CN205563167U - Ultrasonic power supply impedance match system and control system - Google Patents
Ultrasonic power supply impedance match system and control system Download PDFInfo
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- CN205563167U CN205563167U CN201620073869.3U CN201620073869U CN205563167U CN 205563167 U CN205563167 U CN 205563167U CN 201620073869 U CN201620073869 U CN 201620073869U CN 205563167 U CN205563167 U CN 205563167U
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Abstract
The utility model discloses an ultrasonic power supply impedance match system and control system, the impedance match system includes impedance match network and transducer equivalent network, a serial communication port, impedance matching network and ultrasonic wave owner coupled circuits, impedance matching network include by ultrasonic wave main circuit leakage inductance forms has inductance electrical characteristic's equivalent inductance le. Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a virtual inductance match pattern, the leakage inductance that exists during the make full use of impulse transformer coiling to it is right to ally oneself with certain building -out capacitor, and transducer and instrument head system carry out resonance and impedance match, reduce cost and the weight of complete machine and the energy consumption that the entity inductance generates heat that the entity matches the inductance, economizes the material consumption reduction.
Description
Technical field
This utility model relates to ultrasonic power field, is specially a kind of ultrasonic power impedance matching system and control system.
Background technology
The application of power ultrasonic is quite varied, utilize ultrasonic mechanism, cavitation, heat effect and chemical effect, ultra-sonic welded, boring, the pulverizing of solid, emulsifying, degassing, dedusting can be carried out, remove bird nest, cleaning, sterilizing, promotion chemical reaction and carry out biological study etc., be applied widely in each departments such as industry and mining, agricultural, medical treatment.
Ultrasonic generation system is made to be operated in the output state reaching optimal, it is necessary that the transducer in this ultrasonic generation system is operated in resonant frequency, it usually needs to use impedance matching to realize.
And the impedance matching making ultrasonic generation system be operated in resonant frequency typically requires interpolation impedance matching network and realizes, the impedance matching of current ultrasonic bonding power supply is to use the method for serial or parallel connection reactor and capacitor to realize power supply to mate with the frequency of transducer and tool heads thereof mostly.The existence of reactor adds the cost of ultrasonic power, weight and volume.
In view of drawbacks described above, this utility model creator obtains this utility model finally through research for a long time and practice.
Utility model content
For solving above-mentioned technological deficiency, the technical solution adopted in the utility model is, a kind of ultrasonic power impedance matching system is provided, including impedance matching network and transducer equivalent network, described impedance matching network couples with ultrasound wave main circuit, and described impedance matching network includes equivalent inductance Le with inductance electrology characteristic formed by described ultrasound wave main circuit leakage inductance.
It is also preferred that the left described impedance matching network includes compensating resistance C2, described transducer equivalent network includes direct capacitance C0 and motional impedance.
This utility model also provides for a kind of ultrasonic power control system, including a ultrasound wave main circuit, a ultrasonic control system, a tool heads system and described impedance matching system；
Described ultrasound wave main circuit by described impedance matching system realize with the impedance matching of described tool heads system be connected；
Described ultrasonic control system is connected its output signal of acquisition with described impedance matching system；
Described ultrasonic control system is connected with described ultrasound wave main circuit and controls its duty.
It is also preferred that the left described ultrasonic control system includes a sampling and modulate circuit, a comparison circuit, a transducer, a dsp controller, one drive circuit and an output interface circuit；
Described sampling and modulate circuit are respectively connected with described comparison circuit, described dsp controller, for obtaining its output signal from described impedance matching system；
Described dsp controller is respectively connected with described drive circuit, described transducer, described output interface circuit, for obtaining electric current, voltage waveform from described sampling and modulate circuit, process, and it being sent to described comparison circuit by described transducer, described dsp controller realizes the control to described ultrasound wave main circuit by controlling described drive circuit；
Described comparison circuit obtains power preset value, current phase value, voltage-phase value, and compared with the actual power value obtained, actual current phase value, virtual voltage phase value, and sending signal to described transducer to described dsp controller when there are differences, described comparison circuit is also connected with described output interface circuit.
