CN105033779A - Ultrasonic processing system dynamic tracking coupling device - Google Patents
Ultrasonic processing system dynamic tracking coupling device Download PDFInfo
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- CN105033779A CN105033779A CN201410442590.3A CN201410442590A CN105033779A CN 105033779 A CN105033779 A CN 105033779A CN 201410442590 A CN201410442590 A CN 201410442590A CN 105033779 A CN105033779 A CN 105033779A
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Abstract
The invention discloses an ultrasonic processing system dynamic tracking coupling device comprising a main control chip, and a dual-winding transformer; one end of a L1 coil of the dual-winding transformer is connected with an ultrasonic output end, and the other end of the L1 coil is connected in parallel with an inductance Lp of an adjustable inductor; one end of a L2 coil of the dual-winding transformer is connected with one emitter electrode of a compound triode formed by two triodes, and connected with a pin of the main control chip, and the other end of the L2 coil is connected with another emitter electrode of the compound triode; a base electrode of the compound triode is connected with an adjustable inductance core of the adjustable inductor; the ultrasonic processing system dynamic tracking coupling device also comprises a piezoelectric ceramics device PZT connected in series with an inductance Ls of an adjustable inductor; two ends of the inductance Ls are connected in series with a resistor R1 and a resistor R2; a connecting point of the R1 and R2 is connected with the main control chip through an operational amplifier. The ultrasonic processing system dynamic tracking coupling device combines with a frequency tracking algorithm to jointly realize dynamic coupling of the ultrasonic processing system.
Description
Technical field
The present invention relates to ultrasonic wave added processing technique field, particularly a kind of dynamic tracking and matching of Ultrasonic machining system of the Dynamic Matching based on magnetic flux
device.
Background technology
In existing Ultrasonic machining system, need for the Circuit Matching under static conditions, in process, bistrique wearing and tearing, heating often cause transducer inner parameter to change, frequency shifts, even if adopt advanced frequency tracking method also can only ensure that it traces into resonant frequency, whole energy converting system resonance can not be made.Therefore reactive power increases, and transducer both end voltage current and phase difference is also non-vanishing, exports vibration and reduces, greatly affect the processing effect of product.
Summary of the invention
The object of the invention is to: for the above-mentioned defect for existing technology, adopt based on flux controlled controllable impedance technology, realizing mating the stepless adjustable of inductance value, by changing automatically controlled parameter
dynamic adjustments inductance size, and adopt Hysteresis Current tracking, realize secondary side current and follow the tracks of primary side instruction current.Because the complexity of system model, nonlinear problem are given prominence to, finally adopt fuzzy neural network algorithm to carry out dynamic prediction to coupling inductance value, in conjunction with frequency tracking algorithm, jointly realize the Dynamic Matching of Ultrasonic machining system.
A kind of dynamic tracking and matching of Ultrasonic machining system is provided
device, comprise main control chip, one two-winding transformer, one end of the L1 coil of described two-winding transformer is connected with ultrasonic output, the other end of the L1 coil of described two-winding transformer and the inductance L p of a variable inductor are connected in parallel, one of them emitter stage that one end of the L2 coil of described two-winding transformer is connected to a compound transistor connected and composed by two triodes is connected with the pin of described main control chip, the other end of L2 coil is connected with another emitter stage of described compound transistor, the base stage of described compound transistor is connected with the controllable impedance core of described variable inductor, also comprise a piezoelectric ceramic devices PZT, the inductance L s of described piezoelectric ceramic devices PZT and described variable inductor is connected in series, resistance R1 is also serially connected with at the two ends of described inductance L s, R2, the tie point of resistance R1, R2 is connected with described main control chip by an operational amplifier.
The present invention is directed to the Circuit Matching under static conditions, in process, bistrique wearing and tearing, heating often cause transducer inner parameter to change, frequency shifts, even if adopt advanced frequency tracking method also can only ensure that it traces into resonant frequency, can not make whole energy converting system resonance.Therefore reactive power increases, and transducer both end voltage current and phase difference is also non-vanishing, exports vibration and reduces, greatly affect the processing effect of product.For this situation, adopting based on flux controlled controllable impedance technology, realizing mating the stepless adjustable of inductance value, by changing automatically controlled parameter
dynamic adjustments inductance size, and adopt Hysteresis Current tracking, realize secondary side current and follow the tracks of primary side instruction current.
Because the complexity of system model, nonlinear problem are given prominence to, finally adopt fuzzy neural network algorithm to carry out dynamic prediction to coupling inductance value, in conjunction with frequency tracking algorithm, jointly realize the Dynamic Matching of Ultrasonic machining system.
Transducer parameters is subject to the impact of several factors, as processed the sudden change of load, these all can cause the mechanical intrinsic frequency of transducer to drift about, and it is crucial that, these parameters can not on-line testing, brings serious difficulty to coupling, and coupling work is with very large empirical, will realize ultrasonic-frequency power supply can Auto-matching for this reason, must find a kind of algorithm that automatically can regulate inductance size according to expertise.Here will introduce fuzzy neural network algorithm, accurate test model can not relied on, be set up the graph of a relation of phase difference and dynamic inductance size by Fuzzy Neural-network Control algorithm, reach ultrasonic system Dynamic Matching effect.
