CN102970006A - Signal generation method for high-frequency narrow-pulse electrochemical machining power supply - Google Patents
Signal generation method for high-frequency narrow-pulse electrochemical machining power supply Download PDFInfo
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- CN102970006A CN102970006A CN2012105304979A CN201210530497A CN102970006A CN 102970006 A CN102970006 A CN 102970006A CN 2012105304979 A CN2012105304979 A CN 2012105304979A CN 201210530497 A CN201210530497 A CN 201210530497A CN 102970006 A CN102970006 A CN 102970006A
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Abstract
The invention discloses a signal generation method for a high-frequency narrow-pulse electrochemical machining power supply. The method comprises the following steps of: carrying out frequency and duty ratio digitalizing regulation, namely generating two phases of sine waves of 1Hz to 10MHz in a direct frequency synthesis manner by adopting DDS (Direct Digital Synthesis), acquiring square waves with the same frequency by using a high-speed comparator, counting clock pulses by using a CPLD (Complex Programmable Logic Device) and obtaining the square waves with 0% to 100% of the duty ratio as required; and 2) outputting waveforms, namely utilizing two sets of frequency and duty ratio regulating devices for generating high-frequency pulses and low-frequency pulses respectively to process two paths of signals, thereby obtaining five-type signals corresponding to five working modes of a direct-current power supply. The method provided by the invention can excellently satisfy requirements of a plurality of electrochemical machining modes such as removing, grinding and polishing of various metal materials during electrochemical machining.
Description
Technical field
The present invention relates to a kind of signal generating method, especially relate to a kind of signal generating method for high-frequency narrow-pulse Electrolyzed Processing power supply.
Background technology
Pulse ECM Process can be divided into sine wave or square wave by its machining voltage waveform, can according to frequency
Be divided into low frequency (tens of hertz), broad pulse (Millisecond) or high frequency (thousands of hertz ~ tens of KHz), burst pulse is (little
Second the level).Pulse ECM Process is to replace traditional direct current to power continuously this periodicity with the cyclical intermission power supply
The process of energising and outage has caused a series of variations of interelectrode gap process physics, chemical characteristic, and pulse
Frequency higher, this effect is stronger.
In existing Electrolyzed Processing, can not adapt to various different metal materials remove, grinding, polishing etc. be many
Plant the requirement of Electrolyzed Processing pattern.
Summary of the invention
The objective of the invention is: the defects for signal generating method in the existing Electrolyzed Processing provides a kind of signal generating method for high-frequency narrow-pulse Electrolyzed Processing power supply.
Technical scheme of the present invention is: be used for the signal generating method of high-frequency narrow-pulse Electrolyzed Processing power supply, may further comprise the steps:
(1) frequency, duty ratio digitlization are regulated: it is sinusoidal wave to utilize the direct frequency synthesis of DDS to produce two-phase 1Hz-10MHz; Utilize high-speed comparator to obtain the square wave of same frequency, described square wave is as the reference clock pulse of regulating frequency; Utilize CPLD that clock pulse is carried out the 0-99 counting, obtain as requested the square wave of 0% ~ 100% duty ratio.
(2) output waveform: utilize two cover frequencies, duty cycle adjustment device, a cover is used for producing high-frequency impulse, and is another set of for generation of low-frequency pulse; Two paths of signals is processed rear acquisition: high level, low level, high-frequency impulse, low-frequency pulse and 5 kinds of signals of pectination pulse, the corresponding DC power supply of difference: the output of Constant Direct Current power supply, 5 kinds of mode of operations that output is closed, high-frequency impulse is exported, low-frequency pulse is exported and the dressing pulse is exported.
As a further improvement on the present invention, change final output frequency by Single-chip Controlling DDS frequency synthesizer in the step (1), duty ratio is then exported to CPLD by single-chip microcomputer according to concrete numerical value and is realized that two design parameters are all realized Digital Control arbitrarily.
The present invention is used for the signal generating method of high-frequency narrow-pulse Electrolyzed Processing power supply, in Electrolyzed Processing, can adapt to well to various different metal materials remove, the requirement of the multiple Electrolyzed Processing patterns such as grinding, polishing.
Description of drawings
Fig. 1 is the oscilloscope sectional drawing of 1000Hz 50%;
Fig. 2 is work display interface sectional drawing;
Fig. 3 is the high-frequency impulse schematic diagram;
Fig. 4 is the low-frequency pulse schematic diagram;
Fig. 5 is pectination pulse schematic diagram.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
The present invention is used for the signal generating method of high-frequency narrow-pulse Electrolyzed Processing power supply, may further comprise the steps:
Frequency, duty ratio digitlization Principles of Regulation:
It is sinusoidal wave at first to utilize the direct frequency synthesis of DDS to produce 2 phase 1Hz-10MHz, utilize high-speed comparator obtain same frequency square wave, this square wave is as the reference clock pulse of making regulating frequency, utilize CPLD that clock pulse is carried out the 0-99 counting, can obtain as requested the square wave of 0% ~ 100% duty ratio.Change final output frequency by Single-chip Controlling DDS frequency synthesizer, any duty ratio is then exported to CPLD by single-chip microcomputer according to concrete numerical value and is realized.Two design parameters are all realized Digital Control.The specific implementation effect as shown in Figure 1, Fig. 2 is work display interface sectional drawing.
