...Ming Xin; Yunjun Xu; Ricky Hopkins It is always a challenge to design a real-time optimal full flight envelope controller for a miniature helicopter due to the nonlinear, underactuated, uncertain, and highly coupled nature of its dynamics. This paper integrates the control of translational...

... is an accurate representation of the system. Unfortunately, the Cramer–Rao bound is only valid for LTI systems and is not valid for linear time periodic (LTP) systems such as a helicopter rotor in forward flight. This paper describes an extension of the Cramer–Rao bound to LTP systems and demonstrates...

... negative values of speed. This fact may be significant in practice, especially when speed is limited to positive values, as is the case in ( 14 ). It is desired to make a helicopter-like UAV, modeled as a unicycle, track a sinusoidal trajectory. Such a high level modeling arises when the helicopter...

...Chen Haosheng; Chen Darong To identify the micro helicopter’s yaw dynamics, the system identification method is used and is proved to be suitable according to the validation results. In order to strengthen the information of the dynamics and reduce the effect of the noise when processing...

... OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL . Manuscript received by the ASME Dynamic Systems and Control Division June 23, 2003; final revision, January 22, 2004. Review conducted by: P. Li. 23 June 2003 22 January 2004 11 03 2005 helicopters aircraft control aerodynamics...

...Shengda Wang; Kourosh Danai; Mark Wilson An adaptive method of helicopter track and balance is introduced to improve the search for the required blade adjustments. In this method, an interval model is used to represent the range of effect of blade adjustments on helicopter vibration, instead...