CN107272558A - A kind of control device of piezoelectric ceramic actuator - Google Patents
A kind of control device of piezoelectric ceramic actuator Download PDFInfo
- Publication number
- CN107272558A CN107272558A CN201710585466.6A CN201710585466A CN107272558A CN 107272558 A CN107272558 A CN 107272558A CN 201710585466 A CN201710585466 A CN 201710585466A CN 107272558 A CN107272558 A CN 107272558A
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- signal
- circuit
- displacement
- piezoelectric ceramic
- ceramic actuator
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/11—Plc I-O input output
- G05B2219/1103—Special, intelligent I-O processor, also plc can only access via processor
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The present invention discloses a kind of control device of piezoelectric ceramic actuator, including：Single-chip microcomputer governor circuit, receives transmission instruction and is parsed and generate control signal；Complex programmable logic device, triangular wave digital voltage drive signal is produced according to control signal；D/A converting circuit, carries out digital-to-analogue conversion by the triangular wave digital voltage drive signal exported by single-chip microcomputer governor circuit, obtains analog voltage signal；Signal amplification circuit, carries out signal amplification by analog voltage signal, is amplified signal；Piezoelectric ceramic actuator, displacement is produced under the driving as the amplified signal of drive voltage signal；Displacement signal acquisition circuit, displacement voltage value is collected based on displacement；And analog to digital conversion circuit, displacement voltage value is subjected to analog-to-digital conversion, data signal is obtained and transmits to the processing of single-chip microcomputer governor circuit to produce new control signal, be added in the two ends of piezoelectric ceramic actuator to correct displacement by new drive voltage signal afterwards.
Description
Technical field
The present invention relates to actuator control field, and in particular to a kind of control device of piezoelectric ceramic actuator.
Background technology
The intrinsic sluggishness of piezoelectric ceramics, creep, the non-linear application for having severely impacted piezoelectric ceramics.Lagging characteristics are exactly
Piezoelectric ceramics is under electric field action, the displacement non-repeatability of boosting curve and drawdown curve.It is non-linear and it is sluggish be influence piezoelectricity
The principal element of ceramic open loop positioning precision.In order to reduce the non-linear and sluggish shadow brought to positioning precision of piezoelectric actuator
Ring, at present frequently with the following manner：(1) voltage driving is replaced using electric charge driving, but special control is needed using this mode
Electric charge multiplying arrangement and need to be in wider frequency range, it is difficult to ensure that the electric charge of piezoelectric ceramics and micro-displacement have good line
Property degree；(2) closed loop feedback control is used, by an additional displacement transducer come measurement and positioning shifting amount, the mesh with controller
Marker displacement carries out contrast correction, constitutes a complicated control adjustment mechanism, but in the manner due to displacement detecting element
, easily there is the concussion of system and unstable, its compensation precision can not be very in the influence of the problems such as limitation and control element frequency response
The requirement of superhigh precision location control is met well；(3) open loop location control is used, the carry-out bit of piezoelectric ceramic actuator is utilized
The principle that actuator both end voltage meets linear approximate relationship is moved and is applied to, by controlling the voltage at actuator two ends to control
Output displacement, but under the environment that dynamic application requires higher, the carrying load ability of whole system will be with motion frequency
Rise and be remarkably decreased, the effective bandwidth of system is also obviously reduced, simultaneously as the electricity of uncontrollable piezoelectric ceramic actuator
Stream, if power up transient flow cross piezoelectric ceramic actuator electric current it is very big, it will piezoelectric ceramic actuator is made
Into the damage of unrepairable；And because opened loop control is System design based on model, so we must before opened loop control is carried out
The mathematical modeling of controlled system need be obtained.
The content of the invention
The present invention is carried out to solve the above problems, it is therefore intended that provide a kind of control of piezoelectric ceramic actuator
Device.
