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Model reference self-adaptive sliding mode control method for vertical takeoff and landing reusable launch vehicle

An adaptive sliding mode, vertical take-off and landing technology, applied in the field of aircraft control, can solve problems such as inconsistent control performance indicators

Active Publication Date: 2018-09-14
黑龙江省工研院资产经营管理有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of inconsistent control performance indicators of the vertical take-off and landing reusable vehicle in the active segment flight caused by the existing control method, and to provide a high-precision, robust and self-adaptive model reference adaptive sliding Modular control method

Method used

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  • Model reference self-adaptive sliding mode control method for vertical takeoff and landing reusable launch vehicle
  • Model reference self-adaptive sliding mode control method for vertical takeoff and landing reusable launch vehicle
  • Model reference self-adaptive sliding mode control method for vertical takeoff and landing reusable launch vehicle

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Embodiment 1

[0083]A model reference adaptive sliding mode control method for a vertical take-off and landing reusable vehicle, the method comprising:

[0084] Step 1: Establish a perturbation guidance law for the active flight segment of the vertical take-off and landing reusable vehicle, and obtain attitude guidance commands for pitch angle, yaw angle and roll angle according to the perturbation guidance law;

[0085] Step 2: establishing a reference model with second-order oscillation link characteristics based on the attitude guidance command, and converting the reference model into a state space model;

[0086] Step 3: Use the small-disturbance linearization equation to carry out small-disturbance linearization on the dynamic model of the vertical take-off and landing reusable vehicle in the active section, and then obtain the three-channel independent decoupling linearization equation, and then convert it into the state space form consistent with the reference model , to obtain the s...

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Abstract

The invention relates to a model reference self-adaptive sliding mode control method for a vertical takeoff and landing reusable launch vehicle, and belongs to the technical field of aircraft control.A self-adaptive sliding mode reaching law with fixed convergence characteristics and a second-order fixed-time convergence extension state observer are introduced into the design of a model referenceself-adaptive sliding mode controller, the capability of a system for suppressing complex external interference is improved accordingly, and meanwhile the precision and tracking speed of model tracking are increased.

Description

technical field [0001] The invention relates to a model reference self-adaptive sliding mode control method for vertical take-off and landing reusable vehicles, belonging to the technical field of aircraft control. Background technique [0002] Since SpaceX, an American commercial aerospace company, successfully realized its first-class land landing or sea landing recovery test, the vertical take-off and landing reusable vehicle has gradually been adopted by domestic and foreign countries because of its advantages of repeated use, low cost, and advanced technology. Widely concerned by various research institutions. During the flight of the active section of the vertical take-off and landing reusable vehicle, due to factors such as elastic vibration, liquid sloshing, engine vibration, external complex flight environment, and large uncertainty of rocket mass parameters, the design of the attitude control system of the active section has problems. The process is complicated, t...

Claims

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Application Information

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IPC IPC(8): G05B13/04G05D1/08
CPCG05B13/042G05D1/0825
Inventor 韦常柱崔乃刚浦甲伦关英姿张亮
Owner 黑龙江省工研院资产经营管理有限公司
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