CN101509935B - Space inertial sensor ground test device - Google Patents
Space inertial sensor ground test device Download PDFInfo
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- CN101509935B CN101509935B CN2009100611841A CN200910061184A CN101509935B CN 101509935 B CN101509935 B CN 101509935B CN 2009100611841 A CN2009100611841 A CN 2009100611841A CN 200910061184 A CN200910061184 A CN 200910061184A CN 101509935 B CN101509935 B CN 101509935B
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Abstract
The invention relates to a spatial inertial sensor ground test device which comprises proof mass, a capacitive displacement transducer, a controller, a static execution mechanism and a suspension mechanism; and a suspension point between the suspension mechanism and the proof mass is positioned at the centroid of the proof mass. The test device realizes test on the performance of a static suspension accelerometer on three rotational freedom, can simulate the space environment more truly on the ground, and provides more comprehensive test on the performance of the static suspension accelerometer.
Description
Technical field
The present invention relates to high precision inertial sensor field, be specifically related to space inertial sensor meter ground test device.
Background technology
The high precision inertial sensor in satellite navigation and location, do not have fields such as towing space flight, Gravity Satellite measurement, basic science SDI and have the important application prospect.The most ripe high precision inertial sensor of development at present is the electrostatic suspension accelerometer.The electrostatic suspension accelerometer mainly comprises the responsive quality (having another name called quality inspection) of cube inertia, capacitance displacement sensor, controller and static execution machine four parts, its ultimate principle is the displacement of capacitive displacement sensing detection quality inspection antipode plate framework, computing applies relevant voltage to capacitor plate through the controller feedback again, the electrostatic force that acts on the quality inspection is withdrawn into its equilibrium position with quality inspection, is applied to the acceleration that feedback voltage on the pole plate has been measured capacitor plate framework (being installed in certain moving object) this moment.High precision electrostatic suspension accelerometer because highly sensitive, range is little, is subjected to the restriction of terrestrial gravitation acceleration in ground development and test process.Suspension of colleague's proposition high pressure and torsion wire hang two kinds of schemes and compensate the terrestrial gravitation acceleration in the world, and the ground performance of carrying out the electrostatic suspension accelerometer on this basis detects, list of references E Willemenot and P Touboul, On-ground investigation of spaceaccelerometers noise with an electrostatic torsion pendulum, Rev Sci Instrum 71 (2000) 302-309; ZB Zhou, SB Qu, HB Tu, YZ Bai, SC Wu, J Luo, Progress of ground test of inertialsensor for ASTROD 1, Int.J.Mod.Phys.D 17 (2008) 985-992.The high pressure suspension scheme can be simulated a plurality of degree of freedom and test, and its deficiency is to be subjected to ground vibration and high pressure coupling effect, and its ground detection level further raising is restricted.Adopt the torsion wire suspension solutions can effectively overcome the ground vibration influence, can satisfy the high-resolution test of high precision electrostatic suspension accelerometer.
For verification scheme is rocked on the ground of electrostatic suspension accelerometer, because the electrostatic stiffness that the capacitive displacement sensing is introduced is far longer than the answer rigidity of suspension, and electrostatic stiffness is a negative value, therefore do not applying under the FEEDBACK CONTROL static moment condition, quality inspection is unsettled in the motion of torsional direction, has just in time simulated the electrostatic suspension accelerometer in the rail working condition.But be noted that, for rocking suspension usually, referring to Fig. 1, quality inspection only can be simulated the working condition of electrostatic suspension accelerometer at torsional direction, the motion of quality inspection is still stable on other degree of freedom, therefore, the torsion wire suspension solutions can only be simulated a torsional direction state of weightlessness usually.
Summary of the invention
The object of the present invention is to provide a kind of electrostatic suspension accelerometer ground test device, realize the performance test on three rotational freedoms of electrostatic suspension accelerometer.
A kind of space inertial sensor ground test device comprises quality inspection 1, capacitance displacement sensor, controller, static execution machine and hitch 3, and the hitch point that described hitch 3 and quality inspection are 1 is positioned at the barycenter 4 of quality inspection 1.
