CN108233745A - A kind of ultrasonic power circuit - Google Patents
A kind of ultrasonic power circuit Download PDFInfo
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- CN108233745A CN108233745A CN201810121563.4A CN201810121563A CN108233745A CN 108233745 A CN108233745 A CN 108233745A CN 201810121563 A CN201810121563 A CN 201810121563A CN 108233745 A CN108233745 A CN 108233745A
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- power
- ultrasonic transducer
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- unit
- voltage
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
Abstract
The invention discloses a kind of ultrasonic power circuit, including power conversion modules, drive control and display module and sampling and protection module；Sampling samples the voltage and current of ultrasonic transducer with protection module in real time；Drive control handles sampled signal to obtain the real-time output power of ultrasonic transducer and vibration frequency, and be sent to power conversion modules with display module；Power conversion modules control the output voltage of ultrasonic power in real time, and the output power of ultrasonic transducer is adjusted to steady state；Power conversion modules are compensated and are corrected in real time to the vibration frequency received, and ultrasonic transducer is made to remain operating in resonant condition.The present invention controls ultrasonic power output voltage, and ultrasonic transducer output power is adjusted to steady state；The vibration frequency of ultrasonic transducer is compensated and corrected in real time, it is made to remain operating in resonant condition, ensure that ultrasonic wave processing or the reliability and stability of welding.
Description
Technical field
The present invention relates to ultrasonic power technical fields, and in particular to a kind of ultrasonic power circuit.
Background technology
Ultrasonic power is also known as ultrasonic wave driving power or supersonic generator, it is a kind of generating and to ultrasonic wave
Energy converter provides the device of supersonic frequency electric energy.Since ultrasonic wave has good directionality, penetration capacity is strong, is easily obtained and relatively collects
In acoustic energy, therefore, in fields such as processing, welding and cleanings using wide.
Current ultrasonic power is in the prevalence of output power is non-adjustable, output power is limited and the feelings such as bandwidth is limited
Condition, and constant output is unable to when load changes, this is to the big discounting of the working performance of ultrasonic transducer
Button, particularly when ultrasonic wave processing or welding, the requirement to power invariability is very high, directly influences processing or weldering
The effect connect.Moreover, to the vibration frequency of ultrasonic transducer can not real-time tracking and feedback, prevent ultrasonic transducer from
Resonant condition is always worked at, causes its power attenuation serious.
Invention content
The technical problems to be solved by the invention be the output power of existing ultrasonic power is non-adjustable, output power by
Limit and bandwidth are limited, and influence the working performance of ultrasonic transducer, and can not real-time tracking and feedback ultrasonic transducer
Vibration frequency, cause ultrasonic transducer that cannot always work at resonant condition, power attenuation is serious.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is to provide a kind of ultrasonic power circuit,
Including power conversion modules, drive control and display module and sampling and protection module；The sampling is with protection module to super
The voltage and current of acoustic wave transducer is sampled and is sent to the drive control and display module in real time；The drive control
The sampled signal received is handled with display module to obtain the real-time output power of ultrasonic transducer and vibration frequency
Rate, and it is sent to the power conversion modules；
The power conversion modules are according to the output power of the ultrasonic transducer received, the output to ultrasonic power
Voltage is controlled in real time, and the output power of ultrasonic transducer is adjusted to steady state；The power conversion modules docking
The vibration frequency of the ultrasonic transducer received, compensates and corrects in real time, and ultrasonic transducer is made to remain operating in resonance
State.
Preferably, it is inverse to include single-phase full bridge controlled rectification unit, wave filter, IGBT high frequency full-bridges for the power conversion modules
Become unit and net mate unit, stabilization is obtained by filter filtering by the direct current of single-phase full bridge controlled rectification unit
Direct current, IGBT high frequency full-bridge inverting units handle stable direct current to obtain the square wave of required supersonic frequency, then lead to
It crosses net mate unit to be matched with ultrasonic transducer, to meet the power between ultrasonic power and ultrasonic transducer
And resonance matching.
