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Six-degree-of-freedom air bearing table disturbance torque determining method

A technology of disturbance torque and determination method, applied to force/torque/power measuring instruments, measuring devices, instruments, etc., to achieve the effects of simple production, clear concept and convenient use

Active Publication Date: 2015-09-23
BEIJING INST OF CONTROL ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For a long time, there has been a lack of means to compare and accurately measure data

Method used

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  • Six-degree-of-freedom air bearing table disturbance torque determining method
  • Six-degree-of-freedom air bearing table disturbance torque determining method
  • Six-degree-of-freedom air bearing table disturbance torque determining method

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Embodiment Construction

[0015] This measurement method can measure the disturbance torque of the air-floating ball bearing more accurately by measuring the principle of the speed of the air-floating ball bearing and the inertia of the system. The present invention shortens the time for measuring the moment of inertia by improving the existing measuring device for the moment of inertia, and combines the mature attitude angle measurement means to establish a complete method for measuring the disturbance moment. The system utilizes the essential characteristics of the air-floating ball bearing and iteratively solves the actual measurement data. It can not only accurately measure the moment of inertia of the system, but also improve the accuracy of the spacecraft ground dynamics simulation.

[0016] Such as figure 1 As shown, a novel method for determining the disturbance torque of a six-degree-of-freedom air-floor platform provided by the present invention, the steps are as follows:

[0017] (1) Fix th...

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Abstract

The invention relates to a six-degree-of-freedom air bearing table disturbance torque determining method. The method is used for measuring inertia features and disturbance torques of an orbiter and ascender simulation device in a moon weak impact rendezvous and docking ground full-physical simulation test. According to the invention, a method used for measuring disturbance torques at various kinds of directions of a six-degree-of-freedom air bearing table is provided for the first time. According to the method, an existing rotational inertia measuring device can be improved, and rotational inertia measuring time can be shortened; and a mature attitude angle measuring means is used in combination, so that a complete disturbance torque measuring method can be constructed; the essential characteristics of an air bearing ball are utilized, and iterative calculation is performed on actual measurement data, and therefore, the rotational inertia of a system can be accurately measured, and the accuracy of spacecraft ground dynamics simulation can be improved.

Description

technical field [0001] The invention relates to a method for determining the disturbance torque of a six-degree-of-freedom air bearing platform, which belongs to the field of full physical simulation on the ground of space vehicles. Background technique [0002] The six-degree-of-freedom air-floor platform is the core equipment for the full physical simulation test of the lunar weak impact rendezvous and grounding surface. The first degree of freedom of rotation is realized by high-precision air-floating ball bearings. Due to the constraints of processing and installation accuracy, there is a certain disturbance torque, which is an important factor restricting the test performance. For a long time, there has been a lack of means to compare and accurately measure data. Contents of the invention [0003] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, and provide a new method for determining the disturbance moment of ...

Claims

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Application Information

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IPC IPC(8): G01L5/00
Inventor 徐希悦贾永胡锦昌唐强朱志斌刘涛
Owner BEIJING INST OF CONTROL ENG
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