CN110098763A - A kind of supersonic guide-wave drive power supply for piezoelectric ceramics based on FPGA - Google Patents
A kind of supersonic guide-wave drive power supply for piezoelectric ceramics based on FPGA Download PDFInfo
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- CN110098763A CN110098763A CN201910400243.7A CN201910400243A CN110098763A CN 110098763 A CN110098763 A CN 110098763A CN 201910400243 A CN201910400243 A CN 201910400243A CN 110098763 A CN110098763 A CN 110098763A
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- 239000000919 ceramic Substances 0.000 title claims abstract description 27
- 238000005086 pumping Methods 0.000 claims abstract description 14
- 230000000694 effects Effects 0.000 claims abstract description 4
- 230000006870 function Effects 0.000 claims abstract description 4
- 238000011161 development Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 claims description 2
- 241000208340 Araliaceae Species 0.000 claims 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims 1
- 235000003140 Panax quinquefolius Nutrition 0.000 claims 1
- 235000008434 ginseng Nutrition 0.000 claims 1
- 238000000465 moulding Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 6
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000013459 approach Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 230000018109 developmental process Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 2
- 230000009897 systematic effect Effects 0.000 description 2
- TVZRAEYQIKYCPH-UHFFFAOYSA-N 3-(trimethylsilyl)propane-1-sulfonic acid Chemical group C[Si](C)(C)CCCS(O)(=O)=O TVZRAEYQIKYCPH-UHFFFAOYSA-N 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000033772 system development Effects 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
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
- H02N2/181—Circuits; Control arrangements or methods
Abstract
A kind of supersonic guide-wave drive power supply for piezoelectric ceramics based on FPGA, belongs to ultrasonic technique field and power technique fields.Supersonic guide-wave drive power supply for piezoelectric ceramics proposed by the present invention based on FPGA, first, DDS function is realized on FPGA by writing Verilog HDL language and generates exciting signal source, analog signal is converted digital signals by digital analog converter (DAC) again, finally it is delivered to high-voltage linear operational amplifier circuit, pumping signal is amplified and generates purpose driving voltage signal, the purpose driving voltage signal of generation drives piezoelectric transducer (PZT), realizes the function of supersonic guide-wave dirt detection and scale removal.The present invention combines as core algorithm, by DAC data conversion with high-voltage linear amplifying circuit using FPGA as platform, DDS, the integrated level of power supply is greatly improved under the premise of realizing high-precision, strong driving effect, the shortcomings that compensating for conventional piezoelectric ceramic driving power supply, to propose the new approaches of totally digitilized circuit based on the detection of supersonic guide-wave dirt and scaler system.
Description
Technical field
The present invention relates to a kind of supersonic guide-wave drive power supply for piezoelectric ceramics based on FPGA, belongs to ultrasonic technique field and electricity
Source technology field.
Background technique
With the rapid development of precision instrument, piezoelectric ceramics is because of its nano high-precision, heavy load ability and high-performance etc.
Advantage and be widely used in precision positioning industry.Say to a certain extent, in system it is most important be actuator and driver,
Drive power supply for piezoelectric ceramics decides the resolution ratio and kinematic accuracy of piezoelectric ceramics.General driving power needs different waveforms to make
For input signal, the implementation method of signal generator is usually to use discrete component or monolithic special integrated chip, but its frequency
Not high, stability is poor, and is not easy to debug, and develops and use all by larger limitation.
With the continuous development of field programmable gate array (Field Programmable Gate Array, FPGA), directly
Connect the further mature of Digital Frequency Synthesize (Direct Digital Frequency Synthesizer, DDS) technical application, benefit
High performance Multi-type waveform signal generator is developed in FPGA platform compared with the traditional signal generator with DDS principle, cost
Lower, operation is more flexible, and can also be according to requiring online updating to configure, and system development tends to software implementation, customizedization.
A kind of supersonic guide-wave drive power supply for piezoelectric ceramics based on FPGA is calculated using FPGA as platform, DDS as core
DAC is acquired as data and is combined with high-voltage linear amplifying circuit by method, greatly improves Power integrity, precision height,
Response is fast, and can provide the driving frequency with enough bandwidth.
Summary of the invention
A kind of supersonic guide-wave drive power supply for piezoelectric ceramics based on FPGA that the present invention designs can make up conventional piezoelectric ceramics
The shortcomings that driving power, improves the integrated level of power supply, has the characteristics that precision is high, response is fast.
To achieve the above objectives, the Analyzing on Building A Planning Scheme taken of the invention comprises the steps of:
S1, pumping signal is generated using the DDS signal generator based on FPGA；
S2, the pumping signal generated by step S1 convert digital signals into simulation letter by DAC data acquisition module
Number；
S3, the analog signal generated by step S2, are transported to high-voltage linear operational amplifier circuit and amplify；
S4, by the amplified voltage signal of step S3, drive piezoelectric transducer (PZT)；
S5, piezoelectric transducer generates vibration signal after step S4, realizes the function of the detection of supersonic guide-wave dirt or scale removal
Energy.
