CN112880916A - Dynamic unbalance amount measuring circuit of dynamically tuned gyroscope - Google Patents
Dynamic unbalance amount measuring circuit of dynamically tuned gyroscope Download PDFInfo
- Publication number
- CN112880916A CN112880916A CN202011345817.4A CN202011345817A CN112880916A CN 112880916 A CN112880916 A CN 112880916A CN 202011345817 A CN202011345817 A CN 202011345817A CN 112880916 A CN112880916 A CN 112880916A
- Authority
- CN
- China
- Prior art keywords
- circuit
- signal
- dynamic unbalance
- resolving
- dynamically tuned
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000001914 filtration Methods 0.000 claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- 238000004891 communication Methods 0.000 claims abstract description 14
- 230000003321 amplification Effects 0.000 claims abstract description 13
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 13
- 238000005259 measurement Methods 0.000 abstract description 8
- 238000012545 processing Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 6
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/14—Determining imbalance
- G01M1/16—Determining imbalance by oscillating or rotating the body to be tested
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Gyroscopes (AREA)
Abstract
A dynamic unbalance measuring circuit of a dynamically tuned gyroscope comprises a filtering operation amplifying circuit connected with a gyroscope signal input interface, wherein the filtering operation amplifying circuit is connected with a signal conversion circuit, the signal conversion circuit is connected with a resolving circuit, and the resolving circuit is connected with an RS422 communication interface; the filtering operational amplification circuit performs first-order band-pass filtering on the analog signal output by the dynamically tuned gyroscope to filter out interference clutter and performs operational amplification to obtain a standard sinusoidal analog signal; the signal conversion circuit converts the sine analog signal obtained by the filtering operation amplifying circuit into a 16-bit digital signal; the resolving circuit calculates the 16-bit digital signal obtained by the signal conversion circuit to obtain the dynamic unbalance amount of the dynamically tuned gyroscope; and the RS422 communication interface transmits the dynamic unbalance obtained by the resolving circuit to a user computer through RS422 serial port communication. The invention has the characteristics of less analog circuit processing links and high measurement precision.
Description
Technical Field
The invention relates to a dynamic unbalance measuring circuit of a dynamically tuned gyroscope.
Background
The dynamic balance of the dynamically tuned gyroscope is to ensure that the gyroscope obtains a highly stable rotation axis system, thereby providing stable angular momentum. Therefore, the measurement accuracy and stability of the gyroscope dynamic unbalance amount play a very key role in the gyroscope dynamic balance processing process. The dynamic unbalance measurement is generally based on analog circuit design, and has the defects of complex circuit processing link and lower measurement precision.
Disclosure of Invention
The present invention is directed to a dynamic unbalance measurement circuit for a dynamically tuned gyroscope to solve the above-mentioned problems in the prior art.
The technical scheme adopted for achieving the purpose is that the dynamic unbalance measuring circuit of the dynamically tuned gyroscope comprises a filtering operation amplifying circuit connected with a gyroscope signal input interface, wherein the filtering operation amplifying circuit is connected with a signal conversion circuit, the signal conversion circuit is connected with a resolving circuit, and the resolving circuit is connected with an RS422 communication interface;
the filtering operational amplification circuit performs first-order band-pass filtering on the analog signal output by the dynamically tuned gyroscope to filter out interference clutter and performs operational amplification to obtain a standard sinusoidal analog signal;
the signal conversion circuit converts the sine analog signal obtained by the filtering operation amplifying circuit into a 16-bit digital signal;
the resolving circuit carries out sinusoidal curve fitting on the 16-bit digital signal obtained by the signal conversion circuit, calculates the amplitude of the sinusoidal signal, and calculates the dynamic unbalance of the dynamically tuned gyroscope according to the amplitude of the sinusoidal signal and a dynamic unbalance relational expression;
and the RS422 communication interface transmits the dynamic unbalance obtained by the resolving circuit to a user computer through RS422 serial port communication.
Advantageous effects
Compared with the prior art, the invention has the following advantages.
1. The analog circuit has the advantages of few processing links and high measurement precision;
2. the mobile unbalance amount information can be transmitted through the RS422 serial port, and the industrial use environment is met.
Drawings
FIG. 1 is a signal flow diagram of a dynamic unbalance measurement circuit board of a dynamically tuned gyroscope according to the present invention;
FIG. 2 is a schematic diagram of a filtering operational amplifier circuit according to the present invention;
FIG. 3 is a block diagram of a signal conversion circuit according to the present invention;
FIG. 4 is a schematic diagram of the DSP calculating circuit according to the present invention;
fig. 5 is a schematic diagram of an RS422 interface circuit of the dynamic unbalance measurement circuit board of the dynamically tuned gyroscope according to the present invention.
