CN101298715A - Digital accurate follow-up control method of rapier loom electric twisted edge - Google Patents
Digital accurate follow-up control method of rapier loom electric twisted edge Download PDFInfo
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- CN101298715A CN101298715A CNA2008100373340A CN200810037334A CN101298715A CN 101298715 A CN101298715 A CN 101298715A CN A2008100373340 A CNA2008100373340 A CN A2008100373340A CN 200810037334 A CN200810037334 A CN 200810037334A CN 101298715 A CN101298715 A CN 101298715A
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- selvage
- leno
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Abstract
The invention relates to a digital accurate tracking control method for electronic leno-selvage work of a rapier loom. The method comprises the following steps: signals from a coder driven by a main shaft of the loom are inputted to a leno-selvage controller to lead the leno-selvage controller to obtain the timely an angle signal of the loom shaft, and the leno-selvage controller sends out signals according to the actual angle of the loom shaft to control an actuating mechanism of the electronic leno-selvage to complete leno-selvage work. The digital delicate tracking control method enhances the control accuracy of leno-selvage, realizes the synchronization between the leno-selvage work and the loom shaft during either quick weaving or slow weaving and avoids the condition that the warp of leno-selvage is cut by rapier head or the abb cannot be locked normally.
Description
Technical field
The present invention relates to the digital accurate follow-up control method of rapier loom electric twisted edge, belong to textile machine control technology field.
Background technology
The strand limit great majority of Rapier looms in the market are machinery strand limit, have indivedual producers to try out electric twisted edge.So-called electric twisted edge is controlled leon-selvedge mechanism by digitlizations such as stepper motor or servomotor strand limit motor.But there is defective in the control of the existing electric twisted edge that obtains, the run duration on strand limit and dwell time are according to controlling near switching signal, the action that rotates and reverse that is to say strand limit motor all is instantaneous finishing when receiving near switching signal, rather than follows the servo-actuated of loom main shaft angle.When the crawl slow train, the unexpected snap action of leon-selvedge mechanism, in general a few tens of milliseconds just this time, loom main shaft may only move the distance in several years, but loom strand limit all shifts to an earlier date instantaneous having finished to the action of the strand limit in the circle scope, and this will make strand limit yarn not according to weaving process requirement campaign, such as closure just when the strand limit should not be closed, strand limit warp thread can be cut off by the sword head or can not normally pin weft yarn, causes substandard cloth or bad cloth.
Summary of the invention
The objective of the invention is to defective at the prior art existence, a kind of digital accurate follow-up control method of rapier loom electric twisted edge is provided, make the leon-selvedge mechanism of loom follow the loom main shaft motion by dynamic precision, improved the control accuracy on strand limit, make the action of loom strand limit all synchronous when express and slow train, avoid twisting the limit warp thread and can be cut off by the sword head or can not normally pin weft yarn with the action of loom main shaft.And the time of strand limit motion can be directly program control according to the angle of encoder, and need not go to the position of the nearly switch of transfer again.
For reaching above-mentioned requirements, design of the present invention is: the signal of the encoder of loom main shaft transmission output is input in the controller of strand limit, make strand limit controller can obtain the angle signal of loom main shaft in real time, utilize code device signal to obtain the main shaft angle of loom in real time, strand limit controller just can be controlled executing agency's servo-actuated of electric twisted edge according to the actual angle of loom main shaft like this, finishes strand limit function.
Concrete steps of the present invention are as follows: the first, and strand limit controller ceaselessly detects the signal of encoder, obtains the main shaft angle position of loom in real time.The second, whether the angle of judging encoder is in the operation angle on the strand limit of loom.The 3rd, as in movement angle, judge whether the angle of encoder changes.The 4th, as change, strand limit controller is just issued the electric twisted edge motor and is sent out several pulses, and control electric twisted edge motor is walked corresponding distance forward or backwards.
If operation angle or harness motion stroke change according to the kind of weaving cotton cloth certainly, then can realize by the operation step number and the speed of service of adjusting strand limit motor.Concrete movement angle as for electric twisted edge can be adjusted by program at any time according to the angle signal of encoder, and does not spend the position of manual adjustments near switch.The line number of precision of wherein following and encoder is relevant, and the line number of encoder is many more, and the precision of then following is high more.
