CN105511389B - A kind of lower programming Control loop for promoting programme-controlled dc power output response speed - Google Patents
A kind of lower programming Control loop for promoting programme-controlled dc power output response speed Download PDFInfo
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- CN105511389B CN105511389B CN201510888944.1A CN201510888944A CN105511389B CN 105511389 B CN105511389 B CN 105511389B CN 201510888944 A CN201510888944 A CN 201510888944A CN 105511389 B CN105511389 B CN 105511389B
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- 238000013519 translation Methods 0.000 claims abstract description 19
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- 230000005611 electricity Effects 0.000 claims description 11
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- 238000012360 testing method Methods 0.000 description 2
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25268—PLD programmable logic device
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
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Abstract
The invention discloses a kind of lower programming Control loops for promoting programme-controlled dc power output response speed.The lower programming Control loop that data acquisition and procession circuit, ADC translation circuits, cpu system, DAC translation circuits and lower programmed circuit form, programme-controlled dc power negative terminal increases negative bias voltage source, and lower programmed circuit is connected between programme-controlled dc power anode and bias voltage source negative terminal.The present invention is with cpu system and data acquisition and procession circuit, output voltage, electric current can be monitored in real time and descend program current accordingly, using Shunt negative feedback control circuit, realize the control to lower programmed circuit, due to that can keep lower program current constant in circuit always, the output voltage of programme-controlled dc power is enabled to rapidly drop to 0V, and the retention property when voltage is close to 0V, so as to promote the output response speed of programme-controlled dc power and performance.
Description
Technical field
The present invention relates to programme-controlled dc power field, under especially a kind of promotion programme-controlled dc power output response speed
Programming Control loop.
Background technology
Under underloading or idle condition, power supply output capacitor can slowly discharge programme-controlled dc power.If by program-controlled
DC power supply is that there is no problem completely as static electro potential source, but when carrying out the test under quick variation voltage, slowly
The velocity of discharge be equal to slow response speed and performance.This can undoubtedly give the response speed of programme-controlled dc power and performance band
Carry out totally unfavorable influence.The present invention relates to programmed circuits under a kind of programme-controlled dc power, have programmable lower program current
Ability carries out quick programmable discharge so that the output voltage of programme-controlled dc power can be rapidly dropped to power supply output capacitor
0V, so as to greatly promote the output response speed and performance of programme-controlled dc power.
At present, conventional lower programmed circuit schematic diagram is as shown in Figure 1, MOSFET power tubes V1 is bridged on the output.When
When output voltage is higher than programming value, lower programming control signal DP-CONTRL control operational amplifiers N1 output high level, MOSFET
Power tube V1 is just activated conducting and discharges to output equivalent capacitor C1, the lower program current range of MOSFET power tubes V1 from
10% to the 20% of source nominal output current.When the output voltage is low, maximum load during low pressure (VL) is restricted to
The conducting resistance R of MOSFET power tubesDSIn addition the detection resistance R1 of series connection, program current is restricted under maximum：VL/(RDS
+ R1), meanwhile, MOSFET power tubes are in depth saturation state, and dynamic adjustment capability significantly reduces.Therefore lower program current exists
It can be decreased obviously close to performance during 0V, can not realize programming Control under rapid large-current.
Although the output response speed and performance of programme-controlled dc power can be promoted using conventional lower programmed circuit, circuit letter
It is single, easy to implement, but lower program current can be decreased obviously in low pressure output particularly performance when close to 0V, lower program current energy
Power is greatly lowered, and influences output response speed and performance of the programme-controlled dc power when output voltage changes.
Invention content
In order to solve the deficiencies in the prior art, the present invention provides a kind of improved lower program current circuits, realize zero electricity
Programming Control under rapid large-current under the conditions of pressure effectively improves quick dynamic adjustment capability during low-voltage output, so as to fulfill
Response speed and performance under full voltage variation range.
