CN205665539U - Electric drive device is pressed to self -adaptation - Google Patents
Electric drive device is pressed to self -adaptation Download PDFInfo
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- CN205665539U CN205665539U CN201620439998.XU CN201620439998U CN205665539U CN 205665539 U CN205665539 U CN 205665539U CN 201620439998 U CN201620439998 U CN 201620439998U CN 205665539 U CN205665539 U CN 205665539U
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Abstract
The utility model belongs to the technical field of optical fiber sensing, a electric drive device presses that self -adaptation, high accuracy, high flexibility is disclosed. Controller, digital analog conversion unit, range amplifying unit, power amplifier unit, the detecting element of device constitute feedback loop, can adjust the drive wave form according to wave form range and frequency information, realize the self -adaptation function, the power network of device adopts noise reduction, and NULL power pin adopts RC wave filter network, has effectively reduced the power supply noise, has improved the drive precision, the device adopts the modularized design, and to the piezoelectricity drive demand of difference, it is unchangeable to keep the core to configure, uses the range amplifying unit of different technical indicators and power amplifier unit to realize, has improved the flexibility of device.
Description
Technical field
This utility model belongs to optical-fibre communications, sensory field, is related specifically to Fabry Perot tunable optical fiber filter
The actuation techniques of piezoelectric ceramics.
Background technology
Fabry Perot tunable optical fiber filter is the device that optical signal carries out wavelength selection, in optical-fibre communications, passes
Sense field is applied widely.Optical-fibre communications wavelength-division multiplex technique based on turnable fiber filter can improve ripple further
Divide the number of channels of multiplexing；And the grating demodulation system being made up of turnable fiber filter to be current technology the most ripe, application
Widest wavelength demodulation scheme, precision can reach micromicron level.Fabry Perot tunable optical fiber filter is a kind of basis
The wave filter of the simple in construction that Fabry-Perot interference principle manufactures.The end face polishing of input optical fibre and output optical fibre, is formed thoroughly
Mirror, and be fixed on piezoelectric ceramics adjustable support, there is gap in centre.Selection to wavelength of optical signal is by regulation piezoelectricity
Ceramic structure realizes: making piezoelectric ceramics produce deformation by controlling voltage, be finely adjusted adjustable support, intermediate gap is sent out
Changing, thus change the selection of wavelength of optical signal.So, the actuation techniques of piezoelectric ceramics directly affects Fabry-Perot
The degree of regulation of turnable fiber filter, is related to grating in the filtering frequency range of wavelength-division multiplex in optical-fibre communications and Fibre Optical Sensor
The resolution of demodulating system, is optical-fibre communications, a kind of key technology of sensory field.
Current piezoelectric driving technology is broadly divided into voltage-controlled type and current-control type.Control of Voltage has good low
Frequently stability, it is possible to obtain high-resolution.But owing to there is non-linear sluggish effect between deformation and the voltage of piezoelectric ceramics
Should, creep etc., the frequency response of system is relatively low, it is therefore desirable to use control algolithm to be optimized.Current-control type passes through
Apply bidirectional current at piezoelectric ceramics two ends and realize control, this method less stable, but be in response to rapidly, be suitable for needs
The occasion that high frequency controls.
Domestic and international considerable research report and patent application (mandate) relate to the actuation techniques of piezoelectric ceramics, such as:
Piezoelectric actuator and manufacture method (CN 103199733 B) thereof
For controlling the circuit (CN 01102885) of piezoelectric actuator
Piezoelectric actuator and piezo-electric motor (CN 103259449 A)
The manufacture method of multilayer piezoelectric acutator and multilayer piezoelectric acutator (CN 101552318 A)
A kind of Adaptive-learning control method (CN 103853046 A) of piezoelectric ceramic actuator
Despite considerable similar work, but it is possible to meet simultaneously " self adaptation, in high precision, high flexibility "
Piexoelectric actuator is the rarest.
Summary of the invention
Problem to be solved in the utility model be to provide one can meet simultaneously " self adaptation, in high precision, high flexibly
Property " Piexoelectric actuator.
Particular content of the present utility model includes:
A kind of self adaptation Piexoelectric actuator is formed by with lower part: controller；D/A conversion unit；Amplitude is amplified single
Unit；Power amplification unit；Bias unit；Detector unit.It connects control planning: control unit sends number according to controlling curve
Word command is to D/A conversion unit, and digital quantity is transformed to analog output to amplitude amplifying unit, amplitude by D/A conversion unit
Amplifying unit is mainly made up of amplifier, is amplified by prime voltage analog and exports to power amplification unit, power amplification
Unit is mainly made up of power MOS pipe, and prime voltage analog carries out power amplification, drives load piezoelectric ceramics, and biasing is single
Voltage analog in amplitude amplifying unit is biased arranging by unit according to the instruction of controller, and detector unit detection power is put
Analog quantity after great is also converted to digital output to controller.