The invention provides a kind of control device of piezoelectric ceramic actuator, have the feature that, including：Monolithic owner
Circuit is controlled, the instruction for receiving computer transmission is parsed and generates control signal according to the instruction after parsing；Complex programmable
Logic circuit (CPLD circuit), is communicated to connect with single-chip microcomputer governor circuit, and producing triangular wave digital voltage according to control signal drives
Dynamic signal；D/A converting circuit, is communicated to connect, the triangular wave that will be exported by single-chip microcomputer governor circuit with single-chip microcomputer governor circuit
Digital voltage drive signal carries out digital-to-analogue conversion, obtains analog voltage signal；Signal amplification circuit, analog voltage signal is carried out
Signal amplifies, and is amplified signal；Piezoelectric ceramic actuator, is produced under the driving as the amplified signal of drive voltage signal
Displacement；Displacement signal acquisition circuit, displacement voltage value is collected based on displacement；Analog to digital conversion circuit, by displacement voltage
Value carries out analog-to-digital conversion, obtains data signal and transmits to single-chip microcomputer governor circuit.
In the control device for the piezoelectric ceramic actuator that the present invention is provided, it can also have the feature that：Wherein, it is single
Piece machine governor circuit is handled data signal and generates new control signal, and CPLD circuit is produced according to new control signal
New triangular wave digital voltage drive signal is carried out digital-to-analogue and turned by new triangular wave digital voltage drive signal, D/A converting circuit
Change, obtain new analog voltage signal, new analog voltage signal is carried out signal amplification, obtains new put by signal amplification circuit
Big signal is as the new drive voltage signal of piezoelectric ceramic actuator, and piezoelectric ceramic actuator is in new drive voltage signal drive
New displacement is produced under dynamic to correct displacement error.
In the control device for the piezoelectric ceramic actuator that the present invention is provided, in addition to：Outer random access memory (the piece of piece
Outer RAM), communicate to connect, controlled by single-chip microcomputer governor circuit with single-chip microcomputer governor circuit, the numeral for single-chip microcomputer to be received is believed
Number stored.
In the control device for the piezoelectric ceramic actuator that the present invention is provided, it can also have the feature that：Wherein, position
Shifting signal Acquisition Circuit is displacement transducer.
In the control device for the piezoelectric ceramic actuator that the present invention is provided, it can also have the feature that：Wherein, it is single
Piece machine controls circuit to be STC89C58RD+ single chip machine controlling circuits.
In the control device for the piezoelectric ceramic actuator that the present invention is provided, it can also have the feature that：Wherein, number
Analog conversion circuit is AD5062 D/A converting circuits, and analog to digital conversion circuit is ADS1255 analog to digital conversion circuits.
The effect of invention and effect
According to the control device of piezoelectric ceramic actuator involved in the present invention, because including：Single-chip microcomputer governor circuit,
CPLD circuit, D/A converting circuit, signal amplification circuit, piezoelectric ceramic actuator, displacement signal acquisition circuit, analog-to-digital conversion electricity
Road, so, the instruction that the present invention can receive computer transmission by single-chip microcomputer governor circuit is parsed, and CPLD circuit produces three
Angular wave number word voltage drive signals, then act on piezoelectricity after digital-to-analogue conversion, signal amplification as drive voltage signal again
Ceramic actuator two ends make it produce displacement, then carry out inputting single-chip microcomputer governor circuit after displacement collection, analog-to-digital conversion,
Afterwards, CPLD circuit produces new triangular wave digital voltage drive signal, and then, new drive voltage signal acts on piezoelectricity pottery
Porcelain actuator two ends make it produce new displacement to correct displacement error.
The control device of the piezoelectric ceramic actuator of the present invention, is realized and is closed using the realization of software function alternative hardware function
The function of ring control, the problem of having evaded the concussion that is brought to whole system in hard wired feed back loop and be unstable, evades open loop control
Mathematical modeling needed for system, so as to reduce complexity, therefore the present invention is the characteristics of have simple in construction, simple operation.