In order to reach foregoing invention purpose, the present invention adopts the following technical scheme that：
A kind of lower programming Control loop for promoting programme-controlled dc power output response speed, including data acquisition and procession electricity
Road, ADC translation circuits, cpu system, DAC translation circuits and lower programmed circuit, the data acquisition and procession circuit, ADC transformation
The lower programming Control loop that circuit, cpu system, DAC translation circuits and lower programmed circuit form, the programme-controlled dc power negative terminal
Increase negative bias voltage source, lower programmed circuit is connected between programme-controlled dc power anode and bias voltage source negative terminal；
The data acquisition and procession circuit acquires output voltage, output current and the lower programming of programme-controlled dc power in real time
Electric current, collected signal carry out A/D conversions by ADC translation circuits, are re-fed into cpu system and are handled and export control letter
Number, control signal is sent to lower programmed circuit after carrying out D/A conversions by DAC translation circuits, and then controls lower programmed circuit so that
The output voltage of programme-controlled dc power can rapidly drop to 0V, and the retention property when voltage is close to 0V, so as to promote programmed direct
The output response speed and performance in galvanic electricity source.
Preferably, the lower programmed circuit includes integrated operational amplifier and power tube, the same phase of integrated operational amplifier
The lower programming Control voltage of input terminal input, the base stage of the output terminal connection power tube of integrated operational amplifier, the transmitting of power tube
Pole connects bias voltage source negative terminal, and the inverting input of the collector connection integrated operational amplifier of power tube forms feedback branch
Road, while the lower program current detection resistance of collector connection of power tube, lower program current detection resistance are exported by electric current and examined
Measuring resistance connects programme-controlled dc power anode, and programme-controlled dc power both ends are parallel with equivalent output capacitance；
The lower programming Control voltage is by the proportional integration amplification of integrated operational amplifier, the again middle power through power tube
Amplification and the feedback control of feedback branch, and then driving power pipe controls the lower program current of lower program current detection resistance
System so that equivalent output capacitance voltage can quickly adjust 0V.
Preferably, the data acquisition and procession circuit exports detection resistance by lower program current detection resistance, electric current
Output current, output voltage and the lower program current of acquisition programme-controlled dc power in real time.
Preferably, voltage magnitude is defeated less than integrated operational amplifier in-phase input end in the lower program current detection resistance
During the lower programming Control voltage magnitude entered, illustrate the lower lower program current for programming actual current and being less than setting, operational amplifier is defeated
Go out low level, power tube conducting, lower programming actual current continues to increase；Conversely, lower programming actual current tends to reduce, until under
It programs actual current and is equal to lower programming setting electric current, and then realize the PLC technology of lower program current.
Preferably, the power tube is combined by PNP type triode and NPN type triode, and wherein PNP type triode is
Middle power amplifier tube, NPN type triode are lower program current driving tube.
Preferably, negative feedback control electricity is parallel between the inverting input and output terminal of the integrated operational amplifier
Road.
Preferably, the output terminal of the programme-controlled dc power is also associated with gradual pulsactor, gradual pulsactor
For inhibiting the dash current of power tube turn-on transients, and avoid gradual pulsactor from current state when satisfy
And phenomenon.
Use as above technical solution obtain advantageous effects for：
1st, compared with routinely lower programmed circuit, the present invention can pull down and be output to 0V completely, and performance during close to 0V is not yet
It reduces, ensure that response speed and performance under gamut variation voltage.
2nd, with cpu system and data acquisition and procession circuit, output voltage, output current and corresponding can be monitored in real time
Lower program current.
3rd, output voltage can quickly be reduced using programmed circuit under symmetric parallel, obtains larger lower program current, make to put
The electric time can be reduced to Millisecond or even Microsecond grade.According to output power, more stages parallel connection also can be used.
4th, the proportional integration operation amplifier mode powered using positive and negative power supply, lower programming control signal is by single negative electricity
Voltage-controlled signal extension processed extends the control range of lower programming control signal, and effectively eliminate miscellaneous to positive and negative voltage control signal
Scattered signal influences.
5th, it after lower programmed circuit using the present invention, exports fall time and cutting edge aligned pass is substantially presented in output voltage
System.
Description of the drawings
Fig. 1 is conventional lower programmed circuit schematic diagram.
Fig. 2 is lower programming Control loop schematic diagram.
Fig. 3 is lower programmed circuit principle sketch.
Fig. 4 is lower programmed circuit structure diagram.
