CN106597934A - Intelligent control method for optimizing permanent magnet contactor - Google Patents
Intelligent control method for optimizing permanent magnet contactor Download PDFInfo
- Publication number
- CN106597934A CN106597934A CN201611122287.0A CN201611122287A CN106597934A CN 106597934 A CN106597934 A CN 106597934A CN 201611122287 A CN201611122287 A CN 201611122287A CN 106597934 A CN106597934 A CN 106597934A
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- China
- Prior art keywords
- permanent magnet
- main circuit
- magnet contactor
- chip microcomputer
- contactor
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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
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Ac Motors In General (AREA)
- Relay Circuits (AREA)
Abstract
The invention discloses an intelligent control method for optimizing a permanent magnet contactor. The intelligent control method includes that when the permanent magnet contactor is closed, the main circuit switch is closed, and because the moving displacement of the iron core of the permanent magnet contactor is in mapping relation with the coil current, the real-time displacement of the iron core is obtained via a single-chip microcomputer after the coil current is detected, and the corresponding movable iron core moving speed can be obtained by means of the single-chip microcomputer processing; the real-time displacement of the movable iron core and the corresponding moving speed are set as the input of the fuzzy control, and the corresponding duty ratio output can be obtained via the single-chip microcomputer processing by means of the corresponding fuzzy control rule, considering that the output is a continuous function, the switch S1 of the main circuit cannot be directly controlled, the PWM output of the main circuit switch S1 can be controlled through the sampling of the single-chip microcomputer system at a certain time interval, therefore, the adjustment of the coil current through the main circuit can be realized, and the closed dynamic characteristic of the contactor can be improved.
Description
Technical field
The present invention relates to electric equipment and electrical engineering field, specifically, are related specifically to a kind of for optimizing permanent magnetism
The intelligent control method of contactor.
Background technology
The existing permanent magnet contactor dynamic characteristic that improves mainly has two big class, and a class is, based on various optimized algorithms, to carry out excellent
Change the body parameter of permanent magnet contactor, when having the disadvantage to close a floodgate, it is impossible to adjust the dynamic characteristic of permanent magnet contactor in real time；It is another kind of
Method is that, by applying good control method, such as existing segmentation PWM control technologies, weak magnetic control, these methods are most
Moving displacement unshakable in one's determination is moved when based on subjectivity artificially permanent magnet contactor is closed a floodgate to be segmented, and then applies corresponding control,
Subjective judgement is excessively relied on, and belongs to opened loop control, system robustness is not strong.
The content of the invention
It is an object of the invention to provide a kind of intelligent control method for optimizing permanent magnet contactor, by by dynamic iron core
Moving displacement and corresponding speed as fuzzy control input, dutycycle as fuzzy control output, this dutycycle
As the dutycycle that the PWM of main circuit is controlled, by the size for adjusting main circuit output current, so as to improve permanent magnet contactor
Dynamic characteristic, reaches the purpose of optimization.
Technical problem solved by the invention can employ the following technical solutions to realize：
A kind of intelligent control method for optimizing permanent magnet contactor, comprises the steps：
1) when permanent magnet contactor is closed, main circuit switch closure, due to permanent magnet contactor move moving displacement unshakable in one's determination with
Coil current has mapping relations, therefore can process the real-time position for obtaining dynamic iron core by Jing single-chip microcomputers after detection coil electric current
Move, and corresponding dynamic iron core translational speed can be obtained by single-chip microcomputer process；
2) dynamic real-time displacement unshakable in one's determination and corresponding translational speed are set as the input of fuzzy control, and by corresponding
Fuzzy control rule, via single-chip microcomputer process, obtains corresponding dutycycle output, it is contemplated that this is output as continuous function, it is impossible to
Directly control the switch S1 of main circuit, it is therefore desirable to by the sampling of the certain intervals time of SCM system, so as to be controlled
The PWM outputs of main circuit switch S1 processed, so as to realize the adjustment effect of the coil current passed through to main circuit, improve contactor
Closure dynamic characteristic；
3) after determining the dynamic iron core of permanent magnet contactor and completing closing course, main circuit switch S1 is disconnected；
4) operating voltage of permanent magnet contactor is main when permanent magnet contactor is in running order in 85%Un～110%Un
Circuit end of incoming cables adds a piezo-resistance, and when in overvoltage condition, the piezo-resistance is connected, and causes follow-up main circuit short
Connect, pass through without electricity, and have electricity sampling comparing element in subsequent conditioning circuit, the signal can be detected, and be sent in single-chip microcomputer, monolithic
Machine is reported to the police, and disconnects main circuit；When in decompression or it is under-voltage when, sampled comparing element, is sent in subsequent conditioning circuit
Single-chip microcomputer, single-chip microcomputer is reported to the police, and cuts off main circuit；
5) when permanent magnet contactor receives sub-gate signal, single-chip microcomputer sends sub-gate signal, and controls its separating brake switch S2
Closure, storage capacitor C realizes electric discharge, so as to realize weakening the magnetic field of permanent magnet contactor, realizes separating brake.
