David J. Murray-Smith
Inverse simulation, inverse model, nonlinear, manoeuvre, underwatervehicle, actuator
Inverse simulation allows system inputs to be found to give model outputs that match required time histories. Examples include inputs needed for specific aircraft manoeuvres or movements of a robot arm and such cases lead to investigations that differ from conventional simulation studies. Inverse simulation has been used for aircraft and helicopter flight mechanics modelling for some time and provides alternatives to analytical methods of inverse modelling used in control applications. The approach is suitable for linear and nonlinear multi-input multi-output models as well as for single-input single-output descriptions. Methods include a so-called “differentiation approach, techniques that are termed “integration methods, approaches involving the solution of differential algebraic equations and a method based on feedback system principles. The feedback approach is given particular emphasis, through an example involving a dynamic model of an unmanned underwater vehicle.
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