Online Dynamic Trim and Control Limit Estimation

Date

2012-9

Author

Yavrucuk, İlkay

Metadata

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The online estimation of a maneuvering steady-state condition of an aircraft, called the dynamic trim, is used to estimate the allowable control travel during flight, a key information in pilot cueing for envelope limit protection. In this paper a new methodology is presented where adaptive models are used to estimate online local dynamic trim conditions, while requiring very limited a priori vehicle information. Adaptive neural networks are employed to enable online learning. The models are used to estimate future aircraft responses and artificial margins on controls that would keep the aircraft response within its flight envelope limits. A linear helicopter model and the XV-15 tiltrotor model are used to demonstrate the method in simulation.

Subject Keywords

Output-feedback control, Tilt-rotor aircraft, Nonlinear-systems, Neural networks, Flight control, Avoidance

URI

https://hdl.handle.net/11511/28286

Journal

Journal of Guidance, Control, and Dynamics

DOI

https://doi.org/10.2514/1.53116

Collections

Department of Aerospace Engineering, Article

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Citation Formats

İ. Yavrucuk, “Online Dynamic Trim and Control Limit Estimation,” Journal of Guidance, Control, and Dynamics, pp. 1647–1656, 2012, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/28286.