CN107544572A - A kind of energy-saving computer stocking field device control system and its control method - Google Patents
A kind of energy-saving computer stocking field device control system and its control method Download PDFInfo
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- CN107544572A CN107544572A CN201710649216.4A CN201710649216A CN107544572A CN 107544572 A CN107544572 A CN 107544572A CN 201710649216 A CN201710649216 A CN 201710649216A CN 107544572 A CN107544572 A CN 107544572A
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Abstract
The present invention discloses a kind of energy-saving computer stocking field device control system and its control method, whole system includes the dual core processors control system that man-machine dialogue system device and master controller are formed, human-computer interaction function is realized by the embedded main board that core is formed of embedded microprocessor, main responsible LCD is shown and touch screen operation, executing agency is realized by the control panel that core is formed of digital signal processor, full-jacquard mechanism and transmission mechanism control function, it is responsible for hosiery machine solenoid valve driving module, slide cam selector drive module, the coordinate operation of driving stepper motor module and servomotor drive module totally 4 functional modules, so as to control the various site control points of hosiery machine, pass through the output of control signal, and the collection of respective feedback signal, realize the real-time control to each control point, so as to complete whole braid movements.The present invention have it is simple to operate, it is easy to control, power consumption save it is low with caloric value the advantages of.
Description
Technical field
The invention belongs to computer stocking technical field, more particularly to a kind of energy-saving computer stocking field device control system
System and its control method.
Background technology
Socks are essential in people's daily life, it is by socks as one kind representative in textile product
Machine braiding forms.Hosiery machine is a kind of round weft-knitting machine, and it is braiding quilted stockings, the main machine of silk stocking.Computer stocking is collection meter
Calculation machine technology, electronic technology, knitting technology, mechanical manufacturing technology are in supermatic knitting equipment of one.And computer socks
Machine control system is the control core of computer stocking, is mainly used in controlling each mechanism by the mutually coordinated work of braiding requirement, according to
Different flower pattern realize multiple automated production control functions such as electronic jacquard, segmentation braiding, fault self-checking, so as to realize machine
Run well, the quality of its performance directly decides the levels of audit quality and production efficiency of socks product.Need to control in computer stocking
Field device it is a lot, and use the normally opened often pass method of in general to be controlled, very big current value and violent electricity can be caused
Stream peak value changes, substantial amounts of power is not only wasted, and easily heating causes to burn out component because temperature is too high.
The content of the invention
It is an object of the invention to provide a kind of energy-saving computer stocking field device control system and its control method, this
Method controls high-current device by quickly changing the frequency of electric signal, can preferably settlement computer sock knitting machine control system
Steady start and stop problem, System current is reduced, and then reduce power consumption, reduce energy consumption.
To achieve these goals, technical scheme is as follows：
A kind of energy-saving computer stocking field device control system and its control method, it is characterised in that whole system includes
The dual core processors control system that man-machine dialogue system device and master controller are formed, is formed by core of embedded microprocessor
Embedded main board realize human-computer interaction function, mainly be responsible for touch screen operation, formed using digital signal processor as core
Control panel realizes executing agency, full-jacquard mechanism and transmission mechanism control function, is responsible for hosiery machine solenoid valve driving module, slide cam selector drives
The coordinate operation of 4 dynamic model block, driving stepper motor module and servomotor drive module functional modules, so as to control hosiery machine each
Kind site control point, by the output of control signal, and the collection of respective feedback signal, realizes the reality to each control point
When control, so as to complete whole braid movements.
The method that solenoid valve driving module is powered using interval, i.e., after to solenoid valves certain time, revocation is added in
Voltage thereon, give and be powered again before exiting, interval, formation have some cycles and the PWM waveform of dutycycle repeatedly with this.
Slide cam selector drive module is by the way of theory is powered and interval energized phase combines, and theoretical step mode is i.e. in needle selection
When knife needs to exit, give the DC voltage of energization certain time, cancel at once afterwards；Interval step mode is powered giving
After regular hour ensures its change state, certain time is powered off, then continues to be powered again, it is reciprocal with this.
Driving stepper motor module uses frequency conversion control technique, and stepping is controlled by changing the frequency of phase signal in real time
The speed of motor and position.
