CN103023325B - Low-power-consumptiocontrol control method and circuit - Google Patents
Low-power-consumptiocontrol control method and circuit Download PDFInfo
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- CN103023325B CN103023325B CN201210531913.7A CN201210531913A CN103023325B CN 103023325 B CN103023325 B CN 103023325B CN 201210531913 A CN201210531913 A CN 201210531913A CN 103023325 B CN103023325 B CN 103023325B
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Abstract
The invention discloses a kind of Low-power-consumptiocontrol control method for load, described load has continually varying operating state, comprises the following steps: utilize the transducer being installed on load to obtain the status signal V changed with load operating condition direct ratio
1; Utilization state signal V
1with reference signal V
2produce difference control signal V
3; By described difference control signal V
3the output signal V of control load is used for the superimposed rear generation of constant signal
out1+.Simultaneously, present invention also offers a kind of circuit corresponding with the method, adopt the present invention can provide continually varying control signal for the load of operating state continually varying, thus proof load has continuous print power stage, employing the present invention simultaneously comparatively prior art significantly reduces power loss, improves reliability.
Description
Technical field
The invention belongs to circuit design field, relating to a kind of Low-power-consumptiocontrol control method of the load for having consecutive variations operating state characteristic and the low power consumpting controling circuit for this load.
Background technology
Star sensor is the important attitude measurement parts in satellite control system, wherein comprises the probe circuit of star sensor, data processing circuit, refrigerator control circuit and secondary power supply circuit.The power supply of star sensor is input as primary power source bus, and the various secondary power supplies that its inside uses provide by the secondary power supply circuit being arranged on star sensor inside.
Star sensor refrigerator used has the cold controlling functions of unilateral system.According to the operating characteristic of refrigerator, when needs reduce temperature on a large scale, secondary power supply circuit is needed to provide the voltage of the highest 5V; When needs regulate temperature among a small circle, secondary power supply circuit is needed to provide the voltage being less than 5V.Therefore, refrigerator needs the continuously adjustable secondary power supply circuit of a kind of output for its power supply, and unexpected change can not occur supply power voltage, such as, be 0V (or 0V transition is 5V) from 5V transition, guarantee that cooling module can not be damaged due to the sudden change of voltage.
In addition, the valving that satellite propulsion system is used, the momenttum wheel etc. that satellite control system is used, all needs for it provides the voltage of continuous variable.
For the load of the above-mentioned type, the control circuit of prior art as shown in Figure 1.What this supply line adopted is the method for carrying out pressure regulation at secondary power supply circuit output end Series power MOSFET (or pliotron), cause there is larger power loss on MOSFET, while power deadweight loss, reduce the reliability of MOS device.
Summary of the invention
Technology of the present invention is dealt with problems and is: for the deficiencies in the prior art, provide a kind of Low-power-consumptiocontrol control method of the load for having consecutive variations operating state characteristic and the low power consumpting controling circuit for this load, adopt the present invention can provide continually varying control signal for the load of operating state continually varying, thus proof load has continuous print power stage, employing the present invention simultaneously comparatively prior art significantly reduces power loss, improves reliability.
Technical solution of the present invention is:
One aspect of the present invention provides a kind of Low-power-consumptiocontrol control method, comprises the following steps:
The transducer being installed on load is utilized to obtain the status signal V changed with load operating condition direct ratio
1;
Utilization state signal V
1with reference signal V
2produce difference control signal V
3;
By described difference control signal V
3the output signal V of control load is used for the superimposed rear generation of constant signal
out1+.
Further, in the above-mentioned methods, described load is refrigerating plant, and described transducer exports the status signal V corresponding with refrigerating plant working temperature state
1.
Further, in the above-mentioned methods, described status signal V
1with described reference signal V
2for voltage signal or current signal.
Further, in the above-mentioned methods, described difference control signal V
3by described status signal V
1with reference signal V
2superimposed acquisition.
Further, in the above-mentioned methods, described load is according to output signal V
out1+size variation produce the power stage of corresponding size variation.
The present invention provides a kind of low power consumpting controling circuit on the other hand, and this circuit comprises: export the status signal V changed with the operating state direct proportion of described load
1transducer, produce reference signal V
2reference cell. this circuit also comprises control unit and regulated power supply,
Described control unit is according to status signal V
1with reference signal V
2output difference dividing control signal V
3;
Described regulated power supply is by difference control signal V
3the output signal V of control load work is used for the superimposed rear generation of constant signal
out1+.
Further, in foregoing circuit, described load is refrigerating plant, the status signal v that described transducer exports
1change in direct ratio with refrigerating plant working temperature.
Further, in foregoing circuit, described control unit is PID controller.
Further, in foregoing circuit, described load is according to output signal V
out1+size variation produce the power stage of corresponding size variation.
Further, in foregoing circuit, described status signal V
1with described reference signal V
2for voltage signal or current signal.
