CN105088450A - Digital leveling-control system of drawing frame - Google Patents
Digital leveling-control system of drawing frame Download PDFInfo
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- CN105088450A CN105088450A CN201510418036.6A CN201510418036A CN105088450A CN 105088450 A CN105088450 A CN 105088450A CN 201510418036 A CN201510418036 A CN 201510418036A CN 105088450 A CN105088450 A CN 105088450A
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- assay method
- homogeneous assay
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- sliver
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Abstract
The invention discloses a digital leveling-control system of a drawing frame, relating to the field of automatic control. The digital leveling-control system comprises an embossing roller (1) and drawing rollers (4). The embossing roller (1) is electrically connected with a displacement sensor (2) used for sensing thickness of cotton sliver. The displacement sensor (2) is electrically connected with a leveling controller (3). The leveling controller (3) is electrically connected with a servo motor controller and a speed sensor (6) used for sensing sliver-delivery speed. The leveling controller (3) is used for receiving signals of the displacement sensor (2) and the speed sensor (6) and outputting A-phase and B-phase orthogonal pulse signals by means of internally-embedded leveling algorithm. The servo motor controller is used for receiving an output signal of the leveling controller (3) and converting the output signal into speed and steering instruction signals and sending to a servo motor for controlling the drawing rollers (4). The digital leveling-control system of the drawing frame has following beneficial effects: without limitation of communication rate, the digital leveling-control system is low in cost; and problems including susceptibility of analog transfer to interference and zero draft are overcome.
Description
Technical field
The present invention relates to automation field, particularly a kind of drawing frame numeral Homogeneous assay method system.
Background technology
What require yarn quality along with market improves constantly, and the requirement of textile mills to Textile Machinery is also more and more higher, installs short autoleveller device exactly additional to the requirement of drawing frame.But the amalgamation of general low-grade drawing frame be insurmountable to long segment weight offset and short-movie section periodicity weight fluctuation, and drawing frame is irregular to sliver generation drawing-off.
Along with the development of domestic and international drawing frame self-regulating technology, the production efficiency of band autoleveller draw frame highlights, and this certainly will cause non-neat and well spaced drawing frame still to want to produce more high-quality cotton product just must carry out necessary transformation.Therefore the drawing frame autolevelling control system being suitable for these low-grade drawing frames uses is studied just necessary.
The mode that the mode of current most servomotor speed preset adopts analog voltage signal given, easily be interfered in the middle of analog signal transmittance process, the filter circuit of analog signal receiving terminal can only suppress interference, interference cannot be eliminated, the interfering signal that analog signal superposes must cause the fluctuation of servomotor, thus has influence on the even and orderly effect of output sliver.The fluctuation of analog signal along with power supply and the change of environment temperature, certainly exist the phenomenon of null offset, because sliver is all demarcate once the long period, the sliver quality of the inevitable shaping of zero drift changes, and has influence on the quality of shaping sliver.
Summary of the invention
Analog signal is used in order to solve prior art drawing frame control system, signal is vulnerable to disturb or produce null offset and affect the problem of output sliver even and orderly effect, the invention provides a kind of good stability, drawing frame numeral Homogeneous assay method system that accuracy is high.
Technical scheme of the present invention is:
A kind of drawing frame numeral Homogeneous assay method system, comprises embossing roller 1 and drawing rollers 4; Described embossing roller 1 is electrically connected with the displacement transducer 2 for responding to sliver thickness, and institute's displacement sensors 2 is electrically connected with Homogeneous assay method device 3, and described Homogeneous assay method device 3 is electrically connected servomotor controller and the velocity sensor 6 for responding to sliver exporting speed; The while of described Homogeneous assay method device 3, the signal of received bit displacement sensor 2 and velocity sensor 6 also exports A phase and B phase orthogonal pulses signal by the inner neat and well spaced algorithm be embedded with; Described servomotor controller receives the output signal of Homogeneous assay method device 3 and this output signal is converted to speed and steering command signals transfers to the servomotor controlling drawing rollers 4.
Preferably, described Homogeneous assay method device 3 connects host computer.
Further, described host computer comprises sensor calibration unit and parameter setting module.
Use described drawing frame numeral Homogeneous assay method system to carry out the method for Homogeneous assay method, comprise step:
1) feeding sliver thickness change makes embossing roller 1 produce displacement, embossing roller 1 drives displacement transducer 2 to produce the voltage signal with the proportional change of sliver thickness, voltage signal input Homogeneous assay method device 3, Homogeneous assay method device 3, by thicker for the voltage value that this voltage signal is corresponding with standard sliver thickness, draws the deviation of weight of feeding sliver;
2) Homogeneous assay method device 3 inbound pacing sensor 6 signal and be converted into sliver exporting speed;
3) Homogeneous assay method device 3 is according to the deviation of weight of feeding sliver and sliver exporting speed, and the neat and well spaced algorithm adopting its inside to be embedded with exports A phase and the B phase orthogonal pulses signal of difference 90 °;
4) the A phase of output and B phase orthogonal pulses signal are delivered to servomotor controller by Homogeneous assay method device 3, A phase and B phase orthogonal pulses signal are converted into speed and steering order and transfer to servomotor for controlling drawing rollers 4 by servomotor controller, thus change the drafting multiple of draw zone, obtain the sliver of weight uniformity.
