CN108941859A - Exchange submerged-arc welding based on recursive algorithm exports current compensation method - Google Patents
Exchange submerged-arc welding based on recursive algorithm exports current compensation method Download PDFInfo
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- CN108941859A CN108941859A CN201810835266.6A CN201810835266A CN108941859A CN 108941859 A CN108941859 A CN 108941859A CN 201810835266 A CN201810835266 A CN 201810835266A CN 108941859 A CN108941859 A CN 108941859A
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- output
- exchange
- monocycle
- current
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/18—Submerged-arc welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/09—Arrangements or circuits for arc welding with pulsed current or voltage
- B23K9/091—Arrangements or circuits for arc welding with pulsed current or voltage characterised by the circuits
- B23K9/092—Arrangements or circuits for arc welding with pulsed current or voltage characterised by the circuits characterised by the shape of the pulses produced
Abstract
The invention discloses the exchange submerged-arc weldings based on recursive algorithm to export current compensation method, comprising the following steps: A, the building compensation recursive algorithm in the embedded system of control submerged arc welding machine electric current output；B, starting compensation recursive algorithm, in systems construct half wave pattern of direct current output monocycle and exchange export half wave pattern of monocycle；C, the area of half wave pattern of direct current output monocycle is calculated, and using direct current output monocycle half-wave model area as reference, under the conditions of real-time alternating current rises or falls slope, ac output current peak value is calculated, so that the area of exchange output half wave pattern of monocycle is equal to the area of half wave pattern of direct current output monocycle；D, based on exchange output half wave pattern of monocycle, continuous exchange output wave is constructed, and exchange electricity output is carried out according to the continuous output wave that exchanges.It is in application, can effectively solve the problems, such as that output alternating current absolute average caused by rising or falling slope adjustment because of exchange is inconsistent.
Description
Technical field
The present invention relates to digitlization power technique fields, and in particular to the exchange submerged-arc welding based on recursive algorithm exports electric current
Compensation method.
Background technique
Submerged arc welding is as a kind of traditional welding manner, and still based on silicon-controlled, control is adopted for existing exchange submerged-arc welding
It is controlled with simulation, does not meet research.New is digital control, realizes multi-functional control, multi-parameter wide scope is adjustable.It is logical
Welding frequency is overregulated, control waveform balance, direct current offset parameter adjust electric current and rise or fall slope, to realize that client needs
The welding penetration asked, control face of weld molding, has become inexorable trend.Exchange submerged arc welding electric power be chiefly used in Double Wire Welding or
Multifibres weldering, needs just to be able to achieve the welding procedure comparison of different parameters in the case where identical average absolute electric current, therefore is adjusting
It saves a-c cycle, waveform balance, direct current offset and to keep the welding of output absolutely flat when rising or falling these parameters of slope
Equal electric current is consistent, how to guarantee to export the absolute average consistency of electric current just at need solve the problems, such as.
Summary of the invention
The present invention exports current compensation in view of the deficienciess of the prior art, providing the exchange submerged-arc welding based on recursive algorithm
Method, in application, it is absolutely average effectively to solve output alternating current caused by rising or falling slope adjustment because of exchange
It is worth inconsistent problem.
The invention is realized by the following technical scheme:
Exchange submerged-arc welding based on recursive algorithm exports current compensation method, comprising the following steps:
A, the building compensation recursive algorithm in the embedded system of control submerged arc welding machine electric current output；
B, starting compensation recursive algorithm, in systems construct half wave pattern of direct current output monocycle and exchange export the monocycle
Half wave pattern, half wave pattern of direct current output monocycle are rectangle, and width is average anode current value, a length of monocycle half-wave DC
It holds time, exchange output half wave pattern of monocycle is isosceles trapezoid, and a length of monocycle half-wave of isosceles trapezoid bottom exchanges dimension
It holds the time, the tangent value at isosceles trapezoid base angle is that alternating current rises or falls slope, and a height of exchange of isosceles trapezoid exports electricity
Stream peak value, a length of ac output current peak value at bottom is held time in isosceles trapezoid；
C, the area of half wave pattern of direct current output monocycle is calculated, and according to compensation recursive algorithm with direct current output single-revolution
The area of half wave pattern of phase is reference, and under the conditions of real-time alternating current rises or falls slope, exchange output is calculated
Current peak, so that the area of exchange output half wave pattern of monocycle is equal to the area of half wave pattern of direct current output monocycle；
D, for system based on determining the exchange of ac output current peak value and export half wave pattern of monocycle, building is continuous
Exchange output wave, and control submerged arc welding machine and exchange electricity output carried out according to continuous exchange output wave.
Preferably, the application flow for compensating recursive algorithm includes:
Step 1: being initialized to the recursion moment, X=H, t=1；
Step 2: calculating S1 according to current acquisition given value L, H, tanA, constructing S2 (X)；
Step 3: comparing the difference DELTA S after S1 and S2 (X) substitution variable X current value；
Step 4: if value of the Δ S greater than zero, X adds t, and repetition third step；
Step 5: the X value needed terminates algorithm if Δ S is equal to zero；
The meaning of above-mentioned each symbol:
L is the length of rectangle and the length of isosceles trapezoid bottom, H are the width of rectangle, and A is the base angle of isosceles trapezoid, and tanA is
Alternating current rises or falls slope, and t is the step-length of current compensation, and X is the height of isosceles trapezoid, and S1 is the area of rectangle, S2 (X)
For function of the area about high X of isosceles trapezoid.
