CN101795078A - Ultrasonic power driving power supply with novel topological structure - Google Patents
Ultrasonic power driving power supply with novel topological structure Download PDFInfo
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Abstract
The invention discloses an ultrasonic power driving power supply with a novel topological structure and solves the problem that the conventional ultrasonic power driving power supply does not adapt to the broad-band work. The power supply system adopts a two-stage transformation structure, i.e. a DC-DC and a DC-AC. The preceding stage DC-DC concretely comprises two parts, i.e. low-voltage direct current DC-AC inversion and high-frequency high-voltage rectification. The inversion part adopts a push-pull topological structure and a fixed frequency PWM control mode, controls turn-on and turn-off of two power MOSFET tubes and inverts the direct current into a square wave alternating current to be boosted and output. The high-frequency high-voltage alternating current is rectified into a high-voltage direct current to be output by the whole bridge. The backward stage DC-AC adopts a transformerless half-bridge inversion structure, inverts the high-voltage direct current to directly output and can adopt PWM and PFM control modes. The power supply cannot consider the difficulties brought by the working range of the transformer, is easy to implement and also has the characteristics of wide power output frequency range and the like.
Description
Technical field
The invention belongs to the ultrasonic transducer driving power technical field, refer more particularly to a kind of ultrasonic power driving power supply of novel topological structure.
Background technology
Ultrasonic transducer is that the electric energy of supersonic frequency is converted to ultrasonic energy, and its application comprises ultrasonic cleaning, ultrasonic power equipment such as ultra-sonic welded and ultrasound electric machine.Industrial increasing to the ultrasonic power driving power supply demand.For example ultrasound electric machine is a kind of New-type electric machine that is different from the traditional electrical magneto, has or not electromagnetic interference, can accomplish unique advantages such as short, little, frivolous, and at Aero-Space, biologic medical, accurate industrial instrumentation, fields such as robot have broad application prospects.
Ultrasonic transducer needs good drive unit---ultrasonic transducer driving power as a kind of actuator.Because this performance that not only directly has influence on ultrasonic transducer is brought into play, also have influence on the useful life of ultrasonic transducer.At present relevant ultrasonic transducer driving power research is a lot, relates to the circuit structure of driving power, supersonic signal generator, and aspects such as driving power control mode, and obtain certain achievement.In conjunction with existing ultrasonic transducer driving power present Research, draw present ultrasonic transducer driving power output stage and all adopt the circuit structure output that has transformer, therefore adopt single-chip microcomputer, DSP ultrasonic transducer driving power as controller though have, but because the restriction of the operating frequency of transformer, the output frequency adjustable range of ultrasonic transducer is minimum.This has influenced the research of the different ultrasonic transducer of frequency requirement, and also the practicality to ultrasonic transducer has produced inhibition.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provide a kind of more advanced, can enlarge the ultrasonic power driving power supply system of the novel topological structure of driving power range of application.System adopts novel two-stage circuit as the Driven by Ultrasonic Motors circuit construction of electric power, and the cooperation digitial controller is as the driving power of supersonic signal generator and signal processor, in fact function surmounts the simple function of conventional ultrasound power power-supply, can also carry out the control of ultrasonic transducer according to actual needs.The two-stage circuit structure is compared with the ultrasonic transducer driving power of traditional circuit structure, can not only export by wideband, and can adopt synchronous rectification and soft switch technique in prime, and the transformer of optimizing the steady job frequency remedies the loss of efficient, two-phase is worked in coordination with and is exported to ultrasound electric machine simultaneously, also but two-phase is exported to other ultrasonic power equipment separately, thereby has enlarged the range of application of driving power.
Purpose of the present invention is achieved by the following technical programs:
The ultrasonic power driving power supply system is the Two Stages structure, i.e. DC-DC and DC-AC.Preceding stage DC-DC comprises low-voltage direct DC-AC inversion and high-frequency and high-voltage rectification two parts, the output of low-voltage DC inversion boosting rectification high voltage direct current again.Back level DC-AC adopts the transless half-bridge topology, and the high voltage direct current inversion is directly exported.
