Title :
A robust controller for an electro-mechanical fin actuator
Author :
Yoo, Chung-Hee ; Lee, Young-Cheol ; Lee, Sang-Yeal
Author_Institution :
Agency for Defense Dev., Daejeon, South Korea
Abstract :
The objective of this paper is to realize a robust controller for an electro-mechanical fin servo system of a missile. We design the robust controller using an H∞ optimization method and a disturbance observer, in order to improve the overall performance of the fin servo system. The H∞ controller is designed using the mixed sensitivity H∞ control method, based on the 2-Riccati state-space approach of Glover and Doyle. The newly proposed disturbance observer is applied to the fin servo system and it consists of three elements: a time delay estimation algorithm part, an anti-filtering compensator (AFC) part and a low pass filter (LPF) part. The effectiveness of this control scheme is verified through simulations.
Keywords :
H∞ control; H∞ optimisation; Riccati equations; actuators; control system synthesis; delays; low-pass filters; observers; robust control; 2-Riccati state-space approach; H∞ optimization method; antifiltering compensator; disturbance observer; electro-mechanical fin actuator; low pass filter; mixed sensitivity H∞ controller; robust controller; time delay estimation algorithm; Actuators; Automatic frequency control; Control systems; Delay effects; Delay estimation; Missiles; Observers; Optimization methods; Robust control; Servomechanisms;
Conference_Titel :
Control Applications, 2004. Proceedings of the 2004 IEEE International Conference on
Print_ISBN :
0-7803-8633-7
DOI :
10.1109/CCA.2004.1387579
