CN103187880A - Ultrasonic wave power source for driving magnetostrictive transducer - Google Patents
Ultrasonic wave power source for driving magnetostrictive transducer Download PDFInfo
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- CN103187880A CN103187880A CN2013101104643A CN201310110464A CN103187880A CN 103187880 A CN103187880 A CN 103187880A CN 2013101104643 A CN2013101104643 A CN 2013101104643A CN 201310110464 A CN201310110464 A CN 201310110464A CN 103187880 A CN103187880 A CN 103187880A
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Abstract
The invention provides an ultrasonic wave power source for driving a magnetostrictive transducer. The ultrasonic wave power source comprises a rectifying filtering circuit, a power inversion circuit, a low pressure control triggering circuit for outputting a control signal of a power switching tube in the power inversion circuit and a matching and load regulation circuit, wherein the matching and load regulation circuit comprises a high frequency output transformer T, and the primary side of the high frequency output transformer T is connected with the power inversion circuit. The improvement of the ultrasonic wave power source provided by the invention is as follows: the matching and load regulation circuit also comprises a diode D and a resistor R5, and the diode D and the resistor R5 are connected in parallel so as to be connected in series with the magnetostrictive transducer in an auxiliary side loop of the high frequency output transformer T; the ultrasonic wave power source provided by the invention can be used for realizing the purpose that an electric current flowing the magnetostrictive transducer is a plus-minus semi-revolution dissymmetry alternate current, a direct-current channel is not needed to be additionally increased, and the transducer can normally operate in a bias magnetic state; and the driving circuit of the magnetostrictive transducer is simplified.
Description
Technical field
The present invention relates to a kind of ultrasonic power, be specifically related to a kind of supersonic generator that drives magnetostrictive transducer.
Background technology
Power ultrasonic has a wide range of applications in fields such as cleaning, welding, effective ingredients in plant extraction, phonochemistrys at present.The ultrasonic wave of industrial application is normally converted through transducer by the electromagnetic wave of certain frequency.Ultrasonic transducer comprises power unit and transducer portion, and wherein transducer comprises PZT (piezoelectric transducer) and magnetostrictive transducer.PZT (piezoelectric transducer) energy conversion efficiency height, cost is low, occupies leading position in market.But, even its energy conversion efficiency height, but still in the inevitable transducer course of work because the heat that the dielectric loss of transductive material and mechanical loss produce, this part heat is difficult to take away by supplementary means, thereby the temperature that causes transductive material raises, can work bring adverse effect to PZT (piezoelectric transducer), particularly under high-power driving and situation about working long hours, this can become the principal element that the restriction PZT (piezoelectric transducer) uses.In addition, the frequency band of PZT (piezoelectric transducer) work is narrow, in the face of the load that constantly changes, it need in time follow the tracks of the frequency of transducer, so that transducer is operated in optimum state, therefore the power supply of PZT (piezoelectric transducer) all is provided with the automatic frequency tracking part usually, and this is at the cost that raises ultrasonic transducer virtually.
The characteristics of magnetostrictive transducer are that the generation frequency of ultrasonic is lower, usually in tens of kilohertz range, though its energy conversion efficiency is not as good as PZT (piezoelectric transducer), but add supplementary means and take away the heat that produces in the transductive material course of work owing to can use, thereby can produce very big radiant power, can reach thousands of watts; And its mechanical strength is very big, and working band is wide, therefore obtains to use widely in the high power art of ultrasound.Because magnetostrictive material are worked usually in such transducer, therefore when design, need apply bias magnetic field to magnetostrictive material under the magnetic bias state.A kind of method is to add permanent magnetic material this direct current biasing magnetic field is provided when the design transducer.This method makes the design of transducer become more complicated on the one hand; And when high-power driving, because permanent magnet often is in the very strong alternating magnetic field in the transducer course of work, the performance of permanent magnet can constantly degenerate, thereby causes the performance depreciation of transducer even can't work.Another kind method is the direct current that provides suitable in ultrasonic-frequency power supply, and this direct current puts on the coil that is wrapped in magnetostrictive material, thereby makes magnetostrictive material be in the magnetic bias state.This method is more suitable for for high-power driving magnetostrictive transducer field.Therefore, with regard to the power supply that drives PZT (piezoelectric transducer) and magnetostrictive transducer, the difference of its maximum is that the power supply that drives magnetostrictive transducer also needs to provide one road direct current to transducer.
