Improvement of helicopter handling qualities usingH∞-optimisation
作者:
A.Yue,
I.Postlethwaite,
期刊:
IEE Proceedings D (Control Theory and Applications)
(IET Available online 1990)
卷期:
Volume 137,
issue 3
页码: 115-129
年代: 1990
DOI:10.1049/ip-d.1990.0016
出版商: IEE
数据来源: IET
摘要:
In the paper, we present the results of a study into the use ofH∞-optimisation for the design of robust feedback control laws for improving the handling qualities of high-performance helicopters. A low-speed controller was designed to give accurate control of pitch and roll attitude, yaw rate and heave velocity for a typical combat helicopter. The design was based on a linearised model obtained from a six-degree-of-freedom nonlinear model of a helicopter provided by the Royal Aerospace Establishment (RAE), Bedford, UK. Robustness was a major issue because rotor dynamics were not included in the design model. Numerical compliance of the design with handling qualities requirements was assessed by testing simulated responses against specifications from a proposed airworthiness design standard. Robust stability was assessed from singular-value plots. In addition, the qualitative features of the design were assessed in a piloted flight simulation trial held at RAE, Bedford.
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