Preferably, described servomotor controller judges the direction of rotation of servomotor according to the phase relation of A phase and B phase orthogonal pulses signal.
Further, if A road impulse waveform pi/2 more advanced than B road, servomotor rotates forward; If the delayed pi/2 in pulse ratio B road, A road, servomotor reverses.
In drawing frame of the present invention numeral Homogeneous assay method system, Homogeneous assay method device exports A phase and the B phase orthogonal pulses signal of difference 90 °, and servomotor controller receives this signal and is converted into speed and steering order is delivered to servomotor.The mode signal output of Homogeneous assay method device avoids to a great extent in analog signal transmission and is easily disturbed the shortcoming with null offset; Although adopt communication transfer also can overcome above shortcoming, communication transfer needs to increase special electrical level transferring chip, increases system cost.
Adopt the mode adjusting A, channel B dutycycle in the present invention, not only not by the restriction of communication speed, it also avoid the fringe cost using special chip to bring, also overcome analog quantity transmission simultaneously and be easily disturbed the problem with null offset.
Beneficial effect of the present invention is:
Drawing frame numeral Homogeneous assay method system of the present invention, not only not by the restriction of communication speed, it also avoid the fringe cost using special chip to bring, also overcomes analog quantity transmission simultaneously and be easily disturbed the problem with null offset.The control stability of drawing frame numeral Homogeneous assay method system of the present invention is good, the degree of accuracy is high.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of drawing frame of the present invention numeral Homogeneous assay method system;
Fig. 2 is the control signal figure of Homogeneous assay method device in drawing frame of the present invention numeral Homogeneous assay method system.
1-embossing roller; 2-displacement transducer; 3-Homogeneous assay method device; 4-drawing rollers; 5-servomotor controller and servomotor; 6-velocity sensor.
Detailed description of the invention
Embodiment 1
As shown in Figure 1 and Figure 2, a kind of drawing frame numeral Homogeneous assay method system, comprises embossing roller 1 and drawing rollers 4; Embossing roller 1 is electrically connected with the displacement transducer 2 for responding to sliver thickness, and displacement transducer 2 is electrically connected with Homogeneous assay method device 3, and Homogeneous assay method device 3 is electrically connected servomotor controller and the velocity sensor 6 for responding to sliver exporting speed; The while of Homogeneous assay method device 3, the signal of received bit displacement sensor 2 and velocity sensor 6 also exports A phase and B phase orthogonal pulses signal by the inner neat and well spaced algorithm be embedded with; Servomotor controller receives the output signal of Homogeneous assay method device 3 and this output signal is converted to speed and steering command signals transfers to the servomotor controlling drawing rollers 4.In Fig. 2,5 represent servomotor controller and servomotor.
Preferably, Homogeneous assay method device 3 connects host computer.Host computer comprises sensor calibration unit and parameter setting module.
Use drawing frame numeral Homogeneous assay method system to carry out the method for Homogeneous assay method, comprise step:
1) feeding sliver thickness change makes embossing roller 1 produce displacement, embossing roller 1 drives displacement transducer 2 to produce the voltage signal with the proportional change of sliver thickness, voltage signal input Homogeneous assay method device 3, Homogeneous assay method device 3, by thicker for the voltage value that this voltage signal is corresponding with standard sliver thickness, draws the deviation of weight of feeding sliver;
2) Homogeneous assay method device 3 inbound pacing sensor 6 signal and be converted into sliver exporting speed;
3) Homogeneous assay method device 3 is according to the deviation of weight of feeding sliver and sliver exporting speed, and the neat and well spaced algorithm adopting its inside to be embedded with exports A phase and the B phase orthogonal pulses signal of difference 90 °;
4) the A phase of output and B phase orthogonal pulses signal are delivered to servomotor controller by Homogeneous assay method device 3, A phase and B phase orthogonal pulses signal are converted into speed and steering order and transfer to servomotor for controlling drawing rollers 4 by servomotor controller, thus change the drafting multiple of draw zone, obtain the sliver of weight uniformity.
Wherein, servomotor controller judges the direction of rotation of servomotor according to the phase relation of A phase and B phase orthogonal pulses signal.If A road impulse waveform pi/2 more advanced than B road, servomotor rotates forward; If the delayed pi/2 in pulse ratio B road, A road, servomotor reverses.
Homogeneous assay method device 3 exports A phase and B phase orthogonal pulses signal, is similar to the mode of incremental encoder A, B phase.
The digital Homogeneous assay method device of the present embodiment can meet the needs spinning high-grade yarn, successively spins C14.6, multiple kind such as JC14.6, JT/C13.1, JC9.7, JC7.3, and result of use is remarkable, and yarn quality is higher.Drawing frame adopts digital Homogeneous assay method device of the present invention, shaping 1 meter, 3 meters, has larger improvement compared with the irregular and former controller of the weight of 5 meters.