Detailed Description
A dynamic unbalance measuring circuit of a dynamically tuned gyroscope comprises a filtering operation amplifying circuit 2 connected with a gyroscope signal input interface 1, as shown in figure 1, the filtering operation amplifying circuit 2 is connected with a signal conversion circuit 3, the signal conversion circuit 3 is connected with a resolving circuit 4, and the resolving circuit 4 is connected with an RS422 communication interface 5;
the filtering operational amplification circuit 2 performs first-order band-pass filtering to remove interference clutter and operational amplification on the analog signal output by the dynamically tuned gyroscope to obtain a standard sinusoidal analog signal;
the signal conversion circuit 3 converts the sine analog signal obtained by the filtering operation amplifying circuit 2 into a 16-bit digital signal;
the resolving circuit 4 carries out sinusoidal curve fitting on the 16-bit digital signal obtained by the signal conversion circuit 3, calculates the amplitude of the sinusoidal signal, and calculates the dynamic unbalance of the dynamically tuned gyroscope according to the amplitude of the sinusoidal signal and a dynamic unbalance relational expression;
and the RS422 communication interface 5 transmits the dynamic unbalance obtained by the resolving circuit 4 to a user computer through RS422 serial port communication.
In the invention, a dynamically tuned gyroscope output analog signal is connected to a filtering operational amplification circuit 2 through a gyroscope signal input interface 1; the RS422 communication interface 5 is interconnected with the RS422 communication interface of the user computer; as shown in fig. 1.
Firstly, carrying out primary differential amplification on differential analog signals output by the dynamically tuned gyroscope through a programmable operational amplifier (AD 8251), wherein the amplification factor of 1-8 times can be configured according to the rotating speed of the gyroscope, the amplification factor is large when the rotating speed of the gyroscope is low, and the amplification factor is small when the rotating speed of the gyroscope is high; the filtering frequency is a 2K first-order active low-pass filter, a filtering circuit adopts an ADA4177-2, and accurate sinusoidal analog signals are obtained after high-frequency interference is removed; the filter amplifying circuit is shown in fig. 2:
second, accurate sine and cosine analog signal input signal conversion circuits of the coarse and fine channels obtain 16-bit binary digital signals of the coarse and fine channels, and the circuit adopts a single-chip digital converter (AD 2S 1210), as shown in FIG. 3;
thirdly, the resolving circuit converts the 16-bit binary digit number of the coarse channel and the fine channel into a single-precision floating point type number, combines and resolves the angle information of the coarse channel and the fine channel, and corrects and judges the angle information to obtain absolute position information; the high-precision active crystal oscillator frequency division is carried out to obtain a 1ms time system signal, and the signal triggers DSP external interruption through an IO pin of a DSP (DSP 28335); after the external interruption of the DSP is triggered, reading absolute position information obtained by analysis of a resolving circuit, wherein the structure diagram of the circuit is shown in FIG. 4;
fourthly, the random synchronous latching signal of the user is input to the resolving circuit through the synchronous signal interface circuit, as shown in fig. 5, after high-speed optical coupling isolation and signal level conversion, as shown in fig. 1.
Claims (1)
1. A dynamic unbalance measuring circuit of a dynamically tuned gyroscope comprises a filtering operation amplifying circuit (2) connected with a gyroscope signal input interface (1), and is characterized in that the filtering operation amplifying circuit (2) is connected with a signal conversion circuit (3), the signal conversion circuit (3) is connected with a resolving circuit (4), and the resolving circuit (4) is connected with an RS422 communication interface (5);
the filtering operational amplification circuit (2) carries out first-order band-pass filtering to remove interference clutter and operational amplification on the analog signal output by the dynamically tuned gyroscope to obtain a standard sinusoidal analog signal;
the signal conversion circuit (3) converts the sine analog signal obtained by the filtering operation amplifying circuit (2) into a 16-bit digital signal;
the resolving circuit (4) carries out sine curve fitting on the 16-bit digital signal obtained by the signal conversion circuit (3), calculates the amplitude of the sine signal, and calculates the dynamic unbalance of the dynamically tuned gyroscope according to the amplitude of the sine signal and a dynamic unbalance relational expression;
