CN203451767U - Control system for variable density of full-automatic computerized flat knitting machine - Google Patents
Control system for variable density of full-automatic computerized flat knitting machine Download PDFInfo
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- CN203451767U CN203451767U CN201320286940.2U CN201320286940U CN203451767U CN 203451767 U CN203451767 U CN 203451767U CN 201320286940 U CN201320286940 U CN 201320286940U CN 203451767 U CN203451767 U CN 203451767U
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Abstract
The utility model discloses a control system for variable density of a full-automatic computerized flat knitting machine. The control system comprises man-machine inte4raction, an upper layer communication module, a processing module, an interface module and plurality of brushless direct current motors, wherein the brushless direct current motors are connected with a density triangle via a transmission mechanism. First, a position that the density triangle needs to reach is obtained; arrangement work of the processing data is finished via the upper layer communication module; a change value of the position of the density triangle is calculated and set; rotation laps and code change values of the brushless direct current motor corresponding to the change values of the position of the density triangle are also calculated and set; an order is transmitted to the processing module; the processing module outputs a PWM signal which is converted into a UVW three-phase signal via the interface module; the UVW three-phase signal controls the rotation of the brushless direct current motor; during the rotation of the brushless direct current motor, a motor encoder constantly returns code signals to the processing module; and when a change value of the received code signal by the processing module reaches a preset value, transmission of the PWM signal is stopped and the motor is locked, so the position of the density triangle is changed and fabric count is changed at last.
Description
Technical field
The utility model relates to Full-automatic computerized flat technical field, relates in particular to a kind of variable density control system of Full-automatic computerized flat.
Background technology
It is an important control that degree order is controlled in full-automatic computer flat braiding machine control system, the 3 pin machine series full-automatic computer flat braiding machines of take are example, it has 4 degree orders to control motor, it is by step motor control that traditional degree order is controlled, stepper motor is by transmission mechanism Connection Density triangle, transmission mechanism is: the output shaft of stepper motor is fixedly installed a gear, gear and tooth row engagement, tooth row is by bearing Connection Density triangle, braiding degree order in common every row is identical, in a line braiding, cannot change density.
In same drive mechanism, stepper motor is because rotating speed is low, and rotating torque is little, and easy step-out, low precision, so regulating density at the volley, the braiding degree order that can not realize in a braiding row with stepper motor is variable.Also have at present degree of variation object scheme abroad, but cost is high, nor can realizes regulating density between adjacent needles.
Utility model content
The utility model, for above-mentioned the deficiencies in the prior art, provides a kind of saving space, and precision is high, can realize the variable density control system that changes the Full-automatic computerized flat of density in a line braiding.
The technical solution of the utility model is achieved in that
A variable density control system for Full-automatic computerized flat, this system comprises:
Man-machine interaction, for showing motor status information and warning message;
Upper strata communication module, for sending control command and parameter setting, carries out data interaction with whole system;
Processing module, for receiving control command, according to configuration parameter data and motor encoder feedback output pwm signal;
Interface module, for converting pwm signal to UVW three-phase signal to brshless DC motor;
A plurality of brshless DC motors, by transmission mechanism Connection Density triangle, receive also Execution driven order to change fabric travel path and density.
As preferably, described processing module comprises Flash, amplifying circuit, dsp processor and FPGA; Dsp processor, is the processing center of processing module, for the communication on upper strata, the detection of feedback voltage, with the communication of FPAG, the input of the storage of data and motor encoder signal; FPGA, for the communication of man-machine interaction, the output of pwm signal; Flash, is the storage center of processing module, and the data of parameter are all kept in Flash; Amplifying circuit is for amplifying the voltage that interface module feeds back and the voltage amplifying being input to dsp processor.
As preferably, described interface module, comprises a plurality of SPM modules that are connected with brshless DC motor, the corresponding brshless DC motor of each SPM module, and SPM module is carried out for brshless DC motor in order to pwm signal is changed into UVW three-phase signal.
As preferably, the moment of torsion of brshless DC motor is greater than 0.5N.M, and rotating speed is greater than 3000 revs/min.Brshless DC motor rotating speed is fast, and the instant that can realize between adjacent two pins changes.
