CN106301068B - A kind of digital driving power - Google Patents
A kind of digital driving power Download PDFInfo
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- CN106301068B CN106301068B CN201511017675.8A CN201511017675A CN106301068B CN 106301068 B CN106301068 B CN 106301068B CN 201511017675 A CN201511017675 A CN 201511017675A CN 106301068 B CN106301068 B CN 106301068B
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- 239000000919 ceramic Substances 0.000 claims abstract description 30
- 230000003321 amplification Effects 0.000 claims abstract description 14
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 14
- 238000004088 simulation Methods 0.000 claims description 15
- 238000013341 scale-up Methods 0.000 claims description 13
- 230000005669 field effect Effects 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 6
- 239000004065 semiconductor Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000004364 calculation method Methods 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000003990 capacitor Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 206010037660 Pyrexia Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/02—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors
- H02N2/06—Drive circuits; Control arrangements or methods
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Abstract
The present invention relates to Piezoelectric Ceramic control technology fields, specifically disclose a kind of digital driving power.The digital driving power that the present invention designs, improve the low frequency characteristic of high-voltage amplifier using current amplification circuit first, secondly use D/A converting circuit as the interface of analog signal and digital signal, the numerically controlled circuit of low-power consumption is recycled to realize the realization to algorithm and digital control section, have that structure is simple, the flexible feature of built-up circuit；It is good to be provided simultaneously with dynamic property, exports the advantages that electric current is big, may be implemented to the digital control of output voltage.
Description
Technical field
The present invention relates to Piezoelectric Ceramic control technology field, in particular to a kind of digital driving power.
Background technique
The occasion of optics and precision machinery requires higher displacement resolution, their required precision energy to movement position
Reach Nano grade, principle of the piezoelectric ceramics according to piezoelectric effect is sintered using special piezoelectric material, has volume
Small, the features such as displacement resolution is high, dynamic property is good, fever is small, have in the occasion of high-precision nanometer positioning very wide
General application.
Generally for the performance for giving full play to piezoelectric ceramics, piezoelectric ceramics needs to be equipped with high-precision Piezoelectric Ceramic electricity
Source, piezoelectric ceramics power supply finally determine the displacement accuracy of piezoelectric ceramics.In current drive power supply for piezoelectric ceramics, mainly there is two
Kind design scheme: voltage control scheme and Charge controlled scheme.Wherein, Charge controlled scheme can effectively compensate piezoelectric ceramics
Hysteresis characteristic, become the hot spot of current research, but Charge controlled scheme also has the shortcomings that dynamic property is not high；Charge controlled
Scheme has good dynamic property, and flexibly, this method is widely used in Piezoelectric Ceramic for the software and hardware compensation of circuit.
In drive power supply for piezoelectric ceramics solution, APEX company develops a series of high voltage operational amplifier, passes through
The high voltage operational amplifier can easily form drive power supply for piezoelectric ceramics, the piezoelectric ceramics power supply of composition have it is small in size,
The advantages that heat dissipation design facilitates；But the low frequency performance of high voltage operational amplifier is poor, feelings especially bigger in calorific value
Under condition, the low-frequency noise that temperature change introduces is degrading the performance of circuit, it is made to be difficult to form high-precision Piezoelectric Ceramic
Power supply.
Summary of the invention
The present invention is directed to overcome the deficiencies of existing technologies, a kind of digital driving power is provided.
To achieve the above object, the invention adopts the following technical scheme:
Digital control circuit, for the input of user to be converted to digital controlled signal；
D/A converting circuit is electrically connected with the digital control circuit, for the digital controlled signal to be converted to mould
Quasi- signal；
Simulation scale-up circuit is electrically connected with the D/A converting circuit, for amplifying to obtain the analog signal
Driving signal uses for the piezoelectric ceramics.
In some embodiments, the power supply further include:
Charge-discharge circuit is electrically connected with the Simulation scale-up circuit, for stablizing the driving signal for the piezoelectricity
Ceramics use.
In other embodiments, the Simulation scale-up circuit includes:
High voltage amplifier circuit and current amplification circuit,
The high voltage amplifier circuit includes PA95 high voltage linear amplifier；
The current amplification circuit includes the biasing circuit and use for reducing the Simulation scale-up circuit intermodulation distortion
In the field-effect tube amplified to the analog signal, the biasing circuit is defeated with the PA95 high voltage linear amplifier
Positive pole and the electrical connection of out-put supply cathode, the biasing circuit and institute out
The beneficial effects of the present invention are: have that structure is simple, and built-up circuit is flexible, it is good to be provided simultaneously with dynamic property, defeated
The advantages that electric current is big out may be implemented to the digital control of output voltage.
Detailed description of the invention
Fig. 1 is the circuit module figure of digital driving power one embodiment according to the present invention.
