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Adaptive fault tolerance control method for vertical take-off and landing reusable launch vehicle

A vertical take-off and landing, fault-tolerant control technology, applied in the field of aircraft control

Active Publication Date: 2019-01-11
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of high-precision autonomous landing control under the condition of engine servo mechanism failure when the vertical take-off and landing reusable carrier is flying in the landing section, and proposes an adaptive fault-tolerant control of the vertical take-off and landing reusable carrier method

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  • Adaptive fault tolerance control method for vertical take-off and landing reusable launch vehicle

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Embodiment Construction

[0084] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0085] combine figure 1 , the present invention proposes an adaptive fault-tolerant control method for a vertical take-off and landing reusable carrier, comprising the following steps:

[0086] Step 1: Design the multi-constraint guidance law for the landing section of the vertical take-off and landing reusable vehicle, and directly obtain the attitude guidance commands of the pitch angle, yaw angle and roll angle after conversion;

[0087] Step 2...

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Abstract

The invention provides an adaptive fault tolerance control method for a vertical take-off and landing reusable launch vehicle. The method comprises the steps of: Step 1: obtaining a guidance command;Step 2: establishing a landing section fault tolerance control model; Step 3: designing a fixed time convergence and expansion state observer; step 4: designing a non-singular fast terminal sliding mode surface; and Step 5: designing an adaptive fault tolerance controller. According to the adaptive fault tolerance control method, this design pattern not only effectively improves the rejection capability of the system to the complex external interference and the adaptive fault tolerance performance under various engine failure modes, but also guarantees the rapid and accurate tracking of the attitude guidance command.

Description

technical field [0001] The invention belongs to the technical field of aircraft control, in particular to an adaptive fault-tolerant control method of a vertical take-off and landing reusable carrier. Background technique [0002] The vertical take-off and landing reusable vehicle needs to go through the active flight stage, the attitude adjustment flight stage, the flight repair stage, the high-altitude unpowered re-entry stage, the high-altitude ignition deceleration flight stage, and the grid rudder control in the atmosphere from the launch site to the final fixed-point soft landing. There are seven flight processes including flight segment and vertical landing segment. Among them, the vertical landing segment is the last flight segment, which mainly completes the precise control of position, attitude and speed, so that the position control accuracy is within 10m, the landing attitude accuracy is within 2°, and the speed control is within 2m / s. However, in the vertical l...

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Application Information

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IPC IPC(8): G05D1/08G05D1/10
CPCG05D1/0808G05D1/101
Inventor 崔乃刚韦常柱张亮浦甲伦关英姿
Owner HARBIN INST OF TECH
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