Method for controlling postures of aircraft converged at fixed time

An attitude control, fixed time technology, applied in the field of aircraft control

Inactive Publication Date: 2015-09-30
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF4 Cites 33 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of achieving fixed-time convergence when the initial valu

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for controlling postures of aircraft converged at fixed time
  • Method for controlling postures of aircraft converged at fixed time
  • Method for controlling postures of aircraft converged at fixed time

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0093] In order to better illustrate the purpose and advantages of the present invention, the technical solution will be further described in detail below in conjunction with the accompanying drawings and examples.

[0094] Step 1: Establish a dynamic model of the re-entry vehicle, and propose a limited-time attitude tracking task.

[0095] Based on the attitude control problem of an unpowered reentry vehicle, the attitude dynamics equation is as follows:

[0096] ω · x = - I zz ( I zz - I yy ) + I xz 2 I * ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for controlling postures of an aircraft converged at a fixed time, relates to an aircraft posture control method, and belongs to the technical field of aircraft control. The method comprises the following steps of (1) establishing a reentry aircraft dynamic model and offering a limited time posture tracking task; (2) performing feedback linearization treatment on a model established in the step (1); and (3) giving out a limited time control law, starting the state of a system from an optional initial value and consulting a trace on tracking within a set time. The method can be used for implementing system error fixed time convergence when part of initial value information is unknown. Moreover, the method has high robustness under the conditions that system parameters are uncertain and external interferences exist.

Description

technical field [0001] The invention relates to an aircraft attitude control method, in particular to an aircraft attitude control method with fixed time convergence, and belongs to the technical field of aircraft control. Background technique [0002] For the re-entry vehicle, the flight conditions (airspace, speed domain) change in a large range during the re-entry process, and the coupling between channels is serious, showing strong nonlinear dynamic characteristics. In addition, the existence of various uncertain external disturbances and the inability to accurately know the aerodynamic characteristics of the aircraft make its attitude control extremely complicated. The key problem to be solved in the design of the reentry vehicle control system is to suppress the influence of the above nonlinear, strong coupling and uncertainty on the system performance. [0003] At present, the non-linear control methods that are widely used include fuzzy control, optimal control, dyn...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G05D1/08G05B13/04
Inventor 盛永智任小欢刘向东
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap