CN107938141B - The knitting-needle device and its control method of electromagnetic array driving - Google Patents
The knitting-needle device and its control method of electromagnetic array driving Download PDFInfo
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- CN107938141B CN107938141B CN201711340386.0A CN201711340386A CN107938141B CN 107938141 B CN107938141 B CN 107938141B CN 201711340386 A CN201711340386 A CN 201711340386A CN 107938141 B CN107938141 B CN 107938141B
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/66—Devices for determining or controlling patterns ; Programme-control arrangements
- D04B15/665—Driving-gear for programme or pattern devices
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/66—Devices for determining or controlling patterns ; Programme-control arrangements
- D04B15/68—Devices for determining or controlling patterns ; Programme-control arrangements characterised by the knitting instruments used
- D04B15/78—Electrical devices
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Knitting Machines (AREA)
Abstract
The invention discloses the knitting-needle devices and its control method of a kind of driving of electromagnetic array, the bottom of needle guard is detachably connected with needle stand, permanent magnetism housing is installed in needle guard, permanent magnet is connected in upper permanent magnetism housing, electromagnet skeleton is installed in needle guard, immediately below upper permanent magnetism housing, even number electromagnetic wand is uniformly installed along the circumferential direction of electromagnet skeleton, even number electromagnetic wand combines composition electromagnet arrays in series and parallel；Lower permanent magnetism housing is installed in needle guard, immediately below electromagnet skeleton, lower permanent magnet is connected in lower permanent magnetism housing, needle body is installed in needle guard, the lower end of needle body sequentially pass through permanent magnetism housing, upper permanent magnet, electromagnet skeleton, lower permanent magnet center after be threadedly coupled with the center of lower permanent magnetism housing, needle body is threadedly coupled with the center of upper permanent magnetism housing.The present invention solves the magnetic field of electromagnetic coil in the prior art or magnetic energy utilization rate is low, and the size of knitting equipment is big, drives the problem of energy consumption is high.
Description
Technical field
The invention belongs to knitting needle technical fields of weaving, and are related to the knitting-needle device and its controlling party of a kind of electromagnetic array driving
Method.
Background technique
Currently, the electronic needle selecting device of knitting computer jacquard circular knitting machine mainly has electromagnetic type and piezoelectric type both at home and abroad, they
Needle selection is realized using component of machine such as triangular cam, pattern bit, needle jacks.Since knitting needle comes by the contact with triangular cam
Realize braiding movement up and down, there are triangular cams to cause impact friction and lateral force to knitting needle for knitting mechanism.As knitting machine turns
Fast (in 15-20rpm or so as computer jacquard circular knitting machine, needle-selecting blade frequency is in 100Hz) is higher and higher, to knitting needle and
The performance requirement of triangular cam is higher, when the intensity of knitting needle and triangular cam itself, wearability etc. have reached extreme degree, just
Limit further increasing for revolving speed.According to statistics, at present both at home and abroad enterprise be mainly the material wear ability for concentrating on knitting needle,
Heat treatment process and knitting needle external form details Curve guide impeller etc., without carrying out any change to knitting needle driving principle and its structure
Become.
The prior art 1 (application number: 201110098202.0, title: magnetic suspension drives knitting needle method for selecting needle and device, public
Open day: on November 16th, 2011), disclosed magnetic suspension driving knitting needle needle selection installation cost is high, and (knitting needle structure is less than normal, therefore all
Part processing precision, manufacture require higher), structure is complicated；Unicoil driving axial magnetic suspension mode, driving force are less than normal；Three
In grade " inner ring, mesosphere and outer ring " structure, outer ring is not easy to replace with inner ring knitting needle；Top lacks limiting device, can not be in height
It is rapidly reached specified station in speed weaving, overall work frequency is relatively low.