Preferably, the power conversion modules further include protection circuit RCD and are arranged on net mate unit and ultrasound
Waveform converter unit between wave transducer, the protection circuit RCD protect IGBT high frequency full-bridge inverting units；It is described
Square wave is transformed into string wave by waveform converter unit.
Preferably, the drive control includes isolated form DAC, IGBT drive amplification unit with display module and DSP is controlled
Device；
The varying level control signal that the dsp controller is sent out exports voltage stabilizing by isolated form DAC, described for controlling
The output voltage size of single-phase full bridge controlled rectification unit；
The PWM wave that the dsp controller is sent out is after the amplification of IGBT drive amplifications unit, for controlling the IGBT high
The IGBT of frequency full-bridge inverting unit is opened and is turned off；Wherein, the frequency for the PWM wave that the dsp controller is sent out by sampling with
It is calculated after protection module sampling processing.
Preferably, the drive control further includes PC communication units, man-machine interaction unit and police instruction with display module
Lamp, the dsp controller realize the communication with PC by PC communication units；The work(of human-computer interaction is realized by man-machine interaction unit
Energy；When fault, light alarm lamp and send alarm signal to operating personnel.
Preferably, the sampling includes high frequency voltage or current sample tracking cell and RMS conversion with protection module
Device, high frequency voltage or current sample tracking cell sample the voltage and current of ultrasonic transducer in real time, and will sampling
Signal is sent to RMS conversion device and is converted, and the output power size of the ultrasonic transducer got is input to
Dsp controller.
Preferably, the sampling further includes circuit protection unit and phase discriminator, the circuit protection unit with protection module
Whether worked normally according to the transformation result decision circuitry of RMS conversion device and accordingly protected；Phase discriminator believes sampling
Number analyzed and processed, judge the voltage of ultrasonic transducer and electric current whether same-phase, and result is fed back into dsp controller
To control the transmission of PWM wave.
Preferably, the accessory power supply for the drive control and display module and sampling and protection module power supply is further included
Module, the auxiliary power module include rectification filtering unit and flyback transformer, the rectification filtering unit to alternating current into
The flyback transformer is sent to after row rectifying and wave-filtering；The flyback transformer uses multiple-channel output, is the isolated form
DAC, dsp controller, IGBT drive amplifications unit, man-machine interaction unit, RMS conversion device, phase discriminator and high frequency voltage
Or current sample tracking cell is powered.
Ultrasonic power circuit provided by the invention is by sampling the obtained voltage and electric current of ultrasonic transducer, to adopting
Sample signal is handled to obtain the real-time output power of ultrasonic transducer and vibration frequency, to the output electricity of ultrasonic power
It is controlled during compacting, the output power of ultrasonic transducer is adjusted to steady state；To the ultrasonic transducer received
Vibration frequency, compensate and correct in real time, ultrasonic transducer is made to remain operating in resonant condition, so as to ensure that ultrasound
Wave is processed or the reliability and stability of welding.
Description of the drawings
Fig. 1 is the circuit theory schematic diagram of ultrasonic power circuit in the present invention；
Fig. 2 is IGBT full bridge inverter schematic diagrams in the present invention；
Fig. 3 is IGBT drive amplification circuit diagrams in the present invention；
Fig. 4 is phase detector circuit schematic diagram in the present invention.
Specific embodiment
In order to solve, the output power of existing ultrasonic power is non-adjustable, output power is limited and bandwidth is limited, nothing
The vibration frequency of method real-time tracking and feedback ultrasonic transducer, causes ultrasonic transducer that cannot always work at resonance shape
State, the problem of making its power attenuation serious.
The embodiment of the present invention proposes a kind of ultrasonic power circuit, can adjust the output of ultrasonic power as needed
Power, and power invariability can also be met during the work time so that the output power of ultrasonic power is constant, and amplitude is steady
It is fixed, and real-time tracking and feedback can be carried out to the output power and vibration frequency of ultrasonic transducer, to ultrasonic wave electricity
The output voltage in source is controlled in real time, and the output power of ultrasonic transducer is adjusted to steady state；It is super to what is received
The vibration frequency of acoustic wave transducer, compensates and corrects in real time, ensures that ultrasonic transducer remains operating in resonant condition, from
And the working performance of ultrasonic power is improved, it realizes adjustable output power, invariable power and amplitude stability, there is efficient, high stable
The advantages that property.
