Optimization method for measuring point of measuring sensor for satellite angular rate based on correlation matrix

A technology for measuring sensors and correlation matrices, applied in the aerospace field, can solve problems such as attitude loss and energy exhaustion, and achieve the effects of improving separability, improving detectability, and improving on-orbit fault diagnosis capabilities.

Active Publication Date: 2012-10-17
BEIJING INST OF CONTROL ENG
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Problems solved by technology

If the angular rate measurement sensor fails to be detected and isolated in time, it will lead to serious accidents such as attitude loss and ene

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  • Optimization method for measuring point of measuring sensor for satellite angular rate based on correlation matrix
  • Optimization method for measuring point of measuring sensor for satellite angular rate based on correlation matrix
  • Optimization method for measuring point of measuring sensor for satellite angular rate based on correlation matrix

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Embodiment Construction

[0037] Satellite angular rate measurement sensors include mechanical gyroscopes, liquid floating gyroscopes, double-floating gyroscopes, triple-floating gyroscopes, fiber optic gyroscopes, flexible gyroscopes, micromechanical gyroscopes, hemispherical resonant gyroscopes and electrostatic gyroscopes. In view of the advantages of high measurement accuracy and long service life of liquid floating gyroscopes and secondary floating gyroscopes, these two types of gyroscopes are mainly used as angular velocity measurement sensors in satellites at present. In order to meet the increasingly longer service life requirements of satellites, three-floating gyroscopes and fiber optic gyroscopes are gradually introduced into satellite designs and become the core products of the next-generation angular velocity measurement sensors.

[0038]The angular rate measurement sensor can be divided into two parts: the meter head and the control circuit. The meter head is used to sense the angular velo...

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Abstract

The invention relates to an optimization method for a measuring point of a measuring sensor for a satellite angular rate based on a correlation matrix. The optimization method comprises the following steps: (1) dividing function modules for the measuring sensor for the angular rate, establishing a signal flow graph for each of the function modules, and marking all the measuring points in the signal flow graph; (2) performing FMEA (Failure Mode and Effects Analysis) on the measuring sensor for the angular rate, confirming failure mode and failure effects of the measuring sensor for the angular rate, and adding the failure mode to the signal flow graph according to the failure effects; (3) establishing a fault-measuring point correlation matrix; (4) performing assignment on the correlation matrix according to the signal flow graph; and (5) performing fault testability analysis on the measuring sensor for the angular rate according to the fault-measuring point correlation matrix D established in the step (4). According to the optimization method provided by the invention, the defects of the prior art are overcome, the faults can be detected and separated as much as possible under the condition of meeting resource restraint, and a basis is supplied for diagnostic design of a satellite control system.

Description

technical field [0001] The invention belongs to the field of aerospace, and relates to a correlation matrix-based method for optimizing measuring points of a satellite angular velocity measuring sensor. Background technique [0002] With the development of science and technology, satellites have played an irreplaceable role in various fields such as national defense, military, communications, and meteorology. In order to ensure the safety and operation quality of satellites in orbit, a series of safeguard measures have been taken in the process of design, production and testing, so as to improve the inherent reliability of products and reduce the probability of failure in orbit. However, since the satellite is a large and complex system involving multi-disciplinary and multi-field technologies, and it has been flying for a long time in a harsh and complex space environment, coupled with the limitations of components, raw materials and processing levels, it is inevitable that...

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Application Information

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IPC IPC(8): G01P21/02
Inventor 刘成瑞蔡彪王南华邢琰高伟
Owner BEIJING INST OF CONTROL ENG
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