CN112240938A - Accelerometer stabilization processing method - Google Patents
Accelerometer stabilization processing method Download PDFInfo
- Publication number
- CN112240938A CN112240938A CN201910668925.6A CN201910668925A CN112240938A CN 112240938 A CN112240938 A CN 112240938A CN 201910668925 A CN201910668925 A CN 201910668925A CN 112240938 A CN112240938 A CN 112240938A
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- China
- Prior art keywords
- accelerometer
- temperature
- processing method
- stabilization processing
- stress
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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
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
Abstract
The invention provides an accelerometer stabilization processing method. The method mainly aims at the defects of the prior art and provides the accelerometer stabilizing treatment method which accelerates the release of residual stresses such as assembly stress, processing stress and the like so as to improve the stability of the accelerometer.
Description
Technical Field
The invention relates to stabilization, in particular to a method for stabilizing an accelerometer.
Background
The accelerometer is used as an important instrument for inertial measurement, has the advantages of high precision, high long-term repeatability and high reliability, and is widely applied to numerous fields such as aerospace, aviation, navigation, petroleum and the like. Due to the fact that the accelerometer is special in structure, relates to subjects such as instruments, mechanics, control, electronics and materials, and is influenced by environmental loads such as temperature and vibration and the characteristics of materials of components inside the accelerometer, parameters of the accelerometer can drift nonlinearly with time, and the stability of an inertial system is directly influenced. Therefore, in order to ensure the service performance of the inertial system, the system needs to be continuously subjected to regular maintenance and calibration work.
With the development of science and technology, the requirement on the stability of the accelerometer is higher and higher, and because the use and maintenance cost of the existing system is high, the stress of the accelerometer needs to be released in the manufacturing process to improve the stability of the accelerometer, and further improve the stability of the whole inertial system. Therefore, a test method for stabilizing the accelerometer is urgently needed.
Disclosure of Invention
The invention aims to provide an accelerometer stabilizing treatment method aiming at the defects of the prior art, which accelerates the release of residual stress such as assembly stress, processing stress and the like, and is specifically implemented by the following steps:
firstly, an accelerometer mounting tool is designed, the accelerometer mounting tool is favorable for fixing an accelerometer on a vertical vibrating table, the accelerometer mounting tool is provided with at least 12 accelerometer mounting holes, at least 3 groups of connecting holes and connecting holes of the vibrating table are arranged, and the 3 groups of connecting holes are respectively in three axial directions.
And secondly, performing frequency sweep vibration of not less than 1 hour, 10g and 50 Hz-2000 Hz of peak value, not less than 1 hour, 6g and 50 Hz-2000 Hz of peak value and not less than 1 hour, 3g and 50 Hz-2000 Hz of peak value.
And thirdly, carrying out temperature impact at-45 ℃ to +85 ℃ for no less than 5 times, wherein the temperature change rate is no less than 30 ℃/min. Each temperature impact condition: cooling to-45 deg.C from normal temperature, and keeping the temperature at-45 deg.C for 50 min; then heating to 85 deg.C, and keeping the temperature at 85 deg.C for 50 min.
Fourthly, not less than 5 times of temperature circulation at minus 45 ℃ to plus 85 ℃ is carried out, and the temperature change rate is 5 ℃/min. Conditions for each temperature cycle: cooling to-45 deg.C from normal temperature, and keeping the temperature at-45 deg.C for 6 h; then the temperature is raised to 85 ℃, and the temperature is kept for 6 hours under the state of high temperature of 85 ℃.
And fifthly, storing at the high temperature of 70 ℃ for not less than 48 h.
Drawings
Figure 1 is a schematic view of an accelerometer mounting fixture.
Detailed Description
Fig. 1 is a schematic view of an accelerometer mounting tool according to the present invention. The device comprises an accelerometer placing groove 1, an accelerometer fixing screw mounting hole 2, a tool and a vibration table connecting hole 3. 6 accelerometers can be respectively arranged on the front side and the back side of the accelerometer installation tool; the tool and the vibrating table connecting hole 3 can realize that the three axial directions of an accelerometer input shaft, an accelerometer output shaft and an accelerometer pendulum shaft which are arranged on the tool are respectively vertical to the table surface of the vibrating table.
Claims (2)
1. A method for stabilizing an accelerometer is provided.
2. The method of claim 1, wherein the release of residual stresses such as mounting stress and machining stress of the accelerometer is accelerated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910668925.6A CN112240938A (en) | 2019-07-16 | 2019-07-16 | Accelerometer stabilization processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910668925.6A CN112240938A (en) | 2019-07-16 | 2019-07-16 | Accelerometer stabilization processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112240938A true CN112240938A (en) | 2021-01-19 |
Family
ID=74168023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910668925.6A Pending CN112240938A (en) | 2019-07-16 | 2019-07-16 | Accelerometer stabilization processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112240938A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5284057A (en) * | 1990-12-11 | 1994-02-08 | Delco Electronics Corporation | Microaccelerometer having low stress bonds and means for preventing excessive Z-axis deflection |
| CN103018487A (en) * | 2012-11-30 | 2013-04-03 | 航天科工惯性技术有限公司 | Method for stabilizing accelerometer |
| CN203037670U (en) * | 2012-11-30 | 2013-07-03 | 航天科工惯性技术有限公司 | Stabilizing processing device of accelerometer |
| CN106556716A (en) * | 2015-09-30 | 2017-04-05 | 航天科工惯性技术有限公司 | A kind of accelerometer torquer stabilization treatment method |
| CN106841678A (en) * | 2015-12-04 | 2017-06-13 | 航天科工惯性技术有限公司 | Accelerometer watch core stabilization treatment method |
-
2019
- 2019-07-16 CN CN201910668925.6A patent/CN112240938A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5284057A (en) * | 1990-12-11 | 1994-02-08 | Delco Electronics Corporation | Microaccelerometer having low stress bonds and means for preventing excessive Z-axis deflection |
| CN103018487A (en) * | 2012-11-30 | 2013-04-03 | 航天科工惯性技术有限公司 | Method for stabilizing accelerometer |
| CN203037670U (en) * | 2012-11-30 | 2013-07-03 | 航天科工惯性技术有限公司 | Stabilizing processing device of accelerometer |
| CN106556716A (en) * | 2015-09-30 | 2017-04-05 | 航天科工惯性技术有限公司 | A kind of accelerometer torquer stabilization treatment method |
| CN106841678A (en) * | 2015-12-04 | 2017-06-13 | 航天科工惯性技术有限公司 | Accelerometer watch core stabilization treatment method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210119 |