CN1414580A - Control method for winding shaping of space triangular symmetrical R type power transformer iron core - Google Patents
Control method for winding shaping of space triangular symmetrical R type power transformer iron core Download PDFInfo
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- CN1414580A CN1414580A CN 02130844 CN02130844A CN1414580A CN 1414580 A CN1414580 A CN 1414580A CN 02130844 CN02130844 CN 02130844 CN 02130844 A CN02130844 A CN 02130844A CN 1414580 A CN1414580 A CN 1414580A
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Abstract
A control method for iron core forming of powder transformer in space triangle symmetric R type controls the strip feeding speed which controls the rotation speed of any layer by the converter to maintain the average feeding speed as a constant, conrol the forming movement which controls the centre line of each layer strip from the present position to the centre line position of strip overlaying for forming by using a stepping motor to drive sliding operation desk, control the deviation movement which makes a real-time detecting of deviation amount and direction between the strip centre line and overlying centre line of strip for forming by using the detection device and to rectify the deviation of strip centre line by using the stepping motor to drive silding operation desk.
Description
Technical field
The control method of space triangle symmetry R type motor transformer core winding shaping belongs to power transformer iron core winding shaping technical field.
Background technology
Present most transformer core winding apparatus all is all to be fixed on guiding centering, tight other functional units that reach of the back of the body on the workbench, and workbench is fixed on the lathe bed, plane symmetry day that is applied to reel traditional the type power transformer and electronic transformer still can, the symmetrical tiltedly semi-circular section R type power transformer iron core of the space triangle that but is difficult to reel, and space triangle symmetry R type power transformer is than the more competitive and promotional value of other various power transformers.According to the retrieval, solve this problem at present and generally use hand operated control method.
Summary of the invention
The object of the present invention is to provide the control method of a kind of space triangle symmetry R type power transformer iron core winding shaping.
Technical problem to be solved by this invention is how to realize the shape and the precision of non-centrosymmetry cross section unshakable in one's determination and entity, thereby promptly how to control the motion control that realizes coiling band in the winding process and guarantee the coiling superposed positions: for example a kind of space triangle symmetry tiltedly cross section of semi-circular section power transformer is that an inclination angle is 30 degree straight line and half-round curve, and two end points of semicircle and two end points of straight line overlap forms semi-circular sections (as accompanying drawing 1).
For achieving the above object, the technical scheme that control method adopted is: guiding centering unit, back of the body clamping unit and detecting unit all are fixed on the sliding table in the winding process, band is fixed with respect to position, the workbench left and right sides, with moving of sliding table.Forming process is divided into feed motion, building motion and correction campaign, and guarantees geometry and precision by coordinating three kinds of motions of control.The motion analysis of winding process band as shown in Figure 5.
Feed motion: band under the gyration of mould traction at the preceding shifting movement of previous profiled surface upper edge self center line.
Building motion: building motion is defined as the center line that makes band in winding shaping technology for the shape and structure feature that forms part is moved to the position of shaping band stack center line by present position motion.
Correction motion: when the center line that is meant band departs from ideal position and make band dynamically remain on the motion of shaping center line.
The invention is characterized in: it makes strip coil keep constant around the average feed speed v in a week with Frequency Converter Control mould revolution rotating speed, and it is to go to control any n layer rotational speed N by following formula
nRealize N
n=v/[2 π (r
0+ nk
t)], wherein, r
0Be the mean value of the initial radius of gyration, n is the number of plies of current winding shaping, k
tBe the equivalent depth of band, promptly consider because band injustice, the factor such as not tight of reeling are carried out revised thickness to former band; It goes to drive motion that the band of a center line fixing commutation, guiding centering, tight each device of the back of the body and removing to control to(for) the sliding table of the side-play amount measuring transducer of shaping band stack center line moves to the position of shaping band stack center line by the present position motion that promptly is shaped with stepper motor, it is to count P by the offset movement output control pulse that following formula goes to control any n week to realize P=[K
tTg (α)+(W
n-W
N-1)/2]/d, its condition is that the number of turns of current winding shaping is number of plies n greater than the number of turns n of the offset movement that begins to be shaped
0, wherein, K
tBe above-mentioned equivalent depth, α is the angle of core section oblique line, W
nBe the width when anterior layer, W
N-1Be the width of preceding one deck, d is a pulse equivalency; It removes to detect the size and Orientation that the band center line departs from the side-play amount of shaping band stack center line in real time with position detecting device in any winding process once, drive above-mentioned sliding table with above-mentioned stepper motor again the motion of promptly rectifying a deviation is corrected in the position of band center line, it is to remove control correction motion output umber of pulse P by following formula
1Realize P
1=(X
1-X
0)/d, wherein, d is above-mentioned pulse equivalency, X
1Be the side-play amount of current band center line, X
0Position for the band center last time measured.Described correction campaign output umber of pulse P1 obtains with following method: a pair of displacement transducer is fixed on the sliding table symmetrically, move with sliding table, the center line that guarantees guiding centering and above-mentioned offset measurement transducer simultaneously point-blank and with the coiling axis normal, in winding process, ceaselessly measure and calculate the side-play amount of band with respect to guiding mechanism, calculate each all mean deviation amount again, this side-play amount and building motion side-play amount algebraic addition and the result is converted into umber of pulse obtains, when just having begun to reel, next week drives moving of above-mentioned sliding table to realize the correction motion by above-mentioned stepping motor.
