CN108988680A - A kind of adjustable pressure stabilizing high drive power supply - Google Patents
A kind of adjustable pressure stabilizing high drive power supply Download PDFInfo
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- CN108988680A CN108988680A CN201710406972.4A CN201710406972A CN108988680A CN 108988680 A CN108988680 A CN 108988680A CN 201710406972 A CN201710406972 A CN 201710406972A CN 108988680 A CN108988680 A CN 108988680A
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- 230000000087 stabilizing effect Effects 0.000 title claims abstract description 12
- 238000002955 isolation Methods 0.000 claims abstract description 6
- 238000004891 communication Methods 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 description 5
- 239000013078 crystal Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009123 feedback regulation Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003199 nucleic acid amplification 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
- H02N2/065—Large signal circuits, e.g. final stages
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- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
Present invention relates particularly to a kind of adjustable pressure stabilizing high-voltage driving circuits, including driving power part and control section composition, it is characterised in that: the driving power is powered to piezo actuator, and the control section controls DC output power；The driving power includes N number of driving power unit connection；The driving power unit includes an isolation linear amplifier and two power amplifiers；Isolation linear amplifier, which is located at, is isolated two power amplifiers between two power amplifiers and two power amplifiers is made to constitute bridge circuit；Each power amplifier be isolated between linear amplifier by resistance connect；It is cascaded between the driving power unit by the way that linear amplifier is isolated.The present invention is simple, at low cost, small in size, voltage output is high-efficient, can provide certain driving current for load, meet the power reguirements of piezo actuator.
Description
Technical field
The invention belongs to integrated circuit fields, and in particular to a kind of adjustable pressure stabilizing high-voltage driving circuit.
Background technique
Piezo-electric crystal surface in the case where being under pressure can generate charge, and the quantity of electric charge is directly proportional to the pressure, this phenomenon
Referred to as piezoelectric effect piezoelectric effect has converse function, i.e., under the action of an external electric field, piezo-electric crystal can be deformed, thus defeated
The basic principle of displacement piezoelectric actuator work is exactly the inverse piezoelectric effect using piezo-electric crystal to piezoelectric ceramics accordingly out
Heap applies voltage, and elongation is proportional with driving voltage, and the output displacement of piezoelectric actuator is all piezoelectric ceramic pieces
The summation of elongation, output displacement and application voltage meet equation:
Δ L=nd33V
Δ L is piezoelectric stack total deformation in equation, and n is piezoelectric ceramics the piece number in piezoelectric stack, and V is load electricity
Press the d of .PZT piezoceramic material33Generally (500--600) × 10- 12M/V.
Currently, mainly having two major classes to the driving method of piezoelectric ceramic actuator: one kind is voltage driving mode, another kind of
For current driver mode.Wherein voltage driven type power supply mainly has switching regulator based on DC converting principle and based on Linear Amplifer
Two kinds of forms of direct current amplifying type.Wherein switched mode voltage type source power loss is small, high-efficient, small in size, but High-frequency Interference
Larger, power supply output ripple is larger, and Hz-KHz is narrow;The direct current amplifying type voltage drive power linearity is relatively good, output ripple
Small, power supply architecture is also relatively simple, and driving is convenient, but that there are power dissipation is excessive, efficiency is relatively low, bad dynamic performance is asked
Topic.And under high-speed cruising state, the problem of generally existing carrying load ability of voltage-type power supply is remarkably decreased.And at present
Widely applied high drive power supply is based on high pressure amplifier more, and output power is very limited, significantly limits the negative of power supply
Loading capability.
In order to improve dynamic characteristic of the piezoelectric ceramic actuator driving power under high voltage output and the band under high frequency
Loading capability, improves Hz-KHz, and the present invention proposes a kind of adjustable pressure stabilizing high drive power supply.
Summary of the invention
Technical problem to be solved:
A kind of adjustable pressure stabilizing high drive power supply, the dynamic characteristic under high voltage output and the load capacity under high frequency compare
It is good, and its Hz-KHz is larger.
