Robust Optimal H2 Dynamic Output Feedback and Adaptive Feedforward Hybrid Control for Helicopter Vibration Reduction
The design of hybrid controller combining robust optimal H2 dynamic output feedback control and adaptive feedforward control of uncertain systems and for suppression of helicopter vibration has been investigated in this paper. The robust optimal H2 dynamic output feedback controller insures robust stability and gives an optimal upper bound of performance in H2 sense for any admissible value of the uncertainty. Feedforward control based on Fx-LMS algorithm was employed to form hybrid controller which reduces vibration of helicopter more efficiently. The presence of the feedback loop increases critical updating step size of the Fx-LMS algorithm remarkably and can improve the convergence rate and robustness of adaptive feedforward control system. Simulations based on a simplified airframe model demonstrated the effectiveness and robustness of the proposed hybrid controller.
Song Laishou Xia Pinqi
National Key Laboratory of Science and Technology on Rotorcraft Aeromechanics Nanjing University of Aeronautics and Astronautics Nanjing, Jiangsu, 210016, China
国际会议
南京
英文
1-7
2009-10-14（万方平台首次上网日期，不代表论文的发表时间）