CN201004170Y - Single-chip control circuit in portable reverse conversion manual welder - Google Patents
Single-chip control circuit in portable reverse conversion manual welder Download PDFInfo
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- CN201004170Y CN201004170Y CN 200720067043 CN200720067043U CN201004170Y CN 201004170 Y CN201004170 Y CN 201004170Y CN 200720067043 CN200720067043 CN 200720067043 CN 200720067043 U CN200720067043 U CN 200720067043U CN 201004170 Y CN201004170 Y CN 201004170Y
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- circuit
- control circuit
- welding machine
- feedback sampling
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Abstract
The utility model relates to a portable single chip control circuit used in contravariant manual welding machine, comprising a power out circuit, a feedback sampling circuit, a compare control circuit, a PWM generating, driving circuit and a single chip. The power out circuit is connected with the feedback sampling circuit. One end of the compare control circuit is connected with the feedback sampling circuit through the single chip, while the other end is connected with the PWM generating and driving circuit. The beneficial effect of the utility model is that increases the precision, reliability and flexibility of the control loop of the contravariant manual welding machine; and is convenient for debugging and upgrading(which is achieved by overwriting the software in the same hardware).
Description
Technical field
The utility model relates to a kind of portable inverter manual welding machine, relates in particular to control circuit and feedback circuit in this welding machine.
Background technology
Along with the raising of people's living standard, just towards energy-efficient, volume is little for the portable inverter manual welding machine, lightweight direction fast development, and more and more be applied to five metals, and repairs profession is even in the family life.
The continuous development of inverter technology and electron device increasingly mature, the exploitation of contravariant welding machine has also obtained the development of advancing by leaps and bounds, main circuit structure from before be the main module that develops into now based on highly integrated driving and main power device with the thyristor; Reverse frequency develops into present hundreds of thousands Hz by several thousand original Hz.
But the control circuit of portable inverter manual welding machine and feedback circuit also adopt analogue technique in the prior art.
As seen from Figure 1: the control system in the conventional inversion welding machine is by simulation system passive or that active device is formed.The whole control system is as follows: the output parameter of welding machine (electric current or voltage) feeds back to control loop by the LEM module samples.The signal that feedback quantity and welding machine are given relatively outputs to pwm chip through the PI controller, and pwm signal drives the amplification back and triggers device for power switching (as IGBT/MOSFET), the turn-on and turn-off of coming the power controlling switching device through isolating.The analogue technique control system is because structure is simple relatively, and technology maturation has obtained people and adopted widely.But its maximum shortcoming is carry out complex process limited in one's ability, and component number is many, and the parameter of controller is by the parameter decision of discrete elements such as resistance, electric capacity, the debugging complexity of controller, very flexible.The parameter distribution of resistance, electric capacity influences the consistance of controller simultaneously, and the poor stability of parameter such as temperature drift also can influence the stability of controller.Therefore be necessary to carry out the Digital Study of inverter type welder.
Single-chip microcomputer is that the digital control circuit of process chip has obtained in other field using widely.How this technology being applied in the welding machine is the problem that the technician will solve.
Summary of the invention
The utility model technical issues that need to address have provided in a kind of portable inverter manual welding machine has single chip machine controlling circuit, is intended to solve the above problems.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
The utility model comprises: power output circuit, feedback sampling circuit, comparison control circuit, PWM produce and driving circuit; Also comprise a single-chip microcomputer; Power output circuit links to each other with feedback sampling circuit, and described comparison control circuit one end links to each other with feedback sampling circuit by single-chip microcomputer, and the other end of comparison control circuit produces with PWM and driving circuit links to each other.
Compared with prior art, the beneficial effects of the utility model are: precision, reliability and the dirigibility of control loop in the inverter type welder are improved; Be convenient to debugging and upgrading (same set of hardware can be realized by rewriting software).
Description of drawings
Fig. 1 is control circuit and the feedback circuit module map in the prior art welding machine;
Fig. 2 is the utility model module map;
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
As seen from Figure 2: the utility model comprises: power output circuit, feedback sampling circuit, comparison control circuit, PWM produce and driving circuit; Also comprise a single-chip microcomputer; Power output circuit links to each other with feedback sampling circuit, and described comparison control circuit one end links to each other with feedback sampling circuit by single-chip microcomputer, and the other end of comparison control circuit produces with PWM and driving circuit links to each other.
When output changes, the signal (electric current or voltage) that is produced by the welder power output circuit feeds back to control loop by LEM module (current signal) or Direct Sampling (voltage signal), through the relatively amplification of control loop, the feedback quantity of generation outputs to PWM generation and driving circuit through single-chip microcomputer and controller again.By changing its output pulse width, realize all multi-functional of welding machine, comprising: overvoltage/undervoltage, overcurrent, temperature control, slow startup, antiseized, low zero load etc.
Claims (1)
1. have single chip machine controlling circuit in a portable inverter manual welding machine, comprising: power output circuit, feedback sampling circuit, comparison control circuit, PWM produce and driving circuit; It is characterized in that: also comprise a single-chip microcomputer; Power output circuit links to each other with feedback sampling circuit, and described comparison control circuit one end links to each other with feedback sampling circuit by single-chip microcomputer, and the other end of comparison control circuit produces with PWM and driving circuit links to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720067043 CN201004170Y (en) | 2007-02-06 | 2007-02-06 | Single-chip control circuit in portable reverse conversion manual welder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720067043 CN201004170Y (en) | 2007-02-06 | 2007-02-06 | Single-chip control circuit in portable reverse conversion manual welder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201004170Y true CN201004170Y (en) | 2008-01-09 |
Family
ID=39039711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200720067043 Expired - Lifetime CN201004170Y (en) | 2007-02-06 | 2007-02-06 | Single-chip control circuit in portable reverse conversion manual welder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201004170Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103034152A (en) * | 2012-12-18 | 2013-04-10 | 航天长峰朝阳电源有限公司 | Signal in sequence sending sequential control technology |
| CN107617806A (en) * | 2016-07-15 | 2018-01-23 | 上海沪工焊接集团股份有限公司 | Welding machine control circuit |
-
2007
- 2007-02-06 CN CN 200720067043 patent/CN201004170Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103034152A (en) * | 2012-12-18 | 2013-04-10 | 航天长峰朝阳电源有限公司 | Signal in sequence sending sequential control technology |
| CN103034152B (en) * | 2012-12-18 | 2016-04-27 | 航天长峰朝阳电源有限公司 | A kind of signal order transmission timing control technology |
| CN107617806A (en) * | 2016-07-15 | 2018-01-23 | 上海沪工焊接集团股份有限公司 | Welding machine control circuit |
| CN107617806B (en) * | 2016-07-15 | 2020-08-04 | 上海沪工焊接集团股份有限公司 | Welding machine control circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI HUGONG WELDING GROUP CO., LTD. Free format text: FORMER NAME: SHANGHAI HUGONG ELECTRIC WEDLING MACHINE MANUFACTURING CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 201700 No. 7177 Pine Road, Qingpu District, Shanghai Patentee after: Shanghai Hugong Welding Group Co., Ltd. Address before: 201700 No. 7177 Pine Road, Qingpu District, Shanghai Patentee before: Shanghai Hugong Electric Wedling Machine Manufacturing Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080109 |
|
| CX01 | Expiry of patent term |