and the RS422 communication interface (5) transmits the dynamic unbalance amount obtained by the resolving circuit (4) to a user computer through RS422 serial port communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011345817.4A CN112880916A (en) | 2020-11-26 | 2020-11-26 | Dynamic unbalance amount measuring circuit of dynamically tuned gyroscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011345817.4A CN112880916A (en) | 2020-11-26 | 2020-11-26 | Dynamic unbalance amount measuring circuit of dynamically tuned gyroscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112880916A true CN112880916A (en) | 2021-06-01 |
Family
ID=76043086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011345817.4A Withdrawn CN112880916A (en) | 2020-11-26 | 2020-11-26 | Dynamic unbalance amount measuring circuit of dynamically tuned gyroscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112880916A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506859A (en) * | 2011-10-31 | 2012-06-20 | 北京航空航天大学 | Gyro signal acquisition circuit and signal filtering system for three-axis inertially-stabilized platform |
| JP2013015458A (en) * | 2011-07-05 | 2013-01-24 | Sugawara Sekkei Jimusho Kk | Method and apparatus for measuring unbalance quantity of rotor |
| CN107247437A (en) * | 2017-04-01 | 2017-10-13 | 北京航天控制仪器研究所 | A kind of digital demodulation system of three float-type gyroscopes |
| CN110160514A (en) * | 2019-05-31 | 2019-08-23 | 东南大学 | A kind of silicon MEMS gyroscopes multiloop Digitized Closed Loop control device |
| CN110597129A (en) * | 2019-09-20 | 2019-12-20 | 陕西航天时代导航设备有限公司 | Digital demodulation method for output signal of flexible gyroscope |
-
2020
- 2020-11-26 CN CN202011345817.4A patent/CN112880916A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013015458A (en) * | 2011-07-05 | 2013-01-24 | Sugawara Sekkei Jimusho Kk | Method and apparatus for measuring unbalance quantity of rotor |
| CN102506859A (en) * | 2011-10-31 | 2012-06-20 | 北京航空航天大学 | Gyro signal acquisition circuit and signal filtering system for three-axis inertially-stabilized platform |
| CN107247437A (en) * | 2017-04-01 | 2017-10-13 | 北京航天控制仪器研究所 | A kind of digital demodulation system of three float-type gyroscopes |
| CN110160514A (en) * | 2019-05-31 | 2019-08-23 | 东南大学 | A kind of silicon MEMS gyroscopes multiloop Digitized Closed Loop control device |
| CN110597129A (en) * | 2019-09-20 | 2019-12-20 | 陕西航天时代导航设备有限公司 | Digital demodulation method for output signal of flexible gyroscope |
Non-Patent Citations (1)
| Title |
|---|
| 信光成 等: "基于任务的微机电惯性系统规模化测试技术研究", 《导航定位与授时》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100587400C (en) | Resonance type optical fiber peg-top signal detection method based on coordinate rotation digital computer algorithm | |
| CN102650526B (en) | Open-loop detecting circuit for frequency modulated continuous wave optical fiber gyroscope based on phase comparison | |
| CN103604500B (en) | The detection system of raster scan type spectrometer and detection method | |
| CN109510625A (en) | A kind of high-precision AD sampling of quartz flexible accelerometer and conversion circuit | |
| CN102680728A (en) | Motor rotation speed measuring method used in precise electromechanical equipment | |
| CN102419397A (en) | Phase difference measuring device and method | |
| CN101661047A (en) | Output conversion device of strapdown inertial navigation accelerometer | |
| CN112880916A (en) | Dynamic unbalance amount measuring circuit of dynamically tuned gyroscope | |
| CN102901495B (en) | Angular displacement optical fiber gyroscope | |
| CN103335600A (en) | Ratio fringe counting method based on dual F-P interferometer and displacement sensor demodulating system of method | |
| CN100458864C (en) | Method for high precision collecting weak signal and circuit thereof | |
| CN102506715B (en) | Displacement data processing method based on microchip laser feedback interferometer | |
| CN214410266U (en) | Multifunctional high-precision position and angle sensor real-time digital demodulation system | |
| CN211826966U (en) | Load digital processing board | |
| CN113375701A (en) | Two-channel absolute type circle induction synchronizer angle measurement circuit | |
| CN110243401B (en) | Photoelectric cell of optical encoder and decoding device of optical magnetic encoder | |
| CN213396928U (en) | Angle measuring circuit of circular induction synchronizer | |
| CN112350674A (en) | Double-channel multi-antipode rotary transformer circuit | |
| CN202453137U (en) | Digital differential pressure transmitter | |
| CN215572999U (en) | Angle measuring circuit of circular induction synchronizer | |
| CN202836573U (en) | Novel angular displacement optical fiber gyroscope | |
| CN112113499A (en) | Angle measuring circuit of inertia test equipment rotary table suitable for circular induction synchronizer | |
| CN111130660B (en) | Phase noise measuring probe circuit | |
| CN205157648U (en) | Non -blind area digital phasemeter device | |
| CN201983903U (en) | Device for detecting small signal of dynamic balancing machine by using lock-in amplifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210601 |
|
| WW01 | Invention patent application withdrawn after publication |