It is also preferred that the left described dsp controller also includes capture module, for obtaining described sampling and the electrical parameter of modulate circuit acquisition.
It is also preferred that the left dsp controller is connected to human-computer interaction interface by UART interface circuit, control ultrasonic-frequency power supply control system for user.
It is also preferred that the left described drive circuit includes pwm circuit and IGBT drive circuit.Compared with prior art, the beneficial effects of the utility model are: this utility model uses virtual inductor match pattern, the leakage inductance existed when making full use of pulse transformer coiling, certain compensation electric capacity pair in parallel, transducer and tool heads system carry out resonance and impedance matching, the energy consumption that the cost of reduction Entities Matching inductance and the weight of complete machine and substantial inductive generate heat, saves material consumption reduction.
Accompanying drawing explanation
Fig. 1 is this utility model impedance matching system schematic diagram；
Fig. 2 is this utility model ultrasonic power structural representation；
Fig. 3 is this utility model ultrasonic control system schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, to this utility model, above-mentioned and other technical characteristic and advantage are described in more detail.
A kind of ultrasonic power impedance matching system described in the utility model.
Shown in Figure 1, Fig. 1 is this utility model ultrasonic power impedance matching system embodiment one structural representation, including impedance matching network and transducer equivalent network.
Described impedance matching network couples with ultrasound wave main circuit, ultrasound wave main circuit network at least includes a high frequency transformer T1, described impedance matching network includes inductance Le and compensates electric capacity C2, and described transducer equivalent network includes transducer static electric capacity C0, transducer dynamic capacity C1, transducer dynamic inductance L1 and transducer dynamic electric resistor R1.
It is here noted that be, in the present embodiment, the impedance operator of transducer is become direct capacitance C0 by equivalence, transducer dynamic capacity C1, transducer dynamic inductance L1 and transducer dynamic electric resistor R1 tetra-part, for system described in the utility model, and for the following described method of this utility model, not necessarily in strict accordance with so carrying out equivalence, but at least should include direct capacitance part (C0) and motional impedance part, in the embodiment illustrated in fig. 1, motional impedance part includes transducer dynamic capacity C1, transducer dynamic inductance L1 and transducer dynamic electric resistor R1.
Described ultrasound wave main circuit network, impedance matching network, transducer equivalent network are two-port network, and described ultrasound wave main circuit network cascades with impedance matching network, and described impedance matching network cascades with described transducer equivalent network.
Described impedance matching network includes inductance Le and compensates electric capacity C2, wherein, in the prior art, impedance matching network typically requires capacitor composition the most T-shaped various, the π type impedance matching networks of the inducer using entity and entity, the network impedance difference connected due to usual impedance matching network two ends is bigger, impedance matching network is generally the most all it is necessary to have the participation of inducer, the preparation principle of inducer is the winding of coil, and the restriction in this structure function makes inducer cannot break away from the problem bad with other circuit adaptabilities bulky, expensive.And in ultrasonic power field, equally existing this problem, the inducer in the impedance matching network of impedance matching is typically a bigger inducer, and this inducer will take bigger volume, brings bigger cost for product.
Ultrasonic power impedance matching network described in the utility model, and without substantial inductive device, but utilize in ultrasound wave main circuit network, transformator leakage inductance present in the winding process.Owing to the most basic principle of transformator is the coupling of coil, so the most all of magnetic line of force can enter secondary coil in the middle of the process of coil coupling, produce the electrical parameter characteristic being equivalent to inductance component performance, referred to as leakage inductance.The existence of leakage inductance is known in the art, common problem, and generally, those skilled in the art, for the process of leakage inductance, are to try to improve the performance of transformator, reduces as far as possible, eliminates leakage inductance.
