 2011-09-29 | 2013-08-21 | 北京工业大学 | Direct-current pulsed arc processing system and arc processing method |
| CN103256016B (en) * | 2013-05-08 | 2015-09-16 | 西安贯通能源科技有限公司 | For automatic wire feeding device and the automatic feeding method thereof of down-hole electric pulse operation |
| CN103614686B (en) * | 2013-11-17 | 2016-03-02 | 中国人民解放军装甲兵工程学院 | The method of intermetallic compound compound coating is prepared in heterogeneous mariages spraying and thermal treatment |
| CN104038071A (en) * | 2014-06-23 | 2014-09-10 | 苏州热工研究院有限公司 | Inverter type electric arc spraying power source based on phase-shifted full-bridge |
| CN109116790A (en) * | 2018-10-31 | 2019-01-01 | 徐波 | A kind of electric arc spraying electromechanical source integrated control system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4122327A (en) * | 1975-07-17 | 1978-10-24 | Metco Inc. | Automatic plasma flame spraying process and apparatus |
| US5296667A (en) * | 1990-08-31 | 1994-03-22 | Flame-Spray Industries, Inc. | High velocity electric-arc spray apparatus and method of forming materials |
| CN2176193Y (en) * | 1993-08-02 | 1994-09-07 | 刘成铭 | Multifunctional electric power for surface technique |
| CN1123715A (en) * | 1994-05-20 | 1996-06-05 | 米勒集团有限公司 | Method and apparatus for electric ARC spraying |
| CN1321549A (en) * | 1999-09-17 | 2001-11-14 | 诺德森公司 | Spray gun with data device and control method |
| US6369350B1 (en) * | 2001-05-30 | 2002-04-09 | Thermal Dynamics Corporation | Plasma-arc torch system with pilot re-attach circuit and method |
| CN1385273A (en) * | 2002-06-27 | 2002-12-18 | 上海交通大学 | Digital driving circuit for main circuit of silicon controlled welding machine |
| JP2003105521A (en) * | 2001-09-27 | 2003-04-09 | Daihen Corp | Method of detecting arc failure in electric arc thermal spraying |
-
2005
- 2005-07-21 CN CNB2005100279275A patent/CN100387358C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4122327A (en) * | 1975-07-17 | 1978-10-24 | Metco Inc. | Automatic plasma flame spraying process and apparatus |
| US5296667A (en) * | 1990-08-31 | 1994-03-22 | Flame-Spray Industries, Inc. | High velocity electric-arc spray apparatus and method of forming materials |
| CN2176193Y (en) * | 1993-08-02 | 1994-09-07 | 刘成铭 | Multifunctional electric power for surface technique |
| CN1123715A (en) * | 1994-05-20 | 1996-06-05 | 米勒集团有限公司 | Method and apparatus for electric ARC spraying |
| CN1321549A (en) * | 1999-09-17 | 2001-11-14 | 诺德森公司 | Spray gun with data device and control method |
| US6369350B1 (en) * | 2001-05-30 | 2002-04-09 | Thermal Dynamics Corporation | Plasma-arc torch system with pilot re-attach circuit and method |
| JP2003105521A (en) * | 2001-09-27 | 2003-04-09 | Daihen Corp | Method of detecting arc failure in electric arc thermal spraying |
| CN1385273A (en) * | 2002-06-27 | 2002-12-18 | 上海交通大学 | Digital driving circuit for main circuit of silicon controlled welding machine |
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| CN1733366A (en) | 2006-02-15 |
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