Preferably, the compensation recursive algorithm is specific as follows:
S1=L*H；
S2 (X)=(L+M) * X/2；
TanA=X/ [(L-M)/2]；
Wherein M is the length at bottom in isosceles trapezoid, and L, M, A and t are it is known that the initial value of X is H, by, to compensate increase X, being made with t
The value Step wise approximation S1 of S2 (X) is obtained, until being equal to S1, to acquire the value of X.
Preferably, the value range that the alternating current rises or falls slope tanA must meet when ac output current peak
When value holds time M equal to zero, the X value of needs is had been achieved with, and terminate algorithm.
Preferably, the submerged arc welding machine is automatic submerged arc welding machine.
The present invention has the advantage that and the utility model has the advantages that
1, the present invention is based on the exchange submerged-arc weldings of recursive algorithm to export current compensation method, can effectively solve because in exchange
It rises or descending slope adjusts the inconsistent problem of caused output alternating current absolute average.
2, the present invention is based on the exchange submerged-arc weldings of recursive algorithm to export current compensation method, convenient for when exchange submerged arc welding pairs
Than the welding penetration and appearance of weld under different alternating-current parameters.
3, the present invention is based on the exchange submerged-arc weldings of recursive algorithm to export current compensation method, and single argument method is easy to use to adjust
Welding condition.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is compensation recursive algorithm flow chart of the invention；
Fig. 2 be half wave pattern of direct current output monocycle of the invention and exchange export monocycle half-wave model schematic；
Fig. 3 is the embodiment of the present invention application timing diagram.
Each symbol and label and title in attached drawing:
The length of length and the isosceles trapezoid bottom of L- rectangle, the width of H- rectangle, the base angle of A- isosceles trapezoid, tanA- exchange
Electric current rises or falls slope, the step-length of t- current compensation, the height of X- isosceles trapezoid, the area of S1- rectangle, S2 (X)-isosceles ladder
Function of the area of shape about high X, the length at bottom in M- isosceles trapezoid.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Embodiment
As shown in Figure 1, 2, the exchange submerged-arc welding based on recursive algorithm exports current compensation method, comprising the following steps:
A, the building compensation recursive algorithm in the embedded system of control submerged arc welding machine electric current output；
B, starting compensation recursive algorithm, in systems construct half wave pattern of direct current output monocycle and exchange export the monocycle
Half wave pattern, half wave pattern of direct current output monocycle are rectangle, a height of average anode current value, a length of monocycle half-wave DC
It holds time, exchange output half wave pattern of monocycle is isosceles trapezoid, and a length of monocycle half-wave of isosceles trapezoid bottom exchanges dimension
It holds the time, the tangent value at isosceles trapezoid base angle is that alternating current rises or falls slope, and a height of exchange of isosceles trapezoid exports electricity
Stream peak value, a length of ac output current peak value at bottom is held time in isosceles trapezoid；
C, the area of half wave pattern of direct current output monocycle is calculated, and according to compensation recursive algorithm with direct current output single-revolution
The area of half wave pattern of phase is reference, and under the conditions of real-time alternating current rises or falls slope, exchange output is calculated
Current peak, so that the area of exchange output half wave pattern of monocycle is equal to the area of half wave pattern of direct current output monocycle；
D, for system based on determining the exchange of ac output current peak value and export half wave pattern of monocycle, building is continuous
Exchange output wave, and control submerged arc welding machine and exchange electricity output carried out according to continuous exchange output wave.
Compensation recursive algorithm application flow include:
Step 1: being initialized to the recursion moment, X=H, t=1；
Step 2: calculating S1 according to current acquisition given value L, H, tanA, constructing S2 (X)；
Step 3: comparing the difference DELTA S after S1 and S2 (X) substitution variable X current value；
Step 4: if value of the Δ S greater than zero, X adds t, and repetition third step；
Step 5: the X value needed terminates algorithm if Δ S is equal to zero；
The meaning of above-mentioned each symbol:
L is the length of rectangle and the length of isosceles trapezoid bottom, H are the width of rectangle, and A is the base angle of isosceles trapezoid, and tanA is
Alternating current rises or falls slope, and t is the step-length of current compensation, and X is the height of isosceles trapezoid, and S1 is the area of rectangle, S2 (X)
For function of the area about high X of isosceles trapezoid.
The compensation recursive algorithm is specific as follows:
S1=L*H；
S2 (X)=(L+M) * X/2；
TanA=X/ [(L-M)/2]；
Wherein M is the length at bottom in isosceles trapezoid, and L, M, A and t are it is known that the initial value of X is H, by, to compensate increase X, being made with t
The value Step wise approximation S1 of S2 (X) is obtained, until being equal to S1, to acquire the value of X.