The present invention is described in detail with specific embodiment with reference to the accompanying drawings of the specification.
An embodiment of the present invention provides a kind of ultrasonic power circuit, as shown in Figure 1, including power conversion modules 1, driving
Control and display module 2 and sampling and protection module 4, the sampling and protection module 4 to the voltage of ultrasonic transducer and
Electric current is sampled and is sent to the drive control and display module 2 in real time；The drive control is with display module 2 to receiving
To sampled signal handled to obtain the real-time output power of ultrasonic transducer and vibration frequency, and be sent to the work(
Rate conversion module 1；The power conversion modules 1 are according to the output power of the ultrasonic transducer received, to ultrasonic power
Output voltage controlled in real time, the output power of ultrasonic transducer is adjusted to steady state；The power conversion mould
Vibration frequency of the block 1 to the ultrasonic transducer received, compensates and corrects in real time, and ultrasonic transducer is made to keep work
In resonant condition.
Power conversion modules 1 include single-phase full bridge controlled rectification unit 10, wave filter 11, IGBT high frequency full-bridge inverting units
12nd, protection circuit RCD13, net mate unit 14 and waveform converter unit 15, by single-phase full bridge controlled rectification unit 10
Direct current stable direct current is obtained by the filtering of wave filter 11, IGBT high frequency full-bridge invertings unit 12 to stable direct current at
Reason obtains the square wave of required supersonic frequency, then matched with ultrasonic transducer by net mate unit 14, with full
Power and resonance between sufficient ultrasonic power and ultrasonic transducer match.Power conversion modules 1 further include protection circuit
RCD13 and the waveform converter unit 15 being arranged between net mate unit 14 and ultrasonic transducer, the protection circuit
RCD13 protects IGBT high frequency full-bridge invertings unit 12；Square wave is transformed into string wave by the waveform converter unit 15, to subtract
Few influence of the voltage during alternation to ultrasonic transducer stability of vibration.
Drive control includes isolated form DAC 20, IGBT drive amplifications unit 21, dsp controller 22, PC with display module 2
Communication unit 23, man-machine interaction unit 24 and alarm lamp 25, the varying level control signal that the dsp controller 22 is sent out
Voltage stabilizing is exported by isolated form DAC 20, for controlling the output voltage size of the single-phase full bridge controlled rectification unit 10, with
Meets the needs of different capacity and invariable power；The PWM wave that the dsp controller 22 is sent out passes through IGBT drive amplifications unit 21
After amplification, for controlling IGBT (the Insulated GateBipolar of the IGBT high frequencies full-bridge inverting unit 12
Transistor, insulated gate bipolar transistor) it opens and turns off；Wherein, the frequency of PWM wave that the dsp controller 22 is sent out
For rate by sampling with being calculated after 4 sampling processing of protection module, it is the humorous of ultrasonic transducer that can realize working frequency
Vibration frequency.The dsp controller 22 realizes the communication with PC by PC communication units 23；People is realized by man-machine interaction unit 24
The function of machine interaction, the man-machine interaction unit 24 use touch screen to be shown, can be by changing the parameter adjustment on touch screen
Frequency range is searched, increases bandwidth；When fault, light alarm lamp 25 and send alarm signal to operating personnel.
The sampling includes circuit protection unit 41, phase discriminator 42, high frequency voltage or current sample with protection module 4 and tracks
Unit 43 and RMS conversion device 40, high frequency voltage or current sample tracking cell 43 are to the voltage and electricity of ultrasonic transducer
Stream is sampled, and sampled signal is sent to RMS conversion device 40 and is converted in real time, the ultrasonic waves that will be got
Can the output power size of device be input to dsp controller 22, realize to the real-time tracking of ultrasonic transducer output power and
The control of power invariability ensures that ultrasonic transducer is operated in resonant condition.Circuit protection unit 41 is according to RMS conversion
Whether the transformation result decision circuitry of device 40 works normally, and so as to be protected to the hardware of entire ultrasonic power, prevents out
Situations such as existing overcurrent, burns or punctures component；Phase discriminator 42 analyzes and processes sampled signal, to ultrasonic transducer
The phase of voltage and current is acquired, judge the voltage of ultrasonic transducer and electric current whether same-phase, and result is fed back
To dsp controller 22 to control the transmission of PWM wave, ensure that ultrasonic transducer is operated in resonant condition, so as to improve ultrasonic wave
The working performance of energy converter.
