A fault-tolerant control method for orbit control during off-orbit braking of reversible aircraft

A fault-tolerant control and off-track braking technology, applied in the field of aircraft control, can solve problems such as misjudgment of the working state of the main engine of the accelerometer, engine failure, etc., and achieve the effect of improving work reliability, strong reliability, and simple calculation methods

Active Publication Date: 2020-08-25
BEIJING INST OF ELECTRONICS SYST ENG
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Problems solved by technology

This method is relatively simple, but in some cases, the orbital control engine needs to be pulsed to start, and sometimes there may be a small thrust, but it does not mean that the engine is faulty. In addition, the noise or fault of the accelerometer may also cause damage to the engine. Misjudgment of the working status of the main engine, there is a certain risk

Method used

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  • A fault-tolerant control method for orbit control during off-orbit braking of reversible aircraft
  • A fault-tolerant control method for orbit control during off-orbit braking of reversible aircraft
  • A fault-tolerant control method for orbit control during off-orbit braking of reversible aircraft

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Embodiment Construction

[0040] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments and accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.

[0041] like figure 1 As shown, a kind of orbit control fault-tolerant control method during the off-track braking period of the returning aircraft disclosed by the present invention includes:

[0042] S1: During off-track braking, the command speed is calculated in real time.

[0043] The command speed is

[0044]

[0045] in,

[0046]

[0047]

[0048]

[0049]

[0050] in, is the current position vector of the aircraft in the J2000 coordinate system, is the position vector of the reentry point in th...

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Abstract

The invention discloses a track-control fault-tolerant control method for a reentry type aircraft during the off-track braking process. The method comprises the following steps of S1, during the off-track braking process, calculating the instruction speed in real time; S2, according to the instruction speed and the navigation speed, calculating the required speed of the aircraft; S3, according to the required change of the speed, judging whether a main engine has a fault or not; S4, if the main engine is judged to have a fault, conducting the emergency treatment. According to the invention, a track-control fault can be judged through continuously increasing the required speed. The method is feasible in algorithm and high in reliability and has obvious advantages.

Description

technical field [0001] The invention relates to the field of aircraft control. More specifically, it relates to an orbit control fault-tolerant control method during off-orbit braking of a return aircraft. Background technique [0002] The de-orbit braking of the space vehicle is realized by providing braking force through the orbit control engine, performing speed correction, and reducing the speed of the vehicle. The reliability of the orbit-changing engine directly affects the derailment braking effect. At present, most reversible aircraft at home and abroad do not have the orbit control redundancy function in the engine layout, and only provide a main engine at the tail of the aircraft. This is based on the high reliability of the orbit-changing engine and the consideration of reducing system complexity. However, for returnable aircraft whose power system is developed and has low reliability, in order to improve the mission reliability of the system, in addition to the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 石凯宇陈勤王洪涛李海滨闫捷
Owner BEIJING INST OF ELECTRONICS SYST ENG
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