CN101551408A - Arbitrary waveform generation device of device ageing screening lathe - Google Patents
Arbitrary waveform generation device of device ageing screening lathe Download PDFInfo
- Publication number
- CN101551408A CN101551408A CNA2008100354180A CN200810035418A CN101551408A CN 101551408 A CN101551408 A CN 101551408A CN A2008100354180 A CNA2008100354180 A CN A2008100354180A CN 200810035418 A CN200810035418 A CN 200810035418A CN 101551408 A CN101551408 A CN 101551408A
- Authority
- CN
- China
- Prior art keywords
- resistance
- amplifier
- waveform generation
- arbitrary waveform
- dsp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Amplifiers (AREA)
Abstract
The invention discloses an arbitrary waveform generation device of a device ageing screening lathe, which comprises two DSP controllers, two optoelectronic couplers respectively connected with the two DSP controllers, two filters respectively connected with the two optoelectronic couplers, a differential amplifier connected with the two filters and a power amplifier connected with the differential amplifier, wherein the output end of the power amplifier is connected in series with a first resistor R0, the other end of the first resistor R0 is connected with the DSP controllers by an isolation amplifier and then grounded after being connected with a second resistor R1. As the phase positions of two paths of signals are opposite, the signals are doubled after being subtracted, and the digital noise or the white noise attached to the two paths of signals have same phase position and are mutually counteracted after being subtracted. The invention improves the signal purity, reduces the noise interference and has the advantages of high precision and low signal noise generation.
Description
Technical field
The present invention relates to a kind of optional waveform generator, relate in particular to a kind of arbitrary waveform generation device of device ageing screening lathe.
Technical background
Device ageing screening lathe is an Electronic Control production production run in enormous quantities, is used for various devices are carried out the equipment of burn-in screen.Use this equipment can improve the efficient of device aging screening, guarantee the quality of device aging screening.The various defectives of artificial screening have been avoided.
Device ageing screening lathe is examined under different temperatures the performance of device, needs the precision height, the various function signals of high purity.How to realize that the high precision of arbitrary function, low noise signal are problem demanding prompt solutions of the present invention.
Summary of the invention
The objective of the invention is to overcome the defective of prior art, and a kind of arbitrary waveform generation device of device ageing screening lathe is provided, it has high precision, the characteristics that noiselike signal takes place.
The technical scheme that realizes above-mentioned purpose is: arbitrary waveform generation device of device ageing screening lathe, wherein, comprise two dsp controllers, two photoelectrical couplers that link to each other with described two dsp controllers respectively, the two filter that links to each other with described two photoelectrical couplers respectively, the differential amplifier that links to each other with described two filter, the power amplifier that links to each other with differential amplifier, the output terminal of this power amplifier is in series with one first resistance R
0, this first resistance R
0The other end link to each other with dsp controller by an isolated amplifier, and with one second resistance R
1Ground connection after linking to each other, wherein:
It is identical that the two-way pulse duration frequency takes place described two dsp controllers simultaneously, width-modulation pulse SPWM+ and SPWM-that phase place is opposite;
It is identical that described two photoelectrical couplers carry out two-way pulsewidth, frequency that light-coupled isolation removes the high frequency composition with formation with two width-modulation pulse SPWM+ of dsp controller output and SPWM-, low frequency width-modulation pulse PWM+ and PWM-that phase place is opposite;
Described wave filter with the two-way pulse PWM+ of photoelectrical coupler output and PWM-carry out filtering with form the two-way amplitude, frequency is identical, arbitrary function simulating signal V+ and V-that phase place is opposite;
Described differential amplifier is exported to power amplifier after the signal V+ of two filter output and V-are amplified;
Described isolated amplifier is used for first resistance R
0After isolating amplification, the feedback signal of output feeds back to dsp controller.
Above-mentioned arbitrary waveform generation device of device ageing screening lathe, wherein, described wave filter is a bandpass filter.
Above-mentioned arbitrary waveform generation device of device ageing screening lathe, wherein, the output voltage V=K of described differential amplifier (V+-V-), K are enlargement factor.
Above-mentioned arbitrary waveform generation device of device ageing screening lathe, wherein, the output voltage V o=GV of described power amplifier, G is gain.
Above-mentioned arbitrary waveform generation device of device ageing screening lathe, wherein, the output voltage of described power amplifier is through first resistance R
0With second resistance R
1Decay first resistance R
0With second resistance R
1Between voltage be feedback signal Vf, this signal amplifies behind isolated amplifier, it is VA=gVf that isolated amplifier feeds back to the signal that DSP controls its device, g is an enlargement factor.