The ultrasonic power circuit of the present invention is further included as the drive control and display module 2 and sampling and protection mould
The auxiliary power module 3 that block 4 is powered, the auxiliary power module 3 include rectification filtering unit 30 and flyback transformer 31, institute
It states after rectification filtering unit 30 carries out rectifying and wave-filtering to alternating current and is sent to the flyback transformer 31；The flyback transformer
31 can reduce volume, and can be the isolated form DAC 20, dsp controller 22, IGBT drive amplification units with multiple-channel output
21st, man-machine interaction unit 24, RMS conversion device 40, phase discriminator 42 and high frequency voltage or current sample tracking cell 43 etc.
Part is powered.
It describes in detail below to the ultrasonic power circuit of the embodiment of the present invention.
The ultrasonic power circuit of the present invention does not have the occasion of application too many limitation using electric main, should
With extensive.After energization, line filter is first passed through, for filtering out interference of the power grid to this power supply, passes through after line filter points
Two-way is respectively that power section is powered with accessory power supply part.
First, alternating current will obtain 5V, ± 12V, 24V by arriving inverse-excitation type switch power-supply after rectifying and wave-filtering after city's electric treatment
Etc. the not interactional light current of multichannels, provide power supply for the chips such as touch screen, DSP, driving chip and module.
Touch screen can be with information such as display frequency, power, and can operate on it, and realize the function of human-computer interaction,
Its processing to signal is completed in dsp controller, and DSP is the core control part of entire power supply, not only can be with showing
Display screen communicates, and can also be communicated with PC, provide alarm lamp alarm signal, can be sent out PWM wave and full-controlled rectifier module
Required control voltage (being converted to required voltage by DAC chip realization after transmission digital signal), can also receive to adopt
The signals such as phase difference and virtual value that sample is fed back realize the real time monitoring to entire power supply and control.Wherein DAC control letters
It number needs, by can just be connected in single-phase full-controlled rectifier module after isolation, forceful electric power in power circuit can be prevented in this way to control
The light current of circuit processed generates interference so that mistake or DAC occur for main program and dsp chip is burned out.
The alternating current come out by line filter can also pass through single-phase full bridge controllable rectifier module, and full-controlled rectifier module comes out
It is then the direct current with many alternating components, it is therefore desirable to first be filtered and then ability inversion, the inversion of this power supply use
Be IGBT high frequency H bridge inversions, as shown in Figure 2.Since IGBT in the moment of switch will appear peak voltage and overcurrent.Cause
This, is easy for will appear the phenomenon that IGBT is breakdown if being handled not to this, so employ in the present invention
As shown in Figure 2 utilizes resistance R7, R8, R9, R10, capacitance CBB1, CBB2, CBB3, CBB4 and fast recovery diode D3, D4,
D5, D6 come respectively to Q1, Q2, Q3, and tetra- IGBT of Q4 are protected, and the control terminal of 4 IGBT, i.e. 1 pin are additionally provided with driving
Resistance, to limit electric current and voltage, ensures the steady operation of IGBT with voltage-stabiliser tube.
