Two-stage aircraft separation moment discrimination method based on axial overload

Abstract

The invention discloses a two-stage aircraft separation moment discrimination method based on axial overload. The two-stage aircraft separation moment discrimination method comprises the following steps: step 1, determining an axial overload as a basic variable of online real-time discrimination separation; step 2, calculating axial overload values of an aircraft before and after separation; step3, determining an axial overload safety threshold value during safety separation according to the result obtained in the step 2; step 4, performing mean filtering processing on a real-time overload signal; step 5, determining a size relationship between the axial overload and the safety separation threshold value at the safety separation moment; and step 6, recording a time point meeting the safeseparation condition in the step 5 as a main-stage starting control moment. According to the characteristic that axial overload obviously changes before and after two-stage separation of the aircraft,online real-time judgment of the two-stage separation moment is achieved.

Description

technical field [0001] The invention relates to the field of flight control of unmanned aerial vehicles, in particular to an online real-time discrimination method for two-stage safety separation of aircraft, through which the safety of two-stage separation can be ensured, the adaptability of the control system to uncertain factors in the separation process can be improved, and the two-stage separation can be improved. Front and rear flight control qualities. Background technique [0002] At present, the research of unmanned aerial vehicles tends to develop at high speed and long range. To improve the flight speed and range, a multi-stage booster scheme is often adopted. The booster stage accelerates the aircraft to a certain flight speed, and then throws it off through the inter-stage separation mechanism. Leave. The aerodynamic characteristics of the aircraft before and after the separation between the stages are quite different. The interaction force and aerodynamic inte...

AI Technical Summary

Problems solved by technology

The timing of the main stage control is directly related to the success or failure of the entire flight test. If the main stage is started in advance, it will easily cause the risk of collision between the front and rear stages; if the main stage is delayed, there will be a risk of uncontrolled flight in the main stage.

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