CN207877069U - A kind of elevator door-motor frequency-changing control system - Google Patents
A kind of elevator door-motor frequency-changing control system Download PDFInfo
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- CN207877069U CN207877069U CN201820052851.4U CN201820052851U CN207877069U CN 207877069 U CN207877069 U CN 207877069U CN 201820052851 U CN201820052851 U CN 201820052851U CN 207877069 U CN207877069 U CN 207877069U
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Abstract
The utility model is related to a kind of elevator door-motor frequency-changing control systems, are made of door machine time-sequence control module, open loop control module, V/F control modules and mode selection switch；The scheme being combined is controlled using the open loop control of threephase asynchronous machine and V/F, it is controlled using open loop in switch gate dynamic running process, it passes through the control to the parameter of electric machine, electric current and winding back emf, realize velocity close-loop control, adaptive load ability is strong, keeps the switch gate operation curve of rate smoothing；It is transferred to using V/F Speed open-loop controls in switch gate motor rotation blockage in place, does not need the parameter of electric machine and detection winding back emf, there is no unstable state is controlled when low speed or zero-speed, motor can allowed to continue stall operation, export switch gate retentivity.
Description
Technical field
The utility model is related to a kind of elevator door-motor frequency-changing control systems, belong to lift facility control technology field.
Background technology
Threephase asynchronous machine is because its control method is simple, at low cost, high reliability at this stage, on elevator door-motor
Also it is widely used.Its method for controlling frequency conversion is generally based on V/F Speed open-loop control algorithms, and the method, which has, wants motor
It asks low, need the advantages that parameter of electric machine, but due to Speed open-loop control, adaptive load ability is poor, when door machine guide rail is because different
When object causes resistance to change, switch gate operation curve can be caused to change, speed pause and transition in rhythm or melody sense occur, or switch gate occur not in place
Situation.Speed closed loop vector control method with encoder may be used in existing scheme, but because increasing encoder, and cost is higher；
Or the open-loop vector control method using encoderless, but it applies in general to the operation of motor high speed, in low speed or zero-speed,
Can be because of winding back emf detection difficult, and cause control effect bad, there is control unstable state, unsuitable door machine is this
There are the workplaces of switch gate motor rotation blockage.
Invention content
For the above technical problem, present applicant proposes a kind of elevator door-motor frequency-changing control systems.
The utility model is related to the elevator door-motor frequency-changing control system by door machine time-sequence control module（1）, open loop arrow
Measure control module（2）, V/F control modules（3）And mode selection switch（4）Composition；
The door machine time-sequence control module（1）, receive external door open command, instruction of closing the door, open the door in place, opening the door subtracts
Speed, door-closing in-place and shutdown reduce-speed sign, the frequency conversion speed that current door machine switch gate operation curve is exported according to these signals are believed
Signal S, frequency conversion speed signal F and direction signal D control open loop control mould respectively in place for number F, direction signal D and switch gate
Block（2）With V/F control modules（3）, make forward and reverse operation according to preset speed driving threephase asynchronous machine, driving door machine is realized
It opens the door and closes the door, signal S is used for control model selecting switch to switch gate in place（4）, selected when door machine is during switch gate
Open loop control module（2）Motor is controlled, when door machine is being opened the door in place or when door-closing in-place, signal S is selected switch gate in place
V/F control modules（3）Control motor；
The open loop control module（2）, receive frequency conversion speed signal F and direction signal D, in door machine switch gate dynamic
Implement velocity close-loop control in operational process, improves the adaptability to load variation, ensure to keep door in different loads
Machine switch gate speed of service curve is steady；
The V/F control modules（3）, receive frequency conversion speed signal F and direction signal D, enabling or pass detected in door machine
Door after signal, exports switch gate signal S in place, open loop control module in place（2）It is switched to V/F control modules（3）, adopt
With V/F Speed open-loop controls；
The mode selection switch（4）, according to switch gate, signal S selects open loop control module in place（2）It is controlled with V/F
Molding block（3）Control motor operation.
Description of the drawings
The system block diagram of Fig. 1 the application elevator door-motor frequency-changing control systems.
Specific implementation mode
The technical solution of the utility model is described further with reference to figure and specific embodiment.