Technical solution:
A kind of adjustable pressure stabilizing high drive power supply, including driving power part and control section composition, it is characterised in that: the drive
Dynamic power supply is powered to piezo actuator, and the control section controls DC output power；
The driving power includes N number of driving power unit connection；The driving power unit includes an isolation Linear Amplifer
Device and two power amplifiers；Linear amplifier is isolated to be located at two power amplifier isolation between two power amplifiers simultaneously
Two power amplifiers are made to constitute bridge circuit；Each power amplifier be isolated between linear amplifier by resistance connect
It connects；It is cascaded between the driving power unit by the way that linear amplifier is isolated.
The control section includes control chip, voltage follower, resistance R1, R2；The R1 connect with R2 after with piezoelectricity
Brake is in parallel, and voltage follower acquires R1, and collected voltage signal is simultaneously transmitted to voltage follow by the voltage shared on R2
The information input taken is controlled chip by device, the voltage follower.
Further, the control chip is STM32f103vc, and the control chip is also connected with communication chip, described
Control chip is also connected with charactron with downloading mouth；The communication chip includes 485 communication chips or/and RS232 chip.
Further, the voltage follower is OPA333 chip, and OPA333 chip passes through the port AD and STM32f103vc
It is connected.
Further, the R1 is 124k Ω, the resistance that precision is 0.1%；R1 is 2k Ω, the resistance that precision is 0.1%.
In driving power part, two power amplifiers are isolated using isolated amplifier, are conveniently used for more
The cascade of group driving power unit.Two power amplifiers carry out bridge circuit in each driving power unit, then export
Twice of single amplifier when voltage, and its conversion speed doubles；And two amplifier nonlinearities are also symmetrical
's.Second harmonic distortion can be further decreased relative to single amplifier；And the input/output terminal of each power amplifier is equal
Using the discrete component building of connection resistance mode.
In control section, the present invention is by precision 0.1%, resistance using circuit voltage tracking and feedback regulation part
Resistance value is that the resistance of 2K, 124K and voltage follower OPA333 are formed respectively, will be straight with circuit after the series connection of above 2 resistance
Output par, c parallel connection is flowed, the voltage at 2K resistance both ends is acquired according to electric resistance partial pressure principle, voltage acquisition range is 0-3.226V
, collected voltage signal is inputted to the AD of master chip STM32f103vc through voltage follower OPA333
Port, and then tracking and feedback regulation are carried out to the voltage swing being applied in piezoelectric pile.
The utility model has the advantages that
The configuration of the present invention is simple, at low cost, small in size, voltage output is high-efficient, can provide certain driving current for load, full
The power reguirements of sufficient piezo actuator.
Detailed description of the invention
Overall construction drawing Fig. 1 of the invention；
Fig. 2 is the circuit diagram of single driving unit:
Fig. 3 is the circuit diagram of driving power.
Specific embodiment
The present invention will be described with reference to the accompanying drawing.
As shown in Figure 1, a kind of adjustable pressure stabilizing high drive power supply, including driving power part and control section composition.Its
Middle R1, R2 are to carry out voltage-tracing and feedback regulation to driving power；Voltage-tracing device controls chip STM32f103vc, and
The device being connected on control chip STM32f103vc is to control section.
As shown in Figure 2 is a unit driving power in driving power, and shown driving power is at least one unit
Driving power is cascaded.Two differential mode output ends of isolated amplifier access two power amplifiers and constitute plus-minus in Fig. 2
Computing circuit, the output using principle of stacking the two power amplifiers in the ideal case are
For simplicity, following constraint condition can use based on formula (1) one (3):
The constraint condition of (4) formula of utilization, the output amplitude of two power amplifiers is equal, and opposite in phase, this makes it possible to obtain twice
In single amplification
The output voltage amplitude of device.If the gain amplifier of isolated amplifier is Aiso, then output voltage Vout, with input voltage
The relationship of Vin are as follows:
It is illustrated in figure 3 the circuit diagram of driving power, it, can will be more as can be seen from the figure under the buffer action of isolated amplifier
A floating ground driving unit is cascaded.The frequency response characteristic of entire driving power and dynamic response characteristic will mainly depend at this time
In the performance of each independent low-voltage driving power supply, flexibility with higher and broader frequency range, total output voltage
Equal to the sum of each separate unit output voltage.
