A Model of Heave Dynamics for Bagged Air Cushioned Vehicles (original) (raw)

2019 IEEE Conference on Control Technology and Applications (CCTA)

Abstract

This paper presents a simple model of the heave (up-and-down) dynamics of an air cushioned vehicle. A set of nonlinear differential equations are extended to the case of a bagged air skates using a Forchheimer porosity approximation. The model exhibits stability under atmospheric pressure, and a tendency towards instability in near-vacuum conditions. Inner estimates of regions of attractions are found to verify stability in atmosphere, and track simulation shows system disturbance rejection under a drifting subtrack height and gaps.

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