The present invention is the winding shaping of implementation space triangle symmetry R type power transformer iron core accurately, and the day type power transformer iron core of the symmetry of also can reeling, cross sectional shape can be that circle, stairstepping, broken line shape and R improve shape.
Description of drawings
Fig. 1: space triangle symmetry R type power transformer core construction
Fig. 2: plane symmetry day type power transformer iron core structure
Fig. 3: winding apparatus structural representation
Fig. 4: control principle figure
Fig. 5: band winding process motion analysis
Fig. 6: control program flow chart
Fig. 7: sliding table device for mechanical structure chart
Embodiment
In the accompanying drawing 1,1a is cross sectional shape figure, 1b is the shape figure of partial cross section, 1c is its stereogram, shown space triangle symmetry semi-circular cross-section iron-core transformer is as follows than the structural advantages shown in the accompanying drawing 2: the iron core that is the triangle layout of this transformer is assembled by three identical single-phase iron cores, and it is circular that the core limb cross section is approximately, and is the equilateral triangle layout, structure is symmetry fully, has improved the performance of transformer; Three bands are the same, avoided twice processing of day type structure inner and outer ring, simplified the course of processing, improved the utilance of material; This device has that volume is little, in light weight, and loss is low, and material is economized and the advantage of three-phase balance.Among Fig. 2, the 22nd, inner ring core band, the 23rd, outer ring core band.
Sliding table device (as Fig. 3) mainly is made up of following functional unit: changement 1, first guiding mechanism 2, the tight device 3 of the back of the body, smart guiding mechanism 4, displacement sensor device 5, changement 6 changements, slide plate 12 and actuating unit etc.Changement 1, first guiding mechanism 2, the tight device 3 of the back of the body, smart guiding mechanism 4, displacement sensor device 5, changement 6 changements all are fixed on the slide plate 12, move with slide plate.Stepping motor 8 is fixed on the lathe bed 11, and the revolution of stepping motor passes to ball-screw by shaft coupling, and feed screw nut is fixedlyed connected with slide plate 12, drives slide plate front and back motion on rolling linear guide 7, moves to predetermined superposed positions thereby drive band.Just the center line of guiding mechanism 2, smart guiding mechanism 4 and a pair of side-play amount measuring transducer 5 is consistent and vertical with the axis of rotation of back winding shaping part.
Band is at first carried out the first location at band center by first guiding centering device 2 through reverse wheel 1 back; The tight device 3 of the back of the body provides the tensile force in the forming process to guarantee the tightness unshakable in one's determination and the equivalent depth of band, the tight device of back of the body upper roller can move up and down under the effect of cylinder, when the needs band passes, upper roller lifts and allows band pass, when one section of band after fixing on the mould upper roller fall and compress band; 4 pairs of bands of smart guider carried out smart centering before being shaped on the mould, smart guiding centering mechanism is an a pair of gear spring mechanism, connecting rod rotates along with the variation of strip width, the curved side of under the effect of torsion spring, being close to band all the time, and two gear connecting rod torsion spring mechanisms are identical, they keep strokes and synchronously; Commutate by reverse wheel 6 after through smart guiding centering mechanism 4, so that provide coiling required tensile force, and the vertical component of tensile force can provide a pressure, compresses the band material on the shaping dies again; Under the effect that rolls of the rotation of main shaft mould 18 and contact roller 19, realize winding shaping after the commutation.All functions unit on the workbench can slide together with slide plate.There is photoelectric counter to realize the calculating of the coiling number of turns on the mould gyroaxis 18, according to the mobile realization building motion of different control system control slide plate 12 on guide rail 7 of the number of turns promptly be shaped the cross section 30 degree straight lines of part 21 and the shaping of arc section by control system.Offset displacement transducer 5 on the slide plate changes along with the variation of strip width, the contact of assurance transducer is close to the curved side of band all the time, thereby detect the side-play amount at band center according to the variation difference of both sides sensor monitors data, this side-play amount also is converted into the pulse output of correction motion and is carried out by slide plate.