Compared with prior art, beneficial effects of the present invention are as follows：
1st, the dynamic making process of permanent magnet contactor is extremely complex, is related to electric field, magnetic field, temperature field, machinery dynamic
Mechanics etc. is various, and passing through fuzzy control can then avoid the modeling process of these complicated couplings.
2nd, when permanent magnet contactor is closed, Jing is often affected by phase angle and operating voltage is opened, and proposed by the present invention
Control method has very strong robustness, is not disturbed by these factors substantially, can effectively improve moving for permanent magnet contactor
Step response, reduces the spring number of times of contact.
Description of the drawings
Fig. 1 is the main circuit diagram for optimizing permanent magnet contactor of the present invention.
Fig. 2 is the control structure block diagram for optimizing permanent magnet contactor of the present invention.
Fig. 3 is the fuzzy domination structure block diagram for optimizing permanent magnet contactor of the present invention.
Specific embodiment
Technological means, creation characteristic, reached purpose and effect to make present invention realization is easy to understand, with reference to
Specific embodiment, is expanded on further the present invention.
A kind of intelligent control method for optimizing permanent magnet contactor of the present invention, comprises the steps：
I, when permanent magnet contactor is closed, main circuit switch closure, due to permanent magnet contactor move moving displacement unshakable in one's determination with
Coil current has certain relation, therefore can process the real-time of the dynamic iron core of acquisition by Jing single-chip microcomputers after detection coil electric current
Displacement.And corresponding dynamic iron core translational speed can be obtained by single-chip microcomputer process.Main circuit diagram refers to Fig. 1.
II, the input that dynamic real-time displacement unshakable in one's determination and corresponding translational speed are set as fuzzy control, and by corresponding
Fuzzy control rule, via single-chip microcomputer process, obtain the output of corresponding dutycycle, it is contemplated that this is output as continuous function, nothing
Method directly controls the switch S1 of main circuit, it is therefore desirable to by the sampling of the certain intervals time of SCM system (during the sampling
Between for output PWM cycle T), so as to obtain control main circuit switch S1 PWM output, so as to realize what main circuit was passed through
The adjustment effect of coil current, improves the closure dynamic characteristic of contactor.Control structure block diagram refers to Fig. 2, fuzzy domination structure
Block diagram refers to Fig. 3.
III, after determining the dynamic iron core of permanent magnet contactor and completing closing course, disconnect main circuit switch S1.
IVth, relevant regulations, the operating voltage of permanent magnet contactor is in 85%Un～110%Un.When permanent magnet contactor is in work
When making state, main circuit end of incoming cables adds a piezo-resistance, and when in overvoltage condition, the piezo-resistance is connected, and causes follow-up
Main circuit be shorted, pass through without electricity, and have electricity sampling comparing element in subsequent conditioning circuit, the signal can be detected, and send
In single-chip microcomputer, single-chip microcomputer is reported to the police, and disconnects main circuit；When in decompression or it is under-voltage when, the sampled ratio in subsequent conditioning circuit
Compared with link, single-chip microcomputer is sent in, single-chip microcomputer is reported to the police, and cuts off main circuit.
