Satellite Simulator Control System Design Using SDRE Method

作     者：Luiz Carlos Gadelha DeSouza Rodrigo Guidoni Gonzales 

作者机构：National Institute for Space Researcher-INPE S J dos Campos-SP 1222 7-010 Brasil Brasilian Aeronautical Company-Embraer S J dos Campos-SP 12227-901 Brasil 

出 版 物：《Journal of Mechanics Engineering and Automation》 (机械工程与自动化（英文版）)

年 卷 期：2011年第1卷第1期

页      面：32-37页

学科分类：08[工学] 080203[工学-机械设计及理论] 081105[工学-导航、制导与控制] 0802[工学-机械工程] 0811[工学-控制科学与工程] 

主　　题：Satellite simulator state-dependent Riccati equation (SDRE) method nonlinear dynamics. 

摘      要：This paper presents the application of the State-Dependent Riccati Equation （SDRE） method in conjunction with Kalman filter technique to design a satellite simulator control system. The performance and robustness of the SDRE controller is compared with the Linear Quadratic Regulator （LQR） controller. The Kalman filter technique is incorporated to the SDRE method to address the presence of noise in the process, measurements and incomplete state estimation. The effects of the plant non-linearities and noises （uncertainties） are considered to investigated the controller performance and robustness designed by the SDRE plus Kalman filter. A general 3-D simulator Simulink model is developed to design the SDRE controller using the states estimated by the Kalman filter. Simulations have demonstrated the validity of the proposed approach to deal with nonlinear system. The SDRE controller has presented good stability, great performance and robustness at the same time that it keeps the simplicity of having constant gain which is very important as for satellite onboard computer implementation.