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System identification for helicopter yaw dynamic modelling

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4 Author(s)
Guanlin Wang ; Dept. of Comput. Sci. & Technol., Tsinghua Univ., Beijing, China ; Jihong Zhu ; Chengxu Yang ; Hui Xia

This paper presents a method to accurately identify the yaw-dynamic model of an unmanned helicopter. First, the model's structure is established by dynamic analysis. Then the model is reconstructed into a combination of three second-order subsystems. As the distribution of the damp ratios and natural frequencies of a second-order subsystems is limited, the model can be accurately identified from real-flight-test data. Finally, experiments are carried out to identify the yaw dynamic model. Results shown the modeling accuracy is improved through this approach.

Published in:

Computer Research and Development (ICCRD), 2011 3rd International Conference on  (Volume:4 )

Date of Conference:

11-13 March 2011