Device and method for measuring moment of inertia of a satellite
A technology of moment of inertia and measuring devices, which is applied in measuring devices, testing of machines/structural components, testing of static/dynamic balance, etc. It can solve problems such as higher testing costs, potential safety hazards, and inability to realize one-time clamping.
Active Publication Date: 2018-06-29
西安百纳电子科技有限公司
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Problems solved by technology
[0003] It can be seen that with the existing test device, it is impossible to realize the simultaneous measurement of the moment of inertia in three directions in one clamping
Moreover, the use of the above-mentioned test device requires repeated hoisting on various devices, which is likely to cause safety hazards, lengthen the test cycle, and increase the test cost.
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[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0037] refer to figure 1 with figure 2, the present invention provides a satellite moment of inertia measurement device, including a body 1, a rotating pre-twisting mechanism 2 installed on the top of the body 1, and a workbench 3 installed on the top of the rotating pre-twisting mechanism 2. A swing mechanism 5 is installed on the workbench 3, and a first locking device 7 is provided between the machine body 1 and the workbench 3, and the first cycle measur...
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The invention discloses a device and method for measuring rotational inertia of a satellite based on a torsional pendulum method and a compound pendulum method in principle and relates to the technical field of rotational inertia measuring.The device comprises a machine body, a rotary pre-twisting mechanism mounted on the top of the machine body and a workbench mounted on the top of the rotary pre-twisting mechanism.The rotary pre-twisting mechanism comprises a twisted bar, wherein the bottom end of the twisted bar is fixed to the machine body, and the top end of the twisted bar is fixed to the workbench. Fixed supporting frames are mounted on the workbench. Swing mechanisms are rotationally mounted on the fixed supporting frames through rotary shaft assemblies. A rotatable supporting rotation device is mounted on the swing mechanism.After the satellite is mounted on the supporting rotation device, the workbench and the swing mechanisms do Y-direction reciprocating swing periodic motion under the action of restoring force of the twisted bar, the swing mechanisms do X / Z-direction reciprocating swing periodic motion under the action of elastic restoring force of a tension spring and gravity of itself, the rotational inertia of the satellite in three directions can be calculated by measuring the swing periods in the Y-direction and the X / Z-direction, and measurement is convenient and fast.
Description
technical field [0001] The invention relates to the technical field of moment of inertia measurement, in particular to a device and method for measuring moment of inertia of a satellite. Background technique [0002] The moment of inertia of the satellite is measured to make it meet the requirements of carrying and attitude control. Satellites are usually connected to flowerpot-like structural parts on one side, and there are no docking interfaces on the other sides. Therefore, when measuring the moment of inertia in the other two directions, it is necessary to use special tooling to realize the transformation of its attitude ( Turn over), then hoist and install on the L-shaped bracket for testing. [0003] It can be seen that, with the existing testing device, simultaneous measurement of moment of inertia in three directions cannot be realized in one clamping. Moreover, the above test device needs to be hoisted repeatedly on various devices, which may easily cause safety ...
Claims
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IPC IPC(8): G01M1/10
CPCG01M1/10
Inventor 申康刘子谦杨崇斌李荣梧贾志华刘辉易涛
Owner 西安百纳电子科技有限公司