The present invention compared with prior art tool has the following advantages:
1) supply voltage continuously adjustabe: as shown in Figure 1, on bus after electric-opening, power supply realizes DC/DC mapping function to the circuit of prior art, is transformed to the supply power voltage V that load needs by busbar voltage
out1+=5V, and provide voltage for transducer, benchmark and P adjuster; Transducer is arranged in load, measures and obtains the voltage signal V relevant to loaded work piece feature
1, this signal and reference voltage V
2compare in P adjuster inside, P adjuster carries out proportional control according to comparison signal; When this control signal is greater than 4V, make the complete conducting of MOSFET, the voltage in load is V
out1+; When this control signal is less than 2V, MOSFET is closed gradually, the voltage of now load is reduced to 0V from 5V gradually, and the drain source voltage of MOSFET is increased to 5V from 0V gradually; Electric power output voltage unanimously remains unchanged in the process.
As shown in Figure 3, on bus after electric-opening, regulated power supply realizes DC/DC mapping function in the present invention, busbar voltage is transformed to the supply power voltage V that load needs
out1+; Transducer is arranged in load, measures and obtains the voltage signal V relevant to loaded work piece feature
1, this signal and reference voltage V
2compare in PID adjuster inside, PID adjuster carries out PID control according to comparison signal, the positive output V of this control signal and regulated power supply
out1+carry out superposition and produce V
3signal also feeds back to regulated power supply, and regulated power supply controls its output voltage V according to this feedback signal
out1+; Work as V
1during consecutive variations, V
3produce consecutive variations in proportion, then regulated power supply output voltage V
out1+inverse proportion produces consecutive variations.
It is 2) low in energy consumption: the power loss on prior art MOSFET is,
Wherein, R
1oadfor the equivalent internal resistance of load.
Then,
From formula (1), the power loss of prior art on MOSFET has exceeded the used power consumption of load itself.
In the present invention, owing to not re-using MOSFET, then there is not corresponding power loss, and due to the reduction of power loss, improve the reliability adopting circuit after the present invention accordingly yet.
Accompanying drawing explanation
Fig. 1 is prior art circuits figure;
Fig. 2 is the inventive method flow chart;
Fig. 3 is circuit diagram of the present invention;
Embodiment
Just by reference to the accompanying drawings the present invention is described further below.
As shown in Figure 2, the method for the invention realizes the continuous control to load output power by following steps after loaded work piece:
1, the transducer being installed on load is utilized to obtain the status signal V changed with load operating condition direct ratio
1
After loaded work piece, its operating state changes along with the change of power output, the transducer be installed in load can by producing the corresponding signal of telecommunication to the induction of load operating condition, example is applied as with the one of the present invention on spacecraft refrigerator, the operating state of refrigerator is the working temperature of refrigerator, described transducer adopts thermistor, by the induction to refrigerator working temperature, can export the voltage signal that changes in proportion with working temperature as status signal V
1.Meanwhile, this status signal V
1also can for the current signal obtained by thermistor.
2, utilization state signal V
1with reference signal V
2produce difference control signal V
3
Reference signal V
2being a constant signal of telecommunication, can, for the voltage signal identical with the voltage signal that above-mentioned thermistor obtains, also can be current signal.
By by status signal V
1with reference signal V
2carry out calculus of differences and can obtain difference control signal V
3, this calculus of differences can be status signal V
1with reference signal V
2superposition.
3, by described difference control signal V
3the output signal V of control load is used for the superimposed rear generation of constant signal
out1+
Utilize the difference control signal V of above-mentioned acquisition
3the superimposed output signal V that just can obtain for control load work with constant signal further
out1+.Corresponding to above-mentioned refrigerator, this output signal V
out1+for the operating voltage signal of refrigerator, refrigerator produces the power stage of response change rule according to the size variation of operating voltage, and namely when operating voltage signal increases, then refrigerator increases power output; Otherwise when operating voltage reduces, then refrigerator reduces power output.Correspond to as output signal V
out1+current signal, refrigerator produces the power stage of same rule.
When the power output of load changes, there is corresponding change in the operating state of load, then transducer can obtain the status signal V after changing accordingly again
1, thus the continuously adjustabe to load output power can be realized, finally realize the stable output of bearing power.
As Fig. 3, it is circuit diagram of the present invention.This circuit comprises the load be connected with this control circuit, is installed on the transducer in load, reference cell, control unit and regulated power supply.
The load being connected to this circuit has consecutive variations operating state, as refrigerator, valving and momenttum wheel etc.
Transducer can by producing the corresponding signal of telecommunication and status signal V to the induction of load operating condition
1, this status signal V
1can be voltage signal or current signal.
Reference cell is for generation of reference signal V
2, this reference signal V
2with status signal V
1there is identical dimension.
The input of control unit receives above-mentioned status signal V respectively
1with reference signal V
2and to status signal V
1with reference signal V
2carry out calculus of differences and obtain difference control signal V
3, the embodiment of the present invention adopts PID controller as a kind of implementation of control unit, PID controller accepting state signal V
1with reference signal V
2, by by status signal V
1with reference signal V
2compare, thus produce a status signal V
1relative to reference signal V
2comparison signal as difference control signal V
3.