Impedance matching network described in the utility model, including inductance Le, described inductance Le is transformer leakage inductance Le, is arranged such actually impedance matching network and does not comprise the inducer of entity, and the inductance parameters characteristic in circuit is generated by the leakage inductance equivalence in transformator.Compared with the universal impedance matching network of existing existence, impedance matching network provided by the utility model eliminates the key element of substantial inductive, and make use of and wished that the leakage inductance eliminated is as equivalent inductance by those skilled in the art for a long time, similar same energy is achieved not only by eliminating circuit element, and the customer service technology prejudice being present in for a long time in this area.
This utility model also provides for a kind of impedance matching methods.
Utilize the method that impedance matching system described in the utility model carries out impedance matching, including step:
S1: according to the motional impedance of transducer system, determine system resonance frequencies；
Transducer and the dynamic inductance of tool heads system, dynamic capacity determine resonant frequency f of transducers, i.e. pass through formula:
Can determine that this transducer and the series resonance frequency of tool heads system thereof, wherein, the L in formulad, CdIt is respectively induction reactance and the capacitive reactance of transducer system.In the embodiment shown in fig. 1, Ld=L1, Cd=C1.
S2: measure impedance matching network equivalent inductance Le；
After determining resonant frequency, determine the leakage inductance of transformator, i.e. impedance matching network equivalent inductance Le, can be measured by various inductance measurement equipment, such as LCR electric bridge equipment herein.
S3: determine the electric capacity that impedance matching needs；
Determine the system resonance frequencies f of transducersWith transformer leakage inductance Le, and after the induction reactance of impedance matching network, utilize formulaDetermine the capacitive reactance C of impedance matching system.
S4: measurement transducer direct capacitance；
Direct capacitance C0 of measurement transducer,
S5: determine that impedance matching network compensates electric capacity C2.
After determining direct capacitance C0 of the capacitive reactance C of described impedance matching system, transducer, according to formula C=C0+C2, determine the compensation electric capacity C2 of described impedance matching network.
Wherein, step S1, step S2, step S4 design measuring process, it can be with order change: both can the most all measure, it is also possible to measured before needing to use the step of this parameter.However it is necessary that and ensure before needs use this parameter, this parameter is the most measured good, and as the description that a kind of this method is general, the brief step of this method is described as:
Measurement transducer system dynamics capacitive reactance and induction reactance, determine transducer system resonant frequency；
Measuring transformer leakage inductance, determines impedance matching system capacitance；
Measurement transducer static system capacitive reactance, determines that impedance matching network compensates electric capacity.
This utility model also provides for a kind of ultrasonic power control system.
Shown in Figure 2, Fig. 2 is ultrasonic power control system Organization Chart described in the utility model.
Ultrasonic power control system described in the utility model includes ultrasound wave main circuit 1, ultrasonic control system 2, transducer and impedance matching system 3 and a tool heads system 4.
Described ultrasound wave main circuit 1, described transducer and impedance matching system 3 are sequentially connected with described tool heads system 4, described ultrasound wave main circuit 1 realizes impedance matching by described transducer and impedance matching system 3 with described tool heads system 4 and changes with energy, makes described tool heads system 4 smoothly complete work.
Wherein, described transducer and impedance matching system 3 i.e. structure shown in Fig. 1.
Described ultrasonic control system 2 one end obtains output signal from described transducer and impedance matching system 3, and carry out judging, processing, output feedback signal input controls the output of ultrasound wave main circuit to described ultrasound wave main circuit, so that control system described in the utility model realizes the feedback of a closed loop.
Shown in Figure 3, Fig. 3 is ultrasonic control system structure chart described in the utility model.
Described ultrasonic control system includes that a sampling and modulate circuit 201, comparison circuit 202, transducer 203, dsp controller 204, one drive circuit 205, output connect
Mouth circuit 206.