Servomotor drive module uses space vector pulse width modulatio technology, and permanent magnetism is driven by core of DSP
Synchronous servo motor is run.
The present invention compared with prior art, has following technique effect using above technical scheme：
A kind of energy-saving computer stocking field device control system of the present invention and its control method, by quickly changing telecommunications
Number frequency control magnetic valve, slide cam selector, stepper motor and servomotor, effectively reduce the power consumption and heat dissipation capacity of system,
System run all right, safety and power saving.
Brief description of the drawings
The embodiment of the present invention is described further below in conjunction with the accompanying drawings.
Fig. 1：Computer stocking control system block diagram；
Fig. 2：Touch screen interface circuit；
Fig. 3：Slide cam selector hardware driving circuit diagram；
Fig. 4：Stepper motor hardware driving circuit diagram；
Fig. 5：Solenoid hardware drive circuit figure；
Fig. 6：Servomotor hardware block diagram；
Fig. 7：FLASH memory module circuit diagrams；
Fig. 8：Main program flow chart；
Fig. 9：Serve Motor Control block diagram.
Embodiment
From Fig. 1 system block diagrams, computer stocking control system is made up of man-machine interaction and master controller two parts.It is man-machine
Interactive portion uses embedded-type ARM microprocessor, is mainly responsible for LCD liquid crystal displays and touch screen operation and passes through embedded WIFI
Communication realizes pattern data file, knits the remote data transmission of the information such as socks total amount and speed.Master controller uses
DSP microprocessors, the main coordinate operation for being responsible for main responsible hosiery machine modules, control the various site control points of hosiery machine, main
Functional module is wanted to have：Solenoid valve driving module, slide cam selector drive module, driving stepper motor module and servomotor driving mould
Block, by the output of control signal, and the collection of respective feedback signal, realization controls each control point in real time, completes complete
The braid movement in portion.
The communication modes of CAN are used between embedded-type ARM microprocessor and DSP microprocessors, because this two pieces of cores
Piece is all integrated with CAN communication module, and the cost of control system can be reduced using this communication modes, simplifies the complexity of system
Degree, system can be with stable operation.Flower is realized using wired (Ethernet, CAN etc.) or wireless (WI-FI, GPRS etc.) communication mode
Type data file, the remote monitoring for knitting the information such as socks total amount and speed.
Touch screen interface circuit：Touch-screen is driven by ADS7846, and CPU is connected to by ARM SPI interface.ADS7846
Tetra- pins of X+, Y+, X-, Y- of chip-side are coupled with four-wire system touch-screen, and/CS, DCLK, DIN, DOUT are respectively connected to
On SPI pins on ARM ,/PENIRQ is connected to ARM I/O port, for inputting interrupt signal.ADS7846 effect is constantly
Voltage, the coordinate then electric signal being changed on X, Y, specific control circuit such as Fig. 2 institutes are applied to X+, Y+, X-, Y- pin
Show.
Slide cam selector drive circuit：The needle selection signal that host computer ARM is sent is driven after slave computer DSP by slide cam selector
Circuit amplifies so as to drive digitalized needle selecting machine to carry out hosiery machine needle selection operation.The serial needle selection data come out from slave computer DSP are passed through
Photoelectrical coupler PS2501 goes to drive H-bridge circuit to work, and physical circuit is as shown in Figure 3.
Stepper motor driving circuit：Using the line stepper motor 28BYJ48 of four phase five, pass through 5V powered by direct current.The motor
It is a kind of decelerating step motor, its speed reducing ratio 1: 64, by calculating step angle as 5.625/64 degree, to allow it to rotate one
Circle, then need 360/5.625 × 64=4096 pulse.As long as applying pulse by different phase sequences to 28BYJ48 stepper motors,
With regard to that it can be made to bring into operation.If change the application order of pulse, it is possible to change the rotation direction of stepper motor.Stepper motor drives
Dynamic circuit is as shown in figure 4, the ULN2003 input of pin 1 to 4 meets DSP GPIO2 to GPIO5 mouths, output end 1 respectively in figure
The phase of A, B, C, D tetra- for connecing stepper motor respectively to 4.
