Measurement precision evaluation method for liquid level sensor failure reconfiguration system

Abstract

The invention relates to the technical field of liquid level measurement, and particularly provides a measurement precision evaluation method for a liquid level sensor failure reconfiguration system. When a system reconfiguration model is built or a system health management rule is constructed in a measurement system composed of a plurality of liquid level sensor arrays, the precision grade of the measurement system under the fault mode of the liquid level sensors needs to be analyzed quantitatively, and quantitative analysis is very tedious because the number of combined fault modes and change parameters is large; in order to improve the work efficiency, an engineering problem is abstracted into a mathematical model, mathematical relationships among the geometric positions of the sensors, dip angle pitching of an oil surface, rolling direction components and other parameters are deduced, the maximum inclination angle of the critical oil surface is solved, measurable and non-measurable volumes in a storage box are segmented, measurement errors of a reconfigured system is quantitatively evaluated, the volume, not capable of being sensed by the effective sensors, of the storage box on one side of the critical oil surface is calculated, the percentage of the volume accounting in the total volume of the storage box is calculated, and the percentage is the highest precision which can be achieved after the system is degraded in the fault mode.

Description

technical field [0001] The invention relates to the technical field of liquid level measurement, in particular to a measurement accuracy evaluation method for a liquid level sensor failure reconstruction system. Background technique [0002] During the operation of aviation, spacecraft, ships, and vehicles, in order to reduce the additional error caused by the inertial force of the oil, a measurement system architecture with multiple sensor arrays is generally used. In the design process of the oil measurement system, establishing a system reconfiguration model or constructing a system health management (PHM) rule is one of the important contents of the system function design. For this reason, it is essential to quantitatively analyze the accuracy level of the measurement system when the liquid level sensor fails. However, there are many failure modes and variable parameters in the system combination, and quantitative analysis is very cumbersome. In order to improve work eff...

AI Technical Summary

Problems solved by technology

In the design process of the oil measurement system, establishing a system reconfiguration model or constructing a system health management (PHM) rule is one of the important contents of the system function design. For this reason, it is essential to quantitatively analyze the accuracy level of the measurement system when the liquid level sensor fails. However, there are many combined failure modes and changing parameters in the system, and the quantitative analysis is very cumbersome. In order to improve work efficiency, computer programs are used to enumerate and traverse, which has the problems of large amount of calculation results, difficult analysis and processing, and poor pertinence and flexibility. It is difficult to truly comprehensively and effectively improve work efficiency, and a new rapid evaluation method is urgently needed

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