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.
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.
It is shown through performance simulations that the proposed control scheme is effective in terms of command following, stability and disturbance attenuation.
The presented robust control approach provides a theoretical method to facilitate designing a stable servo control loop for a yaw – pitch gimballed seeker.
This paper supplies an effective way of addressing stabilization problem induced from actuator saturation and system uncertainties.
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).
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
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