Above-mentioned S1 using based on FPGA DDS signal generator generate pumping signal the following steps are included:
S11, Verilog HDL code is write in program development software (PDS), mould is controlled to pumping signal control module, DDS
Block, IP kernel memory module and display module are initialized and are set；
S12, by the module example of step S11 into top layer top.v file；
S13, the simulating, verifying for carrying out top.v file by ModelSim simulation software after step S12；
S14, distribution pin is compiled entirely after step S13 verifying simulation result is correct, generates data streaming file simultaneously
Downloading carries out the debugging of plate grade；
S15, the pumping signal actually generated after step S14 by the observation of the equipment such as oscillograph or display, meet
For generating the input signal of high pressure operational amplifier circuit after desired effect.
Above-mentioned S2 converts digital signals into analog signal step by DAC data acquisition module
S21, the digital signal received is used into high-speed DAC chip difference output；
S22, the signal after step S21 reduce the interference of noise by Butterworth LPF；
S23, the signal after step S22 adjust circuit by amplitude to realize difference Single-end output and amplitude adjusted；
S24, the output area for controlling signal by potentiometer after step S23 processing.
The DDS signal generator based on FPGA is real by FPGA development platform and Verilog HDL code program
It is existing, pumping signal control module, DDS control module, IP kernel memory module and display module including DDS signal source generator,
And pass through ModelSim simulation software simulating, verifying.
The DAC data acquisition module is irrigated by writing Verilog HDL Language-Driven by high-speed DAC chip, Bart
This low-pass filter, amplitude regulating circuit and signal output interface composition, are attached by standard interface and FPGA.
The high-voltage linear operational amplifier circuit is a high pressure, the MOSFET operational amplifier of high power bandwidth, wherein setting
Count technical parameter: maximum output voltage Umax≥100V；Maximum output current Imax=191mA；Slew rate SR=50.3V/us；It loses
Adjust voltage < 1mV；Phase compensation capacitor Cc=5pF；Phase compensation resistance Rc=0 Ω；Current-limiting resistance Rlim=4.7 Ω.
Compared with conventional piezoelectric ceramic driving power supply, a kind of supersonic guide-wave piezoelectric ceramics based on FPGA of the present invention
Driving power includes following advantages:
(1) sine wave, square wave and triangular wave be can produce and realize that waveform is converted；
(2) frequency modulation, amplitude modulation, phase modulation can be achieved；
(3) output gap 0.5KHz frequency range is 10-50KHz；
(4) output voltage range is -100~100V；
(5) maximum output current is not less than 150mA；
(6) the minimum 10mV of output resolution ratio.
Detailed description of the invention
Fig. 1 is a kind of systematic schematic diagram of the supersonic guide-wave drive power supply for piezoelectric ceramics based on FPGA of the present invention.
Fig. 2 is a kind of DDS signal based on FPGA of the supersonic guide-wave drive power supply for piezoelectric ceramics based on FPGA of the present invention
The schematic diagram of generator.
Fig. 3 is a kind of DAC data based on FPGA of the supersonic guide-wave drive power supply for piezoelectric ceramics based on FPGA of the present invention
Acquisition module schematic diagram.
Fig. 4 is a kind of high-voltage linear amplifying circuit of the supersonic guide-wave drive power supply for piezoelectric ceramics based on FPGA of the present invention.
Fig. 5 is that the present invention generates purpose driving voltage signal.
Specific embodiment
It is further detailed below with reference to example and attached drawing, following instance is descriptive language and is not limit
Qualitative language cannot be limited the scope of protection of the present invention as evidence.
A kind of supersonic guide-wave drive power supply for piezoelectric ceramics based on FPGA of the present invention, central scope are by FPGA and high-voltage line
Property amplifying circuit combine, the shortcomings that this system can overcome conventional piezoelectric ceramic driving power supply, is improving Power integrity
Under the premise of realize high-precision, the effect that drives by force, can be used for based on the detection of supersonic guide-wave dirt and scaler system.
Steps are as follows for specific experiment:
A kind of supersonic guide-wave drive power supply for piezoelectric ceramics based on FPGA, if Fig. 1 is systematic schematic diagram, main includes being based on
The DSS signal generator of FPGA, the DAC data acquisition module based on FPGA, high-voltage linear amplifying circuit and driving scale removal mould
Block.Fig. 2 is the schematic diagram of the DDS signal generator based on FPGA, mainly includes pumping signal control module, DDS control mould
Block, IP kernel memory module and display module.Fig. 3 is the DAC data acquisition module schematic diagram based on FPGA, and main includes high speed
DAC chip, Butterworth LPF, amplitude regulating circuit and signal output interface.Fig. 4 is high-voltage linear amplifying circuit,
It is exported after input signal being amplified 52 times.Fig. 5 is the purpose driving voltage signal generated, wherein 1 frequency of input signal is
5KHZ, amplitude are about ± 47mV, and amplified 2 frequency of purpose driving voltage signal is 5KHZ, and amplitude is ± 2.4V.