Described sampling and modulate circuit 201 are connected with described transducer and impedance matching system 3, concrete, it can obtain the electrical parameter at transducer equivalent network two ends, described electrical parameter includes but not limited to the waveform of electric current and voltage, and by the electrical parameter of described test by being sent to described comparison circuit 202；
The electrical parameter of test is sent in described dsp controller 204 by described sampling and modulate circuit 201 simultaneously, the described dsp controller 204 electric current to receiving, voltage waveform calculate, draw the electrology characteristic of electrical parameter, include but not limited to electric current, the product of voltage and the phase contrast of current/voltage.This electrical parameter is sent to described comparison circuit 202 by described dsp controller 204 by described transducer 203.
Prestore in described comparison circuit 202 the output preset value of whole ultrasonic power system, described comparison circuit 202 receives described electrical parameter and compares with preset value, if there is difference, then sending the signal to described output interface circuit 206, the signal that described comparison circuit 202 sends is transmitted to described dsp controller 204 by described output interface circuit.
Transducer 203 described in the present embodiment is digital to analog converter.
Described dsp controller 204, when described comparison circuit 202 decision circuitry is operated in non-default environment, will send control signal to described drive circuit 205, after drive circuit 205 receives control signal, be controlled ultrasound wave main circuit.
Such as, in the present embodiment, the IGBT inverter circuit being connected is controlled by the pattern that drive circuit 205 uses pwm circuit to drive with IGBT, described dsp controller 204 receives the signal of described comparison circuit 202, judge, when the output of current ultrasonic-frequency power supply is not inconsistent with predetermined power, to control the dutycycle of pwm circuit, and amplify through drive circuit, control full bridge inverter exports electric current and the increase of voltage or reduction, thus realizes the constant power output of ultrasonic power；
When the phase contrast of described current/voltage occurs deviation in described ultrasonic power work process, described dsp controller will regulate frequency and the phase place of PWM, thus realize the phase-locked output of ultrasonic power.
As the selection of a kind of improvement, described dsp controller 204 includes that CAP module, i.e. a capture module, described CAP module can obtain the electrical parameter that described Sampling Machine modulate circuit obtains, and the phase contrast of calculating current, voltage.
The described dsp controller of selection as a kind of improvement is connected to human-computer interaction interface by UART interface circuit, controls ultrasonic-frequency power supply control system for user.
Although this utility model being described in detail with reference to previous embodiment; for a person skilled in the art; technical scheme described in foregoing embodiments still can be modified by it; or wherein portion of techniques feature is carried out equivalent; all within spirit of the present utility model and principle; the any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (7)
1. a ultrasonic power impedance matching system, including impedance matching network and transducer equivalent network, it is characterized in that, described impedance matching network couples with ultrasound wave main circuit, and described impedance matching network includes equivalent inductance Le with inductance electrology characteristic formed by described ultrasound wave main circuit leakage inductance.
2. ultrasonic power impedance matching system as claimed in claim 1, it is characterised in that described impedance matching network includes compensating resistance C2, and described transducer equivalent network includes direct capacitance C0 and motional impedance.
3. a ultrasonic power control system, it is characterised in that include a ultrasound wave main circuit, a ultrasonic control system, a tool heads system and impedance matching system as claimed in claim 1 or 2；
Described ultrasound wave main circuit by described impedance matching system realize with the impedance matching of described tool heads system be connected；
Described ultrasonic control system is connected its output signal of acquisition with described impedance matching system；
Described ultrasonic control system is connected with described ultrasound wave main circuit and controls its duty.
4. ultrasonic power control system as claimed in claim 3, it is characterised in that described ultrasonic control system includes a sampling and modulate circuit, a comparison circuit, a transducer, a dsp controller, one drive circuit and an output interface circuit；
Described sampling and modulate circuit are respectively connected with described comparison circuit, described dsp controller, for obtaining its output signal from described impedance matching system；
Described dsp controller is respectively connected with described drive circuit, described transducer, described output interface circuit, for obtaining electric current, voltage waveform from described sampling and modulate circuit, process, and it being sent to described comparison circuit by described transducer, described dsp controller realizes the control to described ultrasound wave main circuit by controlling described drive circuit；
Described comparison circuit obtains power preset value, current phase value, voltage-phase value, and compared with the actual power value obtained, actual current phase value, virtual voltage phase value, and sending signal to described transducer to described dsp controller when there are differences, described comparison circuit is also connected with described output interface circuit.