The prior art 2 (application number: 201510089570.7, title: a kind of electromagnetic drive knitting needle needle selection device, publication date:
On June 24th, 2015), although disclosed electromagnetic drive knitting needle needle selection device overcomes some disadvantages in the prior art 1, still
The electromagnetic coil manufacture difficulty of processing of sunk skeleton is big, when knitting needle structure size continues to reduce, sunk skeleton part
Several reductions are pounded in coil winding, can not provide enough electromagnetic driving forces；Although being driven using double electromagnetic coils, compared with the prior art 1
Electromagnetic driving force is improved, but the magnetic field of electromagnetic coil or magnetic energy utilization rate are low, because the magnetic field of each electromagnetic coil only utilizes
The magnetic field of one end face, causes the structure size of the knitting equipment under suitable driving trip longer, needle moves direction of motion length
It include: lower electromagnetic coil height, needle stroke space length, upper electromagnetic coil height and needle body upper end guiding stroke；Wherein
Needle body upper end guiding stroke needs longer dimension just and can guarantee that guiding requires, and such structure is unfavorable for knitting needle miniaturization.Single electricity
Magnetic coil is in order to provide enough driving forces, and size is larger (outer diameter 18mm, internal diameter 8mm, high 12mm) at present, driving energy consumption compared with
Greatly, fever is obvious, and energy consumption is higher.
Summary of the invention
To solve the above problems, the present invention provides a kind of knitting-needle device of electromagnetic array driving, solve in the prior art
The magnetic field of electromagnetic coil or magnetic energy utilization rate are low, and the size of knitting equipment is big, drive the problem of energy consumption is high.
It is another object of the invention to provide a kind of control methods of the knitting-needle device of electromagnetic array driving.
The technical scheme adopted by the invention is that a kind of knitting-needle device of electromagnetic array driving, including needle guard, the bottom of needle guard
Portion is detachably connected with needle stand, and permanent magnetism housing is equipped in needle guard, is connected with permanent magnet in upper permanent magnetism housing, in needle guard,
Electromagnet skeleton is installed, electromagnet skeleton is hollow circular cylinder, along electromagnet skeleton immediately below upper permanent magnetism housing
Circumferential to be uniformly equipped with even number electromagnetic wand, even number electromagnetic wand combines composition electromagnet arrays；Needle guard is interior, electromagnet skeleton
Underface is equipped with lower permanent magnetism housing, is provided with lower permanent magnet in lower permanent magnetism housing, upper permanent magnet, lower permanent magnet magnetic pole be
Distribution up and down, and upper permanent magnet is opposite with the magnetic direction of lower permanent magnet；Needle body is installed, the upper end of needle body is knitting needle in needle guard
Head, knitting needle head stretch out needle guard, and the lower end of needle body sequentially passes through permanent magnetism housing, upper permanent magnet, electromagnet skeleton, lower permanent magnet
It is threadedly coupled behind center with the center of lower permanent magnetism housing, needle body is threadedly coupled with the center of upper permanent magnetism housing.
Of the invention to be further characterized in that, further, the quantity of the electromagnetic wand is 4,6,8 or 12, mutually not
The coil of the electromagnetic wand of adjacent half quantity is connected, the coil series connection of the electromagnetic wand of the other half quantity, two parts series coil
It is connected to power supply after parallel connection.
Further, the outer diameter of the needle body is less than the internal diameter of electromagnet skeleton.
Further, the bottom of the needle guard is detachably connected by straight pin screw with needle stand, straight pin screw and needle
Backing-up screw is connected between set.
Further, the electromagnet skeleton is connect by fastening stud with needle guard.
Another technical solution of the present invention is a kind of control method of the knitting-needle device of electromagnetic array driving, tool
Body follows the steps below: the coil of the electromagnet arrays of knitting needle uses external digital duty ratio driving method, and each piece is knitted
The coil of the electromagnet arrays of needle is controlled by an independent PWM wave driving circuit, complete by adjusting output signal duty ratio
It is adjusted at the electromagnetic force of electromagnet arrays；According to weaving, intermediate transition state is added, when knitting needle completes knocking over or lopping
Afterwards, PWM wave output is adjusted to transition state, maintains flotation line movement.
Further, the output power of the PWM wave transition state is the 40% of fully loaded output power.
The invention has the advantages that compared with prior art, the present invention having the advantage that
1, twin coil driving device is replaced using electromagnet arrays, is improved in driving trip situation identical with driving force
Nearly 1 times of electromagnetic field utilization rate, design size is reduced, the height of knitting equipment reduces 30-40%.
2, electromagnetic array uses external digital duty ratio driving method, using the PWM wave driving method after optimization, in knitting needle
After reaching Upper-lower Limit position, adjustment PWM wave is exported to the 40% of fully loaded output, in the case where completing weaving requirement
Greatly reduce operating power consumption.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the embodiment of the present invention.
Fig. 2 is the structural schematic diagram of electromagnet arrays in the embodiment of the present invention.