The realization of preceding stage DC-DC circuit: inversion part, native system input voltage are 12V, and output voltage reaches several hectovolts, therefore need step-up transformer.Consider the high-end drive circuit challenge, adopted and recommended the inverter structure drive signal and provide 2 tunnel PWM waveforms independently that power MOSFET driving circuit has adopted the high-performance integrated drive chips, and has adopted RCD to absorb the circuit protection power tube by controller.The high-frequency and high-voltage rectification circuit adopts full bridge rectifier
The Cycle by Cycle Current Control that preceding stage DC-DC adopts solves push-pull transformer magnetic saturation problem.
The realization of back level DC-AC inverter circuit: in order to realize wideband output, the high voltage direct current that adopts prime output is as the input power supply, transformerless semi-bridge inversion structure is partly adopted in inversion, drive signal is provided by controller, because ultrasound electric machine needs the alternating current of 90 ° of two-phase phase differences to drive, and therefore needs the adjustable drive signal of 2 tunnel phase places.Power MOSFET driving circuit adopts the two-way integrated drive chips, and utilizes the bootstrap technique of the integrated driving of two-way to be the high-end MOSFET power supply of half-bridge.
A kind of ultrasonic power driving power supply of novel topological structure is characterized in that back level 2 road DC-AC adopt transformerless semi-bridge inversion structure, makes the power supply output frequency very wide, satisfies driving different operating frequency ultrasonic transducer.
The realization of phase detecting circuit: phase detecting circuit is the resonance frequency that can follow the tracks of ultrasound electric machine for the driving power output frequency, whether is operated in resonance condition because the phase difference size has characterized the load of driving power.Phase detecting circuit is by alternating voltage and current sample, and through the output of over-voltage comparator square wave, by the synthetic square-wave signal of AND circuit, square width can embody phase difference to the AC signal value that sampling is returned again near zero-crossing point.Through the output of low pass RC breadboardin voltage.
The realization of V/F change-over circuit: the V/F change-over circuit adopts special-purpose V/F conversion integrated chip, and the V/F change-over circuit, converts numerical frequency to and sends controller to and handle as input signal with the aanalogvoltage of phase detecting circuit output after the V/F change-over circuit is handled.
A kind of ultrasonic power driving power supply of novel topological structure is characterized in that output AC electricity frequency, phase place, voltage is adjustable.
Good effect of the present invention:
The driving power of novel topological structure is compared with the novel driving power that adopts the traditional single stage topological structure, reduces 1 on the number transformer; The design of transformer operating frequency is brought up to 100kHz by 20kHz, nearly 5 times of its volume-diminished; The transformer operating frequency is fixed, and design difficulty reduces.The frequency-tracking scheme adopts direct current peak value and direct current variable quantity to detect, and the phase difference detection assembled scheme of alternating voltage and electric current, and the realization frequency is followed the tracks of and accurately tracking fast, has remedied the deficiency of single tracking scheme.Realize the impedance Dynamic matching by phase difference detection, solved the defective of the static coupling of conventional power source.Designed man-machine interface, can accurately set novel driving power operational factor, solved conventional power source by regulating the inconvenience and the inaccuracy of RC value by keyboard.By the Cycle by Cycle current detecting, solved the conventional ADS driving power supply because of half winding weber of primary number do not wait and cause that power tube heating is serious, even damage the problem of MOSFET.
Description of drawings
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing:
Fig. 1 is the system principle structure chart of the present invention's one specific embodiment;
Fig. 2 is the circuit theory diagrams of the preceding stage DC-DC of the present invention's one specific embodiment;
Fig. 3 is the circuit theory diagrams of the back level DC-AC of the present invention's one specific embodiment;
Fig. 4 recommends the integrated drive electronics schematic diagram for the present invention's one specific embodiment;
Fig. 5 is the half-bridge integrated drive electronics schematic diagram of the present invention's one specific embodiment;
Fig. 6 is the phase detecting circuit schematic diagram of the present invention's one specific embodiment;
Fig. 7 is the V/F change-over circuit schematic diagram of the present invention's one specific embodiment.