The bias unit of a kind of self adaptation Piexoelectric actuator is constituted by with lower part: reference voltage unit；Adder；Subtract
Musical instruments used in a Buddhist or Taoist mass；Scaling unit and isolator.It connects control planning: controller controls reference voltage unit and adder and subtracts
Musical instruments used in a Buddhist or Taoist mass, reference voltage gives scaling unit through adder and subtractor output voltage signal；Scaling unit amplifies electricity
Exporting to isolator after pressure signal, isolator output voltage signal, to the amplitude amplifying unit of device, plays isolation bias unit
Effect with amplitude amplifying unit.
The detector unit of a kind of self adaptation Piexoelectric actuator is constituted by with lower part: isolator；Amplifier and modulus turn
Change unit.It connects control planning: while the analog voltage driving pressure electroceramics of power amplification unit, and detection is given in output
The isolator of unit, isolator exports to amplifier, and amplifier exports to AD conversion unit after nursing one's health input signal,
Input analog amount is converted to digital output to controller by AD conversion unit.
Controller of the present utility model, D/A conversion unit, amplitude amplifying unit, power amplification unit, detector unit structure
Become feedback circuit, wave-shape amplitude that controller can obtain and frequency data, driving of logarithmic mode converting unit according to detector unit
Dynamic data are adjusted, it is achieved that the adaptation function of driving means.
D/A conversion unit of the present utility model employing TI 16 figure place weighted-voltage D/A converter DAC712, highest communication speed 1MHz,
Use parallel communications between controller and D/A conversion unit, digits converting extent can be effectively improved, simplify controller software
Programming.
Power supply of the present utility model forms according to the structure of AC/DC, DC/DC, linear voltage regulator (LDO), and AC/DC realizes handing over
The conversion of stream 220V to direct current 24V, DC/DC realizes the conversion of 24V to ± 15V, output switch power source, and uses isolated form,
The noise jamming that isolation AC/DC produces.LDO realization ± 15V, to ± the conversion of 12V, 5V, 3.3V, can filter ± 15V switchs electricity
The output ripple in source, improves and drives signal accuracy.
This utility model is serially connected with little valued resistor in the power pins of each IC chip, and value 10 ohm ~
50 ohm, the parasitic capacitance for fit printed circuit board forms RC low-pass filter network, further filters out power supply high frequency
Noise, improves and drives signal accuracy.
This utility model uses modularized design, for the real needs of Piezoelectric Driving, can select the fortune of different model
Put and transistor composition amplitude amplifying unit and power amplification unit, different amplitude and the driving signal of slope can be realized, carry
The high motility of driving means.
The beneficial effect of the invention
The technical scheme that this utility model is proposed at a high speed, it is possible to achieve meet simultaneously " self adaptation, in high precision, high flexibly
Property " Piexoelectric actuator.
This utility model comprises feedback circuit, wave-shape amplitude that controller can obtain according to detector unit and frequency number
According to, the driving data of logarithmic mode converting unit is adjusted, it is achieved that the adaptation function of driving means.
Electric power network of the present utility model uses noise reduction process, amplifier to use low-noise device with transistor, it is possible to effectively
Improve and drive signal accuracy.
This utility model uses modularized design, for different Piezoelectric Driving demands, keeps core architecture constant, uses
The amplifier of different output areas and power tube, can change the technical specification of amplitude amplifying unit and power amplification unit, improves
The motility of device.
This utility model uses controller, D/A conversion unit, amplitude amplifying unit and the discrete knot of power amplification unit
Structure, can produce various drive waveforms flexibly, solves the waveform problem of solidification using the integrated chip of Piezoelectric Driving to exist, and improves
The motility of device.
Accompanying drawing explanation
Fig. 1 is system block diagram of the present utility model
Fig. 2 is bias unit block diagram of the present utility model
Fig. 3 is detector unit block diagram
Fig. 4 is electric power network block diagram
Below in conjunction with drawings and Examples, this utility model is further elaborated on, but this utility model is not limited to these
Embodiment.
Detailed description of the invention
Refering to Fig. 1, Fig. 2 and Fig. 3, Fig. 4, the self adaptation of the present embodiment, in high precision, the FBG (FBG) demodulator of high flexibility is adjustable
Humorous optical fiber filter driving means includes:
Driving means is formed by with lower part: controller (11)；D/A conversion unit (12)；Amplitude amplifying unit (13)；
Power amplification unit (14)；Bias unit (15)；Detector unit (16).It connects control planning: controller (11) is according to control
Yeast production line sends digital command, to D/A conversion unit (12), D/A conversion unit (12), digital quantity is transformed to analog output
To amplitude amplifying unit (13), amplitude amplifying unit (13) is mainly made up of amplifier, is amplified also by prime voltage analog
Output is to power amplification unit (14), and power amplification unit (14) is mainly made up of power MOS pipe, is entered by prime voltage analog
Row power amplification, drives load piezoelectric ceramics, bias unit (15) instructing the electricity in amplitude amplifying unit according to controller
Pressing mold analog quantity be biased arrange, detector unit (16) detection power amplification after analog quantity and be converted to digital output give control
Device processed (11).