Fig. 3 is the knitting needle of the embodiment of the present invention in 250mA driving current lower stress and displacement relation figure.
Fig. 4 is the electromagnetic wand distribution schematic diagram of electromagnet arrays in the embodiment of the present invention.
Fig. 5 is the coil catenation principle figure of electromagnetic wand in the embodiment of the present invention.
Fig. 6 is that the magnetic pole distribution of the upper permanent magnet, lower permanent magnet, electromagnet arrays of uplink process in the embodiment of the present invention is shown
It is intended to.
Fig. 7 is that the distribution of the upper permanent magnet, lower permanent magnet pole, electromagnet arrays of downlink process in the embodiment of the present invention is shown
It is intended to.
In figure, 1. needle stands, 2. needle guards, 3. needle bodies, permanent magnetism housing on 4., permanent magnet on 5., 6. electromagnet skeletons, 7. electromagnetism
Volume array, 8. fastening studs, 9. lower permanent magnets, 10. lower permanent magnetism housings, 11. straight pin screws, 12. backing-up screws, 13. electromagnetism
Stick.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further elaborated.It should be appreciated that the embodiment
It is merely to illustrate the present invention, rather than is limited the scope of the invention.In addition, it should also be understood that, having read of the invention describe
After content, those skilled in the art can make various changes or modification to the present invention, and such equivalent forms equally fall within this Shen
Please defined by protection scope.
The structure of the embodiment of the present invention, as shown in Figs. 1-2, the bottom of needle guard 2 are removable by straight pin screw 11 and needle stand 1
Unload connection, backing-up screw 12 be connected between straight pin screw 11 and needle guard 2, permanent magnetism housing 4 is installed in needle guard 2, on forever
Permanent magnet 5 is connected in magnet holder 4, the underface of interior, the upper permanent magnetism housing 4 of needle guard 2 is equipped with electromagnet skeleton 6, electromagnet
Skeleton 6 is connect by fastening stud 8 with needle guard 2, and electromagnet skeleton 6 is hollow circular cylinder, along the circumferential direction of electromagnet skeleton 6
Even number electromagnetic wand 13 is uniformly installed, even number electromagnetic wand 13 combines composition electromagnet arrays 7 in series and parallel；In needle guard 2, electromagnetism
The underface of body skeleton 6 is equipped with lower permanent magnetism housing 10, is connected with lower permanent magnet 9 in lower permanent magnetism housing 10, upper permanent magnet 5, under
The magnetic pole of permanent magnet 9 is distribution up and down, and upper permanent magnet 5 is opposite with the magnetic direction of lower permanent magnet 9；It is equipped in needle guard 2
Needle body 3, the upper end of needle body 3 are knitting needle head, and knitting needle head stretches out the upper end of needle guard 2, and the lower end of needle body 3 sequentially passes through permanent magnetism housing
4, be threadedly coupled behind the center of upper permanent magnet 5, electromagnet skeleton 6, lower permanent magnet 9 with the center of lower permanent magnetism housing 10, needle body 3 with
The center of upper permanent magnetism housing 4 is threadedly coupled, for connecting upper permanent magnet 5, lower permanent magnet 9 with the needle body 3 of knitting needle and completing axis
To positioning, and the external screw thread for the internal screw thread and needle body 3 that can use permanent magnetism housing 4 adjusts the axial position of upper permanent magnet 5, together
Reason also can adjust the axial position of lower permanent magnet 9；The outer diameter of needle body 3 is less than the internal diameter of electromagnet skeleton 6, and electromagnet skeleton 6 is used
In guiding needle body 3.Upper permanent magnetism housing 4 is fixedly connected with upper permanent magnet 5 using cementation method, lower permanent magnetism housing 10 and lower permanent magnet
9 are fixedly connected using cementation method.
Design runlength 15mm, knitting needle electromagnetic force is not less than 60CN in stroke range, specifically, electromagnet skeleton 6 is outer
Diameter 10mm, internal diameter 5mm, height 15mm, magnetic core outer diameter 1.8mm, the height 17mm of electromagnetic wand 13, the coil outer diameter of electromagnetic wand 13
2.5mm, internal diameter 1.8mm, height 15mm.
