A Calculation Method for Determining Aircraft Overload State

Abstract

The invention discloses a calculating method for determining the overload state of an airplane. The calculating method comprises the following steps: step 1, defining an integral value variable Sum and an overload threshold; and step 2, accurately calculating the overload state of an airplane, in which an accelerometer is used to measure the accelerated speed when the airplane is suffered to instantaneous impact, a microprocessor is used to get rid of outliers from the accelerated speed value and to perform filtering processing of the accelerated speed value, whether the airplane is overloaded is determined according to the integral value variable Sum in a certain time, the integral value variable Sum is compared with the pre-set overload threshold, when the integral value variable Sum is larger than the overload threshold, it is determined that the airplane is overloaded, otherwise, it is determined that the airplane isn't overloaded. Through calculation of the variable quantity per unit time of the accelerated speed when an airplane is suffered from instantaneous impact, whether the airplane is overloaded is determined, and misjudgment due to factors, such as shock, is prevented. The calculating method is simple and reliable, is precise and accurate, allows repetitive integral operation to be prevented, and is low in algorithm complexity.

Description

technical field [0001] The invention belongs to the technical field of aircraft protection systems, and in particular relates to a calculation method for judging the overload state of an aircraft. Background technique [0002] The black box in the plane is used to record the operating parameters of the plane. Once the plane crashes, the cause of the plane crash can be analyzed by reading the data from the black box. The black box is equipped with an emergency positioning system, which sends a positioning signal to the outside, and the location of the black box can be quickly located through the receiver, so as to find the black box. [0003] In the event of a plane malfunction or crash, the black box may be damaged and unable to read data or send positioning signals. In order to protect the black box from damage, the black box can be ejected from the aircraft at the moment of the crash by judging the overload state of the aircraft to protect the black box. [0004] The cor...

AI Technical Summary

Problems solved by technology

The method of judging whether the aircraft is overloaded by the stress sensor can only detect local mechanical deformation, and cannot accurately sense the acceleration value of the aircraft, and the judgment results have certain limitations.

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