Refering to Fig. 2, bias unit (15) is constituted by with lower part: reference voltage unit (21)；Adder (22)；Subtractor
(23)；Scaling unit (24) and isolator (25).It connects control planning: controller (11) controls reference voltage unit
(21), adder (22), subtractor (23), reference voltage through adder (22) and subtractor (23) output voltage signal give than
Example amplifying unit (24)；Scaling unit (24) exports to isolator (25) after amplifying voltage signal, isolator (25) exports
Voltage signal, to the amplitude amplifying unit (13) of device, plays the work of isolation bias unit (15) and amplitude amplifying unit (13)
With.
Refering to Fig. 3, detector unit (16) is constituted by with lower part: isolator (31)；Amplifier (32) and analog digital conversion list
Unit (33).It connects control planning: while the analog voltage driving pressure electroceramics of power amplification unit (14), output is given
The isolator (31) of detector unit (16), isolator (31) exports to amplifier (32), and input signal is carried out by amplifier (32)
Exporting to AD conversion unit (33) after conditioning, input analog amount is converted to digital output to control by AD conversion unit (33)
Device processed (11).
In this embodiment, controller (11) uses the MCU MSP430F149 of TI, with D/A conversion unit (12) DAC712
Carry out parallel join, use the mode of described point to export triangle wave voltage analog quantity, amplitude peak-to-peak value 10V, frequency 2Hz.Through width
Degree amplifying unit (13) and power amplification unit (14) after, driving signal become amplitude peak-to-peak value 18V, frequency 2Hz high-power
Voltage signal.
By the FBG (FBG) demodulator turnable fiber filter driving means of the present embodiment, it is possible to obtain following advantage:
First, it is possible to achieve drive the Automatic adjusument of signal.Owing to device have employed feedback circuit, controller (11) can
With the drive signal amplitude obtained according to detector unit (16) and frequency information, logarithmic mode converting unit (12) is finely adjusted, and carries
High signal accuracy.
Second, owing to device main chip power consumption electric current is the least, printing electricity can be coordinated at power pins series resistor
The parasitic capacitance of road plate forms RC low-pass filter network, has filtered power supply high-frequency noise, adds the electric power network that device uses
Noise-removed technology, further increases the precision driving signal.
Claims (5)
1. a self adaptation Piexoelectric actuator, its feature includes:
Device is formed by with lower part: controller (11)；D/A conversion unit (12)；Amplitude amplifying unit (13)；Power amplification
Unit (14)；Bias unit (15)；Detector unit (16);It connects control planning: controller (11) is sent out according to controlling curve
Digital command is sent digital quantity to be transformed to analog output put to amplitude to D/A conversion unit (12), D/A conversion unit (12)
Big unit (13), amplitude amplifying unit (13) is mainly made up of amplifier, is amplified by prime voltage analog and exports to merit
Rate amplifying unit (14), power amplification unit (14) is mainly made up of power MOS pipe, prime voltage analog is carried out power and puts
Greatly, load piezoelectric ceramics, bias unit (15) instructing the voltage analog in amplitude amplifying unit according to controller are driven
Be biased arrange, detector unit (16) detection power amplification after analog quantity and be converted to digital output to controller
(11);Bias unit (15) is constituted by with lower part: reference voltage unit (21)；Adder (22)；Subtractor (23)；Ratio is put
Big unit (24) and isolator (25);It connects control planning: controller (11) controls reference voltage unit (21), adder
(22), subtractor (23), reference voltage gives scaling unit through adder (22) and subtractor (23) output voltage signal
(24)；Scaling unit (24) exports to isolator (25) after amplifying voltage signal, and isolator (25) output voltage signal is given
The amplitude amplifying unit (13) of device, plays the effect of isolation bias unit (15) and amplitude amplifying unit (13);Detector unit
(16) constituted by with lower part: isolator (31)；Amplifier (32) and AD conversion unit (33);It connects control planning:
While the analog voltage driving pressure electroceramics of power amplification unit (14), export to the isolator of detector unit (16)
(31), isolator (31) exports to amplifier (32), and amplifier (32) exports to analog digital conversion after nursing one's health input signal
Unit (33), input analog amount is converted to digital output to controller (11) by AD conversion unit (33).