Multiple electromagnetic wands 13 combine composition electromagnet arrays 7 in series and parallel, and the quantity of electromagnetic wand 13 is 4,6,8 or 12
It is a, the coil series connection of the electromagnetic wand 13 of mutual non-conterminous half quantity, the coil series connection of the electromagnetic wand 13 of the other half quantity, two
It is connected to power supply after dividing series coil in parallel；But the just size that the present invention finally calculates, by the limit of the inside and outside diameter of electromagnet skeleton 6
System, 4 or 6 electromagnetic wands can not provide the electromagnetic force of design requirement, and 12 and above electromagnetic wand size needs continue to zoom out,
Reaching will increase installation difficulty and technical costs on the basis of design requirement electromagnetic drive, therefore 8 electromagnetism are installed in embodiment
Stick 13；Due to adjusting electromagnetic driving force using PWM wave digital drive mode, but due to the impedance operator of electromagnetic coil, if
All series windings, then rear class coil electromagnetism driving force decrease is unable to reach desired effect；Coil is finally equivalent if all parallel connections
Resistance value is too small, also can not normal driving, therefore 8 electromagnetic wands 13 met by the way of combining in series and parallel driving force output want
It asks；As illustrated in figures 4-5, the quantity of electromagnetic wand 13 be 8, electromagnetic wand 13 counterclockwise number consecutively be I, D, II, A, III,
B, IV, C, No. I, No. II, No. III, No. IV series connection of electromagnetic wand 13, No. A, No. B, No. C, the series connection of D electromagnetic wand 13, two parts series connection
It is connected to power supply after coils from parallel connection of coils.
The magnetic pole of upper permanent magnet 5 and lower permanent magnet 9 is distributed above and below being, and upper permanent magnet 5 and lower 9 position of magnetic pole of permanent magnet
On the contrary；Specifically as shown in fig. 6-7, the upper end of upper permanent magnet 5 is the pole S, and the lower end of upper permanent magnet 5 is the pole N, lower permanent magnet 9 it is upper
End is the pole N, and the lower end of lower permanent magnet 9 is the pole S；Or the upper end of upper permanent magnet 5 is the pole N, the lower end of upper permanent magnet 5 is the pole S, under
The upper end of permanent magnet 9 is the pole S, and the lower end of lower permanent magnet 9 is the pole N；Change electromagnetism by changing current direction in electromagnet arrays 7
The pole N, the pole S of body, and then about 3 needle body is driven to run.
The prior art 2 in background technique is big using the electromagnetic coil manufacture difficulty of processing of sunk skeleton, when knitting needle is set
When standby size continues to reduce, several reductions are pounded in the coil winding of sunk skeleton part, can not provide enough electromagnetic driving forces；
If electromagnet outer diameter D=18mm, permanent magnet outside diameter d=12mm, skeleton sunk part can coiling size c=3mm, press
Line footpath 0.25mm, thickness itself that can be pounded around 12, then subtract electromagnetic coil skeleton, then skeleton sunk part can coiling pound number
It will continue to reduce.The present invention uses electromagnetic wand 13, and electromagnetic wand 13 is equivalent to a standardized element, facilitates design, customized, installation,
The coil of each electromagnetic wand 13 pounds that number is consistent, size is consistent, and the coil of each electromagnetic wand 13 is fixed on pcb board by certain requirement
On, convenient for line and installation, reduce manufacture and installation difficulty.
It is field A and the domain field A ' that electromagnet A both ends of the surface, which drive the effective magnetic field space of permanent magnet,；The driving of electromagnet B both ends of the surface
The effective magnetic field space of permanent magnet is field B and the domain field B ', and the prior art 2 is driven using the field B of the field A ' and electromagnet B of electromagnet A
Dynamic permanent magnet knitting needle；The magnetic field of an end face, the magnetic field of electromagnetic coil or magnetic energy is only utilized in the magnetic field of i.e. each electromagnetic coil
Utilization rate is low, causes to be unfavorable for the miniaturization of knitting equipment in identical driving trip flowering structure longer dimension；The present invention uses upper
Permanent magnet 5 and lower permanent magnet 9 drive needle body 3, utilize the region field A and field A ' of electromagnet arrays 7, the magnetic field utilization rate of electromagnet
It doubles, can effectively shorten structure size under identical driving trip；Due to only one electromagnet arrays 7, knitting equipment
Height reduce 30-40%.
