Control Design of Nonlinear Spacecraft System Based on Feedback Linearization Approach

Chung-Cheng Chen,Yen-Ting Chen

doi:10.1109/access.2020.3003167

Abstract

In this paper, based on simple quadratic matrix algebra, feedback linearization and neural network methods, the kinematics and almost perturbation decoupling and tracking performances of nonlinear spacecraft attitude control represented by improved Rodriguez parameters are studied. A nonlinear robust attitude controller is proposed to ensure the global stability and the almost disturbance decoupling performance without any learning or adaptation rules used in neural network approach and without having to solve the complex Hamilton-Jacobi equation of H-infinity control approach. This study presents an example that cannot be solved by the first paper on the problem of almost disturbance decoupling, to illustrate the point that this method can easily solve the tracking and almost disturbance decoupling performance. In addition, we propose a novel algorithm and two theorems that design a controller with almost disturbance decoupling and tracking performances. On the basis of meeting the standards we proposed, we successfully carried out some simulations on the spacecraft system to solve the effects of external disturbance torques.

Highlights

The issue of three-axis attitude control of spacecraft has attracted widespread attention and has achieved many key results [2], [10], [31], and [33]
Many studies in the field of three-axis attitude control of spacecraft use the quaternion into the mathematical kinematical model of the spacecraft as the attitude parameter
We represent the kinematical model with modified Rodriguez parameters to broaden the effective range of attitude

Summary

INTRODUCTION

The issue of three-axis attitude control of spacecraft has attracted widespread attention and has achieved many key results [2], [10], [31], and [33]. We use the quadratic matrix algebra and feedback linearization method in the neural network structure [5] and [28] to design three-axis attitude control of spacecraft. Chen: Control Design of Nonlinear Spacecraft System Based on Feedback Linearization Approach perturbation on the output to precise adjustment. This issue has aroused widespread concern, and many important relevant studies have been conducted [20], [23], and [29]. (iii) A nonlinear robust attitude controller is proposed to guarantee the global stability and the almost disturbance decoupling performance without solving the complex Hamilton-Jacobi equation of H-infinity control approach.

CONTROLLER DESIGN OF THE SPACECRAFT SYSTEM

SIMULATION

COMPARATIVE EXAMPLE TO EXISTING APPROACH

CONCLUSION