Although the present invention has been described by way of example and in terms of the preferred embodiments, they be not it is for the purpose of limiting the invention, it is any ripe
This those skilled in the art is practised, without departing from the spirit and scope of the invention, can make various changes or retouch from working as, therefore guarantor of the invention
Shield range should be subject to what claims hereof protection scope was defined.
Claims (4)
1. a kind of adjustable pressure stabilizing high drive power supply, including driving power part and control section composition, it is characterised in that: described
Driving power is powered to piezo actuator, and the control section controls DC output power；
The driving power includes N number of driving power unit connection；The driving power unit includes an isolation Linear Amplifer
Device and two power amplifiers；Linear amplifier is isolated to be located at two power amplifier isolation between two power amplifiers simultaneously
Two power amplifiers are made to constitute bridge circuit；Each power amplifier be isolated between linear amplifier by resistance connect
It connects；It is cascaded between the driving power unit by the way that linear amplifier is isolated；
The control section includes control chip, voltage follower, resistance R1, R2；The R1 is braked after connecting with R2 with piezoelectricity
Device is in parallel, and voltage follower acquires R1, and collected voltage signal is simultaneously transmitted to voltage follower by the voltage shared on R2, institute
It states voltage follower and the information input taken is controlled into chip.
2. a kind of adjustable pressure stabilizing high drive power supply according to claim 1, it is characterised in that: the control chip is
STM32f103vc, the control chip are also connected with communication chip, and the control chip is also connected with charactron with downloading mouth；
The communication chip includes 485 communication chips or/and RS232 chip.
3. a kind of adjustable pressure stabilizing high drive power supply according to claim 1, it is characterised in that: the voltage follower is
OPA333 chip, OPA333 chip are connected by the port AD with STM32f103vc.
4. a kind of adjustable pressure stabilizing high drive power supply according to claim 1, it is characterised in that: the R1 is 124k Ω,
The resistance that precision is 0.1%；R1 is 2k Ω, the resistance that precision is 0.1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710406972.4A CN108988680A (en) | 2017-06-02 | 2017-06-02 | A kind of adjustable pressure stabilizing high drive power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710406972.4A CN108988680A (en) | 2017-06-02 | 2017-06-02 | A kind of adjustable pressure stabilizing high drive power supply |
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| Publication Number | Publication Date |
|---|---|
| CN108988680A true CN108988680A (en) | 2018-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710406972.4A Pending CN108988680A (en) | 2017-06-02 | 2017-06-02 | A kind of adjustable pressure stabilizing high drive power supply |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4990835A (en) * | 1989-06-27 | 1991-02-05 | Alps Electric Co., Ltd. | Automotive motor-driven device controlling and driving system |
| CN101404466A (en) * | 2008-11-05 | 2009-04-08 | 哈尔滨工业大学 | Disresonance adapting circuit and piezoelectrical device driver using the same |
| CN105156316A (en) * | 2015-09-28 | 2015-12-16 | 吉林大学 | Testing device for performance of piezoelectric pump |
| CN205123691U (en) * | 2015-11-26 | 2016-03-30 | 哈尔滨理工大学 | High pressure cascade amplification ware device based on buffer |
| CN206039221U (en) * | 2016-09-06 | 2017-03-22 | 吉林大学 | Piezoelectricity ejection point glues drive control device of equipment |
-
2017
- 2017-06-02 CN CN201710406972.4A patent/CN108988680A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4990835A (en) * | 1989-06-27 | 1991-02-05 | Alps Electric Co., Ltd. | Automotive motor-driven device controlling and driving system |
| CN101404466A (en) * | 2008-11-05 | 2009-04-08 | 哈尔滨工业大学 | Disresonance adapting circuit and piezoelectrical device driver using the same |
| CN105156316A (en) * | 2015-09-28 | 2015-12-16 | 吉林大学 | Testing device for performance of piezoelectric pump |
| CN205123691U (en) * | 2015-11-26 | 2016-03-30 | 哈尔滨理工大学 | High pressure cascade amplification ware device based on buffer |
| CN206039221U (en) * | 2016-09-06 | 2017-03-22 | 吉林大学 | Piezoelectricity ejection point glues drive control device of equipment |
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Application publication date: 20181211 |
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