Embodiment
Embodiment is referring to Fig. 1 to Fig. 7, and the novel topological structure ultrasonic power driving power supply is made up of a high-performance singlechip controller 1, V/F change-over circuit 2, phase detecting circuit 3, signal sample circuit 4, integrated drive electronics 5, push-pull inverter circuit 6, high-frequency step-up transformer 7, high-frequency rectification circuit 8, half-bridge inversion circuit 9, half-bridge inversion circuit 10, a match circuit 11 and a match circuit 12.
The purpose of present embodiment is, as input, the push-pull inverter circuit inversion boosting by a band transformer is the alternating current voltage that VPP equals 250-400V with DC power supply 12V, and the transformer operating frequency is fixed simultaneously, but the alternating voltage frequency can be regulated by wideband, and the system stability reliability service.
Novel ultrasonic power driving power supply of the present invention has the ability of wideband output, and transformer can be operated in fixing high frequency frequency, can drive the ultrasonic transducer of various frequencies and the supersonic motor of need two-phase drive signal.
Workflow of the present invention is:
After powering on, by the parameter of controller 1 initialization ultrasonic transducer, the frequency of initialization ultrasound drive signals, phase place and duty ratio.
After the initialize routine, the ultrasound drive signals that controller 1 produces flows to push-pull inverter circuit 6 and half-bridge inversion circuit 9 after integrated drive electronics 5 amplifies.
Push-pull inverter circuit 6 carries out high-frequency inversion with low-voltage DC, the AC signal of output high-frequency and high-voltage after high-frequency step-up transformer 7 boosts, this AC signal is exported the direct current input of high voltage direct current as back level DC-AC translation circuit again behind high-frequency rectification circuit 8 rectifying and wave-filterings, behind half-bridge high-frequency inverter circuit 9 and high-frequency inverter circuit 10, can export two-phase broadband, two-phase voltage phase difference and all adjustable AC signal of amplitude, by match circuit 10 and the various ultrasonic transducers of match circuit 11 rear drives.
Experimental results show that: novel driving power has been finished frequency-tracking and Dynamic matching function, has realized the operation stably of different ultrasonic transducers; By the Cycle by Cycle current detecting, there is not conventional power source short time operation heating phenomenon in main switch.
Claims (10)
1. the ultrasonic power driving power supply of a novel topological structure comprises preceding stage DC-DC, back level DC-AC, controller 1, V/F change-over circuit 2, phase detecting circuit 3, signal sample circuit 4, integrated drive electronics 5, match circuit 11, match circuit 12:
In addition,
Comprise a personal-machine interface, the user can accurately set novel driving power operational factor by the keyboard of man-machine interface,
Comprise a communication interface, be convenient to power-supply system and upgrade;
Wherein:
Described preceding stage DC-DC specifically comprises push-pull inverter circuit 6, high-frequency step-up transformer 7, high-frequency rectification circuit 8;
Described back level DC-AC specifically comprises half-bridge inversion circuit 9 and half-bridge inversion circuit 10;
Push-pull inverter circuit 6 links to each other with high-frequency step-up transformer 7, high-frequency step-up transformer 7 links to each other with high-frequency rectification circuit 8, high-frequency rectification circuit 8 links to each other with half-bridge inversion circuit 9, half-bridge inversion circuit 9 links to each other with matching network 11, half-bridge inversion circuit 10 links to each other with match circuit 12, signal sample circuit 4 links to each other with match circuit 12 with match circuit 11 respectively, simultaneously, signal sample circuit 4 links to each other with phase detecting circuit 3, link to each other with V/F change-over circuit 2 with phase detecting circuit 3, V/F change-over circuit 2 links to each other with singlechip controller 1, singlechip controller 1 links to each other with integrated drive electronics 5, in addition, integrated drive electronics 5 links to each other with half-bridge inversion circuit 10 with half-bridge inversion circuit 9 respectively.