Adopted the principle of the present utility model of technique scheme and the advantage having to be:
The utility model is to drive each high-speed brushless DC electromotor ，Ge road, road high-speed brushless DC electromotor by transmission mechanism, to change the position of the density triangular of computer-controlled flat knitting machine by processing module and interface module, thereby changes the density of fabric.
The braiding degree order that density control system in the past can not be realized in a line is variable, adopts variable density control system of the present utility model, can realize change density in every braiding row one pin, thereby can accomplish complicated density control.The advantage that the utility model also has is: save space, precision is high, can not cause step-out, and speed is fast, when head moves, by brshless DC motor, changes density triangular position, can realize the unexpected variation between two adjacent pins.
Accompanying drawing explanation
Fig. 1 is the frame diagram of the utility model variable density control system in embodiment;
Fig. 2 is the work schematic diagram of processing module in the utility model variable density control system in embodiment;
Fig. 3 is the structural representation of transmission mechanism;
Fig. 4 is the Velocity-time graph of a relation of brshless DC motor motion.
The specific embodiment
The specific embodiment of the present utility model is as follows:
Embodiment: a kind of variable density control system of Full-automatic computerized flat, as shown in Figure 1, comprising:
Man-machine interaction is for showing motor status information and warning message;
Upper strata communication module, for generating Electric Machine Control order, arranges configuration parameter, obtains motor position and status information;
Processing module, be used for receiving Electric Machine Control order and configuration parameter, feedback motor position and status information, produce PWM (pulse width modulation) signal according to Electric Machine Control order, drive brshless DC motor, by IO mouth and man-computer interactive communication; Pwm signal is the driving signal of brshless DC motor.
Interface module, comprises 4 SPM modules, and the corresponding brshless DC motor of each SPM module, is converted to UVW three-phase signal to brshless DC motor for the pwm signal that processing module is produced; SPM module is for converting pwm signal to the module of UVW three-phase signal.
4 brshless DC motors represent with Moter respectively in Fig. 1, for driving tooth row and then driving density triangular to move, thereby change yarn track.
To forming each parts of variable density control system, do lower introduction in detail below:
Man-machine interaction, if be that warning message has overtemperature protection, short-circuit protection, overvoltage protection for showing motor status information spinner motor running speed; Overtemperature protection, due to overload or other severe conditions make device internal temperature too high, device will automatically stop output, brshless DC motor is out of service; Short-circuit protection, because wiring or other reasons cause motor winding suddenly-applied short circuit, driver detects and enters short-circuit protection state, cuts off all output; Overvoltage protection, the internal drive causing due to reasons such as fast direct is moving, voltage ripple of power network occurs that overpressure means enters guard mode, automatically stops output; Rotating speed shows, measures the revolution of brshless DC motor, and unit is rev/min.
Upper strata communication module, by 485 or CAN communication and processing module carry out data interaction, the data interaction here mainly refers to the parameters such as speed ring gain, the speed ring parameter time of integration, position loop gain, motor gear compare.
Processing module, as shown in Figure 2, communication module mutual data in upper strata are saved in Flash, the Voltage Feedback of interface module is linked in dsp processor by amplifying circuit, and No. 4 motor code signals are linked in dsp processor by level conversion, and dsp processor is by bus and FPGA communication, FPGA is field programmable gate array, FPGA drives man-machine interaction, and dsp processor is passed to FPGA data, and FPGA produces and output pwm signal.
Interface module, the pwm signal that receiving processing module sends over, converts thereof into UVW three-phase driving signal and drives 4 road high-speed brushless DC electromotors.
Brshless DC motor is by transmission mechanism Connection Density triangle, as shown in Figure 3, on the output shaft 2 of brshless DC motor 1, be fixedly connected with a gear 3, gear 3 and tooth row 4 engagements, when being rotated, gear 3 can drive tooth row 4 to move together, tooth row 4 moves up and down by bearing Connection Density triangle 5, thereby changes fabric travel path, finally reaches the object that changes Density.This transmission mechanism is prior art, and therefore not to repeat here.Just, in the past same drive mechanism, stepper motor is because rotating speed is low, and rotating torque is little, and easy step-out, low precision, so regulating density at the volley, the braiding degree order that can not realize in a braiding row with stepper motor is variable.