Fig. 2 is the circuit connection diagram of digital driving power one embodiment according to the present invention.
Fig. 3 is the System Control Figure according to digital driving power one embodiment of the present invention.
Fig. 4 is the test chart according to digital driving power one embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing and specific implementation
Example, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only to explain this hair
It is bright, but not to limit the present invention.
As shown in connection with fig. 1, the present invention provides a kind of digital driving power, comprising:
Digital control circuit 1, for the input of user to be converted to digital controlled signal；
D/A converting circuit 2 is electrically connected with the digital control circuit 1, for being converted to the digital controlled signal
Analog signal；
Simulation scale-up circuit 3 is electrically connected with the D/A converting circuit 2, for amplifying the analog signal
To driving signal so that the piezoelectric ceramics uses.
Digital control circuit 1 can use DSP digital control circuit 1, the input of user can be converted to digital command,
So that D/A converting circuit 2 carries out digital-to-analogue conversion operation.
Specifically analog voltage can be converted to by the digital command of digital control circuit 1 for D/A converting circuit 2, by mould
Quasi- voltage carries out voltage amplification by Simulation scale-up circuit 3 to drive piezoelectric ceramics.
Simulation scale-up circuit 3 includes:
High voltage amplifier circuit and current amplification circuit,
The high voltage amplifier circuit includes PA95 high voltage linear amplifier；
The current amplification circuit includes the biasing circuit and use for reducing 3 intermodulation distortion of Simulation scale-up circuit
In the field-effect tube amplified to the analog signal, the biasing circuit is defeated with the PA95 high voltage linear amplifier
Positive pole and the electrical connection of out-put supply cathode, the biasing circuit are electrically connected with the field-effect tube out, the field-effect tube
Voltage output end connect with the piezoelectric ceramics, the voltage input end of the PA95 high voltage linear amplifier and the digital-to-analogue
The input terminal of conversion circuit 2 connects, the electricity of the positive terminal of the biasing circuit and the PA95 high voltage linear amplifier
The connection of source anode, the negative terminals of the biasing circuit are connect with the power cathode of the PA95 high voltage linear amplifier.
Join shown in Fig. 2, specifically, high voltage amplifier circuit is constituted using PA95 high voltage linear amplifier, PA95 high electricity
Press noninverting input, that is, pin 1 of linear amplifier as control voltage input, C1 and R3 are PA95 high voltage linear amplifiers
The indispensable device of composition, respectively to carry out frequency compensation and output current limit, high voltage amplifier circuit also can be used other
The PA series high voltage operational amplifier of same type.The current amplification circuit of circuit is by D1, D2, R1, R2, R5, R6, M1 and M2 structure
At, R1, R2, R5, R6, D1 and D2 constitute metal-oxide-semiconductor biasing circuit, mainly to reduce the intermodulation distortion of current amplification circuit,
M1 and M2 is powerful field-effect tube, main to complete Current amplifier task, and resistance R7 and R8 constitute resistor voltage divider network, electricity
Resistance R7 and R8 series connection is latter to be terminated on output voltage VO UT, other end ground connection, the junction of resistance R7 and R8 and PA95
The backward end of high voltage linear amplifier connects.
It can be equivalent to the capacitor of a μ F rank and the resistor coupled in parallel of M Ω rank, mould on circuit due to piezoelectric ceramics
The capacitor that quasi- amplifier directly drives large capacity will appear stability problem, and in order to solve this problem, present invention employs strings
Join the technical characteristic of charge-discharge circuit 4, specifically, charge-discharge circuit 4 is electrically connected with Simulation scale-up circuit 3, and charge-discharge circuit 4 can
Think the one powerful resistance of series connection between piezoelectric ceramics and Simulation scale-up circuit 3, the used of load can be effectively reduced
Property, enhance the stability of system.
Optionally, metal-oxide-semiconductor M1 is IXTA10N60P high-voltage MOS pipe, and metal-oxide-semiconductor M2 is IXTH10N60 high-voltage MOS pipe；Resistance
R2, R5, R7 and R8 are Chip-R, and resistance R3 and R4 are high-power resistance, and resistance R1 and R6 are variable resistance, variation range
Be 1N4148 diode for 0-200k, D1 and D2, in high voltage amplifier circuit capacitor C1 be ceramic condenser, the 1 of high voltage amplifier circuit
Foot and 2 feet are respectively the noninverting input and reverse input end of amplifying circuit, and 4 feet are the output of high voltage amplifier circuit, 5 feet and 6
Foot is the high voltage supply end of high voltage amplifier circuit, and 3 feet are current-limiting resistance connecting pin, and 7 feet and 8 feet are compensating electric capacity connecting pin；
VOUT is the output end of high voltage amplifier circuit；VCC is the positive High Voltage Power Supply of high voltage amplifier circuit, and VSS is high voltage amplifier circuit
Negative high-voltage power supply.