2. the ultrasonic power driving power supply of a kind of novel topological structure according to claim 1, it is characterized in that, described half-bridge inversion circuit 9 is all identical with half-bridge inversion circuit 10 functions and structure, and simultaneously, match circuit 11 is all identical with match circuit 12 functions and structure.
3. the ultrasonic power driving power supply of a kind of novel topological structure according to claim 1 is characterized in that:
Described preceding stage DC-DC adopts the Cycle by Cycle Current Control;
Described push-pull inverter circuit 6 comprises transformer, and push-pull inverter circuit 6 adopts the push-pull topology structure, is used for low-voltage DC is carried out high-frequency inversion;
The low-voltage DC that described high-frequency step-up transformer 7 is used for having passed through high-frequency inversion boosts, and in the AC signal of back output high-frequency and high-voltage of boosting;
Described high-frequency rectification circuit 8 is a full bridge rectifier, is used for exporting high voltage direct current behind the AC signal rectifying and wave-filtering with the high-frequency and high-voltage of high-frequency step-up transformer 7 output, and with the direct current input of high voltage direct current as back level DC-AC.
4. the ultrasonic power driving power supply of a kind of novel topological structure according to claim 1 is characterized in that:
Described back level DC-AC adopts transformerless half-bridge topology;
Half-bridge inversion circuit 9 is exported broadband, voltage magnitude and the AC signal all adjustable with the voltage phase difference of half-bridge inversion circuit 10 with the high voltage direct current inversion;
Half-bridge inversion circuit 10 is exported broadband, voltage magnitude and the AC signal all adjustable with the voltage phase difference of half-bridge inversion circuit 9 with the high voltage direct current inversion.
5. the ultrasonic power driving power supply of a kind of novel topological structure according to claim 1, it is characterized in that, described controller 1 is the high-performance single-chip microcomputer, be used for the parameter of initialization ultrasonic transducer and produce ultrasonic signal, and the frequency of initialization ultrasound drive signals, phase place and duty ratio.
6. the ultrasonic power driving power supply of a kind of novel topological structure according to claim 1 is characterized in that, described signal sample circuit 4 is sent into phase detecting circuit 3 after the magnitude of voltage of AC signal and current value collection are returned.
7. the ultrasonic power driving power supply of a kind of novel topological structure according to claim 1, it is characterized in that, described phase detecting circuit 3 is by alternating voltage and current sample, the AC signal value that sampling is returned is exported through the over-voltage comparator square wave near zero-crossing point, again by the synthetic square-wave signal of AND circuit, square width can embody phase difference, and square-wave signal is through the output of low pass RC breadboardin voltage.
8. the ultrasonic power driving power supply of a kind of novel topological structure according to claim 1, it is characterized in that, described V/F change-over circuit 2 adopts V/F conversion integrated chip, V/F change-over circuit 2 with the aanalogvoltage of phase detecting circuit 3 output as input signal, send controller 1 processing to converting numerical frequency after the aanalogvoltage processing to, realize frequency-tracking.
9. the ultrasonic power driving power supply of a kind of novel topological structure according to claim 1, it is characterized in that, described integrated drive electronics 5 is used for the ultrasound drive signals that amplification controller 1 produces, and the ultrasound drive signals after will amplifying flows to push-pull inverter circuit 6, half-bridge inversion circuit 9 and half-bridge inversion circuit 10.
10. the ultrasonic power driving power supply of a kind of novel topological structure according to claim 1 is characterized in that:
Described match circuit 11 and match circuit 12 are used for driving ultrasonic transducer according to the output of back level DC-AC;
Described match circuit 11 and match circuit 12 all are controllable impedances, when driving different ultrasonic transducers, need to regulate suitable inductance value and mate with ultrasonic transducer;
Described match circuit 11 and match circuit 12 adopt the matching way of single inductance series connection.