The method of work of control system of the present invention comprises the steps: the position of first knowing that density triangular will arrive, by upper strata communication module, deal with data setting is completed, calculate and set the changing value of density triangular position and the brshless DC motor corresponding with it and rotate the number of turns, code change value, then by command transfer to processing module, the order that processing module sends according to upper strata communication module and the Voltage Feedback of interface module, motor encoder signal feedback, output pwm signal, then processing module is passed to interface module pwm signal, interface module converts UVW three-phase signal to pwm signal, UVW three-phase signal is controlled brshless DC motor makes it rotate the corresponding number of turns, brshless DC motor moves density triangular by transmission mechanism, when brshless DC motor rotates, the continuous feedback encoding signal of motor encoder is to processing module, when the code signal changing value of receiving when processing module reaches setting value, stop sending pwm signal, lock out motor, thereby changed the position of density triangular, reach the object that changes Density.
To of the present utility model, specifically should give an example as following below:
The variable density control system of full-automatic computer flat braiding machine can realize every pin and change density on three pin machines, dual system 3 pin machines, there are 4 brshless DC motors of High Rotation Speed only, by these 4 brshless DC motors, change Density, by brshless DC motor, rotate, drive tooth row, the motion of tooth row has driven the motion of density triangular, density triangular up moves, the stroke of yarn shortens, thereby the density of fabric is diminished, and density triangular down moves, the stroke of yarn is elongated, thereby makes the density of fabric become large.
First obtain the position that density triangular will arrive, by upper strata communication module, deal with data setting is completed, calculate and set the changing value of density triangular position and the brshless DC motor corresponding with it and rotate the number of turns, code change value, then by command transfer to processing module, the order that processing module sends according to upper strata communication module and the Voltage Feedback of interface module, motor encoder signal feedback, output pwm signal, then processing module is passed to interface module pwm signal, interface module converts UVW three-phase signal to pwm signal, UVW three-phase signal is controlled brshless DC motor makes it rotate the corresponding number of turns, brshless DC motor moves density triangular by transmission mechanism, when brshless DC motor rotates, the continuous feedback encoding signal of motor encoder is to processing module, when the code signal changing value of receiving when processing module reaches setting value, stop sending pwm signal, lock out motor, thereby changed the position of density triangular, reach the object that changes Density.
The 60 inches of types of 3 pin machine of take are row, known needle-bar total length L is 60 inches, the quantity N of per inch pin is 3 pieces, braiding machine maximum speed V1 is 1.2 meter per seconds, the total kilometres d of density triangular is 600 steps, the position d1 of the density triangular of a upper pin is 200 steps, the Velocity-time graph of a relation of brshless DC motor motion as shown in Figure 4, brshless DC motor mean speed V2 is 2000 revs/min, the density triangular position d2 of next pin is 320 steps, motor positive direction is revolved and is turned around, the Pulse Nd that code signal increases is 1000, brshless DC motor revolves and turns around, density triangular is from 0 position of going to 600 steps.Head runs to next pin from a upper pin, and density triangular will run to from the position of 200 steps the position of 320 steps.
The distance B n=L/N=25.4/3=8.4mm of pin and pin; In full-automatic computer flat braiding machine maximum speed 1.2 meter per second situations, head operation moves the needed time T n=Dn/V1 of Dn from a upper pin to this segment distance of next pin; Be Tn=8.4x10
-3/ 1.2=0.007 second.
Upper strata communication module by 485 or CAN notice density triangular to go to the position of 320 steps, processing module receives after this order, send pwm signal to interface module, interface module converts UVW three-phase signal to pwm signal and drives brshless DC motor, motor rotation, thus code signal is changed.
Density triangular goes to 320, the number of turns Q=of the confidential rotation of brushless dc (d2-d1)/d from 200 now; Be Q=(320-200)/600=0.2.Code change value B=Q * Nd=0.2 * 1000=200.
When processing module, receive motor encoder and turn back to after 200 pulses, just stop sending out pwm signal, motor remains on lock-out state, and the position of density triangular has changed to the position of 320 steps from 200 steps, thereby makes Density become large.
