CN201557040U - Intelligent voltage and current double-closed-loop control system - Google Patents
Intelligent voltage and current double-closed-loop control system Download PDFInfo
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- CN201557040U CN201557040U CN2009201807493U CN200920180749U CN201557040U CN 201557040 U CN201557040 U CN 201557040U CN 2009201807493 U CN2009201807493 U CN 2009201807493U CN 200920180749 U CN200920180749 U CN 200920180749U CN 201557040 U CN201557040 U CN 201557040U
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Abstract
The utility model relates to an intelligent voltage and current double-closed-loop control system which is used for closed-loop control of a pulse-width modulation high-precision switch power supply. The control system comprises an intelligent processing unit (1), a function setting circuit (2), a voltage/current control mode selecting circuit (3), a PI circuit (4), a voltage selecting/amplitude limiting circuit (5), a PID circuit (6), a pulse-width modulation circuit (7) and a forcibly power closing circuit (8). The intelligent voltage and current double-closed-loop control system can lead a power supply to conveniently and rapidly realize the conversion of constant current and constant voltage modes when in normal use.
Description
(1) technical field
The utility model relates to a kind of intelligent voltage current double closed-loop control system, is used for the closed-loop control of pulse-width modulation type high accuracy Switching Power Supply.
(2) background technology
At present, the control mode of Switching Power Supply mainly contains various control patterns such as constant voltage control, constant current control, permanent power control, but these control models all can not be carried out the conversion of constant voltage, constant current control model fast, easily in the implementation of power supply.
(3) summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of intelligent voltage current double closed-loop control system that can carry out constant voltage, constant current mode conversion fast is provided.
The purpose of this utility model is achieved in that a kind of intelligent voltage current double closed-loop control system, includes intelligent processing unit, function setting circuit, voltage/current control model selection circuit, PI circuit, voltage selection/amplitude limiter circuit, PID circuit, pulse-width modulation circuit and power supply positive closing circuit; The input of described intelligent processing unit links to each other with the function setting circuit, the output of described intelligent processing unit selects circuit to link to each other with the voltage/current control model, the control end of described intelligent processing unit links to each other with power supply positive closing circuit, described power supply positive closing circuit links to each other with pulse-width modulation circuit, described voltage/current control model selects the selection output of circuit to be connected with voltage reference treatment circuit and current reference treatment circuit respectively, described benchmark treatment circuit links to each other with the input of PI circuit, the feedback signal input of described PI circuit is connected with a voltage feedback circuit, the output of described PI circuit links to each other with voltage selection/amplitude limiter circuit, the output of described current reference treatment circuit links to each other with voltage selection/amplitude limiter circuit, described voltage selection/limit circuit output end links to each other with the PID circuit, the output of described PID circuit links to each other with the signal input part of pulse-width modulation circuit, the feedback input end of described PID circuit is connected with an amplifying circuit, and the input of described amplifying circuit is connected with a current feedback circuit.
The course of work of the present utility model is:
The required operation information of intelligent processing unit is improved by the function setting circuit, and intelligent processing unit as calculated, analysis is back selects institute's value circuit to distribute to voltage reference treatment circuit and current reference treatment circuit through the voltage/current control model; As the voltage feedback circuit of interior closed loop the voltage feedback signal that collects is imported the PI circuit with the output signal of voltage reference treatment circuit and carry out computing, the PI circuit is with the output signal input voltage selection/amplitude limiter circuit of operation result with the current reference treatment circuit subsequently, the current reference treatment circuit is imported the PID circuit with signal processing results, meanwhile, by current feedback circuit the feedback current signal that collects after amplifying, amplifying circuit is delivered to the PID circuit as outer shroud, the PID circuit is imported pulse-width modulation circuit with operation result subsequently, and pulse-width modulation circuit can produce suitable pulse duration and come stabilized power supply output.
When breaking down or specific (special) requirements is arranged, intelligent processing unit can pass through the direct positive closing pulse-width modulation circuit of power supply positive closing circuit, thereby realizes closing whole Switching Power Supply.
The beneficial effects of the utility model are:
Owing to adopted two closed feedback loop, add the coordinated allocation effect of intelligent processing unit, make power supply under normal situation about using, also can realize the conversion of constant current, constant voltage mode easily and fast.
(4) description of drawings
Fig. 1 is the utility model structural representation.