The main effect of ultrasonic power is the signal of telecommunication that provides power and frequency to regulate within the specific limits to transducer, thereby drives transducer work.The PZT (piezoelectric transducer) ultrasonic power of current main-stream, its element comprise vibration and the drive circuit of current rectifying and wave filtering circuit, power inversion circuit, match circuit and the power switch pipe output control signal in the inverter circuit.At present, the ultrasonic wave driving power just develops towards wide frequency ranges, high-power scope, automatic frequency tracking and digitlization direction, makes that the function of ultrasonic power is more complete, and automaticity is higher.But, the mode that applies for its AC and DC of ultrasonic power that drives magnetostrictive transducer is but still relatively traditional.As shown in Figure 1, traditional magnetostrictive transducer ultrasonic power mainly is made up of current rectifying and wave filtering circuit, power inversion circuit, coupling and buffer circuit, the low voltage control circuits for triggering of power switch pipe output control signal in the inverter circuit.Common way is, the two ends that are respectively transducer provide AC portion and direct current component, high frequency electric source output transformer output connects capacitance and connects ultrasonic transducer again, DC power supply connects choke and connects transducer again, thereby reaches the purpose that alternating current path and DC channel are isolated from each other.The shortcoming of doing so also is apparent, makes power supply cost height, volume big owing to added DC channel, and this is to hinder the main cause that magnetostrictive transducer is used.
Summary of the invention
The objective of the invention is to overcome the deficiency of the ultrasonic power of above-mentioned driving magnetostrictive transducer, a kind of extra DC channel is carried out magnetic bias to magnetostrictive material ultrasonic power that need not is provided.The technical solution used in the present invention is:
A kind of for the ultrasonic power that drives magnetostrictive transducer, comprise low voltage control circuits for triggering, coupling and the load regulation circuit of current rectifying and wave filtering circuit, power inversion circuit, the power switch pipe output control signal in the power inversion circuit; The input of current rectifying and wave filtering circuit connects power supply, and output connects power inversion circuit; The low voltage control circuits for triggering connect power supply and power inversion circuit respectively; Power inversion circuit connects coupling and load regulation circuit, and coupling and load regulation circuit connect magnetostrictive transducer L;
Described coupling and load regulation circuit comprise a high-frequency output transformer T, and the former limit of high-frequency output transformer T connects power inversion circuit, and improvements of the present invention are:
Described coupling and load regulation circuit also comprise diode D and resistance R 5, are connected in the secondary loop of high-frequency output transformer T with magnetostrictive transducer L after diode D and resistance R 5 parallel connections again.
Wherein, described power inversion circuit adopts half-bridge power inversion amplifying circuit.
Principle of the present invention is such, the secondary load of described coupling and load regulation circuit is perception, the purpose of coupling is to obtain suitable effective power at transducer, and the purpose of load regulation is to obtain asymmetric alternating current by the load of regulating high-frequency output transformer T secondary loop.
High-frequency output transformer T is subjected to the driving of upper level power inversion circuit, produces the alternating current of induction at the secondary of high-frequency output transformer T; In coupling and load regulation circuit, add diode D and resistance R 5, utilize the unilateral conduction of diode, make each self-corresponding load of positive-negative half-cycle of the alternating current that high-frequency output transformer T secondary is exported not wait, thereby make the positive-negative half-cycle of alternating current when the magnetostrictive transducer L, magnetostrictive transducer L obtains asymmetric alternating current, so be equivalent to transducer has been applied the simple harmonic quantity AC and DC from effect, make transducer in the purpose of magnetic bias state thereby reach.
Outstanding advantage of the present invention do not need to be additionally to increase DC channel and just to make transducer operate as normal under the magnetic bias state, thereby structurally simplified the drive circuit of magnetostrictive transducer, not only be beneficial to the miniaturization of power supply, and greatly reduced the manufacturing cost of power supply.
Description of drawings
Fig. 1 is the circuit block diagram of traditional driving magnetostrictive transducer ultrasonic power.
Fig. 2 is the circuit block diagram of ultrasonic power of the present invention.
Fig. 3 is power inversion circuit and coupling and the load regulation circuit figure in the embodiment of the invention.