And it is to be directly given by dsp chip, but the signal that DSP is provided is big that IGBT, which opens the required pwm signal of closing,
It is small limited, can not drive that IGBT's is open-minded, it is therefore desirable to pwm signal is amplified with being isolated, with improve driving force and into
The effect of row isolation, IGBT drive amplification circuit diagrams as shown in Figure 3,4 road pwm signals, which first pass through U4 chips, to be come to signal
It is cached, it is ensured that signal sends out consistency, and U1 is a toggle switch in Fig. 3, can be by DSP directly to signal
Control U4 break-makes can also control the break-make of U4 manually by U1 toggle switch, and U2 and U5 are two isolating chips, can be right
Pwm signal carries out front and rear isolation, ensures that high-power circuit below will not have an impact the control circuit of front, prevents
Forceful electric power influences the phenomenon that control circuit occurs crashing or burn out.The signal isolated is also needed to through a driving chip
IGBT can be just given to, the U3 in Fig. 3 and U6 is exactly two driving chips, and a driving chip can handle two-way PWM wave, driving
Chip can improve the driving force of PWM wave.
PWM wave appearance mistake causes IGBT is opened to cause confusion in order to prevent, short circuit is caused to be burned out, so driving
It also needs to judge 4 tunnel PWM waves by U7 chips before dynamic chip, the 6 of U7 chips are drawn when PWM mistakes are judged
Foot will signal to feed two driving chips of U3 and U6, pwm signal be prevented to continue to send out, to play the work of protection to circuit
With.
It is exactly required high-frequency alternating current that the inversion of H bridges, which comes out,.Then by can be directly to after matching network
Enter to energy converter, but alternating current at this time is square wave, due to square wave voltage when exchanging electric current will appear very high frequency
Shake, therefore also carried out waveform transformation in the present invention, in order to which square wave is transformed into sine wave when waveform converts, electricity in this way
Stream just more stable, the work that energy converter also could be more stable.
Since working condition and power to energy converter being needed control and track in real time, the present invention is changed in access
Sampling tracking can be carried out to its high frequency voltage and electric current when device.Then the signal sampled has been carried out at two kinds respectively
Reason, a kind of is the conversion of virtual value, because sampled signal is the AC signal of the equal proportion identical with actual signal, it is therefore desirable to
RMS-DC converter is carried out to it, is on the one hand to calculate the size of power, it on the other hand can be according to current effective value
Size goes to judge the working condition of energy converter, this is a kind of detection to energy converter working condition.Another processing is to carry out
The identification of phase, by sampled signal by going to phase discriminator, phase detector circuit as shown in Figure 4 after Zero-cross comparator.Zero-cross comparator
Square wave afterwards obtains the phase difference size of voltage and electric current after XOR gate chip U8, U12, and chip U10 is a trigger,
It can be used for judging electric current and voltage which in advance, then be represented away by Q pin, the output signal and U8, U12 of U10 is different
Or signal with door chip U9, U11 by can be obtained by required phase signal, then signal is passed to dsp controller
The effect of real-time tracking can be played, ensures that energy converter always works at resonant condition, improves processing performance or weldability
Energy.
The result that RMS-DC converter comes out can also by owing, overvoltage/stream be protected, when occur under-voltage/flow when
Time then shows that work is in invalid state, belongs to abnormality, therefore can be given to one alarm signal of dsp controller, occurs
Alarm.Equally when there is overvoltage/stream, for the purposes of protection circuit and ensure that the stabilization such as processing and welding can also provide
Alarm signal is to dsp controller.In addition temperature protection is then by the collected signal of temperature sensor, when the temperature is excessively high
It will appear alarm to ensure that power supply can be constantly in normal operating conditions.
After energy converter is linked into this power supply during use, turn on the power switch, then by searching frequency process, that is, the phase sampled
Potential difference virtual value finds the resonance point of the energy converter by calculation processing, and completion is searched after frequency works and just sent out with the frequency of the resonance point
Going out the PWM wave of corresponding frequency makes energy converter start to work, and uses in the course of work and also will continue to, this is to ensure in the external world
When environment changes, such as load or environment temperature change cause energy converter resonance point to shift, at this time can be by adopting
With to frequency into line trace, to ensure that energy converter is constantly in best resonant condition so that energy converter is capable of stability and high efficiency
Work.
The voltage and electric current of ultrasonic transducer that ultrasonic power circuit provided by the invention is obtained by sampling, according to
The real-time output power of supersonic generator can be obtained after RMS conversion, then passes through single-phase full bridge controllable rectifier module
The output voltage of ultrasonic power is controlled, to control the output power of ultrasonic power in real time so that ultrasonic transducer obtains
Power to be constant, ensure that ultrasonic wave processing or the reliability and stability of welding.
