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

Volume

2

fYear

2004

fDate

2-4 Sept. 2004

Firstpage

1448

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Applications, 2004. Proceedings of the 2004 IEEE International Conference on

Print_ISBN

0-7803-8633-7

Type

conf

DOI

10.1109/CCA.2004.1387579

Filename

1387579