This control system is made up of main control unit, input unit and output unit three parts, is a closed-loop control system.The control system schematic diagram as shown in Figure 4.Input unit comprises the counting input of the coiling number of turns and the detection limit input of displacement transducer; Main control unit is realized the setting of coiling kind and various parameters and shows output real-time parameter (having processed the number of turns, position offset, winding rotary speed and warning message or the like) that control system realizes feed motion, building motion and correction campaign by man-machine interface.Output unit comprises frequency converter and actuator.
The photoelectric counter record coiling number of turns in the winding process, transducer constantly detects the center deviation of band, input unit sends these information to control system, and control system is converted into building motion according to the superposed positions of number of turns calculating band with positional information; To be converted into the output of correction motion impulse amount after the position deviation information processing, the translation realization by slide plate guarantees the accurate of band center.
Control system realizes feed motion (Y motion), building motion (X motion) and the correction motion (C motion) of band.
1) Feed Motion Control (control of mould revolution rotating speed)
The feed motion of band is actual to be to drive band motion with a kind of tensioning state under the effect of the tight power of the back of the body by the rotation of wireline reel.Feed speed is by the radius of gyration decision of the rotating speed of wireline reel and coiling mould, i.e. v=rw.Increase progressively variation along with the increase winding radius of winding layer is, for the uniformity of winding shaping part keeps the constant of band feed speed as far as possible, suppose mould for circular, then the spool rotating speed is:
N
nN layer rotating speed, r
0The mean value of the initial radius of gyration (because mould is not circular), the v strip coil is around the average feed speed of a circle, K
tThe equivalent depth of band, the current winding shaping number of plies of n.
The rotating speed of gyroaxis is by Frequency Converter Control, because the thickness of band is less, the approximate per 5 circle speed governing of this control system once, by the revolution of control system according to record, count down to 5 multiple then the AD module output of control system carry out a speed governing with the corresponding analog signal of rotating speed to frequency converter, guarantee unshakable in one's determination in forming process the consistency of feed speed.
2) building motion control (calculating of working table movement umber of pulse)
Building motion control is the key of this control system, because winding shaping is the process of recovering again after the 3D solid expansion, the process of reeling is exactly the forming process of part feature, and the be shaped length of moment band and the position of width and center line thereof will directly determine the form accuracy of winding shaping part.Control system is according to the shaping offset movement of position (position of length, width and center line) the control band of band, because the width of each layer unshakable in one's determination is the same, and the width and the center of the extension position of band and correspondence thereof all change along with the variation of the number of plies (the counting number of turns), and the gross data of these parameters by and only come to determine by the number of plies (number of turns), so the building motion amount is the function of the number of turns, can determine the position of band and then the control of realization building motion according to the counting number of turns.
The calculating of the building motion amount (umber of pulse) of band:
P＝[K
ttg(α)+(W
n-W
n-1)/2]/d (n＞n
0)
P: the umber of pulse of offset movement output control
K
t: the equivalent depth of band
N: the number of turns
n
0: the arc section number of turns number of turns of offset movement (begin be shaped)
W
n: when the width of anterior layer
W
N-1: the width of preceding one deck
D: the pulse equivalency of stepper motor transmission system
N: the umber of pulse of offset movement output control
3) correction motion
Control system was corrected band according to the size and Orientation of side-play amount when position detecting device detected band misalignment shaping center, and the correction motion is finished by the implement device and the mechanism of building motion.
Δ X
1: the side-play amount of current band center line
Δ X
0: the band position of center line of Ce Lianging last time
P
1: correction motion output umber of pulse
D: pulse equivalency
Goodbye Fig. 6:
Program begins afterwards to import by man-machine interface and calculate required machined parameters, comprises transformer specification model, coiling minimax speed, processing number of total coils etc.; Whenever the counter that turns around after the coiling beginning adds one, and counting finishes when reaching the processing number of total coils; When the coiling number of turns greater than after beginning to be offset the number of turns, calculate the shift pulse number and begin to process back transducer input and handle the sample count that subprogram is not stopped, laggard capable correction calculations is handled in input; Send stepping motor after shift pulse and correction pulse are synthetic; Judge whether the current number of turns is the speed governing number of turns, is then to carry out speed governing.