Specifically, wherein feedback resistance is respectively R1=150K Ω, R2=10K Ω.
When making digital driving power, can welding circuit first current amplifier stage, swept resistance R1 and R6 are adjusted
To maximum value, VCC and VSS are respectively connected to the voltage of 150V He -150V, adjust the resistance of slide rheostat, make diode D1 and
The voltage value of the junction D2 is 0；Then high voltage amplifier circuit and its accessory circuit (resistance capacitance etc.) are welded, is finally welded other
Partial circuit (charge-discharge circuit etc.), to complete the production of digital driving power.
Hardware configuration presented hereinabove is described below and how to carry out utilizing above-mentioned digital driving power control behaviour
Make, is specifically introduced below.
K1 is realized that it is the digital control algorithm of user's input by digital control circuit, which passes through number
Analog conversion circuit, completes the conversion work of digital to analogy, D/A converting circuit can be used as on the control structure retainer and
Filter K2, high voltage amplifier circuit G1, current amplification circuit G2, charge-discharge circuit G3, H (s) are by resistor network realization, entirely
System transter can indicate with formula (1), Y in publicityN(s) output voltage VO UT is indicated.
P=(VCC-VSS) Is+VoIo (2)
Angle according to power consumption is analyzed, and the power consumption of high voltage amplifier circuit can be stated by formula (2), wherein Is
For the quiescent current of circuit, VoAnd IoThe respectively output voltage of circuit and output electric current.If it can be seen that can drop from formula
Low output electric current, so that it may reduce output power consumption, to reduce the total power consumption of chip, reduce chip calorific value and make chip by
Temperature influences and bring temperature drift reduces.The input current of current amplification circuit is small, can effectively reduce high voltage amplifier circuit
Power consumption, so as to improve the thermal stability of system.
In conjunction with as indicated at 4, in Piezoelectric Ceramic, in the control structure of Fig. 3, H (s) feedback factor can be 16, this
Sample just constitutes the digital driving power that amplification factor is 16 times.Program is write in digitial controller, passes through digital-to-analogue conversion electricity
Small square wave occurs for road, using the voltage waveform of oscillograph detection voltage output end, obtains waveform diagram as shown in figure 4, dividing
Input voltage and the corresponding waveform diagram of output voltage are analysed, is better than 10mV by observing available digital driving power resolution ratio.
Digital driving power provided by the invention adequately considers the control structure of system, according to heat analysis principle and
It proposes, has that structure is simple, and built-up circuit is flexible, be provided simultaneously with the advantages that dynamic property is good, and output electric current is big, may be implemented pair
Piezoelectric ceramics it is digital control.
The above described specific embodiments of the present invention are not intended to limit the scope of the present invention..Any basis
Any other various changes and modifications made by technical concept of the invention should be included in the guarantor of the claims in the present invention
It protects in range.
Claims (6)
1. a kind of digital driving power, which is characterized in that be used for piezoelectric ceramics, the power supply includes:
Digital control circuit, for the input of user to be converted to digital controlled signal；
D/A converting circuit is electrically connected with the digital control circuit, for the digital controlled signal to be converted to simulation letter
Number；
Simulation scale-up circuit is electrically connected with the D/A converting circuit, is driven for amplifying the analog signal
Signal uses for the piezoelectric ceramics；The Simulation scale-up circuit includes: high voltage amplifier circuit and current amplification circuit, institute
Stating high voltage amplifier circuit includes PA95 high voltage linear amplifier；The current amplification circuit includes putting for reducing the simulation
The biasing circuit of circuit intermodulation distortion and the field-effect tube for being amplified to the analog signal greatly, the biasing circuit
It is electrically connected with the out-put supply anode of the PA95 high voltage linear amplifier and out-put supply cathode, the biasing circuit and institute
Field-effect tube electrical connection is stated, the voltage output end of the field-effect tube is connect with the piezoelectric ceramics；The biasing circuit includes
Resistance R1, resistance R2, resistance R5, resistance R6, diode D1 and diode D2；The voltage of the PA95 high voltage linear amplifier
Input terminal is connect with the input terminal of the D/A converting circuit 2, the positive terminal of the biasing circuit and the PA95 high electricity
Press the positive pole connection of linear amplifier, the negative terminals of the biasing circuit and the PA95 high voltage linear amplifier
Power cathode connection；Resistance R7 and R8 constitute resistor voltage divider network, and resistance R7 and R8 series connection are latter to terminate to output
On voltage VOUT, other end ground connection, the junction of resistance R7 and R8 are connect with the backward end of PA95 high voltage linear amplifier；
The resistance R2 and resistance R5 is Chip-R, and the resistance R1 and the resistance R6 are adjustable resistance, institute
Stating the diode D1 and diode D2 is zener diode；Wherein feedback resistance is respectively R1=150K Ω, R2=10K Ω；
When making digital driving power, swept resistance R1 and R6 are adjusted to maximum value by the current amplifier stage of welding circuit first,
VCC and VSS is respectively connected to the voltage of 150V He -150V, adjusts the resistance of slide rheostat, makes the junction diode D1 and D2
Voltage value is 0；Then high voltage amplifier circuit and its accessory circuit are welded, the circuit of other parts is finally welded, wherein VVC is
The positive High Voltage Power Supply of high voltage amplifier circuit, VSS are that the negative high-voltage of high voltage amplifier circuit is powered；
When controlling digital driving power work, K1 is realized by digital control circuit, digital control calculation input by user
Method completes the conversion work of digital to analogy, D/A converting circuit is on the control structure as holding by D/A converting circuit
Device and filter K2, high voltage amplifier circuit G1, current amplification circuit G2, charge-discharge circuit G3, H (s) by resistor network realize,
The transmission function of whole system can indicate with formula (1), Y in publicityN(s) output voltage VO UT is indicated；
P=(VCC-VSS) Is+VoIo (2)
The power consumption of high voltage amplifier circuit is stated by formula (2), wherein IsFor the quiescent current of circuit, VoAnd IoRespectively circuit
Output voltage and output electric current.
