Study on Dual-Loop Controller of Helicopter Based on the Robust H-Infinite Loop Shaping Method

Abstract:

Helicopter is a typical MIMO system including the properties of non-stability, strong coupling, uncertainty. Firstly, a robust internal loop ACAH controller is designed and analyzed to ensure decoupling and robustness on each channel by the robust H-infinite loop shaping. Secondly, the external loop is designed using the classical PID method on the base of decoupling internal loop. Both loops contain the part of anti-windup. The simulation results of the prototype model demonstrate that in both time and frequency domain, the performance of the controller meets the design requirement with a comparative simple structure. The results can also prove that it has some effect against to the model perturbation and achieve LEVEL1 of ADS-33E-PRF.

• Periodical: Applied Mechanics and Materials (Volumes 130-134)
• Pages: 1182-1185
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.130-134.1182
• Online since: October 2011
• Authors: Zhe Yan Lang, Ai Guo Wu
• Keywords: Decouple, Dual-Loop, Helicopter, Model Perturbation, PID, Robust H-Infinite Loop Shaping

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