Claims (4)
1. a variable density control system for Full-automatic computerized flat, is characterized in that this system comprises:
Man-machine interaction, for showing motor status information and warning message;
Upper strata communication module, for sending control command and parameter setting, carries out data interaction with whole system;
Processing module, connects respectively man-machine interaction and upper strata communication module, for receiving control command, according to configuration parameter data and motor encoder feedback output pwm signal;
Interface module, connects processing module, for pwm signal being converted to UVW three-phase signal to brshless DC motor;
A plurality of brshless DC motors, connection interface module, and by transmission mechanism Connection Density triangle, receive also Execution driven order to change fabric travel path and density.
2. the variable density control system of a kind of Full-automatic computerized flat according to claim 1, is characterized in that: described processing module comprises Flash, amplifying circuit, dsp processor and FPGA; Dsp processor, is the processing center of processing module, for the communication on upper strata, the detection of feedback voltage, with the communication of FPAG, the input of the storage of data and motor encoder signal; FPGA, for the communication of man-machine interaction, the output of pwm signal; Flash, is the storage center of processing module, and the data of parameter are all kept in Flash; Amplifying circuit is for amplifying the voltage that interface module feeds back and the voltage amplifying being input to dsp processor.
3. the variable density control system of a kind of Full-automatic computerized flat according to claim 1, it is characterized in that: described interface module, comprise a plurality of SPM modules that are connected with brshless DC motor, the corresponding brshless DC motor of each SPM module, SPM module is carried out for brshless DC motor in order to pwm signal is changed into UVW three-phase signal.
4. the variable density control system of a kind of Full-automatic computerized flat according to claim 1, is characterized in that: the moment of torsion of brshless DC motor is greater than 0.5N.M, and rotating speed is greater than 3000 revs/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320286940.2U CN203451767U (en) | 2013-05-23 | 2013-05-23 | Control system for variable density of full-automatic computerized flat knitting machine |
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| CN201320286940.2U CN203451767U (en) | 2013-05-23 | 2013-05-23 | Control system for variable density of full-automatic computerized flat knitting machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103243471A (en) * | 2013-05-23 | 2013-08-14 | 杭州鼎炬科技有限公司 | System and method for controlling variable density of fully automatic computerized flat knitting machine |
| CN107956032A (en) * | 2018-01-11 | 2018-04-24 | 汕头市连兴实业有限公司 | A kind of motor money bilayer degree mesh control structure and its motor mountain plate |
| CN108251958A (en) * | 2018-03-30 | 2018-07-06 | 常熟长润智能科技有限公司 | For the power-off compensation system of knitting circular knitting machine |
-
2013
- 2013-05-23 CN CN201320286940.2U patent/CN203451767U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103243471A (en) * | 2013-05-23 | 2013-08-14 | 杭州鼎炬科技有限公司 | System and method for controlling variable density of fully automatic computerized flat knitting machine |
| CN103243471B (en) * | 2013-05-23 | 2015-08-19 | 浙江鼎炬电子科技股份有限公司 | A kind of variable density control system of Full-automatic computerized flat and method |
| CN107956032A (en) * | 2018-01-11 | 2018-04-24 | 汕头市连兴实业有限公司 | A kind of motor money bilayer degree mesh control structure and its motor mountain plate |
| CN107956032B (en) * | 2018-01-11 | 2023-11-24 | 汕头市连兴实业有限公司 | Double-layer mesh control structure for motor type and motor mountain plate thereof |
| CN108251958A (en) * | 2018-03-30 | 2018-07-06 | 常熟长润智能科技有限公司 | For the power-off compensation system of knitting circular knitting machine |
| CN108251958B (en) * | 2018-03-30 | 2023-10-20 | 江苏润山精密机械科技有限公司 | Power-off compensation system for circular knitting machine |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG DINGJU ELECTRONIC TECHNOLOGY CO., LTD. Free format text: FORMER NAME: HANGZHOU DESIGN TECHNOLOGY CO.,LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 310052, 1 floor, No. 6, Middle Road, Binjiang District Park, Hangzhou, Zhejiang, 3 Patentee after: Zhejiang Dingju Electronic Technology Co., Ltd. Address before: 310052, 1 floor, No. 6, Middle Road, Binjiang District Park, Hangzhou, Zhejiang, 3 Patentee before: Hangzhou Design Technology Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140226 Termination date: 20160523 |