The phase for sampling obtained voltage and electric current is identified and handled, and feeds back to DSP additionally by phase discriminator
Controller effectively can carry out real-time tracking and control to current frequency, and dsp controller judges simultaneously obtained signal
The output of adjustment PWM wave in real time, until voltage and current in phase position, ensures that ultrasonic transducer always works in this way
Resonant condition, i.e. amplitude are maximum, efficiency highest, the best state of performance.
The present invention has the following advantages：
1st, using single-phase full bridge controllable rectifier module, the needs of to meet different capacity and invariable power；
2nd, RCD over-voltage and over-currents circuit protects IGBT；
3rd, it converts to improve transducer vibrations stability by waveform；
4th, feedback control is carried out using DSP, realizes frequency-tracking, improve functional reliability and efficiency；
5th, each parameter is accordingly changed in human-computer interaction, improves use scope；
6th, phase difference feedback is realized by phase detector circuit.
In the present invention, as being applied to the ultrasonic transducer in rotation, then between power supply and ultrasonic transducer
Rotary transformer may be used, but needed when in use in centre plus matching capacitance.
The present invention is not limited to above-mentioned preferred forms, anyone structure change made under the enlightenment of the present invention,
The technical schemes that are same or similar to the present invention are each fallen within protection scope of the present invention.
Claims (8)
1. a kind of ultrasonic power circuit, which is characterized in that including power conversion modules, drive control and display module and adopt
Sample and protection module；The sampling is sampled and is sent in real time to the voltage and current of ultrasonic transducer with protection module
The drive control and display module；The drive control, which is handled the sampled signal received with display module, to be surpassed
The real-time output power of acoustic wave transducer and vibration frequency, and it is sent to the power conversion modules；
The power conversion modules are according to the output power of the ultrasonic transducer received, to the output voltage of ultrasonic power
It is controlled in real time, the output power of ultrasonic transducer is adjusted to steady state；The power conversion modules are to receiving
Ultrasonic transducer vibration frequency, compensate and correct in real time, ultrasonic transducer is made to remain operating in resonant condition.
2. ultrasonic power circuit as described in claim 1, which is characterized in that the power conversion modules include single-phase full bridge
Controlled rectification unit, wave filter, IGBT high frequency full-bridge inverting units and net mate unit, by single-phase full bridge controlled rectification
The direct current of unit obtains stable direct current by filter filtering, IGBT high frequency full-bridge inverting units to stable direct current at
Reason obtains the square wave of required supersonic frequency, then matched with ultrasonic transducer by net mate unit, to meet
Power and resonance between ultrasonic power and ultrasonic transducer match.
3. ultrasonic power circuit as claimed in claim 2, which is characterized in that the power conversion modules further include protection electricity
Road RCD and the waveform converter unit being arranged between net mate unit and ultrasonic transducer, RCD pairs of the circuit of protection
IGBT high frequency full-bridge inverting units are protected；Square wave is transformed into string wave by the waveform converter unit.
4. ultrasonic power circuit as claimed in claim 2, which is characterized in that the drive control and display module include every
Release DAC, IGBT drive amplification unit and dsp controller；
The varying level control signal that the dsp controller is sent out exports voltage stabilizing by isolated form DAC, described single-phase for controlling
The output voltage size of full-bridge controlled rectification unit；
The PWM wave that the dsp controller is sent out is after the amplification of IGBT drive amplifications unit, for controlling the IGBT high frequencies complete
The IGBT of bridge inversion unit is opened and is turned off；Wherein, the frequency for the PWM wave that the dsp controller is sent out passes through sampling and protection
It is calculated after module samples processing.
5. ultrasonic power circuit as claimed in claim 4, which is characterized in that the drive control is further included with display module
PC communication units, man-machine interaction unit and alarm lamp, the dsp controller are realized logical with PC by PC communication units
News；The function of human-computer interaction is realized by man-machine interaction unit；When fault, light alarm lamp and sent out to operating personnel
Send alarm signal.
