Nonlinear active-disturbance-rejection control method for vertically rising and falling repeatedly-used carrier

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

Active Publication Date: 2018-10-12
黑龙江省工业技术研究院
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of fast and stable tracking control of the attitude of the vertical take-off and landing reusable vehicle under the condition of complex external uncertainty interfer

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  • Nonlinear active-disturbance-rejection control method for vertically rising and falling repeatedly-used carrier
  • Nonlinear active-disturbance-rejection control method for vertically rising and falling repeatedly-used carrier
  • Nonlinear active-disturbance-rejection control method for vertically rising and falling repeatedly-used carrier

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[0064] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0065] Combine figure 1 with figure 2 , The present invention proposes a non-linear active disturbance rejection control method for vertical take-off and landing reusable vehicles, including the following steps:

[0066] Step 1: In view of the force analysis results of the vertical take-off and landing repeated use of the vehicle's attitude adjustment section, establish its attitude dynamics model and attitude kinematics model, and define the attitud...

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Abstract

The invention provides a nonlinear active-disturbance-rejection control method for a vertically rising and falling repeatedly-used carrier. The method comprises the following steps of step 1,attitudecontrol model establishment; step 2,TD tracking differentiator design; step 3,nonlinear expansion state observer design; step 4,nonlinear active-disturbance-rejection controller design; and step 5,nonlinear feedback control law design. The nonlinear active-disturbance-rejection control method for the vertically rising and falling repeatedly-used carrier is provided for the defects of longer attitude response time,weak anti-noise ability,lower attitude control precision and the like of an existing active-disturbance-rejection controller,combines a nonlinear TD tracking differentiator with a finite time convergence characteristic,an expansion state observer with fixed time convergence and a nonlinear feedback control law to form a novel nonlinear active-disturbance-rejection controller,thereby improving the complex external interference rejection ability of a system,and also improving the attitude control precision and response speed.

Description

technical field [0001] The invention belongs to the technical field of aircraft control, and in particular relates to a nonlinear active disturbance rejection control method for a vertical take-off and landing reusable carrier. Background technique [0002] After the vertical take-off and landing reusable vehicle finishes the first and second stages of separation after the active flight, the second stage will transport the payload until it enters orbit, and the first stage will quickly perform a large attitude adjustment after separation (the adjustment range of the pitch angle can be from Change from 30° to 180°), and then decelerate the ignition of the main engine for the subsequent flight repair stage to correct the voyage to ensure a good ignition angle. In the attitude-adjusting flight segment, due to the low flight altitude (60-160km), there are many factors such as atmospheric interference, high-altitude wind interference, large sloshing effect of liquid propellant ca...

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Application Information

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IPC IPC(8): G05D1/08G05D1/10
CPCG05D1/0808G05D1/101
Inventor 韦常柱张亮崔乃刚浦甲伦关英姿
Owner 黑龙江省工业技术研究院
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