Driving circuit for electromagnetic valve：The solenoid-driven voltage used in computer jacquard sock knitting machine control system for direct current 24V, because
Control signal for control terminal is 5V, so in order to which 5V to be changed into 24V drive signal, with Darlington transistor TIP122 side
Formula.Driving circuit for electromagnetic valve is as shown in Figure 5.
Serve Motor Control circuit：Using three-phase alternating-current servo motor driving rotating cylinder main shaft rotation, its hardware controls block diagram
As shown in Figure 6.Using orthogonal voltage-source type frequency changer circuit is handed over, mainly include main circuit and control circuit two parts.Three-phase alternating current
After the rectified device of civil power and filter condenser rectifying and wave-filtering, driven forever after pump voltage limitation circuit and power inverter inversion
Magnetic-synchro motor；Control circuit is detected, rotor rotating speed and displacement detecting and drive using DSP as core by voltage and current
Dynamic protection circuit composition.
NAND FLASH memory modules：Due to the limited storage space in master controller piece, so using NAND FLASH
Memory module deposits startup program, user profile, pattern data file, application program etc., here using K9F2808U conducts
NAND FLASH memory modules, its circuit are as shown in Figure 7.
Software systems：Computer jacquard sock knitting machine control system software overview flow chart is as shown in Figure 8.System software mainly includes
Solenoid valve module, slide cam selector module, stepper motor module and servomotor module section.
Solenoid valve module, the method that solenoid valve control is powered using interval, to solenoid valves certain time is described below
Afterwards, revocation is added in voltage thereon, gives and is powered again before exiting, and with this, interval, formation have some cycles and duty repeatedly
The PWM waveform of ratio.The cycle of solenoid valve control signal and dutycycle：Control signal frequency 2.5-5KHz, dutycycle are set to 50%.
Slide cam selector module is described below, slide cam selector controls needle selection by changing the sense of current on its internal hot-wire coil
State is thrown or exited to knife into.After the hot-wire coil both ends in slide cam selector apply voltage, electric current in coil can with when
Between growth and constantly increase, caloric value also improves therewith.Slide cam selector conduction time and syringe rotating speed, crochet hook quantity and slide cam selector
On needle selecting knife quantity it is relevant, calculation formula：T in formulaMAXSlide cam selector maximum conduction time is represented, V is syringe
Rotating speed, N be main syringe pin number, n be slide cam selector on needle selecting knife quantity.
Be powered the control mode for coordinating interval to be powered using theory, and needle selecting knife uses interval step mode when throwing state into,
Theoretical step mode is used when needle selecting knife exits.
Theoretical step mode：When needle selecting knife needs to exit, give the DC voltage of energization certain time, remove at once afterwards
Pin；
It is spaced step mode：Give and be powered after the regular hour ensures its change state, power off certain time, then again after
It is continuous to be powered, it is reciprocal with this.Dutycycle is set as 50%, changes the value of operation flag in the interrupt function of timer, in main journey
Sequence is powered in circulating according to the value of this flag bit or power operation.
Stepper motor module is described below, stepper motor encourages basic step pitch working method using two-phase.
For conveying the stepper motor of tying elastic, its speed and the rotating speed (i.e. servomotor rotating speed) of syringe are kept
Identical speed ratio.When weaving tying, servomotor has an acceleration and deceleration process, if the rotating speed of servomotor is v (t), then
The distance that the moment turns over from t0 to t1 is：And what the distance that now elastic motor turns over turned over servomotor
Distance S keeps certain ratio, is set to aS, wherein a is proportionality coefficient, thenSo stepper motor speed
Certain proportionality coefficient a only need to be kept with the ratio between servomotor speed, the tying of regular length just has the rubber of a times of the length
Muscle, then the consistent purpose of the elasticity of whole tying can be achieved, and can be adjusted with the size of a values.
For controlling the stepper motor of syringe height, its rate request is not high, but displacement needs more accurate control.This
Stepper motor can adjust 2 circles altogether, i.e., the difference of syringe peak and minimum point turns over the distance of 2 circles equivalent to stepper motor, and
There is the lowest point that a Hall sensor can detect syringe.Stepper motor turns to minimum point and then according to socks
Specification requirement rotates corresponding displacement.