2. according to a kind of self adaptation Piexoelectric actuator described in claim 1, it is characterised in that: the controller of device, digital-to-analogue
Converting unit, amplitude amplifying unit, power amplification unit, detector unit constitute feedback circuit, and controller can be single according to detection
Wave-shape amplitude that unit obtains and frequency data, the driving data of logarithmic mode converting unit is adjusted, it is achieved that driving means
Adaptation function.
3. according to a kind of self adaptation Piexoelectric actuator described in claim 1, it is characterised in that: the D/A conversion unit of device
Use TI 16 figure place weighted-voltage D/A converter DAC712, highest communication speed 1MHz, use parallel between controller and D/A conversion unit
Communication.
4. according to a kind of self adaptation Piexoelectric actuator described in claim 1, it is characterised in that: the electric power network of device according to
AC/DC, DC/DC, the structure composition of linear voltage regulator, AC/DC realizes the alternating current 220V conversion to direct current 24V, and DC/DC realizes
The conversion of 24V to ± 15V, output switch power source, and use isolated form, the noise jamming that isolation AC/DC produces;LDO realizes
± 15V to the ± conversion of 12V, 5V, 3.3V, can filter ± the output ripple of 15V Switching Power Supply.
5. according to a kind of self adaptation Piexoelectric actuator described in claim 1, it is characterised in that: each integrated circuit of device
The power pins of chip is all serially connected with little valued resistor, value 10 ohm ~ 50 ohm, posting for fit printed circuit board
Raw electric capacity forms RC low-pass filter network, further filters out power supply high-frequency noise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620439998.XU CN205665539U (en) | 2016-05-16 | 2016-05-16 | Electric drive device is pressed to self -adaptation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620439998.XU CN205665539U (en) | 2016-05-16 | 2016-05-16 | Electric drive device is pressed to self -adaptation |
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| CN205665539U true CN205665539U (en) | 2016-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620439998.XU Active CN205665539U (en) | 2016-05-16 | 2016-05-16 | Electric drive device is pressed to self -adaptation |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602846A (en) * | 2016-12-30 | 2017-04-26 | 陕西海泰电子有限责任公司 | Full-digital constant-voltage constant-current four-quadrant power supply |
| CN109945926A (en) * | 2019-03-28 | 2019-06-28 | 北京同创微纳科技有限公司 | A kind of detection system and its method towards piezoelectric device |
| CN109960306A (en) * | 2019-04-19 | 2019-07-02 | 海光信息技术有限公司 | Low pressure difference linear voltage regulator |
| CN110044399A (en) * | 2019-04-24 | 2019-07-23 | 西安交通大学 | Prevent the optic fiber grating wavelength demodulating system and demodulation method of piezo actuator creep |
| CN110275292A (en) * | 2019-06-21 | 2019-09-24 | 上海电力学院 | Tunable fp filter driving voltage optimization method |
| CN114189290A (en) * | 2022-02-17 | 2022-03-15 | 浙江中控技术股份有限公司 | Signal generation system and signal generation method |
-
2016
- 2016-05-16 CN CN201620439998.XU patent/CN205665539U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602846A (en) * | 2016-12-30 | 2017-04-26 | 陕西海泰电子有限责任公司 | Full-digital constant-voltage constant-current four-quadrant power supply |
| CN109945926A (en) * | 2019-03-28 | 2019-06-28 | 北京同创微纳科技有限公司 | A kind of detection system and its method towards piezoelectric device |
| CN109945926B (en) * | 2019-03-28 | 2021-07-02 | 北京同创微纳科技有限公司 | Detection system and method for piezoelectric device |
| CN109960306A (en) * | 2019-04-19 | 2019-07-02 | 海光信息技术有限公司 | Low pressure difference linear voltage regulator |
| CN109960306B (en) * | 2019-04-19 | 2020-08-18 | 海光信息技术有限公司 | Low dropout linear regulator |
| CN110044399A (en) * | 2019-04-24 | 2019-07-23 | 西安交通大学 | Prevent the optic fiber grating wavelength demodulating system and demodulation method of piezo actuator creep |
| CN110275292A (en) * | 2019-06-21 | 2019-09-24 | 上海电力学院 | Tunable fp filter driving voltage optimization method |
| CN110275292B (en) * | 2019-06-21 | 2021-09-07 | 上海电力学院 | Drive voltage optimization method for tunable Fabry-Perot filter |
| CN114189290A (en) * | 2022-02-17 | 2022-03-15 | 浙江中控技术股份有限公司 | Signal generation system and signal generation method |
| CN114189290B (en) * | 2022-02-17 | 2022-05-17 | 浙江中控技术股份有限公司 | Signal generation system and signal generation method |
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