CN109164275A - A kind of servo accelerometer dynamic property detection system and method - Google Patents
A kind of servo accelerometer dynamic property detection system and method Download PDFInfo
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- CN109164275A CN109164275A CN201810818830.3A CN201810818830A CN109164275A CN 109164275 A CN109164275 A CN 109164275A CN 201810818830 A CN201810818830 A CN 201810818830A CN 109164275 A CN109164275 A CN 109164275A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
Abstract
The present invention discloses a kind of servo accelerometer dynamic property detection system and method.The system comprises accelerometer signal processing units, for acquiring, handling and export accelerometer signal；Signal generating unit, for generating test desired signal；Adder, the signal that signal and signal generating unit for being added the output of accelerometer signal processing unit generate；Dynamic performance unit of testing and controlling selects simultaneously output par, c signal for receiving the signal of adder, signal generating unit and the output of accelerometer signal processing unit；Frequency analysis unit, the signal for selecting and exporting for receiving dynamic performance unit of testing and controlling carry out the analysis of time domain or frequency domain, to realize closed loop and the test of the properties of open loop in dynamic test.System and method of the invention are applicable in current-output type and voltage output type accelerometer simultaneously.In addition, it is not necessary that destroying accelerometer servo circuit, and test item can be adjusted flexibly.
Description
Technical field
The invention belongs to accelerometer technical field of performance test, and in particular to a kind of servo accelerometer dynamic property inspection
Examining system and method.
Background technique
In the fields such as Aeronautics and Astronautics, navigation, accelerometer as one of the important composition in inertial navigation system,
Performance is directly related to carrier navigation accuracy, and significance level obtains consistent approval in the industry.In accelerometer appraisement system,
Static properties determines the stability and repeatability of inertial navigation system, at the same time, carries out different frequency, different rates in carrier
In motion process, dynamic property equally directly affects the precision of navigation system.In general, the dynamic property of accelerometer includes band
Width, overshoot, low-frequency gain, phase angle remaining, high-frequency gain etc..So the dynamic property of accelerometer needs science and side
Just test method is evaluated.
According to " GJB1037A-2004 single shaft pendulum-type servo linear accelerometer test method ", accelerometer dynamic property is pressed
It is tested according to electrical analogue method, needs for external signal to be linked into accelerometer servo circuit, then in accelerometer output end
Signal acquisition process is carried out, is then analyzed by signal and completes test.The method is applicable in just for current-output type accelerometer,
Voltage output type accelerometer cannot then use.In addition, the method needs to destroy accelerometer servo in the actual operation process
Circuit is added external signal from circuit centre and is tested, has process risk, and cumbersome.Moreover, using the method into
When row different performance is evaluated, needs to choose different test points and be acquired signal, it is cumbersome.
Summary of the invention
In view of the above situation of the prior art, the object of the present invention is to provide a kind of detections of servo accelerometer dynamic property
System and method, the system and method in the actual operation process, do not need to destroy accelerometer servo circuit, process risk
It is small and easy to operate.
According to one aspect of the present invention, a kind of servo accelerometer dynamic property detection system is provided, comprising:
Accelerometer signal processing unit, for acquiring accelerometer current signal or voltage signal, to the electricity of acquisition
It flows signal and carries out I-V conversion, or the voltage signal of acquisition is amplified, and the signal that exports that treated；
Signal generating unit, for generating test desired signal according to dynamic performance testing needs；
The signal that adder, signal for exporting accelerometer signal processing unit and signal generating unit generate into
The superposition of row addition；
Dynamic performance unit of testing and controlling, for receiving adder, signal generating unit and accelerometer letter simultaneously
The signal of number processing unit output, requires according to dynamic performance testing, selects and output signal, and the signal can be received
Part or all of signal；
Frequency analysis unit, the signal for selecting and exporting for receiving dynamic performance unit of testing and controlling, when progress
The analysis of domain or frequency domain can avoid traditional test mistake to realize closed loop and the test of the properties of open loop in dynamic test
In journey by test point it is continuous adjust caused by complexity and unreliable.
Other side according to the invention provides a kind of servo accelerometer dynamic property detection method, comprising:
Accelerometer current signal or voltage signal are acquired, I-V conversion is carried out to the current signal of acquisition, or to acquisition
Voltage signal amplify, and export treated signal；
According to dynamic performance testing needs, test desired signal is generated；
Treated by described in signal and test desired signal progress addition superposition；
Treated described in receiving simultaneously signal, test desired signal and superposed signal, require according to dynamic performance testing,
It selects and output signal, the signal can be some or all of reception signal；
The signal for receiving the selection and exporting, carries out the analysis of time domain or frequency domain, closes in dynamic test to realize
Ring and the test of the properties of open loop.
