منابع مشابه
Machine Learning for Helicopter Dynamics Models
Machine Learning for Helicopter Dynamics Models by Ali Punjani Master of Science in Computer Science University of California, Berkeley Professor Pieter Abbeel, Chair We consider the problem of system identification of helicopter dynamics. Helicopters are complex systems, coupling rigid body dynamics with aerodynamics, engine dynamics, vibration, and other phenomena. Resultantly, they pose a ch...
متن کاملApproximation - based control of uncertain helicopter dynamics
In this study, the altitude and yaw angle tracking is considered for a scale model helicopter, mounted on an experimental platform, in the presence of model uncertainties, which may be caused by unmodelled dynamics, or aerodynamical disturbances from the environment. To deal with the uncertainties, approximation-based techniques using neural network (NN) are proposed. In particular, two differe...
متن کاملQuadrotor Helicopter Flight Dynamics and Control: Theory and Experiment
Quadrotors are rapidly emerging as a popular platform for unmanned aerial vehicle (UAV) research, due to the simplicity of their construction and maintenance, their ability to hover, and their vertical take off and landing (VTOL) capability. Current designs have often considered only nominal operating conditions for vehicle control design. This work seeks to address issues that arise when devia...
متن کاملNeural Networks Based Identification of Helicopter Dynamics Using Flight Data
In this paper, identification of lateral and longitudinal dynamics of helicopter using flight data is presented. Neural networks with linear filter also known as Narendra's model and recurrent neural networks with intemal memory (Memory Neuron Networks) are used for the purpose. These networks are used for identifying the rate and attitude response of the helicopter to a given longitudinal cycl...
متن کاملParametrically Excited Helicopter Ground Resonance Dynamics With High Blade Asymmetries
The present work is aimed at verifying the influence of high asymmetries in the variation of in-plane lead-lag stiffness of one blade on the ground resonance phenomenon in helicopters. The periodical equations of motions are analyzed by using Floquet’s Theory (FM) and the boundaries of instabilities predicted. The stability chart obtained as a function of asymmetry parameters and rotor speed re...
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ژورنال
عنوان ژورنال: Journal of Applied Mechanics
سال: 1978
ISSN: 0021-8936,1528-9036
DOI: 10.1115/1.3424469