Gradient descent algorithm, it can adjust the size of parameter fast, containing the gradient function about weights inside error function, upgrades weights, then by the continuous training of sample, weights are constantly updated with this.
Can obtain Output rusults through above-mentioned fuzzy neutral net is a series of fuzzy quantity, if directly act on target, then generation is controlled chaotic, therefore first must be translated into accurate controlled quentity controlled variable by certain way and just can act on actual Controlling model, namely controlled quentity controlled variable sharpening process.
Accompanying drawing explanation
Fig. 1 is the electrical schematic diagram of two-winding transformer.
fig. 2 is Z in two-winding transformer shown in Fig. 1
aX
with the graph of relation of α.
Fig. 3 is hysteresis loop tracking curve map.
fig. 4 is current tracking schematic diagram.
fig. 5 is circuit theory diagrams of the present invention.
Detailed description of the invention
As shown in Figure 5, a kind of dynamic tracking and matching of Ultrasonic machining system is designed
device, comprise main control chip, one two-winding transformer, one end of the L1 coil of described two-winding transformer is connected with ultrasonic output, the other end of the L1 coil of described two-winding transformer and the inductance L p of a variable inductor are connected in parallel, one of them emitter stage that one end of the L2 coil of described two-winding transformer is connected to a compound transistor connected and composed by two triodes is connected with the pin of described main control chip, the other end of L2 coil is connected with another emitter stage of described compound transistor, the base stage of described compound transistor is connected with the controllable impedance core of described variable inductor, also comprise a piezoelectric ceramic devices PZT, the inductance L s of described piezoelectric ceramic devices PZT and described variable inductor is connected in series, resistance R1 is also serially connected with at the two ends of described inductance L s, R2, the tie point of resistance R1, R2 is connected with described main control chip by an operational amplifier.
be illustrated in figure 1 two-winding transformer, wherein same iron core be wound with electric current, voltage in the electric current of first siding ring winding AX and second siding ring winding ax, i1 and u1 mono-former limit winding AX, voltage, i2 and u2 mono-auxiliary winding α x.When core loss can be ignored, suppose that the equivalent internal resistance of AX and α x represents with r1 and r2; Wherein α represents flux compensation coefficient, and the equivalent reactance that can be obtained primary side by a series of conversion is: Z
aX
=Z
i
+ (1-α) ZM is wherein: Z
i mono-
the leakage impedance of secondary lateral coil is definite value; Z
m
for the excitation impedance of transformer, it is also certain value; Can find out, as long as change the size of penalty coefficient α, just can the size of change equivalent reactance of continuously smooth.From realizing the electrodeless adjustable of inductance, the fundametal compoment of generation is few, generally, the value 0 to 1 of α, or-l is to 0.
Circuit Matching in a static condition, in process, bistrique wearing and tearing, heating often cause transducer inner parameter to change, frequency shifts, even if adopt advanced frequency tracking method also can only ensure that it traces into resonant frequency, can not make whole energy converting system resonance.Therefore reactive power increases, and transducer both end voltage current and phase difference is also non-vanishing, exports vibration and reduces, greatly affect the processing effect of product.For this situation, adopting based on flux controlled controllable impedance technology, realizing mating the stepless adjustable of inductance value, by changing automatically controlled parameter
dynamic adjustments inductance size, and adopt Hysteresis Current tracking, realize secondary side current and follow the tracks of primary side instruction current.
Because the complexity of system model, nonlinear problem are given prominence to, finally adopt fuzzy neural network algorithm to carry out dynamic prediction to coupling inductance value, in conjunction with frequency tracking algorithm, jointly realize the Dynamic Matching of Ultrasonic machining system.
Transducer parameters is subject to the impact of several factors, as processed the sudden change of load, these all can cause the mechanical intrinsic frequency of transducer to drift about, and it is crucial that, these parameters can not on-line testing, brings serious difficulty to coupling, and coupling work is with very large empirical, will realize ultrasonic-frequency power supply can Auto-matching for this reason, must find a kind of algorithm that automatically can regulate inductance size according to expertise.Here will introduce fuzzy neural network algorithm, accurate test model can not relied on, be set up the graph of a relation of phase difference and dynamic inductance size by Fuzzy Neural-network Control algorithm, reach ultrasonic system Dynamic Matching effect.
Gradient descent algorithm, it can adjust the size of parameter fast, containing the gradient function about weights inside error function, upgrades weights, then by the continuous training of sample, weights are constantly updated with this.
Can obtain Output rusults through above-mentioned fuzzy neutral net is a series of fuzzy quantity, if directly act on target, then generation is controlled chaotic, therefore first must be translated into accurate controlled quentity controlled variable by certain way and just can act on actual Controlling model, namely controlled quentity controlled variable sharpening process.
