Helicopter H control design with robust flying quality

Chi Chung Luo, Ru Feng Liu, Ciann Dong Yang, Yeong Hwa Chang

Research output: Contribution to journalArticlepeer-review

61 Citations (Scopus)


The purpose of this paper is to design helicopter H flight control system to improve its stability, maneuverability, and agility. Firstly, the linear mathematical model of a helicopter is established from the nonlinear six degree-of-freedom dynamic equations. Then, linear H control theory is applied to the linearized model to design the H controller, which, in turn, is integrated in the nonlinear model of a helicopter to simulate nonlinear dynamic response, and to evaluate flying quality. Two helicopter flying quality indices, quickness index and phase delay margin, are adopted to test the robustness of H controller, and the results show that while the forward velocity of helicopter changes, the H controller can maintain the specifications in level-1 standard.

Original languageEnglish
Pages (from-to)159-169
Number of pages11
JournalAerospace Science and Technology
Issue number2
Publication statusPublished - 2003 Mar 1

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering


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