Technique effect of the present invention is embodied in: the present invention adopts torsion wire and quality inspection tie point is adjusted near the quality inspection barycenter, as shown in Figure 2, if hitch point just in time is positioned at quality inspection barycenter 4, then quality inspection 1 around the suspension center two swing circle endless, if hitch point is lower than quality inspection barycenter 4, also be unbalanced around two other rotation (Y and Z axle among the figure).Therefore, (can suitably regulate) in the time of near torsion wire just in time is suspended on the quality inspection barycenter according to the experiment needs, quality inspection can be simulated the rail condition of work except the rotation (X-axis among the figure) around the torsion wire direction, around the corresponding increase of swing circle of two other transverse axis (among the figure around Y-axis and Z axle) even make this degree of freedom instability, virtual space state of weightlessness preferably.Quality inspection is unsettled on these three torsional freedoms, only applies the static FEEDBACK CONTROL and just can keep quality inspection stablizing on this three degree of freedom.Wherein capacitance displacement sensor is used for measuring the displacement between capacitor plate 2 and the quality inspection 1, controller and static execution machine are used for the center that FEEDBACK CONTROL quality inspection 1 is in capacitor plate 2, like this, can carry out the performance test of three rotational freedoms of electrostatic suspension accelerometer on ground by torsion wire barycenter suspension solutions
Description of drawings
Fig. 1 is common torsion wire suspension solutions synoptic diagram;
Fig. 2 hangs synoptic diagram for the quality inspection barycenter;
Fig. 3 installs for barycenter and implements synoptic diagram.
Embodiment
Realize that the suspension barycenter hangs specific embodiments and has a lot, provide a kind of embodiment here.As shown in Figure 3, at first measure the barycenter of quality inspection 1, process a through hole at the barycenter place of quality inspection 1 then, the fixedly connected thing of suspension and suspension is installed in this through hole, the position of regulating the fixedly connected thing of suspension utilizes fixing glue to fix then, and the junction of suspension and quality inspection is positioned near the barycenter 4 of quality inspection 1 like this.The distance that can be provided in simultaneously between quality inspection surface fixing fine setting quality appropriate change suspension and quality inspection 1 barycenter obtains satisfactory result.
The present invention does not limit to and is used for the electrostatic suspension accelerometer, can be used for other inertial sensor test yet, no matter at any inertial sensor, as long as use technical solution of the present invention all to belong to protection scope of the present invention.
Claims (1)
1. a space inertial sensor ground test device comprises quality inspection, hitch, capacitance displacement sensor, controller and static execution machine, it is characterized in that the hitch point between described hitch and quality inspection is positioned at the barycenter of quality inspection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100611841A CN101509935B (en) | 2009-03-20 | 2009-03-20 | Space inertial sensor ground test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100611841A CN101509935B (en) | 2009-03-20 | 2009-03-20 | Space inertial sensor ground test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101509935A CN101509935A (en) | 2009-08-19 |
| CN101509935B true CN101509935B (en) | 2011-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100611841A Active CN101509935B (en) | 2009-03-20 | 2009-03-20 | Space inertial sensor ground test device |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033637B (en) * | 2012-12-26 | 2014-12-10 | 陕西宝成航空仪表有限责任公司 | Suspension fiber flexibleness supporting structure |
| CN103344219B (en) * | 2013-06-17 | 2015-05-20 | 华中科技大学 | Two-dimensional static relative inclinometer |
| CN108508234B (en) * | 2018-03-05 | 2019-09-17 | 清华大学 | Orthogonal Electrostatically suspended accelerometer sensitive structure |
| CN113607976B (en) * | 2021-07-29 | 2022-05-20 | 华中科技大学 | Inertial sensor performance testing device and method |
| CN113740929B (en) * | 2021-08-16 | 2022-06-21 | 华中科技大学 | Ground testing device and method for space inertial sensor |
| CN114324978A (en) * | 2021-12-17 | 2022-04-12 | 兰州空间技术物理研究所 | Ground static calibration method for accelerometer capture range |
| CN116577009B (en) * | 2023-07-04 | 2023-10-20 | 华中科技大学 | Triaxial decoupling measurement device for testing mass release impulse |
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2009
- 2009-03-20 CN CN2009100611841A patent/CN101509935B/en active Active
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| CN101509935A (en) | 2009-08-19 |
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