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Accession Number ADA562883
Title Interpolation Approach to Optimal Trajectory Planning for Helicopter Unmanned Aerial Vehicles.
Publication Date Jun 2012
Media Count 65p
Personal Author J. C. Adams
Abstract This thesis explores numerical methods to provide real-time control inputs to achieve an optimal trajectory which minimizes the time required for a Helicopter Unmanned Aerial Vehicle (HUAV) to reorient to a given target. A library of optimal trajectories is populated using a pseudospectral computational algorithm applied to the mathematical model developed by the National University of Singapore and Singapore Department of Defense to simulate flight characteristics for their HeLion small scale HUAV system. The model is a complex system of non-linear differential equations-fifteen state variables and four control variables-used to simulate the aerodynamic forces on the HUAV. Then, using the library of optimal trajectories for known target locations, we apply interpolation methods to provide control inputs in order to intercept an attack heading to a target more quickly than an online, full scale optimization approach. All simulations in this thesis are modeled using the MATLAB program.
Keywords Aerodynamic characteristics
Aerodynamic forces
Bilinear interpolation
Huav(Helicopter unmanned aerial vehicle)
Nonlinear models
Numerical methods and procedures
Online systems
Real time
Target heading ingercept
Trajectory optimization

Source Agency Non Paid ADAS
NTIS Subject Category 51C - Aircraft
Corporate Author Naval Postgraduate School, Monterey, CA.
Document Type Thesis
Title Note Master's thesis.
NTIS Issue Number 1226
Contract Number N/A

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