Specific embodiment
It is described further with reference to 2 to 4 pairs of specific embodiments of the invention of attached drawing：
A kind of lower programming Control loop for promoting programme-controlled dc power output response speed, including data acquisition and procession electricity
Road, ADC translation circuits, cpu system, DAC translation circuits and lower programmed circuit.As shown in Fig. 2, data acquisition and procession circuit,
The lower programming Control loop that ADC translation circuits, cpu system, DAC translation circuits and lower programmed circuit form, the program-controlled direct current
Power supply negative terminal increases negative bias voltage source, lower programmed circuit be connected to programme-controlled dc power anode and bias voltage source negative terminal it
Between.Data acquisition and procession circuit acquires output current, output voltage and the lower program current of programme-controlled dc power in real time, acquisition
The signal arrived carries out A/D conversions by ADC translation circuits, is re-fed into CPU processing systems and is handled and export control signal, controls
Signal processed is sent to lower programmed circuit after carrying out D/A conversions by DAC translation circuits, and then controls lower programmed circuit so that program-controlled
The output voltage of DC power supply can rapidly drop to 0V, and the retention property when voltage is close to 0V, so as to promote program-controlled direct current
The output response speed and performance in source.
As shown in figure 3, lower programmed circuit principle sketch, are examined by integrated operational amplifier N1, power tube V1, lower program current
Measuring resistance R2 and bias voltage source BT1 collectively form lower programmed circuit.Under the in-phase input end input of integrated operational amplifier N1
Programming Control voltage, the output terminal connection power tube V1 base stages of integrated operational amplifier, the emitter connection biased electrical of power tube
Potential source negative terminal, the inverting input of the collector connection integrated operational amplifier of power tube form feedback branch, the collection of power tube
Electrode is also connected with lower program current detection resistance, and lower program current detection resistance exports detection resistance by electric current and connects programmed direct
Power positive end is flowed, programme-controlled dc power both ends are parallel with equivalent output capacitance.
The proportional integration operation amplifier mode powered using positive and negative power supply is increased in the reverse input end of operational amplifier
Positive bias, lower programming control signal control signal extension to extend lower volume to positive and negative voltage control signal by single negative voltage
The control range of process control signal, and effectively eliminate spurious signal influence.
Lower programming Control voltage amplifies by the proportional integration of integrated operational amplifier, the middle power amplification through power tube again
With the feedback control of feedback branch, and then driving power pipe controls lower program current so that equivalent output capacitance voltage
0V can quickly be adjusted.Data acquisition and procession circuit exports detection resistance by lower program current detection resistance R2, electric current
R1 acquires output voltage, output current and the lower program current of programme-controlled dc power in real time.
Instantly it when voltage magnitude is less than lower programming Control voltage DP-CONTRL amplitudes on program current detection resistance R2, says
Bright lower program current is less than the lower program current of setting, operational amplifier N1 output low levels, and V1 is connected, and R2 electric currents continue to add
Greatly；Conversely, R2 electric currents tend to reduce, until R2 electric currents are equal to the lower program current of setting, and then realize lower program current can
Programming Control.Bias voltage source BT1 provides negative voltage bias, it can be achieved that drop-down exports completely, accordingly even when output voltage for V1
During close to 0V, lower program current is maintained to constant, reaches that program performance does not reduce at present close to 0V.Electricity is programmed below
Stream is gamut PLC technology, and function is equivalent to programmable electronic load, in this way can to power supply output capacitor into
Row Fast Programmable discharges, and improves response speed and performance of the programme-controlled dc power in the case where changing voltage.
Power tube is combined by PNP type triode and NPN type triode, and physical circuit is as shown in figure 4, lower programming Control
After voltage signal is by fuse F800, it is input to two in-phase input ends of operational amplifier N802A and N802B and its is right
After the two anti-phase input end signals answered carry out proportional integration operation amplifier respectively, driven by R212, R233 and R812, R833
Middle power amplifier tube V1205 and V1805, after bis- amplifications of middle power amplifier tube V1205 and V1805, under final driving
Program current power tube V1200 and V1800.Wherein N802 is low noise, low drifting, high gain operational amplifier.N802 is used
The proportional integration operation amplifier mode of positive and negative power supply power supply increases positive bias+10Vr in the reverse input end of operational amplifier ,+
10Vr is high precision, the voltage reference of low noise, and programming control signal is descended just to control signal extension by single negative voltage in this way
To positive and negative voltage control signal, the control range of lower programming control signal is extended, and effectively eliminates spurious signal influence.