Vth, when permanent magnet contactor receives sub-gate signal, single-chip microcomputer sends sub-gate signal, and controls its separating brake switch S2
Closure, storage capacitor C realizes electric discharge, so as to realize weakening the magnetic field of permanent magnet contactor, realizes separating brake.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel it should be appreciated that the present invention is not restricted to the described embodiments, the simply explanation described in above-described embodiment and specification this
The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes
Change and improvement is both fallen within scope of the claimed invention.The claimed scope of the invention by appending claims and its
Equivalent thereof.
Claims (1)
1. a kind of intelligent control method for optimizing permanent magnet contactor, it is characterised in that comprise the steps：
1) when permanent magnet contactor is closed, main circuit switch closure, because permanent magnet contactor moves moving displacement and coil unshakable in one's determination
Electric current has mapping relations, therefore can process the real-time displacement for obtaining dynamic iron core by Jing single-chip microcomputers after detection coil electric current,
And corresponding dynamic iron core translational speed can be obtained by single-chip microcomputer process；
2) dynamic real-time displacement unshakable in one's determination and corresponding translational speed are set as the input of fuzzy control, and by corresponding fuzzy
Control rule, via single-chip microcomputer process, obtains corresponding dutycycle output, it is contemplated that this is output as continuous function, it is impossible to directly
The switch S1 of control main circuit, it is therefore desirable to by the sampling of the certain intervals time of SCM system, so as to obtain control master
The PWM outputs of contactor S1, so as to realize the adjustment effect of the coil current passed through to main circuit, improve the closure of contactor
Dynamic characteristic；
3) after determining the dynamic iron core of permanent magnet contactor and completing closing course, main circuit switch S1 is disconnected；
4) operating voltage of permanent magnet contactor is in 85%Un～110%Un, when permanent magnet contactor is in running order, main circuit
End of incoming cables adds a piezo-resistance, and when in overvoltage condition, the piezo-resistance is connected, and causes follow-up main circuit to be shorted,
Pass through without electricity, and have electricity sampling comparing element in subsequent conditioning circuit, the signal can be detected, and be sent in single-chip microcomputer, single-chip microcomputer
Report to the police, and disconnect main circuit；When in decompression or it is under-voltage when, sampled comparing element, is sent in list in subsequent conditioning circuit
Piece machine, single-chip microcomputer is reported to the police, and cuts off main circuit；
5) when permanent magnet contactor receives sub-gate signal, single-chip microcomputer sends sub-gate signal, and controls its separating brake switch S2 closure,
Storage capacitor C realizes electric discharge, so as to realize weakening the magnetic field of permanent magnet contactor, realizes separating brake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611122287.0A CN106597934A (en) | 2016-12-08 | 2016-12-08 | Intelligent control method for optimizing permanent magnet contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611122287.0A CN106597934A (en) | 2016-12-08 | 2016-12-08 | Intelligent control method for optimizing permanent magnet contactor |
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| Publication Number | Publication Date |
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| CN106597934A true CN106597934A (en) | 2017-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611122287.0A Pending CN106597934A (en) | 2016-12-08 | 2016-12-08 | Intelligent control method for optimizing permanent magnet contactor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112017911A (en) * | 2019-05-30 | 2020-12-01 | 上海电机学院 | Intelligent control system of magnetic latching relay |
| CN114334546A (en) * | 2021-12-30 | 2022-04-12 | 福州大学 | Sensorless opening and closing displacement tracking control system and method for contactor |
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| CN101127282A (en) * | 2007-06-08 | 2008-02-20 | 西安交通大学 | Intelligent AC contactor control unit based on current-variable control |
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| CN101127282A (en) * | 2007-06-08 | 2008-02-20 | 西安交通大学 | Intelligent AC contactor control unit based on current-variable control |
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| CN102315043A (en) * | 2011-09-09 | 2012-01-11 | 福州大学 | Double-closed-loop feedback-control module |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112017911A (en) * | 2019-05-30 | 2020-12-01 | 上海电机学院 | Intelligent control system of magnetic latching relay |
| CN114334546A (en) * | 2021-12-30 | 2022-04-12 | 福州大学 | Sensorless opening and closing displacement tracking control system and method for contactor |
| CN114334546B (en) * | 2021-12-30 | 2023-05-05 | 福州大学 | Sensorless switching-on/off displacement tracking control system and method of contactor |
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