The single electromagnetic coil of the prior art 2 is in order to provide enough driving forces, size larger (outer diameter 18mm, internal diameter at present
8mm, high 12mm), single coil internal resistance is 25 Europe, about 50 Europe of the total internal resistance of twin coil driven in series, the energy under the driving voltage of 12V
Meet driving force request, full load power consumption 12 × 12/50=2.88W ≈ 3W；Drive energy consumption larger, fever is obvious.The present invention adopts
It is driven by the way of combining in series and parallel with standard electromagnetic wand, about 12 Europe of internal resistance of each electromagnetic wand 13, in the drive of 7.5V
Meet the requirement of driving force, 7.5 × 7.5/24=2.34W of full load power consumption under dynamic voltage；(2.88- is reduced than the prior art 2
2.34/2.88=) 18.75% energy consumption.
The energy consumption ratio of this programme and technology 2 are as follows: (3W-1.8W)/3W=60%, i.e., the present invention is compared with the prior art 2, function
Consumption reduces by 40%.
The control method of the knitting-needle device of electromagnetic array driving of the present invention, specifically sequentially includes the following steps: the electromagnetism of knitting needle
The coil of volume array 7 uses external digital duty ratio driving method, and the coil of the electromagnet arrays 7 of each piece of knitting needle is by one
Independent PWM wave driving circuit control, realizes the independent control of every piece of knitting needle, dynamic by the braiding for controlling continuous device completion knitting needle processed
Make；The electromagnetic force that electromagnet arrays 7 are completed by adjusting output signal duty ratio is adjusted；Intermediate mistake is added according to weaving
State is crossed, after knitting needle completes knocking over or lopping, PWM wave output is adjusted to transition state, maintains flotation line movement, PWM wave mistake
The output power for crossing state is the 40% of fully loaded output power.
The driving method of electromagnetic coil has digital quantity control method and Analog control method.The former uses fixed voltage,
It is controlled using PWM mode, the adjusting of electromagnetic force is completed by adjusting signal dutyfactor；The latter is adjusted defeated using analog circuit
Enter the size of voltage or electric current to change electromagnetic force.The former governing response frequency is high, and the latter is limited by the response of AD adjusts frequency
It is complicated lower than the former and circuit, be not suitable for the control requirement that up to a hundred pieces of knitting needles in field of the present invention are operated alone.
Electromagnet arrays 7 use external digital duty ratio driving method, from Fig. 3 curve can be seen that needle body 3 it is upper,
At lower limit position, upper permanent magnet 5 or lower permanent magnet 9 and the interval of electromagnetic array 7 are reduced to 1mm, and electromagnetic force is anxious away from increase, this
When complete weaving require (60-120mN driving force), equivalent driving current can be reduced, that is, turn down driving PWM duty cycle.
The present invention exports to reduce entirely to knit according to the technological requirements in non-lopping and knocking over state using flotation line mode
The energy consumption of needle.I.e. the prior art 2 is exported (positive, negative sense is fully loaded with) by two function positions, and PWM output concentrates on positive maximum output and bears
To maximum output；And the present invention exports (forward direction is fully loaded, negative sense is fully loaded and flotation line output) by three function positions, according to the technological requirements,
Transition output is increased, wherein the lopping time accounts for 25%, and the flotation line time accounts for 50%, and the knocking over time accounts for 25%, can at most reduce list
The 50% of knitting needle energy consumption；At 3 Upper-lower Limit operating position of needle body, driver is according to the feedback signal of knitting needle position sensor
Carry out output adjusting, automatic adjustment driving PWM wave to the 50% of maximum value.