Among the figure:
Intelligent processing unit 1, function setting circuit 2, voltage/current control model are selected circuit 3, voltage reference treatment circuit 31, current reference treatment circuit 32, PI circuit 4, voltage feedback circuit 41, voltage selection/amplitude limiter circuit 5, PID circuit 6, current feedback circuit 61, amplifying circuit 62, pulse-width modulation circuit 7, power supply positive closing circuit 8.
(5) embodiment
Referring to Fig. 1, the utility model relates to a kind of intelligent voltage current double closed-loop control system, and described control system includes intelligent processing unit 1, function setting circuit 2, voltage/current control model selection circuit 3, PI circuit 4, voltage selection/amplitude limiter circuit 5, PID circuit 6, pulse-width modulation circuit 7 and power supply positive closing circuit 8; The input of described intelligent processing unit 1 links to each other with function setting circuit 2, the output of described intelligent processing unit 1 selects circuit 3 to link to each other with the voltage/current control model, the control end of described intelligent processing unit 1 links to each other with power supply positive closing circuit 8, described power supply positive closing circuit 8 links to each other with pulse-width modulation circuit 7, described voltage/current control model is selected the selection output of circuit 3 to be connected with respectively and is pressed benchmark treatment circuit 31 and current reference treatment circuit 32, described benchmark treatment circuit 31 links to each other with the input of PI circuit 4, the feedback signal input of described PI circuit 4 is connected with a voltage feedback circuit 41, the output of described PI circuit 4 links to each other with voltage selection/amplitude limiter circuit 5, the output of described current reference treatment circuit 32 links to each other with voltage selection/amplitude limiter circuit 5, the output of described voltage selection/amplitude limiter circuit 5 links to each other with PID circuit 6, the output of described PID circuit 6 links to each other with the signal input part of pulse-width modulation circuit 7, the feedback input end of described PID circuit 6 is connected with an amplifying circuit 62, and the input of described amplifying circuit 62 is connected with a current feedback circuit 61.
Claims (1)
1. intelligent voltage current double closed-loop control system is characterized in that: described control system includes intelligent processing unit (1), function setting circuit (2), voltage/current control model and selects circuit (3), PI circuit (4), voltage selection/amplitude limiter circuit (5), PID circuit (6), pulse-width modulation circuit (7) and power supply positive closing circuit (8); The input of described intelligent processing unit (1) links to each other with function setting circuit (2), the output of described intelligent processing unit (1) selects circuit (3) to link to each other with the voltage/current control model, the control end of described intelligent processing unit (1) links to each other with power supply positive closing circuit (8), described power supply positive closing circuit (8) links to each other with pulse-width modulation circuit (7), described voltage/current control model is selected the selection output of circuit (3) to be connected with respectively and is pressed benchmark treatment circuit (31) and current reference treatment circuit (32), described benchmark treatment circuit (31) links to each other with the input of PI circuit (4), the feedback signal input of described PI circuit (4) is connected with a voltage feedback circuit (41), the output of described PI circuit (4) links to each other with voltage selection/amplitude limiter circuit (5), the output of described current reference treatment circuit (32) links to each other with voltage selection/amplitude limiter circuit (5), the output of described voltage selection/amplitude limiter circuit (5) links to each other with PID circuit (6), the output of described PID circuit (6) links to each other with the signal input part of pulse-width modulation circuit (7), the feedback input end of described PID circuit (6) is connected with an amplifying circuit (62), and the input of described amplifying circuit (62) is connected with a current feedback circuit (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201807493U CN201557040U (en) | 2009-11-24 | 2009-11-24 | Intelligent voltage and current double-closed-loop control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201807493U CN201557040U (en) | 2009-11-24 | 2009-11-24 | Intelligent voltage and current double-closed-loop control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201557040U true CN201557040U (en) | 2010-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201807493U Expired - Fee Related CN201557040U (en) | 2009-11-24 | 2009-11-24 | Intelligent voltage and current double-closed-loop control system |
Country Status (1)
| Country | Link |
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| CN (1) | CN201557040U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102866628A (en) * | 2011-07-05 | 2013-01-09 | 北京中科信电子装备有限公司 | Method for closed-loop control of power input |
-
2009
- 2009-11-24 CN CN2009201807493U patent/CN201557040U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102866628A (en) * | 2011-07-05 | 2013-01-09 | 北京中科信电子装备有限公司 | Method for closed-loop control of power input |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100818 Termination date: 20151124 |