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101969302A (en) * | 2010-09-01 | 2011-02-09 | 中国石油大学(华东) | Novel switch resonant power ultrasonic generating circuit |
| CN102591005A (en) * | 2011-01-13 | 2012-07-18 | 北京安南科技有限公司 | Novel driving device for Fourier infrared interference light modulation |
| CN103207576A (en) * | 2012-01-13 | 2013-07-17 | 江南大学 | Achieving method for low-power high-frequency ultrasonic power source |
| CN103567134A (en) * | 2013-11-11 | 2014-02-12 | 河海大学常州校区 | Matching device and matching method for ultrasonic power supply |
| CN103944386A (en) * | 2014-04-30 | 2014-07-23 | 常州信息职业技术学院 | DC-DC boost conversion device and boost conversion working method thereof |
| CN104516290A (en) * | 2013-09-30 | 2015-04-15 | 北京中电科电子装备有限公司 | Ultrasonic transducer driving power supply |
| CN104635034A (en) * | 2013-11-08 | 2015-05-20 | 上海工程技术大学 | Power grid synchronization measuring system based on precise timing |
| CN105790593A (en) * | 2014-12-25 | 2016-07-20 | 广东太阳库新能源科技有限公司 | MCU-controlled push-pull boosted circuit |
| CN106961229A (en) * | 2017-04-06 | 2017-07-18 | 深圳拓邦股份有限公司 | A kind of self adaptation washing facility numerical control supersonic driver |
| CN107438221A (en) * | 2016-05-25 | 2017-12-05 | 宝山钢铁股份有限公司 | A kind of online loudspeaker acoustic pressure detector and detection method |
| CN108318738A (en) * | 2018-01-26 | 2018-07-24 | 上海交通大学 | A kind of phase detecting circuit and parameter information detection method of radio energy transmission system |
| CN109174597A (en) * | 2018-10-25 | 2019-01-11 | 深圳市洁盟清洗设备有限公司 | Ultrasonic wave generative circuit and ultrasonic cleaning cup |
| CN110022066A (en) * | 2018-01-08 | 2019-07-16 | 乐金电子研发中心(上海)有限公司 | CLLC circuit of synchronous rectification and control method |
| CN110101413A (en) * | 2019-05-30 | 2019-08-09 | 深圳开立生物医疗科技股份有限公司 | A kind of single array element high frequency electric pulse generation circuit of ultrasound and imaging system |
| CN111555658A (en) * | 2020-05-28 | 2020-08-18 | 北京机械设备研究所 | Ultrasonic motor and drive circuit thereof |
| CN111658207A (en) * | 2020-06-08 | 2020-09-15 | 桂林市啄木鸟医疗器械有限公司 | Dental treatment system |
| CN112104260A (en) * | 2020-08-18 | 2020-12-18 | 华南农业大学 | V-shaped ultrasonic linear motor driving power supply and driving method thereof |
| CN112170148A (en) * | 2020-08-18 | 2021-01-05 | 华南农业大学 | Ultrasonic power direct current bias pulse excitation power supply |
| CN113252977A (en) * | 2021-06-25 | 2021-08-13 | 武汉半边天医疗技术发展有限公司 | Frequency searching circuit and frequency searching method of ultrasonic transducer |
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| CN101969302A (en) * | 2010-09-01 | 2011-02-09 | 中国石油大学(华东) | Novel switch resonant power ultrasonic generating circuit |
| CN102591005A (en) * | 2011-01-13 | 2012-07-18 | 北京安南科技有限公司 | Novel driving device for Fourier infrared interference light modulation |
| CN102591005B (en) * | 2011-01-13 | 2015-02-04 | 北京安南科技有限公司 | Novel driving device for Fourier infrared interference light modulation |
| CN103207576A (en) * | 2012-01-13 | 2013-07-17 | 江南大学 | Achieving method for low-power high-frequency ultrasonic power source |