Brief description of the drawings
Fig. 1 is the schematic diagram of the control device of piezoelectric ceramic actuator in embodiments of the invention；
Fig. 2 is the flow chart of drive signal generation in embodiments of the invention；
Fig. 3 is displacement signal acquisition and the flow chart of processing in embodiments of the invention；And
Fig. 4 is the flow chart that new drive signal in embodiments of the invention is produced.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, it is real below
Example combination accompanying drawing is applied to be specifically addressed the control device of piezoelectric ceramic actuator of the present invention.
Fig. 1 is the schematic diagram of the control device of piezoelectric ceramic actuator in embodiments of the invention.
As shown in figure 1, the control device 100 of piezoelectric ceramic actuator includes：Single-chip microcomputer governor circuit 10, CPLD circuit
20th, D/A converting circuit 30, signal amplification circuit 40, piezoelectric ceramic actuator 50, displacement signal acquisition circuit 60, analog-to-digital conversion
The outer RAM 80 of circuit 70, piece.
The instruction that single-chip microcomputer governor circuit 10 receives the transmission of computer 200 is parsed and generated according to the instruction after parsing
Control signal.Single chip machine controlling circuit uses STC89C58RD+ single chip machine controlling circuits in the present embodiment.
CPLD circuit 20 is communicated to connect with single-chip microcomputer governor circuit 10, and producing triangular wave digital voltage according to control signal drives
Dynamic signal.
D/A converting circuit 30 is communicated to connect with single-chip microcomputer governor circuit 10, by what is exported by single-chip microcomputer governor circuit 10
Triangular wave digital voltage drive signal carries out digital-to-analogue conversion, obtains analog voltage signal.D/A converting circuit in the present embodiment
For AD5062 D/A converting circuits.
Analog voltage signal is carried out signal amplification by signal amplification circuit 40, is amplified signal；
Piezoelectric ceramic actuator 50 produces displacement under the driving as the amplified signal of drive voltage signal.
Displacement signal acquisition circuit 60 collects displacement voltage value based on displacement；Displacement signal is adopted in the present embodiment
Collector uses displacement transducer.
Displacement voltage value is carried out analog-to-digital conversion by analog to digital conversion circuit 70, is obtained data signal and is transmitted to single-chip microcomputer master control
Circuit 10.Analog to digital conversion circuit is ADS1255 analog to digital conversion circuits in the present embodiment.
Single-chip microcomputer governor circuit 10 is handled data signal and generates new control signal.
CPLD circuit 20 produces new triangular wave digital voltage drive signal according to new control signal.
New triangular wave digital voltage drive signal is carried out digital-to-analogue conversion by D/A converting circuit 30, obtains new simulation electricity
Press signal.
New analog voltage signal is carried out signal amplification by signal amplification circuit 40, obtains new amplified signal as piezoelectricity
The new drive voltage signal of ceramic actuator.
Piezoelectric ceramic actuator 50 produces new displacement to correct displacement error under new drive voltage signal driving.
Below in conjunction with Fig. 2~Fig. 4 flow chart, the workflow to the present invention is elaborated, and Fig. 2 is the reality of the present invention
Apply the flow chart that drive signal is produced in example；Fig. 3 is displacement signal acquisition and the flow chart of processing in embodiments of the invention；With
And Fig. 4 is the flow chart that new drive signal in embodiments of the invention is produced.