The invention has the beneficial effects as follows: the present invention subtracts each other the back signal and strengthen 1 times, and the digital noise or the white noise phase place that are attached on the two paths of signals is identical, cancel out each other after subtracting each other, and have improved spectral purity, have reduced noise owing to be that the two paths of signals phase place is opposite.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
See also Fig. 1, there is shown arbitrary waveform generation device of device ageing screening lathe of the present invention, comprise two dsp controllers 1, two photoelectrical couplers 2 that link to each other with two dsp controllers 1 respectively, the two filter 3 that links to each other with two photoelectrical couplers 2 respectively, the differential amplifier 4 that links to each other with two filter 3, the power amplifier 5 that links to each other with differential amplifier 4, the output terminal of this power amplifier 5 is in series with one first resistance R
0, this first resistance R
0The other end link to each other with dsp controller 1 by an isolated amplifier 6, and with one second resistance R
1Ground connection after linking to each other, wherein:
It is identical that the two-way pulse duration frequency takes place two dsp controllers 1 simultaneously, width-modulation pulse SPWM+ and SPWM-that phase place is opposite;
It is identical that two photoelectrical couplers 2 carry out two-way pulsewidth, frequency that light-coupled isolation removes the high frequency composition with formation with two width-modulation pulse SPWM+ of dsp controller 1 output and SPWM-, low frequency width-modulation pulse PWM+ and PWM-that phase place is opposite;
The output voltage V o=GV of power amplifier 5, G is gain, the output voltage of power amplifier 5 is through first resistance R
0With second resistance R
1Decay first resistance R
0With second resistance R
1Between voltage be feedback signal Vf, this signal amplifies behind isolated amplifier;
Isolated amplifier 6 is used for first resistance R
0After isolating amplification, the feedback signal of output feeds back to dsp controller 1, it is VA=gVf that isolated amplifier 6 feeds back to the signal that DSP controls its device, g is an enlargement factor, VA is through dsp controller 1 sampling, form the feedback signal that signal takes place, the signal of dsp controller has adopted feedforward arithmetic, and in the present embodiment, it is 2801 that dsp controller 1 adopts model.
Though through the present invention is described in conjunction with specific embodiments, for the skilled personage in present technique field, according to substituting of making of narration above, revise with variation will be conspicuous.Therefore, such substituting, in the spirit and scope that modifications and variations fall into attached claim the time, should be included among the present invention.
Claims (5)
1. arbitrary waveform generation device of device ageing screening lathe, it is characterized in that, comprise two dsp controllers, two photoelectrical couplers that link to each other with described two dsp controllers respectively, the two filter that links to each other with described two photoelectrical couplers respectively, the differential amplifier that links to each other with described two filter, the power amplifier that links to each other with differential amplifier, the output terminal of this power amplifier is in series with one first resistance R
0, this first resistance R
0The other end link to each other with dsp controller by an isolated amplifier, and with one second resistance R
1Ground connection after linking to each other, wherein:
It is identical that the two-way pulse duration frequency takes place described two dsp controllers simultaneously, width-modulation pulse SPWM+ and SPWM-that phase place is opposite;
It is identical that described two photoelectrical couplers carry out two-way pulsewidth, frequency that light-coupled isolation removes the high frequency composition with formation with two width-modulation pulse SPWM+ of dsp controller output and SPWM-, low frequency width-modulation pulse PWM+ and PWM-that phase place is opposite;
Described wave filter with the two-way pulse PWM+ of photoelectrical coupler output and PWM-carry out filtering with form the two-way amplitude, frequency is identical, arbitrary function simulating signal V+ and V-that phase place is opposite;
Described differential amplifier is exported to power amplifier after the signal V+ of two filter output and V-are amplified;
Described isolated amplifier is used for first resistance R
0After isolating amplification, the feedback signal of output feeds back to dsp controller.
2. arbitrary waveform generation device of device ageing screening lathe according to claim 1 is characterized in that, described wave filter is a bandpass filter.
3. arbitrary waveform generation device of device ageing screening lathe according to claim 1 is characterized in that, the output voltage V=K of described differential amplifier (V+-V-), K are enlargement factor.
4. according to claim 1 or 3 described arbitrary waveform generation device of device ageing screening lathe, it is characterized in that, the output voltage V o=GV of described power amplifier, G is gain.
