Individual feedforward-feedback control of a flexible rotor blade: a comparison of approaches

Leslie P. Fowler; Daniel G. Cole; Harry H. Robertshaw; Victor Giurgiutiu

doi:10.1117/12.208861

5 May 1995 Individual feedforward-feedback control of a flexible rotor blade: a comparison of approaches

Leslie P. Fowler, Daniel G. Cole, Harry H. Robertshaw, Victor Giurgiutiu

Proceedings Volume 2442, Smart Structures and Materials 1995: Mathematics and Control in Smart Structures; (1995) https://doi.org/10.1117/12.208861
Event: Smart Structures and Materials '95, 1995, San Diego, CA, United States

Abstract

Various control methods of rotor blade vibration reduction based on individual blade control are presented and compared. The benchmark model used is based on a four-bladed helicopter at hover conditions. In this paper, three control strategies are investigated: LQR method of feedback control, feedforward control, and hybrid control (a combination of feedback and feedforward control). It was found that the LQR method provided substantial improvements in the system and very low gains. Feedforward control was found to be somewhat less effective and the hybrid control method, which combines both feedforward and LQR feedback methods, was proven to be the most effective method.

Citation Download Citation

Leslie P. Fowler, Daniel G. Cole, Harry H. Robertshaw, and Victor Giurgiutiu "Individual feedforward-feedback control of a flexible rotor blade: a comparison of approaches", Proc. SPIE 2442, Smart Structures and Materials 1995: Mathematics and Control in Smart Structures, (5 May 1995); https://doi.org/10.1117/12.208861

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