Aircraft fuel quantity sensor layout method suitable for large overload and anti-flight working conditions

Abstract

The invention discloses an aircraft fuel quantity sensor layout method suitable for large overload and anti-flight working conditions, and aims to solve the problems that an existing layout optimization method loses an optimal solution and cannot meet aircraft fuel quantity measurement sensor layout under the large overload and anti-flight working conditions. In order to achieve the purpose, the method comprises the steps of dividing and dispersing feasible installation areas at the bottom and the top of the oil tank; generating a multi-angle sensor mounting line; carrying out pre-filtering treatment on the installation line; discretizing and combining the attitude angles of the oil surface; obtaining a mounting line set group meeting the unmeasurable oil quantity constraint according to the oil surface posture; dividing and combining the set groups; and selecting an optimal sensor layout scheme from the divided set groups according to continuity requirements and attitude error constraints. The method has the advantages of being high in universality, good in optimization performance and capable of automatically optimizing the layout scheme of the inclination sensor, and the work requirement for layout optimization of the oil mass measurement sensor under the large overload and anti-flying working conditions can be met.

Description

technical field [0001] The invention belongs to the field of measuring the fuel quantity of an aircraft fuel tank, and in particular relates to an aircraft fuel quantity sensor layout method suitable for large overload and anti-flight working conditions. Background technique [0002] The fuel tank measurement system is an important part of the aircraft fuel system, and it is the basis for the pilot to accurately estimate the fuel volume, and it also undertakes the alarm function of the aircraft when the fuel tank is full or low. At present, capacitive sensors are widely used at home and abroad to measure the amount of aircraft oil. According to the different oil immersion heights, the sensors output different capacitance values ​​to the on-board computer. The on-board computer calculates the remaining oil by calculating the attitude angle and height of the oil plane. volume of. The layout of the sensor needs to fully consider the limitation of the number of sensors, the con...

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Problems solved by technology

In terms of sensor layout in China, manual layout has been adopted for a long time, and the layout is carried out according to the geometric size of the fuel tank model combined with theoretical analysis, which relies heavily on the experience of designers and requires a lot of calculations

[0003] In recent years, some researchers have proposed some automatic sensor layout methods, but their disadvantages are: when generating the installation line, it can only be generated at a fixed angle or according to the direction specified by the discrete points at the bottom of the fuel tank, and it is impossible to automatically generate various tilt angles. Installation line; in the calculation process, for the multiple sets obtained by the constraint of unmeasurable oil volume, the method of threshold limit is used to merge in advance. The non-intersection part leads to the fact that the optimal solution is not considered in the deleted part during the merging process, and the optimal solution is lost with a high probability, which further makes the performance of the generated sensor layout solution poor or cannot find a sensor layout that meets the requirements scheme; and throughout the optimization process, the continuity judgment method cannot satisfy the constraint principle of the tilt sensor

[0005] The optimization results obtained by only considering the vertical arrangement or a single inclination angle arrangement cannot meet the performance of oil quantity measurement. It is necessary to design a layout optimization method that considers various inclination angle sensors during the sensor layout optimization process, and proposes to avoid losing the optimal solution design

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