5. arbitrary waveform generation device of device ageing screening lathe according to claim 1 is characterized in that the output voltage of described power amplifier is through first resistance R
0With second resistance R
1Decay first resistance R
0With second resistance R
1Between voltage be feedback signal Vf, this signal amplifies behind isolated amplifier, it is VA=gVf that isolated amplifier feeds back to the signal that DSP controls its device, g is an enlargement factor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100354180A CN101551408A (en) | 2008-03-31 | 2008-03-31 | Arbitrary waveform generation device of device ageing screening lathe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100354180A CN101551408A (en) | 2008-03-31 | 2008-03-31 | Arbitrary waveform generation device of device ageing screening lathe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101551408A true CN101551408A (en) | 2009-10-07 |
Family
ID=41155761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100354180A Pending CN101551408A (en) | 2008-03-31 | 2008-03-31 | Arbitrary waveform generation device of device ageing screening lathe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101551408A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101820219A (en) * | 2010-04-28 | 2010-09-01 | 石家庄国耀电子科技有限公司 | Intelligent high-frequency switching mode power supply with reliable output voltage |
| CN102111125A (en) * | 2009-12-28 | 2011-06-29 | 北京普源精电科技有限公司 | Signal generator with current output type amplifying unit |
| CN102445598A (en) * | 2010-09-30 | 2012-05-09 | 英飞凌科技股份有限公司 | Signal generation for spectral measurements |
| CN102645611A (en) * | 2011-02-22 | 2012-08-22 | 长裕欣业股份有限公司 | Detecting system and detecting method of optical coupling receiving element |
| CN103491485A (en) * | 2013-09-04 | 2014-01-01 | 国光电器股份有限公司 | Dual-voice-coil horn D-class digital amplification system and signal processing method thereof |
| CN103731108A (en) * | 2013-11-21 | 2014-04-16 | 成都市宏山科技有限公司 | Signal amplification circuit applicable to control circuit |
| CN108572285A (en) * | 2018-03-26 | 2018-09-25 | 北京航空航天大学 | A kind of high speed photo coupling screening technique based on low-frequency broadband noise |
-
2008
- 2008-03-31 CN CNA2008100354180A patent/CN101551408A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102111125A (en) * | 2009-12-28 | 2011-06-29 | 北京普源精电科技有限公司 | Signal generator with current output type amplifying unit |
| CN102111125B (en) * | 2009-12-28 | 2015-04-22 | 北京普源精电科技有限公司 | Signal generator with current output type amplifying unit |
| CN101820219A (en) * | 2010-04-28 | 2010-09-01 | 石家庄国耀电子科技有限公司 | Intelligent high-frequency switching mode power supply with reliable output voltage |
| CN101820219B (en) * | 2010-04-28 | 2012-09-05 | 石家庄国耀电子科技有限公司 | Intelligent high-frequency switching mode power supply with reliable output voltage |
| CN102445598A (en) * | 2010-09-30 | 2012-05-09 | 英飞凌科技股份有限公司 | Signal generation for spectral measurements |
| CN102445598B (en) * | 2010-09-30 | 2015-07-08 | 英飞凌科技股份有限公司 | Method, device and spectrum analyzer for signal of spectral measurements |
| CN102645611A (en) * | 2011-02-22 | 2012-08-22 | 长裕欣业股份有限公司 | Detecting system and detecting method of optical coupling receiving element |
| CN103491485A (en) * | 2013-09-04 | 2014-01-01 | 国光电器股份有限公司 | Dual-voice-coil horn D-class digital amplification system and signal processing method thereof |
| CN103731108A (en) * | 2013-11-21 | 2014-04-16 | 成都市宏山科技有限公司 | Signal amplification circuit applicable to control circuit |
| CN108572285A (en) * | 2018-03-26 | 2018-09-25 | 北京航空航天大学 | A kind of high speed photo coupling screening technique based on low-frequency broadband noise |
| CN108572285B (en) * | 2018-03-26 | 2019-12-31 | 北京航空航天大学 | High-speed optocoupler screening method based on low-frequency broadband noise |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101551408A (en) | Arbitrary waveform generation device of device ageing screening lathe | |
| CN100514071C (en) | Shunt circuit linearity insulating circuit apparatus | |
| CN103884895B (en) | A kind of multi-channel linear isolation circuit and its oscillograph | |
| CN101131334A (en) | High-frequency wideband amplification circuit used for piezoresistive dynamic pressure sensor | |
| CN201966889U (en) | Integrator for optimizing frequency response characteristic of intruding wave recording device of transformer substation | |
| CN201191299Y (en) | Arbitrary waveform generating apparatus for device aging screening cart | |
| CN102480280A (en) | Signal simulated arbitrary waveform generator | |
| CN106850055B (en) | A kind of wideband low noise analog front circuit for optical fiber hit detection system | |
| CN105842562A (en) | Device for testing immunity to common-mode conducted disturbance | |
| CN108732606A (en) | Place system before the parallel connection type fast current of digital current multiple tracks | |
| CN201583599U (en) | Capacitive equipment online monitoring standard signal generator | |
| CN104685331A (en) | Improved measurement amplifying circuit for piezoelectric sensor positioned in an internal combustion engine | |
| CN102323457A (en) | Application of programmable chopping gain amplifier to electric energy metering chip | |
| CN102420664B (en) | Simulation system of noise signal for carrier test of low-voltage power line | |
| CN205961072U (en) | Network filter that S type constructs around line knot | |
| CN208953917U (en) | It is a kind of configured with being applicable in the PWM output devices of interface more | |
| CN104682929A (en) | Pulse signal duty ratio measuring circuit | |
| CN104280679A (en) | High speed operation amplifier test circuit based on FLEX | |
| CN103487631B (en) | Modulation-demodulation type current sensor | |
| CN109164291B (en) | High-voltage direct-current non-isolated voltage sampling circuit | |
| CN203122375U (en) | Non-invasive blood pressure anti-interference circuit | |
| CN204347119U (en) | Electric battery insulating monitoring signal processing circuit | |
| CN100529675C (en) | Double passage differential anti-jamming current amplification circuit | |
| CN204457763U (en) | A kind of receiving circuit of three-component induction logging loop construction | |
| CN205792980U (en) | A kind of high-definition video signal transmission extender |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20091007 |