As shown in Fig. 2 the flow that drive signal is produced is as follows：
Step 1-1:Single-chip microcomputer governor circuit 10 receive computer 200 transmit instruction parsed and according to parsing after
Instruction generation control signal, subsequently into step 1-2；
Step 1-2:CPLD circuit 20 produces triangular wave digital voltage drive signal according to control signal, subsequently into step
1-3；
Step 1-3:Triangular wave digital voltage drive signal is carried out digital-to-analogue conversion by D/A converting circuit 30, obtains simulation electricity
Signal is pressed, subsequently into step 1-4；
Step 1-4:Analog voltage signal is carried out signal amplification by signal amplification circuit 40, is amplified signal, Ran Houjin
Enter step 1-5；
Step 1-5:Amplified signal is added in the two ends of piezoelectric ceramic actuator 50 as drive voltage signal, makes its output phase
The displacement of prestige, subsequently into done state.
As shown in figure 3, displacement signal acquisition and the flow handled are as follows：
Step 2-1:Displacement signal acquisition circuit 60 collects displacement voltage value based on displacement, subsequently into step 2-
2；
Step 2-2：Displacement voltage value is carried out analog-to-digital conversion by analog to digital conversion circuit 70, is obtained data signal and is transmitted to list
Piece machine governor circuit 10, subsequently into step 2-3；
Step 2-3:Single-chip microcomputer governor circuit 10 is handled data signal, subsequently into done state.
As shown in figure 4, the flow of new drive signal amendment displacement error is as follows：
Step 3-1:Single-chip microcomputer governor circuit 10 generates new control signal after handling data signal, subsequently into
Step 3-2；
Step 3-2:CPLD circuit 20 produces new triangular wave digital voltage drive signal according to new control signal, then
Into step 3-3；
Step 3-3:New triangular wave digital voltage drive signal is carried out digital-to-analogue conversion by D/A converting circuit 30, obtains new
Analog voltage signal, subsequently into step 3-4；
Step 3-4:New analog voltage signal is carried out signal amplification by signal amplification circuit 40, obtains new amplification letter
Number, subsequently into step 3-5；
Step 3-5:New amplified signal is added in the two ends of piezoelectric ceramic actuator 50 as new drive voltage signal, production
Raw new displacement, so that displacement error is corrected, subsequently into done state.
The effect of embodiment and effect
The control device of piezoelectric ceramic actuator according to involved by the present embodiment, because including：Single-chip microcomputer governor circuit,
CPLD circuit, D/A converting circuit, signal amplification circuit, piezoelectric ceramic actuator, displacement signal acquisition circuit, analog-to-digital conversion electricity
Road, so, the instruction that the present embodiment can receive computer transmission by single-chip microcomputer governor circuit is parsed, and CPLD circuit is produced
Triangular wave digital voltage drive signal, then acts on pressure after digital-to-analogue conversion, signal amplification as drive voltage signal again
Electroceramics actuator two ends make it produce displacement, then carry out input single-chip microcomputer master control electricity after displacement collection, analog-to-digital conversion
Road, afterwards, CPLD circuit produce new triangular wave digital voltage drive signal, and then, new drive voltage signal acts on pressure
Electroceramics actuator two ends make it produce new displacement to correct displacement error.In addition, also including the outer RAM of piece in the present embodiment
For being stored and being read to data signal.
The control device of the piezoelectric ceramic actuator of the present embodiment, is realized and is realized using software function alternative hardware function
The function of closed-loop control, the problem of having evaded the concussion that is brought to whole system in hard wired feed back loop and be unstable, evades open loop
Mathematical modeling needed for control, so as to reduce complexity, therefore the present embodiment is the characteristics of have simple in construction, simple operation.
Above-mentioned embodiment is the preferred case of the present invention, is not intended to limit protection scope of the present invention.