Claims (3)
1. the dynamic tracking and matching device of a Ultrasonic machining system, it is characterized in that: comprise main control chip, one two-winding transformer, one end of L1 coil of described two-winding transformer is connected with one end of ultrasonic transducer, the other end of the L1 coil of described two-winding transformer and the inductance L p of a variable inductor are connected in parallel, one of them emitter stage that one end of the L2 coil of described two-winding transformer is connected to a compound transistor connected and composed by two triodes is connected with the pin of described main control chip, the other end of L2 coil is connected with another emitter stage of described compound transistor, the base stage of described compound transistor is connected with the controllable impedance core of described variable inductor, also comprise a piezoelectric ceramic devices PZT, the inductance L s of described piezoelectric ceramic devices PZT and described variable inductor is connected in series, resistance R1 is also serially connected with at the two ends of described inductance L s, R2, the tie point of resistance R1, R2 is connected with described main control chip by an operational amplifier, the other end of described ultrasonic transducer is connected with the pin of in described main control chip.
2. the dynamic tracking and matching device of a kind of Ultrasonic machining system according to claim 1, is characterized in that: at the two ends of described inductance L p and inductance L s also respectively and be connected to a capacitor.
3. the dynamic tracking and matching device of a kind of Ultrasonic machining system according to claim 1, is characterized in that: be also serially connected with two resistance at described ultrasonic transducer, and the tie point of described two resistance is connected with the pin of in described main control chip.
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| CN201410442590.3A CN105033779B (en) | 2014-09-01 | 2014-09-01 | The dynamic tracking and matching device of Ultrasonic machining system |
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| CN201410442590.3A CN105033779B (en) | 2014-09-01 | 2014-09-01 | The dynamic tracking and matching device of Ultrasonic machining system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106357149A (en) * | 2016-11-04 | 2017-01-25 | 哈尔滨工业大学深圳研究生院 | Automatic impedance matching ultrasonic circuit driver and automatic dynamic matching method thereof |
| CN110354407A (en) * | 2019-05-30 | 2019-10-22 | 哈尔滨工业大学（深圳） | Physical therapy drive system and its driving method based on high-frequency ultrasonic |
| CN111481842A (en) * | 2020-04-21 | 2020-08-04 | 重庆邮电大学 | Wearable ultrasonic therapy appearance based on developments match |
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| JPS6458464A (en) * | 1987-08-25 | 1989-03-06 | Cho Onpa Kogyo Co | Supersonic wave attachment |
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| WO2010076230A1 (en) * | 2009-01-05 | 2010-07-08 | Robert Bosch Gmbh | Handheld electric machine tool |
| CN101867295A (en) * | 2010-03-16 | 2010-10-20 | 成都芯源系统有限公司 | Circuit and control method |
| CN102034345A (en) * | 2010-12-01 | 2011-04-27 | 浙江正泰仪器仪表有限责任公司 | Twisted pair carrier communication circuit for automatic meter reading system and method thereof |
| CN202021506U (en) * | 2010-08-31 | 2011-11-02 | 宁波职业技术学院 | Magnetic-liquid magnetostriction ultrasonic vibration finishing processing device |
| WO2014111973A1 (en) * | 2013-01-16 | 2014-07-24 | 三重電子株式会社 | Machining device |
-
2014
- 2014-09-01 CN CN201410442590.3A patent/CN105033779B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6458464A (en) * | 1987-08-25 | 1989-03-06 | Cho Onpa Kogyo Co | Supersonic wave attachment |
| CN101226411A (en) * | 2008-01-22 | 2008-07-23 | 佛山市顺德区瑞德电子实业有限公司 | Power consumption measuring and control method for sound system switch power source as well as special device thereof |
| WO2010076230A1 (en) * | 2009-01-05 | 2010-07-08 | Robert Bosch Gmbh | Handheld electric machine tool |
| CN101483353A (en) * | 2009-02-05 | 2009-07-15 | 中国航天时代电子公司第七七一研究所 | Buck type auxiliary electric power controlled by PFM |
| CN101867295A (en) * | 2010-03-16 | 2010-10-20 | 成都芯源系统有限公司 | Circuit and control method |
| CN202021506U (en) * | 2010-08-31 | 2011-11-02 | 宁波职业技术学院 | Magnetic-liquid magnetostriction ultrasonic vibration finishing processing device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106357149A (en) * | 2016-11-04 | 2017-01-25 | 哈尔滨工业大学深圳研究生院 | Automatic impedance matching ultrasonic circuit driver and automatic dynamic matching method thereof |
| CN110354407A (en) * | 2019-05-30 | 2019-10-22 | 哈尔滨工业大学（深圳） | Physical therapy drive system and its driving method based on high-frequency ultrasonic |
| CN111481842A (en) * | 2020-04-21 | 2020-08-04 | 重庆邮电大学 | Wearable ultrasonic therapy appearance based on developments match |
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| CN105033779B (en) | 2018-01-30 |
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