Reliability Evaluation Method of Small Sample Micro-inertial Sensor Based on Multiple Degradation Mechanisms

A micro-inertial sensor, degradation mechanism technology, applied in the direction of instruments, electrical digital data processing, special data processing applications, etc. effect

Active Publication Date: 2017-12-08
ZHONGBEI UNIV
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Problems solved by technology

[0003] In order to solve the problems that the existing micro-inertial sensor reliability assessment method cannot perform reliability assessment under limited time and cost constraints, and the assessment accuracy and credibility are low, the present invention provides a small sample based on multiple degradation mechanisms Reliability Evaluation Method of Micro-inertial Sensor

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  • Reliability Evaluation Method of Small Sample Micro-inertial Sensor Based on Multiple Degradation Mechanisms
  • Reliability Evaluation Method of Small Sample Micro-inertial Sensor Based on Multiple Degradation Mechanisms
  • Reliability Evaluation Method of Small Sample Micro-inertial Sensor Based on Multiple Degradation Mechanisms

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Embodiment Construction

[0019] Reliability evaluation method of small sample micro-inertial sensor based on multiple degradation mechanisms. The method is implemented by adopting the following steps:

[0020] 1) Select the sensitive characteristic parameters that can characterize the performance degradation of the micro inertial sensor under environmental stress, and use the quantitative fault tree analysis method to determine the sensitive environmental stress of the micro inertial sensor;

[0021] 2) Design performance degradation test profile; the specific design steps are:

[0022] 2.1) Use the sensitive environmental stress of the micro inertial sensor as the environmental stress of the performance degradation test;

[0023] 2.2) Determine the upper and lower limits of the environmental stress for the performance degradation test; the specific determination method is: the upper limit of the environmental stress is not lower than the maximum stress value that the micro inertial sensor may encounter, and t...

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Abstract

The invention relates to a method for evaluating the reliability of a micro-inertial sensor, in particular to a method for evaluating the reliability of a small-sample micro-inertial sensor based on multiple degradation mechanisms. The invention solves the problems that the existing micro-inertial sensor reliability assessment method cannot perform reliability assessment under limited time and cost constraints, and the assessment accuracy and reliability are low. A small-sample micro-inertial sensor reliability evaluation method based on multiple degradation mechanisms, which is implemented by the following steps: 1) Select sensitive characteristic parameters that can characterize the performance degradation of micro-inertial sensors under environmental stress; 2) Design performance degradation tests 3) Perform performance degradation tests on p micro-inertial sensors of the same batch; 4) Set failure thresholds for q sensitive characteristic parameters of p micro-inertial sensors; 5) Comprehensively evaluate p micro-inertial sensors in each working condition time reliability. The invention is suitable for micro inertial sensors.

Description

Technical field [0001] The invention relates to a reliability evaluation method of a micro inertial sensor, in particular to a reliability evaluation method of a small sample micro inertial sensor based on multiple degradation mechanisms. Background technique [0002] Micro-inertial sensors have important application value in aviation, aerospace, national defense and other fields. In the development process of micro inertial sensors, the reliability evaluation of micro inertial sensors is a very important link. Under the existing technical conditions, the reliability evaluation of the micro inertial sensor is mainly achieved through the following two methods: The first method is the traditional accelerated life test method. The principle of this method is to evaluate the reliability based on the failure life information of the micro inertial sensor. The main problems are as follows: As the accuracy, stability, reliability, and life level of the micro inertial sensor are getting ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
Inventor 秦丽于丽霞鲍爱达马喜宏刘俊李杰王孟美
Owner ZHONGBEI UNIV
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