Because the maximum terminal voltage Vbe between b, e pole of transistor is certain (about 0.7V), flow through R213,
The electric current of R221 and R813, R821 are also certain, so resistance R213, R221 and R813, R821 then play volitional check work(
The effect of rate pipe V1200, V1205 and V1800, V1805 collector currents.Resistance R214, R814 play negative feedback, a side
Face limits the gain amplification coefficient of Current amplifier loop, on the other hand plays effect of phase compensation, and Current amplifier loop is avoided to send out
Raw oscillatory occurences.
Capacitance C811 plays voltage jump protective effect, when output voltage mutation is excessively high, due to capacitance C811's
Rapid feedback is reduced rapidly by the lower lower program current of programming Control circuit, and then reaches the lower program current power of protection
The effect of pipe V1200, V1800.
And inductor L802, L803 etc. use the gradual pulsactor of high-precision V-arrangement magnetic core air gap technological design, not only
The dash current of lower program current power tube turn-on transients can effectively be inhibited, and ensure that inductor is unlikely in itself in high current
Occurs saturated phenomenon during state.
It see the table below by model machine circuit test data result.Maximum output voltage in the present invention is 100V, and maximum functional is electric
Flow 5A.Wherein, the 2nd row is not add in the programme-controlled dc power output voltage of lower programmed circuit to drop under the conditions of 0.1V in table
Export fall time；The 3rd row is that the programme-controlled dc power output voltage of the lower programmed circuit of the addition present invention is brought down completely in table
Output fall time under the conditions of 0V.
When not adding in from upper as can be seen that lower programmed circuit, output fall time longest is up to 34.04mS, and very
Difficulty discharges into 0V.After adding in the lower programmed circuit of the present invention, output fall time longest is only 4.52mS, and output fall time is only
/ 8th or so of lower programmed circuit are not added in；When close to 1V the and 2V voltages of 0V, output fall time, which reaches, almost may be used
With 0.1mS for ignoring or so, and 0V can be completely discharged to.Illustrate that circuit of the present invention has good lower programming quickly
Adjustment capability can ensure response speed and performance under gamut variation voltage, reach the design object of patent of the present invention.
Certainly, described above is only presently preferred embodiments of the present invention, should the present invention is not limited to enumerate above-described embodiment
When explanation, any those skilled in the art are all equivalent substitutes for being made, bright under the guidance of this specification
Aobvious variant, all falls within the essential scope of this specification, ought to be protected by the present invention.
Claims (7)
1. a kind of lower programming Control loop for promoting programme-controlled dc power output response speed, including data acquisition and procession electricity
Road, ADC translation circuits, cpu system, DAC translation circuits and lower programmed circuit, which is characterized in that the data acquisition and procession
The lower programming Control loop that circuit, ADC translation circuits, cpu system, DAC translation circuits and lower programmed circuit form, it is described program-controlled
DC power supply negative terminal increases bias voltage source, lower programmed circuit be connected to programme-controlled dc power anode and bias voltage source negative terminal it
Between；
The data acquisition and procession circuit acquires output voltage, output current and the lower programming electricity of programme-controlled dc power in real time
Stream, collected signal carry out A/D conversions by ADC translation circuits, are re-fed into cpu system and are handled and export control letter
Number, control signal is sent to lower programmed circuit after carrying out D/A conversions by DAC translation circuits, and then controls lower programmed circuit so that
The output voltage of programme-controlled dc power can rapidly drop to 0V, and the retention property when voltage is close to 0V, so as to promote programmed direct
The output response speed and performance in galvanic electricity source.
2. a kind of lower programming Control loop for promoting programme-controlled dc power output response speed according to claim 1,
It is characterized in that, the lower programmed circuit includes integrated operational amplifier and power tube, the in-phase input end of integrated operational amplifier
The lower programming Control voltage of input, the base stage of the output terminal connection power tube of integrated operational amplifier, the emitter connection of power tube
Bias voltage source negative terminal, the inverting input of the collector connection integrated operational amplifier of power tube form feedback branch, simultaneously
The collector of power tube is also connected with lower program current detection resistance, and lower program current detection resistance exports detection resistance by electric current
Programme-controlled dc power anode is connected, programme-controlled dc power both ends are parallel with equivalent output capacitance；
The lower programming Control voltage amplifies by the proportional integration of integrated operational amplifier, the middle power amplification through power tube again
With the feedback control of feedback branch, and then driving power pipe controls the lower program current of lower program current detection resistance,
Equivalent output capacitance voltage is enabled quickly to adjust 0V.