Regulated power supply is connected with control unit, and the difference control signal V that reception control unit produces
3.Have a constant voltage for exporting constant signal in regulated power supply inside, regulated power supply is by difference control signal V
3after superposing with constant signal, produce the output signal V being used for control load
out1+.
Load is receiving output signal V
out1+afterwards according to output signal V
out1+size produce the power stage of corresponding change.
In embodiments of the present invention, the load that can produce continuous duty change is not limited to refrigerator, can also provide power supply for valving and momenttum wheel etc.
By adopt the present invention comparatively prior art significantly reduce power loss, in prior art as shown in Figure 1, the maximum power loss on MOSFET is
exceed the maximum power dissipation that load itself is used
r
loadfor load resistance.
In the present invention, owing to not re-using MOSFET, then there is not corresponding power loss, and due to the reduction of power loss, improve the reliability adopting circuit after the present invention accordingly yet.
The unspecified part of the present invention belongs to general knowledge as well known to those skilled in the art.
Claims (2)
1., for a Low-power-consumptiocontrol control method for load, described load has continually varying operating state, it is characterized in that, comprises the following steps:
The transducer being installed on load is utilized to obtain the status signal V changed with load operating condition direct ratio
1;
Utilization state signal V
1with reference signal V
2produce difference control signal V
3;
By described difference control signal V
3the regulated power supply output voltage V of control load is used for the superimposed rear generation of constant signal
out1+;
Described load is refrigerating plant, and described transducer exports the status signal V corresponding with refrigerating plant working temperature state
1;
Described status signal V
1with described reference signal V
2for voltage signal or current signal;
Described difference control signal V
3by described status signal V
1with reference signal V
2superimposed acquisition;
Described load is according to regulated power supply output voltage V
out1+size variation produce the power stage of corresponding size variation.
2. for a low power consumpting controling circuit for load, for having the load of consecutive variations operating state, this circuit comprises: export the status signal V changed with the operating state direct proportion of described load
1transducer, produce reference signal V
2reference cell, it is characterized in that: this circuit also comprises control unit and regulated power supply,
Described control unit is according to status signal V
1with reference signal V
2output difference dividing control signal V
3;
Described regulated power supply is by difference control signal V
3the regulated power supply output voltage V of control load work is used for the superimposed rear generation of constant signal
out1+;
Described load is refrigerating plant, the status signal V that described transducer exports
1change in direct ratio with refrigerating plant working temperature;
Described control unit is PID controller;
Described load is according to regulated power supply output voltage V
out1+size variation produce the power stage of corresponding size variation;
Described status signal V
1with described reference signal V
2for voltage signal or current signal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210531913.7A CN103023325B (en) | 2012-12-06 | 2012-12-06 | Low-power-consumptiocontrol control method and circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210531913.7A CN103023325B (en) | 2012-12-06 | 2012-12-06 | Low-power-consumptiocontrol control method and circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103023325A CN103023325A (en) | 2013-04-03 |
| CN103023325B true CN103023325B (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210531913.7A Active CN103023325B (en) | 2012-12-06 | 2012-12-06 | Low-power-consumptiocontrol control method and circuit |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110701733B (en) * | 2019-10-11 | 2021-04-27 | 广东美的制冷设备有限公司 | Power supply circuit control method, power supply circuit and air conditioner |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4593258A (en) * | 1985-02-13 | 1986-06-03 | Gerald Block | Energy conserving apparatus for regulating temperature of monitored device |
| US5752385A (en) * | 1995-11-29 | 1998-05-19 | Litton Systems, Inc. | Electronic controller for linear cryogenic coolers |
| CN1489124A (en) * | 2002-08-27 | 2004-04-14 | ��ķ�ɷ�����˾ | Display device with temperature compensating function |
| CN101441502A (en) * | 2007-11-21 | 2009-05-27 | 英业达股份有限公司 | Apparatus and method for adjusting decompression change-over circuit working frequency by detection temperature |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1882997A1 (en) * | 2006-07-27 | 2008-01-30 | STMicroelectronics Limited | Battery charger with temperature-dependent power control |
-
2012
- 2012-12-06 CN CN201210531913.7A patent/CN103023325B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4593258A (en) * | 1985-02-13 | 1986-06-03 | Gerald Block | Energy conserving apparatus for regulating temperature of monitored device |
| US5752385A (en) * | 1995-11-29 | 1998-05-19 | Litton Systems, Inc. | Electronic controller for linear cryogenic coolers |
| CN1489124A (en) * | 2002-08-27 | 2004-04-14 | ��ķ�ɷ�����˾ | Display device with temperature compensating function |
| CN101441502A (en) * | 2007-11-21 | 2009-05-27 | 英业达股份有限公司 | Apparatus and method for adjusting decompression change-over circuit working frequency by detection temperature |
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| CN103023325A (en) | 2013-04-03 |
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