Embodiment
The invention will be further described below in conjunction with concrete drawings and Examples.
Circuit block diagram of the present invention comprises low voltage control circuits for triggering 4, coupling and the load regulation circuit 5 of current rectifying and wave filtering circuit 2, power inversion circuit 3, the power switch pipe output control signal in the power inversion circuit 3 as shown in Figure 2; The input of current rectifying and wave filtering circuit 2 connects power supply 1, and output connects power inversion circuit 3; Low voltage control circuits for triggering 4 connect power supply 1 and power inversion circuit 3 respectively; Power inversion circuit 3 connects coupling and load regulation circuit 5, and coupling and load regulation circuit 5 connect magnetostrictive transducer L.Compare with the theory diagram of the ultrasonic power of traditional driving magnetostrictive transducer shown in Figure 1, ultrasonic power of the present invention has been cancelled extra DC channel, thereby also needn't adopt buffer circuit; Increased the load regulation circuit, made transducer be operated in purpose under the magnetic bias state thereby reach.Usually, need in the buffer circuit to use electronic components such as inductance and electric capacity, its volume is big, cost is high, and the load regulation circuit uses electronic components such as diode and resistance, and its cost is low, volume is little.
Described coupling and load regulation circuit 5 are made up of high-frequency output transformer T, diode D, resistance R 5; The former limit of high-frequency output transformer T connects upper level power inversion circuit 3.First end of the secondary of high-frequency output transformer T connects the end of magnetostrictive transducer L, and the other end of magnetostrictive transducer L connects the negative electrode of diode D and an end of resistance R 5; The other end of the anode of diode D and resistance R 5 is connected second end of the secondary of high-frequency output transformer T.
The effect of coupling and load regulation circuit 5 is to make magnetostrictive transducer L be in the magnetic bias state, and obtains suitable power, guarantees the operate as normal of transducer.High-frequency output transformer T secondary output AC electric current is pressed the circulation of the direction of arrow shown in the figure when current i, and diode D is in cut-off state, and the load of high-frequency output transformer T secondary circuit is equivalent load and resistance R 5 sums of magnetostrictive transducer L; Press the rightabout circulation of the direction of arrow shown in the figure when current i, diode D is in conducting state, because diode D dynamic electric resistor is very little, be equivalent to resistance R 5 is played the short circuit effect, this moment, the load of high-frequency output transformer T secondary circuit was the equivalent load of magnetostrictive transducer L.Thereby the load of the positive half cycle of high-frequency output transformer T secondary output AC electricity high-frequency output transformer T secondary circuit during with negative half period is different, and the electric current of having realized flowing through magnetostrictive transducer L is the purpose of positive-negative half-cycle asymmetrical alternating current electric current.
Claims (2)
1. ultrasonic power that be used for to drive magnetostrictive transducer comprises low voltage control circuits for triggering (4), coupling and the load regulation circuit (5) of current rectifying and wave filtering circuit (2), power inversion circuit (3), the power switch pipe output control signal in the power inversion circuit (3); The input of current rectifying and wave filtering circuit (2) connects power supply (1), and output connects power inversion circuit (3); Low voltage control circuits for triggering (4) connect power supply (1) and power inversion circuit (3) respectively; Power inversion circuit (3) connects coupling and load regulation circuit (5), and coupling and load regulation circuit (5) connect magnetostrictive transducer L;
Described coupling and load regulation circuit (5) comprise a high-frequency output transformer T, and the former limit of high-frequency output transformer T connects power inversion circuit (3), it is characterized in that:
Described coupling and load regulation circuit (5) also comprise diode D and resistance R 5, are connected in the secondary loop of high-frequency output transformer T with magnetostrictive transducer L after diode D and resistance R 5 parallel connections again.