3. a kind of lower programming Control loop for promoting programme-controlled dc power output response speed according to claim 2,
It is characterized in that, the data acquisition and procession circuit is exported detection resistance and adopted in real time by lower program current detection resistance, electric current
Collect output current, output voltage and the lower program current of programme-controlled dc power.
4. a kind of lower programming Control loop for promoting programme-controlled dc power output response speed according to claim 2,
It is characterized in that, voltage magnitude is less than under the input of integrated operational amplifier in-phase input end in the lower program current detection resistance
During programming Control voltage magnitude, illustrate the lower lower program current for programming actual current and being less than setting, operational amplifier exports low electricity
Flat, power tube conducting, lower programming actual current continues to increase；Conversely, lower programming actual current tends to reduce, until lower programming is real
Border electric current is equal to lower programming setting electric current, and then realizes the PLC technology of lower program current.
5. a kind of lower programming Control loop for promoting programme-controlled dc power output response speed according to claim 2,
It is characterized in that, the power tube is combined by PNP type triode and NPN type triode, and wherein PNP type triode is middle power
Amplifier tube, NPN type triode are lower program current driving tube.
6. a kind of lower programming Control loop for promoting programme-controlled dc power output response speed according to claim 2,
It is characterized in that, negative feedback control circuit is parallel between the inverting input and output terminal of the integrated operational amplifier.
7. a kind of lower programming Control loop for promoting programme-controlled dc power output response speed according to claim 2,
It is characterized in that, the output terminal of the programme-controlled dc power is also associated with gradual pulsactor, and gradual pulsactor is used to press down
The dash current of power tube turn-on transients processed, and while avoiding gradual pulsactor from current state there is saturation and show
As.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510888944.1A CN105511389B (en) | 2015-12-02 | 2015-12-02 | A kind of lower programming Control loop for promoting programme-controlled dc power output response speed |
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| CN201510888944.1A CN105511389B (en) | 2015-12-02 | 2015-12-02 | A kind of lower programming Control loop for promoting programme-controlled dc power output response speed |
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| CN105511389A CN105511389A (en) | 2016-04-20 |
| CN105511389B true CN105511389B (en) | 2018-06-26 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201203812Y (en) * | 2008-01-08 | 2009-03-04 | 上海大学 | Adjustable constant-voltage constant-current power supply |
| CN203084592U (en) * | 2013-01-18 | 2013-07-24 | 福建利利普光电科技有限公司 | Circuit for improving stored program control direct-current power source load regulation |
| CN103973114A (en) * | 2014-05-06 | 2014-08-06 | 中国电子科技集团公司第四十一研究所 | Constant power control direct-current power supply |
| CN103973086A (en) * | 2014-05-06 | 2014-08-06 | 中国电子科技集团公司第四十一研究所 | Ripple wave suppressor circuit of program-controlled direct-current power supply |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6373017B2 (en) * | 2014-02-28 | 2018-08-15 | 株式会社Ｎｔｔファシリティーズ | DC power supply system, power supply device, power supply control method in DC power supply system, and program |
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2015
- 2015-12-02 CN CN201510888944.1A patent/CN105511389B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201203812Y (en) * | 2008-01-08 | 2009-03-04 | 上海大学 | Adjustable constant-voltage constant-current power supply |
| CN203084592U (en) * | 2013-01-18 | 2013-07-24 | 福建利利普光电科技有限公司 | Circuit for improving stored program control direct-current power source load regulation |
| CN103973114A (en) * | 2014-05-06 | 2014-08-06 | 中国电子科技集团公司第四十一研究所 | Constant power control direct-current power supply |
| CN103973086A (en) * | 2014-05-06 | 2014-08-06 | 中国电子科技集团公司第四十一研究所 | Ripple wave suppressor circuit of program-controlled direct-current power supply |
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