The structure chart of sliding table device for mechanical shown in the accompanying drawing 7.Changement 1, first guiding mechanism 2, the tight device 3 of the back of the body, smart guiding mechanism 4, displacement sensor device 5, changement 6 all are fixed on the slide plate 12, slide plate is connected with ball nut 14 by screw 13,9 of ball-screws link to each other with a pair of leading screw supporting mechanism 10 by rolling bearing, leading screw supporting mechanism 10 is fixed on the lathe bed 11 by bolt 13, leading screw 9 links to each other with stepping motor 8 by shaft coupling 16, stepping motor is fixed on the motor supporting seat 15, and motor supporting seat 15 is screwed on lathe bed 11.7a is a longitudinal section, and 7b is an end view.
This shows that the present invention has reached intended purposes.
Claims (2)
1. the control method that is shaped of space triangle symmetry R type power transformer iron core, it is characterized in that: it makes strip coil constant around the average feed speed v maintenance in a week with Frequency Converter Control mould revolution rotating speed, and it is to go to control any n layer rotational speed N by following formula
nRealize N
n=v/[2 π (r
0+ nk
t)], wherein, r
0Be the mean value of the initial radius of gyration, n is the number of plies of current winding shaping, k
tBe the equivalent depth of band, promptly consider because band injustice, the factor such as not tight of reeling are carried out revised thickness to former band; It goes to drive motion that the band of a center line fixing commutation, guiding centering, tight each device of the back of the body and removing to control to(for) the slide plate of the side-play amount measuring transducer of shaping band stack center line moves to the position of shaping band stack center line by the present position motion that promptly is shaped with stepper motor, it is to count P by the offset movement output control pulse that following formula goes to control any n week to realize P=[K
tTg (α)+(W
n-W
N-1)/2]/d, its condition is that the number of turns of current winding shaping is number of plies n greater than the number of turns n of the offset movement that begins to be shaped
0, wherein, K
tBe above-mentioned equivalent depth, α is the angle of core section oblique line, W
nBe the width when anterior layer, W
N-1Be the width of preceding one deck, d is a pulse equivalency; It removes to detect the size and Orientation that the band center line departs from the side-play amount of shaping band stack center line in real time with position detecting device in any winding process once, drive above-mentioned slide plate with above-mentioned stepper motor again the motion of promptly rectifying a deviation is corrected in the position of band center line, it is to remove control correction motion output umber of pulse P by following formula
1Realize P
1=(X
1-X
0)/d, wherein, d is above-mentioned pulse equivalency, X
1Be the side-play amount of current band center line, X
0Position for the band center last time measured.
2. the control method of space according to claim 1 triangle symmetry R type power transformer iron core winding shaping, it is characterized in that, described correction campaign output umber of pulse P1 obtains with following method: a pair of displacement transducer is fixed on the slide plate symmetrically, move with slide plate, the center line that guarantees guiding centering and above-mentioned offset measurement transducer simultaneously point-blank and with the coiling axis normal, in winding process, ceaselessly measure and calculate the side-play amount of band with respect to guiding mechanism, calculate each all mean deviation amount again, this side-play amount and building motion side-play amount algebraic addition and the result is converted into umber of pulse obtains, when just having begun to reel, next week drives moving of above-mentioned slide plate to realize the correction motion by above-mentioned stepping motor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02130844 CN1206675C (en) | 2002-10-11 | 2002-10-11 | Control method for winding shaping of space triangular symmetrical R type power transformer iron core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02130844 CN1206675C (en) | 2002-10-11 | 2002-10-11 | Control method for winding shaping of space triangular symmetrical R type power transformer iron core |
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| Publication Number | Publication Date |
|---|---|
| CN1414580A true CN1414580A (en) | 2003-04-30 |
| CN1206675C CN1206675C (en) | 2005-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290230A (en) * | 2011-04-28 | 2011-12-21 | 上海固缘电力科技有限公司 | Winding method for three-dimensional amorphous alloy transformer core |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103365241B (en) * | 2012-09-26 | 2016-06-15 | 上海埃斯凯变压器有限公司 | R type transformer core sawing sheet curve dynamic compesated control system and method |
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2002
- 2002-10-11 CN CN 02130844 patent/CN1206675C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290230A (en) * | 2011-04-28 | 2011-12-21 | 上海固缘电力科技有限公司 | Winding method for three-dimensional amorphous alloy transformer core |
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|---|---|
| CN1206675C (en) | 2005-06-15 |
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