The value range that the alternating current rises or falls slope tanA must meet when ac output current peak value maintains
When time M is equal to zero, the X value of needs is had been achieved with, and terminate algorithm.
As shown in figure 3, in a-c cycle 20Hz~100Hz, waveform balance 25%~75%, direct current offset 25%~75%
In the case where, it adjusts exchange and rises or falls slope, submerged arc welding machine output alternating current absolute average is consistent, easily compares
In the welding penetration and appearance of weld of different alternating-current parameters, it is conducive to welding procedure and adjusts.
Different L, M, A and t values, the monocycle of the AC wave shape after waveform balance, direct current offset are taken according to above-mentioned steps
The absolute value of half-wave current average value be equal to it is identical to constant current when monocycle semi-wave DC value (error is no more than ±
t)。
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (5)
1. the exchange submerged-arc welding based on recursive algorithm exports current compensation method, which comprises the following steps:
A, the building compensation recursive algorithm in the embedded system of control submerged arc welding machine electric current output；
B, starting compensation recursive algorithm, in systems construct half wave pattern of direct current output monocycle and exchange export monocycle half-wave
Model, half wave pattern of direct current output monocycle are rectangle, and width is average anode current value, and a length of monocycle half-wave DC maintains
Time, exchange output half wave pattern of monocycle is isosceles trapezoid, when a length of monocycle half-wave exchange of isosceles trapezoid bottom maintains
Between, the tangent value at isosceles trapezoid base angle is that alternating current rises or falls slope, a height of ac output current peak of isosceles trapezoid
It is worth, a length of ac output current peak value at bottom is held time in isosceles trapezoid；
C, the area of half wave pattern of direct current output monocycle is calculated, and according to compensation recursive algorithm with the direct current output monocycle half
The area of wave pattern is that ac output current is calculated under the conditions of real-time alternating current rises or falls slope in reference
Peak value, so that the area of exchange output half wave pattern of monocycle is equal to the area of half wave pattern of direct current output monocycle；
D, system constructs continuous hand over based on determining the exchange of ac output current peak value and export half wave pattern of monocycle
Output wave is flowed, and controls submerged arc welding machine and exchange electricity output is carried out according to continuous exchange output wave.
2. the exchange submerged-arc welding according to claim 1 based on recursive algorithm exports current compensation method, which is characterized in that
Compensation recursive algorithm application flow include:
Step 1: being initialized to the recursion moment, X=H, t=1；
Step 2: calculating S1 according to current acquisition given value L, H, tanA, constructing S2 (X)；
Step 3: comparing the difference DELTA S after S1 and S2 (X) substitution variable X current value；
Step 4: if value of the Δ S greater than zero, X adds t, and repetition third step；
Step 5: the X value needed terminates algorithm if Δ S is equal to zero；
The meaning of above-mentioned each symbol:
L is the length of rectangle and the length of isosceles trapezoid bottom, and H is the width of rectangle, and A is the base angle of isosceles trapezoid, and tanA is exchange
Electric current rises or falls slope, and t is the step-length of current compensation, and X is the height of isosceles trapezoid, and S1 is the area of rectangle, and S2 (X) is etc.
Function of the trapezoidal area of waist about high X.
3. the exchange submerged-arc welding according to claim 1 or 2 based on recursive algorithm exports current compensation method, feature exists
In the compensation recursive algorithm is specific as follows:
S1=L*H；
S2 (X)=(L+M) * X/2；
TanA=X/ [(L-M)/2]；
Wherein M is the length at bottom in isosceles trapezoid, and L, M, A and t are it is known that the initial value of X is H, by being that compensation increases X with t, so that S2
(X) value Step wise approximation S1, until being equal to S1, to acquire the value of X.
4. the exchange submerged-arc welding according to claim 2 based on recursive algorithm exports current compensation method, which is characterized in that
The value range that the alternating current rises or falls slope tanA must meet when the ac output current peak value M that holds time is equal to
When zero, the X value of needs is had been achieved with, and terminates algorithm.
5. the exchange submerged-arc welding according to claim 1 based on recursive algorithm exports current compensation method, which is characterized in that
The submerged arc welding machine is automatic submerged arc welding machine.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022018620A1 (en) * | 2020-07-21 | 2022-01-27 | Esab Ab | Balance and offset in adaptive submerged arc welding |
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| CN101564784A (en) * | 2008-04-24 | 2009-10-28 | 株式会社大亨 | Pulse electric arc welding output and control method |
| CN101295921A (en) * | 2008-06-05 | 2008-10-29 | 上海交通大学 | Current peak controlling double-trapezoidal wave compensation method of three-power level DC boosting converter |
| CN101777823A (en) * | 2009-12-31 | 2010-07-14 | 杭州凯尔达电焊机有限公司 | Slope compensation device of peak-current mode inverter welding power source |
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| WO2022018620A1 (en) * | 2020-07-21 | 2022-01-27 | Esab Ab | Balance and offset in adaptive submerged arc welding |
| US11919110B2 (en) | 2020-07-21 | 2024-03-05 | Esab Ab | Balance and offset in adaptive submerged arc welding |
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