System and method of the invention have the advantages that
It is applicable that current or voltage signal exports accelerometer: the present invention is converted using I-V and the principle of voltage amplification,
Using the accelerometer signal processing unit of normalization circuit, to the current signal or voltage signal of accelerometer output
It is handled, obtains unified voltage signal and be output to adder link.
Adder realizes signal loading: the present invention uses the principle of adder in operation amplifier, at accelerometer signal
The signal that the signal and signal generating unit for managing unit output generate carries out physics superposition, physically upper to realize add operation.
Meanwhile using the form of adder, the drawbacks of accelerometer servo circuit is destroyed in classical signal loading procedure is avoided.
Test item is adjusted flexibly: the present invention tests the selection of signal using the control of dynamic performance unit of testing and controlling
And output, to complete different test items.The uncertainty of human intervention in traditional test is avoided, solution passes through test
The continuous adjustment of point carries out different test and bring complexity and unreliable.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of servo accelerometer dynamic property detection system of the invention.
Wherein, 1- accelerometer signal processing unit, 2- signal generating unit, 3- adder, 4- dynamic performance are surveyed
Try control unit, 5- frequency analysis unit.
Specific embodiment
Objects, technical solutions and advantages for a clearer understanding of the present invention, with reference to the accompanying drawings and embodiments, to this
Invention is further elaborated.
Referring to Fig. 1, servo accelerometer dynamic property detection system of the invention includes accelerometer signal processing unit
1, signal generating unit 2, adder 3, dynamic performance unit of testing and controlling 4, frequency analysis unit 5.In testing, it will watch
The output access accelerometer signal processing unit 1 of accelerometer is taken, current signal or voltage signal are believed by accelerometer
After number processing unit 1 is converted to voltage signal, it is output to 3 one input terminals of adder and dynamic performance unit of testing and controlling
4 input terminal.Signal generating unit 2 generates waveform signal, is output to second input terminal and system dynamic of adder 3
Second input terminal of performance test control unit 4.The signal and signal generating unit that accelerometer signal processing unit 1 exports
The signal of 2 outputs carries out add operation in adder 3, is as a result output to the third of dynamic performance unit of testing and controlling 4
A input terminal.Dynamic performance unit of testing and controlling 4 is according to needed for closed loop in dynamic test and the test of the properties of open loop
Signal, select the part signal in the three tunnel input signals received, be output in frequency analysis unit 5.Frequency analysis list
The signal that 5 pairs of member receives carries out frequency analysis, obtains final result, to realize the items of closed loop and open loop in dynamic test
Performance test.
In the following, carrying out concrete example explanation to accelerometer dynamic performance testing is carried out using the present invention.For example, carry out
Electrical analogue method open loop frequency attribute testing defined in " GJB1037A-2004 single shaft pendulum-type servo linear accelerometer test method "
When, the output of servo accelerometer is accessed into accelerometer signal processing unit 1, the electric current of current signal output type accelerometer
Voltage signal is converted by I-V and be enlarged into signal, and the voltage signal of voltage signal output type accelerometer is by being enlarged into electricity
Signal is pressed, an input terminal of 3 one input terminals of adder and dynamic performance unit of testing and controlling 4 is output to.Signal hair
Raw unit 2 generates the sine sweep signal of 10Hz to 5KHz, is output to second input terminal and dynamic performance of adder 3
Second input terminal of unit of testing and controlling 4.The voltage signal and signal generating unit that accelerometer signal processing unit 1 exports
The sine sweep signal of 2 outputs carries out add operation in adder 3, is as a result output to dynamic performance unit of testing and controlling
4 third input terminal.The signal that dynamic performance unit of testing and controlling 4 selects accelerometer signal processing unit 1 to export
The sine sweep signal exported with signal generating unit 2 is sent into two channels CH1 and CH2 of frequency analysis unit 5.Frequency point
Analysis unit 5 carries out frequency analysis to the two paths of signals received, obtains final result.
In addition, the electricity mould defined in progress " GJB1037A-2004 single shaft pendulum-type servo linear accelerometer test method "
When quasi- method open loop frequency attribute testing, the output of servo accelerometer is accessed into accelerometer signal processing unit 1, current signal
Voltage signal is converted by I-V and be enlarged into the current signal of output type accelerometer, voltage signal output type accelerometer
Voltage signal is output to 3 one input terminals of adder and dynamic performance unit of testing and controlling 4 by being enlarged into voltage signal
An input terminal.Signal generating unit 2 generates the sine sweep signal of 10Hz to 5KHz, is output to second of adder 3
Second input terminal of input terminal and dynamic performance unit of testing and controlling 4.The electricity that accelerometer signal processing unit 1 exports
The sine sweep signal that pressure signal and signal generating unit 2 export carries out add operation in adder 3, is as a result output to system
The third input terminal of dynamic performance testing control unit 4.Dynamic performance unit of testing and controlling 4 selects adder 3 to export
Signal and signal generating unit 2 export sine sweep signal, be sent into frequency analysis unit 5 two channels CH1 and CH2.