2. as claimed in claim 1 for the ultrasonic power that drives magnetostrictive transducer, it is characterized in that: first end of the secondary of described high-frequency output transformer T connects the end of magnetostrictive transducer L, and the other end of magnetostrictive transducer L connects the negative electrode of diode D and an end of resistance R 5; The other end of the anode of diode D and resistance R 5 is connected second end of the secondary of high-frequency output transformer T.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2013101104643A CN103187880A (en) | 2013-03-29 | 2013-03-29 | Ultrasonic wave power source for driving magnetostrictive transducer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013101104643A CN103187880A (en) | 2013-03-29 | 2013-03-29 | Ultrasonic wave power source for driving magnetostrictive transducer |
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| CN103187880A true CN103187880A (en) | 2013-07-03 |
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| CN2013101104643A Pending CN103187880A (en) | 2013-03-29 | 2013-03-29 | Ultrasonic wave power source for driving magnetostrictive transducer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107787789A (en) * | 2017-10-19 | 2018-03-13 | 湖南杂交水稻研究中心 | A kind of processing method for improving rice quality |
| CN109570137A (en) * | 2019-01-18 | 2019-04-05 | 西南交通大学 | A kind of ultrasound wave descaling device with self-diagnostic function |
| CN110514060A (en) * | 2019-09-30 | 2019-11-29 | 青岛大学 | A kind of ultrasound wave descaling method of scale inhibition |
| CN113904569A (en) * | 2021-10-20 | 2022-01-07 | 杭州茂葳科技有限公司 | Ultrasonic drive circuit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH07231247A (en) * | 1994-02-17 | 1995-08-29 | Ge Yokogawa Medical Syst Ltd | Ultrasonic wave vibration element drive circuit and fet drive circuit |
| CN101269370A (en) * | 2007-03-22 | 2008-09-24 | 深圳市艾柯森自动化设备有限公司 | Digital ultrasonic generator |
| CN201783094U (en) * | 2010-07-30 | 2011-04-06 | 闻亚彬 | Reduced ion therapeutic apparatus outputting adjustable positive-negative asymmetric sine wave |
| CN102259233A (en) * | 2011-07-29 | 2011-11-30 | 广州市精源电子设备有限公司 | Intermediate-frequency inverter-resistance spot welding power-supply system |
| CN102594155A (en) * | 2012-03-30 | 2012-07-18 | 江苏晟芯微电子有限公司 | Primary edge control type switch power supply with high-precision constant-voltage/constant-current output and high-pulse-frequency (PF) value |
| CN203219185U (en) * | 2013-03-29 | 2013-09-25 | 无锡正一生源科技有限公司 | Supersonic-wave power supply for driving magnetostrictive transducer |
-
2013
- 2013-03-29 CN CN2013101104643A patent/CN103187880A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07231247A (en) * | 1994-02-17 | 1995-08-29 | Ge Yokogawa Medical Syst Ltd | Ultrasonic wave vibration element drive circuit and fet drive circuit |
| CN101269370A (en) * | 2007-03-22 | 2008-09-24 | 深圳市艾柯森自动化设备有限公司 | Digital ultrasonic generator |
| CN201783094U (en) * | 2010-07-30 | 2011-04-06 | 闻亚彬 | Reduced ion therapeutic apparatus outputting adjustable positive-negative asymmetric sine wave |
| CN102259233A (en) * | 2011-07-29 | 2011-11-30 | 广州市精源电子设备有限公司 | Intermediate-frequency inverter-resistance spot welding power-supply system |
| CN102594155A (en) * | 2012-03-30 | 2012-07-18 | 江苏晟芯微电子有限公司 | Primary edge control type switch power supply with high-precision constant-voltage/constant-current output and high-pulse-frequency (PF) value |
| CN203219185U (en) * | 2013-03-29 | 2013-09-25 | 无锡正一生源科技有限公司 | Supersonic-wave power supply for driving magnetostrictive transducer |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107787789A (en) * | 2017-10-19 | 2018-03-13 | 湖南杂交水稻研究中心 | A kind of processing method for improving rice quality |
| CN109570137A (en) * | 2019-01-18 | 2019-04-05 | 西南交通大学 | A kind of ultrasound wave descaling device with self-diagnostic function |
| CN109570137B (en) * | 2019-01-18 | 2024-03-29 | 西南交通大学 | Ultrasonic descaling device with self-diagnosis function |
| CN110514060A (en) * | 2019-09-30 | 2019-11-29 | 青岛大学 | A kind of ultrasound wave descaling method of scale inhibition |
| CN110514060B (en) * | 2019-09-30 | 2021-07-06 | 青岛大学 | Ultrasonic descaling and scale inhibition method |
| CN113904569A (en) * | 2021-10-20 | 2022-01-07 | 杭州茂葳科技有限公司 | Ultrasonic drive circuit |
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Application publication date: 20130703 |
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