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Robust control of a yaw-pitch gimballed seeker

S.T. Zhan (Shanghai JiaoTong University, State Key Lab of Mechanical System and Vibration, Shanghai, P.R.China)
W.X, Yan (Shanghai JiaoTong University, State Key Lab of Mechanical System and Vibration, Shanghai, P.R.China)
Z. Fu (hanghai JiaoTong University, State Key Lab of Mechanical System and Vibration, Shanghai, P.R.China and State Key Lab of Robotics and System (HIT), Harbin, P.R.China)
Gen Pan (Shanghai JiaoTong University, State Key Lab of Mechanical System and Vibration, Shanghai, P.R.China)
Y.Z. Zhao (1Shanghai JiaoTong University, State Key Lab of Mechanical System and Vibration, Shanghai, P.R.China)

Aircraft Engineering and Aerospace Technology

ISSN: 0002-2667

Article publication date: 5 January 2015

Abstract

Purpose

This paper aims to present a robust design approach to realize disturbance attenuation for a yaw – pitch gimballed system subject to actuator saturation and disturbances.

Design/methodology/approach

To minimize the impacts of disturbances in the presence of saturation nonlinearity and acquire desired response performance, the control approach is of double closed-loop configuration. State feedback controllers are synthesized via convex optimization and used to stabilize the inner loops; robust controllers are synthesized via mixed H optimization and used to stabilize the outer loops.

Findings

It is shown through performance simulations that the proposed control scheme is effective in terms of command following, stability and disturbance attenuation.

Practical implications

The presented robust control approach provides a theoretical method to facilitate designing a stable servo control loop for a yaw – pitch gimballed seeker.

Originality/value

This paper supplies an effective way of addressing stabilization problem induced from actuator saturation and system uncertainties.

Keywords

Acknowledgements

This work was partially supported by the Research Fund of State Key Lab of MSV(Grant No. MSV-MS-2010-03), the State Key Laboratory of Robotics and System (HIT) (Grant No. SKLRS-2010-ZD-06), the Shanghai Aerospace Fund (Grant No. ZYJ-09052) and the National Natural Science Foundation of China (Grant No. 61075086, 61105101).

Citation

Zhan, S.T., Yan, W.X., Fu, Z., Pan, G. and Zhao, Y.Z. (2015), "Robust control of a yaw-pitch gimballed seeker", Aircraft Engineering and Aerospace Technology, Vol. 87 No. 1, pp. 83-91. https://doi.org/10.1108/AEAT-12-2012-0258

Publisher

:

Emerald Group Publishing Limited

Copyright © 2015, Emerald Group Publishing Limited