The present invention compares with the prior art invention, and have following conspicuous outstanding substantive distinguishing features and remarkable advantage: the inventive method is because the signal antijamming capability of encoder is strong, and the stability of a system is good.Measure digitalization control method according to encoder, can conveniently regulate the angular range of electric twisted edge motion of mechanism.Can make leon-selvedge mechanism critically follow the main shaft servo-actuated, guarantee the uniformity of their actions, and too early execution not cause situations such as bad cloth and shutdown can not cause leon-selvedge mechanism because of crawl or slow train the time.
Description of drawings
Fig. 1 is a control system structural principle block diagram of the present invention.
Fig. 2 is a control method flow chart of the present invention.
The specific embodiment
Details are as follows in conjunction with the accompanying drawings for a preferred embodiment of the present invention:
Referring to Fig. 1 and Fig. 2, the digital accurate follow-up control method of this rapier loom electric twisted edge, by the output signal of the encoder 1 of loom main shaft transmission in strand limit controller 2, make strand limit controller 2 obtain the angle signal of loom main shaft in real time, strand limit controller 2 is according to the actual angle of loom main shaft, output signal is controlled executing agency's servo-actuated of electric twisted edge motor 3, finishes the strand edge work.Concrete job step is as follows:
Strand limit controller 2 ceaselessly detects the signal of encoder 1, obtains the main shaft angle position of loom in real time.The second, whether the angle of judging encoder 1 is in the operation angle on the strand limit of loom.The 3rd, as in movement angle, judge whether the angle of encoder 1 changes.The 4th, as change, strand limit controller 2 is just issued 3 several pulses of electric twisted edge motor, and control electric twisted edge motor is walked corresponding distance forward or backwards.
Claims (1)
1. the digital accurate follow-up control method of a rapier loom electric twisted edge, it is characterized in that output signal by the encoder (1) of loom main shaft transmission is in strand limit controller (2), make strand limit controller (2) obtain the angle signal of loom main shaft in real time, strand limit controller (2) is according to the actual angle of loom main shaft, output signal is controlled executing agency's servo-actuated of electric twisted edge motor (3), finish the strand edge work, concrete job step is as follows:
1. twist limit controller (2) and ceaselessly detect the signal of encoder (1), obtain the main shaft angle position of loom in real time.
Whether the angle of 2. judging encoder (1) is in the operation angle on the strand limit of loom.
3. as in movement angle, judge whether the angle of encoder (1) changes.
4. as changing, strand limit controller (2) is just issued electric twisted edge motor (3) and is sent out several pulses, and control electric twisted edge motor is walked corresponding distance forward or backwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100373340A CN101298715A (en) | 2008-05-13 | 2008-05-13 | Digital accurate follow-up control method of rapier loom electric twisted edge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100373340A CN101298715A (en) | 2008-05-13 | 2008-05-13 | Digital accurate follow-up control method of rapier loom electric twisted edge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101298715A true CN101298715A (en) | 2008-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100373340A Pending CN101298715A (en) | 2008-05-13 | 2008-05-13 | Digital accurate follow-up control method of rapier loom electric twisted edge |
Country Status (1)
| Country | Link |
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| CN (1) | CN101298715A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493106A (en) * | 2011-12-06 | 2012-06-13 | 浙江泰坦股份有限公司 | Alternating current servomotor control circuit for electronic planet selvage device |
| CN106192168A (en) * | 2016-08-29 | 2016-12-07 | 青岛天集团红旗纺织机械有限公司 | A kind of air-jet loom leon-selvedge mechanism assay device |
-
2008
- 2008-05-13 CN CNA2008100373340A patent/CN101298715A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493106A (en) * | 2011-12-06 | 2012-06-13 | 浙江泰坦股份有限公司 | Alternating current servomotor control circuit for electronic planet selvage device |
| CN106192168A (en) * | 2016-08-29 | 2016-12-07 | 青岛天集团红旗纺织机械有限公司 | A kind of air-jet loom leon-selvedge mechanism assay device |
| CN106192168B (en) * | 2016-08-29 | 2017-11-24 | 青岛天一集团红旗纺织机械有限公司 | A kind of air-jet loom leon-selvedge mechanism experimental rig |
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Open date: 20081105 |