The output waveform principle:
Utilize two cover frequencies, duty cycle adjustment device, a cover is used for producing high-frequency impulse (Fig. 3), and is another set of for generation of low-frequency pulse (Fig. 4).
2 road signals are suitably processed, can obtain: high level, low level, high-frequency impulse, low-frequency pulse and 5 kinds of signals of pectination pulse (Fig. 5), the corresponding DC power supply of difference: the output of Constant Direct Current power supply, 5 kinds of mode of operations that output is closed, high-frequency impulse is exported, low-frequency pulse is exported and the dressing pulse is exported.In Electrolyzed Processing, can adapt to well to various different metal materials remove, the requirement of the multiple Electrolyzed Processing pattern such as grinding, polishing.
Claims (2)
1. be used for the signal generating method of high-frequency narrow-pulse Electrolyzed Processing power supply, may further comprise the steps:
(1) frequency, duty ratio digitlization are regulated: it is sinusoidal wave to utilize the direct frequency synthesis of DDS to produce two-phase 1Hz-10MHz; Utilize high-speed comparator to obtain the square wave of same frequency, described square wave is as the reference clock pulse of regulating frequency; Utilize CPLD that clock pulse is carried out the 0-99 counting, obtain as requested the square wave of 0% ~ 100% duty ratio;
(2) output waveform: utilize two cover frequencies, duty cycle adjustment device, a cover is used for producing high-frequency impulse, and is another set of for generation of low-frequency pulse; Two paths of signals is processed rear acquisition: high level, low level, high-frequency impulse, low-frequency pulse and 5 kinds of signals of pectination pulse, the corresponding DC power supply of difference: the output of Constant Direct Current power supply, 5 kinds of mode of operations that output is closed, high-frequency impulse is exported, low-frequency pulse is exported and the pectination pulse is exported.
2. the signal generating method for high-frequency narrow-pulse Electrolyzed Processing power supply according to claim 1, it is characterized in that: change final output frequency by Single-chip Controlling DDS frequency synthesizer in the step (1), duty ratio is then exported to CPLD by single-chip microcomputer according to concrete numerical value and is realized that two design parameters are all realized Digital Control arbitrarily.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105304979A CN102970006A (en) | 2012-12-11 | 2012-12-11 | Signal generation method for high-frequency narrow-pulse electrochemical machining power supply |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105304979A CN102970006A (en) | 2012-12-11 | 2012-12-11 | Signal generation method for high-frequency narrow-pulse electrochemical machining power supply |
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| CN102970006A true CN102970006A (en) | 2013-03-13 |
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| CN2012105304979A Pending CN102970006A (en) | 2012-12-11 | 2012-12-11 | Signal generation method for high-frequency narrow-pulse electrochemical machining power supply |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5952846A (en) * | 1997-08-08 | 1999-09-14 | Xilinx, Inc. | Method for reducing switching noise in a programmable logic device |
| CN2836339Y (en) * | 2005-11-02 | 2006-11-08 | 中国科学院沈阳自动化研究所 | Pulse generating device |
| CN101866156A (en) * | 2010-07-21 | 2010-10-20 | 中国地质大学（武汉） | LABVIEW-based variable frequency water treatment control system |
| CN102055438A (en) * | 2010-11-16 | 2011-05-11 | 北京航天测控技术开发公司 | High-speed square wave generating device and method |
| CN102468847A (en) * | 2010-11-03 | 2012-05-23 | 北京普源精电科技有限公司 | Square wave output method and device |
-
2012
- 2012-12-11 CN CN2012105304979A patent/CN102970006A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5952846A (en) * | 1997-08-08 | 1999-09-14 | Xilinx, Inc. | Method for reducing switching noise in a programmable logic device |
| CN2836339Y (en) * | 2005-11-02 | 2006-11-08 | 中国科学院沈阳自动化研究所 | Pulse generating device |
| CN101866156A (en) * | 2010-07-21 | 2010-10-20 | 中国地质大学（武汉） | LABVIEW-based variable frequency water treatment control system |
| CN102468847A (en) * | 2010-11-03 | 2012-05-23 | 北京普源精电科技有限公司 | Square wave output method and device |
| CN102055438A (en) * | 2010-11-16 | 2011-05-11 | 北京航天测控技术开发公司 | High-speed square wave generating device and method |
Non-Patent Citations (1)
| Title |
|---|
| 徐家文，云乃彰，王建业等: "《电化学加工技术：原理、工艺及应用》", 31 December 2008, 北京：国防工业出版社 * |
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Application publication date: 20130313 |