Claims (6)
1. a kind of control device of piezoelectric ceramic actuator, it is characterised in that including：
Single-chip microcomputer governor circuit, the instruction for receiving computer transmission is parsed and according to the instruction generation control letter after parsing
Number；
Complex programmable logic device, is communicated to connect with the single-chip microcomputer governor circuit, and triangle is produced according to the control signal
Wave number word voltage drive signals；
D/A converting circuit, is communicated to connect with the single-chip microcomputer governor circuit, by what is exported by the single-chip microcomputer governor circuit
The triangular wave digital voltage drive signal carries out digital-to-analogue conversion, obtains analog voltage signal；
Signal amplification circuit, carries out signal amplification by the analog voltage signal, is amplified signal；
Piezoelectric ceramic actuator, displacement is produced under the driving as the amplified signal of drive voltage signal；
Displacement signal acquisition circuit, displacement voltage value is collected based on the displacement；And
Analog to digital conversion circuit, carries out analog-to-digital conversion by the displacement voltage value, obtains data signal and transmit to the single-chip microcomputer
Governor circuit.
2. the control device of piezoelectric ceramic actuator according to claim 1, it is characterised in that wherein,
The single-chip microcomputer governor circuit is handled the data signal and generates new control signal,
The complex programmable logic device produces new triangular wave digital voltage drive signal according to the new control signal,
The new triangular wave digital voltage drive signal is carried out digital-to-analogue conversion by the D/A converting circuit, obtains new simulation
Voltage signal,
The new analog voltage signal is carried out signal amplification by the signal amplification circuit, obtains new amplified signal as institute
The new drive voltage signal of piezoelectric ceramic actuator is stated,
The piezoelectric ceramic actuator produces new displacement to correct displacement mistake under the new drive voltage signal driving
Difference.
3. the control device of piezoelectric ceramic actuator according to claim 1, it is characterised in that also include：
The outer random access memory of piece, communicates to connect with the single-chip microcomputer governor circuit, is controlled by the single-chip microcomputer governor circuit,
The data signal for the single-chip microcomputer to be received is stored.
4. the control device of piezoelectric ceramic actuator according to claim 1, it is characterised in that wherein,
The displacement signal acquisition circuit is displacement transducer.
5. the control device of piezoelectric ceramic actuator according to claim 1, it is characterised in that：
Wherein, the single chip machine controlling circuit is STC89C58RD+ single chip machine controlling circuits.
6. the control device of piezoelectric ceramic actuator according to claim 1, it is characterised in that：
Wherein, the D/A converting circuit is AD5062 D/A converting circuits,
Analog-digital conversion circuit as described is ADS1255 analog to digital conversion circuits.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710585466.6A CN107272558A (en) | 2017-07-18 | 2017-07-18 | A kind of control device of piezoelectric ceramic actuator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710585466.6A CN107272558A (en) | 2017-07-18 | 2017-07-18 | A kind of control device of piezoelectric ceramic actuator |
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| CN201710585466.6A Pending CN107272558A (en) | 2017-07-18 | 2017-07-18 | A kind of control device of piezoelectric ceramic actuator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110209045A (en) * | 2019-05-31 | 2019-09-06 | 西安交通大学 | A kind of external cavity tunable laser diode Nonlinearity Correction Method based on FPGA |
| CN110375642A (en) * | 2019-07-31 | 2019-10-25 | 北京航空航天大学 | A kind of interferometer piezoelectric ceramic control device and its control method |
| CN112422127A (en) * | 2020-11-02 | 2021-02-26 | 武汉华中天经通视科技有限公司 | Piezoelectric ceramic drive circuit |
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Cited By (4)
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| CN110209045A (en) * | 2019-05-31 | 2019-09-06 | 西安交通大学 | A kind of external cavity tunable laser diode Nonlinearity Correction Method based on FPGA |
| CN110375642A (en) * | 2019-07-31 | 2019-10-25 | 北京航空航天大学 | A kind of interferometer piezoelectric ceramic control device and its control method |
| CN110375642B (en) * | 2019-07-31 | 2020-12-08 | 北京航空航天大学 | Piezoelectric ceramic control device for interferometer and control method thereof |
| CN112422127A (en) * | 2020-11-02 | 2021-02-26 | 武汉华中天经通视科技有限公司 | Piezoelectric ceramic drive circuit |
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Application publication date: 20171020 |