To make the object, technical solutions and advantages of the present invention clearer, embodiment of the present invention is made below further
Ground detailed description:
(1) write in the software development environment of general PC first Verilog HDL language to pumping signal control module,
DDS control module, IP kernel memory module and display module are initialized and are set；
(2) program write is downloaded in FPGA, is debugged, is modified to generating ideal exciting signal source；
(3) pumping signal for generating step (2), converts digital signals into mould by digital analog converter (DAC)
Quasi- signal；
(4) by step (3) treated signal, it is delivered to high-voltage linear operational amplifier circuit, generates purpose driving voltage signal
(such as Fig. 5) drives piezoelectric transducer (PZT) to realize that supersonic guide-wave dirt detects the function with scale removal.
Finally, it should be noted that the above examples are only used to illustrate the technical scheme of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify to technical solution documented by previous examples, or some or all of the technical features are equally replaced
It changes.
Claims (6)
1. a kind of supersonic guide-wave drive power supply for piezoelectric ceramics based on FPGA, it is characterised in that comprise the steps of:
S1, pumping signal is generated using the DDS signal generator based on FPGA；
S2, the pumping signal generated by step S1, convert digital signals into analog signal by DAC data acquisition module；
S3, the analog signal generated by step S2, are transported to high-voltage linear operational amplifier circuit and amplify；
S4, by the amplified voltage signal of step S3, drive piezoelectric transducer (PZT)；
S5, piezoelectric transducer generates vibration signal after step S4, realizes the function of supersonic guide-wave scale removal.
2. a kind of supersonic guide-wave drive power supply for piezoelectric ceramics based on FPGA according to claim 1, it is characterised in that S1
The following steps are included:
S11, Verilog HDL code is write in program development software (PDS), to pumping signal control module, DDS control module, IP
Core memory module and display module are initialized and are set；
S12, by the module example of step S11 into top layer top.v file；
S13, the simulating, verifying for carrying out top.v file by ModelSim simulation software after step S12；
S14, distribution pin is compiled entirely after step S13 verifying simulation result is correct, is generated data streaming file and is downloaded,
Carry out the debugging of plate grade；
S15, the pumping signal actually generated after step S14 by the observation of the equipment such as oscillograph or display, meet and are expected
For generating the input signal of high pressure operational amplifier circuit after effect.
3. a kind of supersonic guide-wave drive power supply for piezoelectric ceramics based on FPGA according to claim 1, it is characterised in that S2
The following steps are included:
S21, the digital signal received is used into high speed D/A chip difference output；
S22, by the interference of step S21 treated signal reduced by 7 rank Butterworth LPFs noise；
S23, circuit is adjusted to realize difference Single-end output and amplitude adjusted by amplitude by step S22 treated signal；
S24, pass through the output area that potentiometer controls signal by step S23 treated signal.
4. a kind of supersonic guide-wave drive power supply for piezoelectric ceramics based on FPGA according to claim 1, it is characterised in that: institute
The DDS signal generator based on FPGA stated realized by FPGA development platform and program in machine code, by program development tools and
Verilog HDL program models and passes through ModelSim simulation software and verifies, the input signal control including DDS signal source generator
Molding block, DDS control module, IP kernel memory module and display module.
5. a kind of supersonic guide-wave drive power supply for piezoelectric ceramics based on FPGA according to claim 1, it is characterised in that: institute
The DAC data acquisition module stated is by writing Verilog HDL Language-Driven, by high speed D/A chip, 7 rank Butterworth low pass
Wave device, amplitude regulating circuit and signal output interface composition, are attached by standard interface and FPGA.
6. a kind of supersonic guide-wave drive power supply for piezoelectric ceramics based on FPGA according to claim 1, it is characterised in that: institute
The high-voltage linear operational amplifier circuit stated is a high pressure, the MOSFET operational amplifier of high power bandwidth, wherein the technology ginseng designed
Number: maximum output voltage Umax≥100V；Maximum output current Imax=191mA；Slew rate SR=50.3V/us；Offset voltage <
1mV；Phase compensation capacitor Cc=5pF；Phase compensation resistance Rc=0 Ω；Current-limiting resistance Rlim=4.7 Ω.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111307956A (en) * | 2019-12-19 | 2020-06-19 | 中国航空工业集团公司北京长城航空测控技术研究所 | Guided wave signal excitation circuit based on linear frequency modulation signal |
| CN112928945A (en) * | 2021-01-29 | 2021-06-08 | 重庆两江卫星移动通信有限公司 | Combined type piezoceramics drive circuit |
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| CN102184148A (en) * | 2011-04-18 | 2011-09-14 | 北京航空航天大学 | AT96 bus controller IP (internet protocol) core based on FPGA (field programmable gate array) and construction method thereof |
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