Full load power consumption 12 × 12/50=2.88W ≈ 3W of the prior art 2；Full load power consumption 7.5 × 7.5/24 of the present invention
=2.34W, so-called fully loaded power consumption are the driving loads so that knitting needle works in highest order or lowest order, when driving force maximum；It is full
PWM wave output valve is maximum under load condition, when using external digital duty ratio driving method, intermediate according to weaving design
Transition state there is no need to maintain full load condition always, can incite somebody to action after knitting needle completes knocking over (highest order) or lopping (lowest order)
PWM wave output, which is adjusted to fully loaded 40% exported, to maintain flotation line to act, therefore flotation line acts output power=full-load power
× 40%, and the lopping output time can be regarded as by the braid movement process that weaving is completed and account for 25%, the knocking over output time accounts for
25%, the flotation line output time accounts for 50%, therefore knitting needle average energy consumption of the invention are as follows: and full-load power × 50%+ full-load power ×
40% × 50%=full-load power × 75%=2.34W × 75%=1.755W, about 1.8W, greatly reduces operating power consumption.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (7)
1. a kind of knitting-needle device of electromagnetic array driving, which is characterized in that including needle guard (2), the bottom of needle guard (2) and needle stand
(1) it is detachably connected, is equipped with permanent magnetism housing (4) in needle guard (2), be connected with permanent magnet (5) in upper permanent magnetism housing (4),
It is equipped with electromagnet skeleton (6) in needle guard (2), immediately below upper permanent magnetism housing (4), electromagnet skeleton (6) is hollow annular
Cylinder, the circumferential direction along electromagnet skeleton (6) are uniformly equipped with even number electromagnetic wand (13), and even number electromagnetic wand (13) combines composition
Electromagnet arrays (7)；Lower permanent magnetism housing (10), lower permanent magnetism housing are installed in needle guard (2), immediately below electromagnet skeleton (6)
(10) be provided with lower permanent magnet (9) in, upper permanent magnet (5), lower permanent magnet (9) magnetic pole be distribution up and down, and upper permanent magnet
(5) opposite with the magnetic direction of lower permanent magnet (9)；It being equipped with needle body (3) in needle guard (2), the upper end of needle body (3) is knitting needle head,
Knitting needle head stretches out needle guard (2), and the lower end of needle body (3) sequentially passes through permanent magnetism housing (4), upper permanent magnet (5), electromagnet skeleton
(6), it is threadedly coupled behind the center of lower permanent magnet (9) with the center of lower permanent magnetism housing (10), needle body (3) and upper permanent magnetism housing (4)
Center be threadedly coupled.
2. a kind of knitting-needle device of electromagnetic array driving according to claim 1, which is characterized in that the electromagnetic wand (13)
Quantity be 4,6,8 or 12, the coil series connection of the electromagnetic wand (13) of mutual non-conterminous half quantity, the other half quantity
Electromagnetic wand (13) coil series connection, connected to power supply after two parts series coils is in parallel.
3. a kind of knitting-needle device of electromagnetic array driving according to claim 1, which is characterized in that the needle body (3)
Outer diameter is less than the internal diameter of electromagnet skeleton (6).
4. a kind of knitting-needle device of electromagnetic array driving according to claim 1, which is characterized in that the needle guard (2)
Bottom is detachably connected by straight pin screw (11) with needle stand (1), is connected between straight pin screw (11) and needle guard (2) anti-
Loose screw (12).
5. a kind of knitting-needle device of electromagnetic array driving according to claim 1, which is characterized in that the electromagnet skeleton
(6) it is connect by fastening stud (8) with needle guard (2).
6. a kind of control method of the knitting-needle device of electromagnetic array driving as described in any one in claim 1-5, feature exist
In specifically following the steps below: the coil of the electromagnet arrays (7) of knitting needle uses external digital duty ratio driving method,
The coil of the electromagnet arrays (7) of each piece of knitting needle is controlled by an independent PWM wave driving circuit, by adjusting output letter
The electromagnetic force that number duty ratio completes electromagnet arrays (7) is adjusted；According to weaving, intermediate transition state is added, knitting needle is worked as
After completing knocking over or lopping, PWM wave output is adjusted to transition state, maintains flotation line movement.
7. a kind of control method of the knitting-needle device of electromagnetic array driving according to claim 6, which is characterized in that described
The output power of PWM wave transition state is the 40% of fully loaded output power.
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| CN110989395B (en) * | 2019-11-18 | 2022-08-02 | 武汉纺织大学 | Electromagnetic-permanent magnet coupling driving knitting needle magnetic field simulation system and simulation method |
| CN111691056B (en) * | 2020-05-15 | 2021-11-30 | 武汉纺织大学 | Electromagnetic array type driving device of knitting needle flat knitting machine and control method thereof |
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| CN204311199U (en) * | 2014-10-31 | 2015-05-06 | 武汉纺织大学 | A kind of non-contact type Computerized flat knitting machine knitting needle drive unit |
| CN104727013A (en) * | 2015-02-27 | 2015-06-24 | 武汉纺织大学 | Electromagnetic-driven knitting needle selection device |
| CN204676252U (en) * | 2015-05-25 | 2015-09-30 | 浙江永景软件开发有限公司 | A kind of electromagnet slide cam selector |
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| CN107938141A (en) | 2018-04-20 |
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