Design of longitudinal predictive re-entry guidance law based on variable universe fuzzy-PI composite control  

作　　者：Yin WANG 1 , Yuping LU 2 1.College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing Jiangsu 210016, China 2.College of Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing Jiangsu 210016, China 

出　　处：《控制理论与应用（英文版）》2012年第2期264-267,共4页

摘　　要：This paper studies the longitudinal predictive re-entry guidance law based on the variable universe fuzzy- PI composite control to overcome the inaccuracy of the reference trajectory re-entry guidance for reentry vehicles. The variable universe fuzzy controller is used to obtain a satisfactory dynamic response when the downrange error is large, and the PI controller is utilized to eliminate the steady state error when the downrange error is small. Simulation results show that the proposed guidance law is very robust to the initial errors and can achieve better accuracy, and is also able to handle the effect of the stochastic errors in re-entry processes.This paper studies the longitudinal predictive re-entry guidance law based on the variable universe fuzzy- PI composite control to overcome the inaccuracy of the reference trajectory re-entry guidance for reentry vehicles. The variable universe fuzzy controller is used to obtain a satisfactory dynamic response when the downrange error is large, and the PI controller is utilized to eliminate the steady state error when the downrange error is small. Simulation results show that the proposed guidance law is very robust to the initial errors and can achieve better accuracy, and is also able to handle the effect of the stochastic errors in re-entry processes.

关 键 词：Re-entry guidance Variable universe Fuzzy control PI control 

分 类 号：V249[航空宇航科学与技术—飞行器设计]