Heavy carrier rocket attitude control method with customizable control performance indexes

Abstract

The invention provides a heavy carrier rocket attitude control method with customizable control performance indexes. On the basis of an attitude dynamics model of an aircraft, a reference model with an expected overshoot amount and rise time is designed; a is obtained and thus a model tracking error dynamics model is obtained and a model tracking error constraint function is designed, so that convergence from an initial state to an expected steady-state error within specified time is realized based on a certain change rule. External disturbance is estimated by using an adaptive disturbance estimation law based on the steps and an attitude controller is compensated; and with the controller, the convergence characteristic of fixed time can be ensured and the high control precision and robustness are realized. According to the provided method, a controller conforming to control performance indexes like an overshoot, rise time, a steady-state error and transition process time specified bya user can be designed according to requirements; and the consistent control performance of the aircraft in the whole flight process can be realized. The method has wide application space and great application value.

Description

Technical field [0001] The invention belongs to the technical field of aircraft control, and particularly relates to a method for controlling the attitude of a heavy launch vehicle with customizable control performance indicators. Background technique [0002] With the advancement of science and technology and the increasing demand for space exploration missions, mankind continues to develop in the direction of deep space such as new extraterrestrial galaxies, asteroids and comets. It is necessary to develop large communication satellites, rendezvous and docking space stations, and manned / unmanned exploration. Advanced spacecraft such as rockets, therefore, the requirements for the carrying capacity of rockets are constantly increasing. As an effective vehicle, the heavy-duty launch vehicle is the basis for a country's large-scale space exploration. It can effectively meet the mission requirements of deep space exploration, asteroid exploration, Mars exploration, and manned deep ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the heavy-duty launch vehicle has consistent control performance and the control performance index can be customized in advance during the whole flight process of the active segment, and proposes a heavy-duty launch vehicle attitude control method with customizable control performance index

Images