2. digital driving power as described in claim 1, which is characterized in that the power supply further include:
Charge-discharge circuit is electrically connected with the Simulation scale-up circuit, for stablizing the driving signal for the piezoelectric ceramics
It uses.
3. digital driving power as described in claim 1, which is characterized in that the biasing circuit is metal-oxide-semiconductor biasing circuit, institute
Stating field-effect tube is metal-oxide-semiconductor.
4. digital driving power as claimed in claim 3, which is characterized in that the zener diode is 1N4148 diode,
The metal-oxide-semiconductor is IXTH10N60 high-voltage MOS pipe.
5. digital driving power as described in claim 1, which is characterized in that the feedback factor of the high voltage amplifier circuit is
16。
6. digital driving power as claimed in claim 2, which is characterized in that the charge-discharge circuit includes a resistance, described
Resistance and piezoelectric ceramics series connection.
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| CN201511017675.8A CN106301068B (en) | 2015-12-29 | 2015-12-29 | A kind of digital driving power |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201511017675.8A CN106301068B (en) | 2015-12-29 | 2015-12-29 | A kind of digital driving power |
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| CN106301068A CN106301068A (en) | 2017-01-04 |
| CN106301068B true CN106301068B (en) | 2019-03-29 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109471482B (en) * | 2018-09-12 | 2020-02-14 | 华中科技大学 | Bipolar multi-path isolated output high-voltage signal amplification system |
| CN112953422B (en) * | 2021-04-19 | 2023-02-10 | 中国科学院长春光学精密机械与物理研究所 | Power amplifier and integrated piezoelectric ceramic driver |
| CN114356007B (en) * | 2021-12-06 | 2024-03-05 | 武汉华中天经通视科技有限公司 | High-voltage high-power piezoelectric ceramic driving circuit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101043186A (en) * | 2006-11-09 | 2007-09-26 | 重庆大学 | Dynamic piezoelectric or electrostrictive ceramic drive power supply |
| JP2010046989A (en) * | 2008-08-25 | 2010-03-04 | Fuji Xerox Co Ltd | Driving circuit for capacitive load, and liquid droplet jetting apparatus |
| CN104242841A (en) * | 2014-09-01 | 2014-12-24 | 中国科学院长春光学精密机械与物理研究所 | Piezoceramics driving amplifying circuit with high precision |
| KR20150059017A (en) * | 2013-11-21 | 2015-05-29 | 삼성전기주식회사 | Apparatus and method for driving piezoelectric actuator, and piezo piezoelectric actuator driving system using the same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150077895A (en) * | 2013-12-30 | 2015-07-08 | 삼성전기주식회사 | Apparatus and method for driving piezoelectric actuator, and piezoelectric using the same |
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- 2015-12-29 CN CN201511017675.8A patent/CN106301068B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101043186A (en) * | 2006-11-09 | 2007-09-26 | 重庆大学 | Dynamic piezoelectric or electrostrictive ceramic drive power supply |
| JP2010046989A (en) * | 2008-08-25 | 2010-03-04 | Fuji Xerox Co Ltd | Driving circuit for capacitive load, and liquid droplet jetting apparatus |
| KR20150059017A (en) * | 2013-11-21 | 2015-05-29 | 삼성전기주식회사 | Apparatus and method for driving piezoelectric actuator, and piezo piezoelectric actuator driving system using the same |
| CN104242841A (en) * | 2014-09-01 | 2014-12-24 | 中国科学院长春光学精密机械与物理研究所 | Piezoceramics driving amplifying circuit with high precision |
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