The drawing frame of adapted the present invention numeral Homogeneous assay method system, effectively can reduce sliver heavy irregular, have good leveling role to drafting short-movie section, Uster sliver has clear improvement compared with adopting the controller of analog output mode, and yarn quality has and improves largely.
Claims (6)
1. a drawing frame numeral Homogeneous assay method system, is characterized in that: comprise embossing roller (1) and drawing rollers (4); Described embossing roller (1) is electrically connected with the displacement transducer (2) for responding to sliver thickness, institute's displacement sensors (2) is electrically connected with Homogeneous assay method device (3), described Homogeneous assay method device (3) electrical connection servomotor controller and the velocity sensor (6) for responding to sliver exporting speed; The while of described Homogeneous assay method device (3), the signal of received bit displacement sensor (2) and velocity sensor (6) also exports A phase and B phase orthogonal pulses signal by the inner neat and well spaced algorithm be embedded with; Described servomotor controller receives the output signal of Homogeneous assay method device (3) and this output signal is converted to speed and steering command signals transfers to the servomotor controlling drawing rollers (4).
2. drawing frame numeral Homogeneous assay method system as claimed in claim 1, is characterized in that: described Homogeneous assay method device (3) connects host computer.
3. drawing frame numeral Homogeneous assay method system as claimed in claim 2, is characterized in that: described host computer comprises sensor calibration unit and parameter setting module.
4. use drawing frame numeral Homogeneous assay method system described in claim 1 to carry out the method for Homogeneous assay method, it is characterized in that, comprise step:
1) feeding sliver thickness change makes embossing roller (1) produce displacement, embossing roller (1) drives displacement transducer (2) to produce the voltage signal with the proportional change of sliver thickness, voltage signal input Homogeneous assay method device (3), Homogeneous assay method device (3), by thicker for the voltage value that this voltage signal is corresponding with standard sliver thickness, draws the deviation of weight of feeding sliver;
2) Homogeneous assay method device (3) inbound pacing sensor (6) signal and be converted into sliver exporting speed;
3) Homogeneous assay method device (3) is according to the deviation of weight of feeding sliver and sliver exporting speed, and the neat and well spaced algorithm adopting its inside to be embedded with exports A phase and the B phase orthogonal pulses signal of difference 90 °;
4) the A phase of output and B phase orthogonal pulses signal are delivered to servomotor controller by Homogeneous assay method device (3), A phase and B phase orthogonal pulses signal are converted into speed and steering order and transfer to servomotor for controlling drawing rollers (4) by servomotor controller, thus change the drafting multiple of draw zone, obtain the sliver of weight uniformity.
5. leveling control method as claimed in claim 4, is characterized in that: described servomotor controller judges the direction of rotation of servomotor according to the phase relation of A phase and B phase orthogonal pulses signal.
6. leveling control method as claimed in claim 5, is characterized in that: if A road impulse waveform pi/2 more advanced than B road, and servomotor rotates forward; If the delayed pi/2 in pulse ratio B road, A road, servomotor reverses.
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| CN201510418036.6A CN105088450A (en) | 2015-07-16 | 2015-07-16 | Digital leveling-control system of drawing frame |
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| CN201510418036.6A CN105088450A (en) | 2015-07-16 | 2015-07-16 | Digital leveling-control system of drawing frame |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253763A (en) * | 2016-07-31 | 2016-12-21 | 上海新时达电气股份有限公司 | The filtering method of encoder and device |
| CN109763219A (en) * | 2019-03-29 | 2019-05-17 | 常州宏大智能装备产业发展研究院有限公司 | The independent neat and well spaced drawing frame of yarn |
| CN109825908A (en) * | 2019-03-29 | 2019-05-31 | 常州宏大智能装备产业发展研究院有限公司 | Yarn independence evereven and its autoleveller method |
| CN111441109A (en) * | 2020-05-14 | 2020-07-24 | 魏桥纺织股份有限公司 | Monitoring and leveling device and method for combing machine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253763A (en) * | 2016-07-31 | 2016-12-21 | 上海新时达电气股份有限公司 | The filtering method of encoder and device |
| CN106253763B (en) * | 2016-07-31 | 2019-03-29 | 上海新时达电气股份有限公司 | The filtering method and device of encoder |
| CN109763219A (en) * | 2019-03-29 | 2019-05-17 | 常州宏大智能装备产业发展研究院有限公司 | The independent neat and well spaced drawing frame of yarn |
| CN109825908A (en) * | 2019-03-29 | 2019-05-31 | 常州宏大智能装备产业发展研究院有限公司 | Yarn independence evereven and its autoleveller method |
| CN109825908B (en) * | 2019-03-29 | 2024-02-02 | 常州宏大智能装备产业发展研究院有限公司 | Independent autoleveling device and autoleveling method for fiber strips |
| CN109763219B (en) * | 2019-03-29 | 2024-05-10 | 常州宏大智能装备产业发展研究院有限公司 | Independent even drawing frame for whisker |
| CN111441109A (en) * | 2020-05-14 | 2020-07-24 | 魏桥纺织股份有限公司 | Monitoring and leveling device and method for combing machine |
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Application publication date: 20151125 |
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