The elevator door-motor frequency-changing control system is by door machine time-sequence control module（1）, open loop control module（2）, V/F control
Molding block（3）And mode selection switch（4）Composition；
The door machine time-sequence control module（1）, receive external door open command, instruction of closing the door, open the door in place, opening the door subtracts
Speed, door-closing in-place and shutdown reduce-speed sign, the frequency conversion speed that current door machine switch gate operation curve is exported according to these signals are believed
Signal S, frequency conversion speed signal F and direction signal D control open loop control mould respectively in place for number F, direction signal D and switch gate
Block（2）With V/F control modules（3）, make forward and reverse operation according to preset speed driving threephase asynchronous machine, driving door machine is realized
It opens the door and closes the door, signal S is used for control model selecting switch to switch gate in place（4）, selected when door machine is during switch gate
Open loop control module（2）Motor is controlled, when door machine is being opened the door in place or when door-closing in-place, signal S is selected switch gate in place
V/F control modules（3）Control motor；
The open loop control module（2）, receive frequency conversion speed signal F and direction signal D, in door machine switch gate dynamic
Implement velocity close-loop control in operational process, improves the adaptability to load variation, ensure to keep door in different loads
Machine switch gate speed of service curve is steady；
The V/F control modules（3）, receive frequency conversion speed signal F and direction signal D, enabling or pass detected in door machine
Door after signal, exports switch gate signal S in place, open loop control module in place（2）It is switched to V/F control modules（3）, adopt
With V/F Speed open-loop controls, the parameter of electric machine and detection winding back emf are not needed, control is unstable when low speed or zero-speed is not present
Determine situation, motor can be allowed to continue stall operation, export switch gate retentivity.
The mode selection switch（4）, according to switch gate, signal S selects open loop control module in place（2）It is controlled with V/F
Molding block（3）Control motor operation.
The elevator door-motor frequency-changing control system combines open loop control and V/F controls respective advantage, realizes
It is controlled with open loop in switch gate dynamic running process, plays the strong advantage of its adaptive load ability, keep switch gate speed
Even running；In door machine switch gate motor rotation blockage in place, V/F controls are switched to, playing it can continue in low speed or zero-speed
The advantages of stable operation.
The above is only the preferred embodiments of the present invention.It should be pointed out that for the ordinary skill of the art
Member for, without deviating from the technical principle of the utility model, several improvements and modifications can also be made, these improve and
Modification should also be considered as the scope of protection of the utility model.
Claims (1)
1. a kind of elevator door-motor frequency-changing control system, which is characterized in that the elevator door-motor frequency-changing control system is by door machine sequential
Control module（1）, open loop control module（2）, V/F control modules（3）And mode selection switch（4）Composition；
The door machine time-sequence control module（1）, receive external door open command, instruction of closing the door, open the door in place, open the door and slow down, close
Door exports the frequency conversion speed signal F of current door machine switch gate operation curve according to these signals in place with shutdown reduce-speed sign, side
To signal D and switch gate, signal S, frequency conversion speed signal F and direction signal D control open loop control module respectively in place（2）
With V/F control modules（3）, make forward and reverse operation according to preset speed driving threephase asynchronous machine, driving door machine, which is realized, opens the door
And shutdown, signal S is used for control model selecting switch to switch gate in place（4）, open loop is selected when door machine is during switch gate
Vector control module（2）Motor is controlled, when door machine is being opened the door in place or when door-closing in-place, signal S selects V/F controls to switch gate in place
Molding block（3）Control motor；
The open loop control module（2）, receive frequency conversion speed signal F and direction signal D, in door machine switch gate dynamic operation
Implement velocity close-loop control in the process, improve the adaptability to load variation, ensures to keep door machine to open in different loads
Shutdown speed of service curve is steady；
The V/F control modules（3）, receive frequency conversion speed signal F and direction signal D, detect that enabling or shutdown are arrived in door machine
After the signal of position, switch gate signal S in place is exported, open loop control module（2）It is switched to V/F control modules（3）, using V/
F Speed open-loop controls；
The mode selection switch（4）, according to switch gate, signal S selects open loop control module in place（2）Mould is controlled with V/F
Block（3）Control motor operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820052851.4U CN207877069U (en) | 2018-01-12 | 2018-01-12 | A kind of elevator door-motor frequency-changing control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820052851.4U CN207877069U (en) | 2018-01-12 | 2018-01-12 | A kind of elevator door-motor frequency-changing control system |
Publications (1)
| Publication Number | Publication Date |
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| CN207877069U true CN207877069U (en) | 2018-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820052851.4U Active CN207877069U (en) | 2018-01-12 | 2018-01-12 | A kind of elevator door-motor frequency-changing control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110538443A (en) * | 2019-08-09 | 2019-12-06 | 西交利物浦大学 | Table tennis training robot with visual identification function |
-
2018
- 2018-01-12 CN CN201820052851.4U patent/CN207877069U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110538443A (en) * | 2019-08-09 | 2019-12-06 | 西交利物浦大学 | Table tennis training robot with visual identification function |
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