Frequency analysis unit 5 carries out frequency analysis to the two paths of signals received, obtains final result.
Compared to test macro and side specified in " GJB1037A-2004 single shaft pendulum-type servo linear accelerometer test method "
Method, the present invention is applicable not only to current-output type accelerometer, and is suitable for voltage output type accelerometer, meanwhile,
Access point of two tests without changing input signal, and the test point of output sampling end.
Claims (2)
1. a kind of servo accelerometer dynamic property detection system, comprising:
Accelerometer signal processing unit believes the electric current of acquisition for acquiring accelerometer current signal or voltage signal
Number I-V conversion is carried out, or the voltage signal of acquisition is amplified, and the signal that exports that treated；
Signal generating unit, for generating test desired signal according to dynamic performance testing needs；
Adder, the signal that signal and signal generating unit for exporting accelerometer signal processing unit generate are added
Method superposition；
Dynamic performance unit of testing and controlling, for receiving at adder, signal generating unit and accelerometer signal simultaneously
The signal for managing unit output, requires according to dynamic performance testing, selects simultaneously output signal；
Frequency analysis unit, the signal for selecting and exporting for receiving dynamic performance unit of testing and controlling, carry out time domain or
The analysis of person's frequency domain, to realize closed loop and the test of the properties of open loop in dynamic test.
2. a kind of servo accelerometer dynamic property detection method, comprising:
Accelerometer current signal or voltage signal are acquired, I-V conversion, or the electricity to acquisition are carried out to the current signal of acquisition
Pressure signal amplifies, and exports treated signal；
According to dynamic performance testing needs, test desired signal is generated；
Treated by described in signal and test desired signal progress addition superposition；
Treated described in receiving simultaneously signal, test desired signal and superposed signal, require according to dynamic performance testing, select
And output signal；
Receive the selection and the signal that exports, carry out the analysis of time domain or frequency domain, thus realize in dynamic test closed loop and
The properties of open loop are tested.
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| CN201810818830.3A CN109164275B (en) | 2018-07-24 | 2018-07-24 | System and method for detecting dynamic performance of servo accelerometer |
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| CN201810818830.3A CN109164275B (en) | 2018-07-24 | 2018-07-24 | System and method for detecting dynamic performance of servo accelerometer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109905291A (en) * | 2019-02-26 | 2019-06-18 | 北京精密机电控制设备研究所 | The synchronous TT&C system of highly reliable bifrequency digital-to-analogue based on RS422 communication |
| CN110988534A (en) * | 2019-12-03 | 2020-04-10 | 北京特种机械研究所 | Performance test method for universal servo system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2492883Y (en) * | 2000-09-06 | 2002-05-22 | 中国科学院光电技术研究所 | Dynamic signal analyzer |
| RU2272299C1 (en) * | 2005-03-22 | 2006-03-20 | Владимир Олегович Доронин | Method for remote calibration of acceleration meter included in measuring transformer and device for realization of said method |
| CN104034920A (en) * | 2013-03-08 | 2014-09-10 | 飞思卡尔半导体公司 | Systems And Methods For Monitoring Accelerometers |
| CN104090126A (en) * | 2014-05-21 | 2014-10-08 | 浙江大学 | Accelerometer bandwidth testing method |
| CN104237564A (en) * | 2014-09-04 | 2014-12-24 | 兰州空间技术物理研究所 | High-precision dynamic calibration method applied to quartz flexible accelerometer |
-
2018
- 2018-07-24 CN CN201810818830.3A patent/CN109164275B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2492883Y (en) * | 2000-09-06 | 2002-05-22 | 中国科学院光电技术研究所 | Dynamic signal analyzer |
| RU2272299C1 (en) * | 2005-03-22 | 2006-03-20 | Владимир Олегович Доронин | Method for remote calibration of acceleration meter included in measuring transformer and device for realization of said method |
| CN104034920A (en) * | 2013-03-08 | 2014-09-10 | 飞思卡尔半导体公司 | Systems And Methods For Monitoring Accelerometers |
| CN104090126A (en) * | 2014-05-21 | 2014-10-08 | 浙江大学 | Accelerometer bandwidth testing method |
| CN104237564A (en) * | 2014-09-04 | 2014-12-24 | 兰州空间技术物理研究所 | High-precision dynamic calibration method applied to quartz flexible accelerometer |
Non-Patent Citations (1)
| Title |
|---|
| 张晞 等: "数字闭环加速度计的带宽测试", 《光学精密工程》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109905291A (en) * | 2019-02-26 | 2019-06-18 | 北京精密机电控制设备研究所 | The synchronous TT&C system of highly reliable bifrequency digital-to-analogue based on RS422 communication |
| CN110988534A (en) * | 2019-12-03 | 2020-04-10 | 北京特种机械研究所 | Performance test method for universal servo system |
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