6. ultrasonic power circuit as claimed in claim 5, which is characterized in that the sampling includes high-frequency electrical with protection module
Pressure or current sample tracking cell and RMS conversion device, high frequency voltage or current sample tracking cell are to ultrasonic transducer
Voltage and current sampled in real time, and sampled signal is sent to RMS conversion device and is converted, by what is got
The output power size of ultrasonic transducer is input to dsp controller.
7. ultrasonic power circuit as claimed in claim 6, which is characterized in that the sampling further includes circuit with protection module
Whether protection location and phase discriminator, the circuit protection unit are normal according to the transformation result decision circuitry of RMS conversion device
It works and is accordingly protected；Phase discriminator analyzes and processes sampled signal, judges the voltage and electric current of ultrasonic transducer
Whether same-phase, and result is fed back into dsp controller to control the transmission of PWM wave.
8. ultrasonic power circuit as claimed in claim 7, which is characterized in that further include as the drive control and display mould
Block and the auxiliary power module of sampling and protection module power supply, the auxiliary power module include rectification filtering unit and flyback
Formula transformer, the rectification filtering unit are sent to the flyback transformer after carrying out rectifying and wave-filtering to alternating current；The flyback
Formula transformer use multiple-channel output, be the isolated form DAC, dsp controller, IGBT drive amplifications unit, man-machine interaction unit,
RMS conversion device, phase discriminator and high frequency voltage or current sample tracking cell are powered.
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| CN201810121563.4A CN108233745A (en) | 2018-02-07 | 2018-02-07 | A kind of ultrasonic power circuit |
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| CN201810121563.4A CN108233745A (en) | 2018-02-07 | 2018-02-07 | A kind of ultrasonic power circuit |
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| CN110401375A (en) * | 2019-07-29 | 2019-11-01 | 西南科技大学 | A kind of high-voltage piezoelectric ceramic driving power supply and control method |
| CN111193437A (en) * | 2018-11-15 | 2020-05-22 | 北京自动化控制设备研究所 | Ultrasonic motor LC resonance matching circuit with feedback loop |
| CN111817711A (en) * | 2020-07-09 | 2020-10-23 | 杭州国彪超声设备有限公司 | Frequency tracking method of ultrasonic processing system |
| CN111865110A (en) * | 2020-08-13 | 2020-10-30 | 广州道一科学技术有限公司 | Electrophoresis power supply |
| CN113904569A (en) * | 2021-10-20 | 2022-01-07 | 杭州茂葳科技有限公司 | Ultrasonic drive circuit |
| CN114362550A (en) * | 2021-12-29 | 2022-04-15 | 广州市昊志机电股份有限公司 | Ultrasonic power supply apparatus and control method thereof |
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| CN111193437B (en) * | 2018-11-15 | 2022-04-12 | 北京自动化控制设备研究所 | Ultrasonic motor LC resonance matching circuit with feedback loop |
| CN110401375A (en) * | 2019-07-29 | 2019-11-01 | 西南科技大学 | A kind of high-voltage piezoelectric ceramic driving power supply and control method |
| CN111817711A (en) * | 2020-07-09 | 2020-10-23 | 杭州国彪超声设备有限公司 | Frequency tracking method of ultrasonic processing system |
| CN111817711B (en) * | 2020-07-09 | 2024-01-30 | 杭州国彪超声设备有限公司 | Frequency tracking method of ultrasonic processing system |
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| CN114362550A (en) * | 2021-12-29 | 2022-04-15 | 广州市昊志机电股份有限公司 | Ultrasonic power supply apparatus and control method thereof |
| CN114653565A (en) * | 2022-03-25 | 2022-06-24 | 广州市弘健生物医用制品科技有限公司 | Ultrasonic wave biomaterial welding machine circuit and self-adaptation resonant circuit |
| CN116667275A (en) * | 2023-07-28 | 2023-08-29 | 深圳洁盟技术股份有限公司 | Intelligent matrix type medical cleaning system equipment overcurrent protection system |
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