5. ultrasonic power control system as claimed in claim 4, it is characterised in that described dsp controller also includes capture module, for obtaining described sampling and the electrical parameter of modulate circuit acquisition.
6. ultrasonic power control system as claimed in claim 4, it is characterised in that dsp controller is connected to human-computer interaction interface by UART interface circuit, controls ultrasonic-frequency power supply control system for user.
7. ultrasonic power control system as claimed in claim 4, it is characterised in that described drive circuit includes pwm circuit and IGBT drive circuit.
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| CN201620073869.3U CN205563167U (en) | 2016-01-25 | 2016-01-25 | Ultrasonic power supply impedance match system and control system |
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| CN201620073869.3U CN205563167U (en) | 2016-01-25 | 2016-01-25 | Ultrasonic power supply impedance match system and control system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105717831A (en) * | 2016-01-25 | 2016-06-29 | 深圳市德知拓电源技术有限公司 | Impedance matching system and method and control system of supersonic power supply |
| CN106725741A (en) * | 2017-02-28 | 2017-05-31 | 重庆西山科技股份有限公司 | The sampling apparatus and ultrasonic surgical systems of ultrasonic transducer |
| CN108288961A (en) * | 2018-01-11 | 2018-07-17 | 福建星海通信科技有限公司 | A kind of low frequency, broadband, high-power underwater sound matching network circuit |
| CN108882108A (en) * | 2018-07-05 | 2018-11-23 | 湖南大学 | It is applicable in the impedance matching system and its matching process of Yu Haiyang communication electroacoustic transducer |
| CN110912534A (en) * | 2019-12-12 | 2020-03-24 | 中国科学院地质与地球物理研究所 | Modular design method and module for acoustic logging broadband impedance matching transformer |
| CN112379175A (en) * | 2020-11-03 | 2021-02-19 | 珠海泰坦新动力电子有限公司 | Power supply reactance test circuit, device and power supply reactance self-adaption matching device |
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2016
- 2016-01-25 CN CN201620073869.3U patent/CN205563167U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717831A (en) * | 2016-01-25 | 2016-06-29 | 深圳市德知拓电源技术有限公司 | Impedance matching system and method and control system of supersonic power supply |
| CN106725741A (en) * | 2017-02-28 | 2017-05-31 | 重庆西山科技股份有限公司 | The sampling apparatus and ultrasonic surgical systems of ultrasonic transducer |
| CN106725741B (en) * | 2017-02-28 | 2019-08-27 | 重庆西山科技股份有限公司 | The sampling apparatus and ultrasonic surgical systems of ultrasonic transducer |
| CN108288961A (en) * | 2018-01-11 | 2018-07-17 | 福建星海通信科技有限公司 | A kind of low frequency, broadband, high-power underwater sound matching network circuit |
| CN108882108A (en) * | 2018-07-05 | 2018-11-23 | 湖南大学 | It is applicable in the impedance matching system and its matching process of Yu Haiyang communication electroacoustic transducer |
| CN110912534A (en) * | 2019-12-12 | 2020-03-24 | 中国科学院地质与地球物理研究所 | Modular design method and module for acoustic logging broadband impedance matching transformer |
| US11018648B1 (en) | 2019-12-12 | 2021-05-25 | Instituute Of Geology And Geophysics, Chinese Academy Of Sciences | Sonic logging broadband impedance matching transformer modular design method and module |
| CN112379175A (en) * | 2020-11-03 | 2021-02-19 | 珠海泰坦新动力电子有限公司 | Power supply reactance test circuit, device and power supply reactance self-adaption matching device |
| CN112379175B (en) * | 2020-11-03 | 2021-11-19 | 珠海泰坦新动力电子有限公司 | Power supply reactance test circuit, device and power supply reactance self-adaption matching device |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160907 Termination date: 20210125 |