Servomotor module is described below, control system is using speed outer shroud, the double circle structure of current inner loop, by permanent magnetism
The threephase stator electric current i of synchronous servo motora、ibThe static α of two-phase is transformed to through Clerk, the electric current i under β coordinate systemsα, iβ, then
The exciting current i being transformed to by Park in two-phase rotating coordinate systemdWith torque current iq；Servomotor given rotating speed ω*With electricity
Machine actual speed ω deviation delta ω exports q shaft current set-points through rotating speed pi regulatorRespectively with id、iqCompare
Difference obtains the voltage U under two-phase rest frame after electric current pi regulator and Park inverse transformations afterwardsα, Uβ, they are sent into
SVPWM unitary operations produce the SVPWM signals of drive motor work.By adjusting the PI parameter values of electric current loop and speed ring,
Permanent magnet synchronous servo motor is set to meet the performance requirement of servo-control system.
Claims (5)
1. a kind of energy-saving computer stocking field device control system and its control method, it is characterised in that whole system includes people
The dual core processors control system that machine interactive processor and master controller are formed.Formed using embedded microprocessor as core
Embedded main board realizes human-computer interaction function, and main responsible LCD is shown and touch screen operation, using digital signal processor as core
The control panel of composition realizes executing agency, full-jacquard mechanism and transmission mechanism control function, is responsible for hosiery machine solenoid valve driving module, choosing
The coordinate operation of pin device drive module, driving stepper motor module and servomotor drive module totally 4 functional modules, so as to control
The various site control points of socks production machine, by the output of control signal, and the collection of respective feedback signal, realize to each control
The real-time control of point is made, so as to complete whole braid movements.
2. a kind of energy-saving computer stocking field device control system according to claim 1 and its control method its feature
It is：The method that described solenoid valve driving module is powered using interval, i.e., after to solenoid valves certain time, revocation adds
In voltage thereon, give and be powered again before exiting, interval, formation have some cycles and the PWM ripples of dutycycle repeatedly with this
Shape.
3. a kind of energy-saving computer stocking field device control system according to claim 1 and its control method are：
Described slide cam selector drive module is by the way of theory is powered and interval energized phase combines, and theoretical step mode is i.e. in needle selecting knife
When needing to exit, give the DC voltage of energization certain time, cancel at once afterwards；Interval step mode is giving energization one
After the fixed time ensures its change state, certain time is powered off, then continues to be powered again, it is reciprocal with this.
4. a kind of energy-saving computer stocking field device control system according to claim 1 and its control method its feature
It is：Described driving stepper motor module uses frequency conversion control technique, is controlled by changing the frequency of phase signal in real time
The speed of stepper motor and position.
5. a kind of energy-saving computer stocking field device control system according to claim 1 and its control method its feature
It is：Described servomotor drive module uses space vector pulse width modulatio technology, is driven forever by core of DSP
Magnetic-synchro servomotor is run.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710649216.4A CN107544572A (en) | 2017-07-24 | 2017-07-24 | A kind of energy-saving computer stocking field device control system and its control method |
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| CN201710649216.4A CN107544572A (en) | 2017-07-24 | 2017-07-24 | A kind of energy-saving computer stocking field device control system and its control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108342824A (en) * | 2018-03-30 | 2018-07-31 | 常熟长润智能科技有限公司 | Needle selection control device with indicating fault and slide cam selector |
| CN108532115A (en) * | 2018-03-30 | 2018-09-14 | 常熟长润智能科技有限公司 | PWM control systems for circular knitting machine control |
-
2017
- 2017-07-24 CN CN201710649216.4A patent/CN107544572A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108342824A (en) * | 2018-03-30 | 2018-07-31 | 常熟长润智能科技有限公司 | Needle selection control device with indicating fault and slide cam selector |
| CN108532115A (en) * | 2018-03-30 | 2018-09-14 | 常熟长润智能科技有限公司 | PWM control systems for circular knitting machine control |
| CN108532115B (en) * | 2018-03-30 | 2020-10-09 | 常熟长润智能科技有限公司 | PWM control system for controlling circular knitting machine |
| CN108342824B (en) * | 2018-03-30 | 2023-06-20 | 常熟长润智能科技有限公司 | Needle selection control device with fault indication and needle selector |
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Application publication date: 20180105 |
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