| CN103207576B (en) * | 2012-01-13 | 2016-01-13 | 江南大学 | A kind of low-power high-frequency ultrasonic power source implementation method |
| CN104516290A (en) * | 2013-09-30 | 2015-04-15 | 北京中电科电子装备有限公司 | Ultrasonic transducer driving power supply |
| CN104635034A (en) * | 2013-11-08 | 2015-05-20 | 上海工程技术大学 | Power grid synchronization measuring system based on precise timing |
| CN103567134A (en) * | 2013-11-11 | 2014-02-12 | 河海大学常州校区 | Matching device and matching method for ultrasonic power supply |
| CN103567134B (en) * | 2013-11-11 | 2016-01-13 | 河海大学常州校区 | The coalignment of ultrasonic-frequency power supply and matching process thereof |
| CN103944386A (en) * | 2014-04-30 | 2014-07-23 | 常州信息职业技术学院 | DC-DC boost conversion device and boost conversion working method thereof |
| CN105790593A (en) * | 2014-12-25 | 2016-07-20 | 广东太阳库新能源科技有限公司 | MCU-controlled push-pull boosted circuit |
| CN107438221A (en) * | 2016-05-25 | 2017-12-05 | 宝山钢铁股份有限公司 | A kind of online loudspeaker acoustic pressure detector and detection method |
| CN106961229B (en) * | 2017-04-06 | 2023-02-28 | 深圳拓邦股份有限公司 | Numerical control ultrasonic driver of self-adaptive washing equipment |
| CN106961229A (en) * | 2017-04-06 | 2017-07-18 | 深圳拓邦股份有限公司 | A kind of self adaptation washing facility numerical control supersonic driver |
| CN110022066A (en) * | 2018-01-08 | 2019-07-16 | 乐金电子研发中心(上海)有限公司 | CLLC circuit of synchronous rectification and control method |
| CN108318738A (en) * | 2018-01-26 | 2018-07-24 | 上海交通大学 | A kind of phase detecting circuit and parameter information detection method of radio energy transmission system |
| CN108318738B (en) * | 2018-01-26 | 2020-06-12 | 上海交通大学 | Phase detection circuit and parameter information detection method of wireless power transmission system |
| CN109174597A (en) * | 2018-10-25 | 2019-01-11 | 深圳市洁盟清洗设备有限公司 | Ultrasonic wave generative circuit and ultrasonic cleaning cup |
| CN110101413A (en) * | 2019-05-30 | 2019-08-09 | 深圳开立生物医疗科技股份有限公司 | A kind of single array element high frequency electric pulse generation circuit of ultrasound and imaging system |
| CN111555658A (en) * | 2020-05-28 | 2020-08-18 | 北京机械设备研究所 | Ultrasonic motor and drive circuit thereof |
| CN111555658B (en) * | 2020-05-28 | 2021-07-27 | 北京机械设备研究所 | Ultrasonic motor and drive circuit thereof |
| CN111658207A (en) * | 2020-06-08 | 2020-09-15 | 桂林市啄木鸟医疗器械有限公司 | Dental treatment system |
| CN112104260A (en) * | 2020-08-18 | 2020-12-18 | 华南农业大学 | V-shaped ultrasonic linear motor driving power supply and driving method thereof |
| CN112170148A (en) * | 2020-08-18 | 2021-01-05 | 华南农业大学 | Ultrasonic power direct current bias pulse excitation power supply |
| CN112104260B (en) * | 2020-08-18 | 2021-06-25 | 华南农业大学 | V-shaped ultrasonic linear motor driving power supply and driving method thereof |
| CN113252977A (en) * | 2021-06-25 | 2021-08-13 | 武汉半边天医疗技术发展有限公司 | Frequency searching circuit and frequency searching method of ultrasonic transducer |
| CN113252977B (en) * | 2021-06-25 | 2021-10-01 | 武汉半边天医疗技术发展有限公司 | Frequency searching circuit and frequency searching method of ultrasonic transducer |
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Application publication date: 20100804 |