منابع مشابه
Fast approximation of convex hull
The construction of a planar convex hull is an essential operation in computational geometry. It has been proven that the time complexity of an exact solution is Ω(NlogN). In this paper, we describe an algorithm with time complexity O(N + k), where k is parameter controlling the approximation quality. This is beneficial for applications processing a large number of points without necessity of a...
متن کاملIdentification of longitudinal and transversal dynamics of a fast ferry
An analysis of the system identification methods have been carried out and a new alternative approach is proposed in order to estimate models for heave, pitch and roll dynamics of a high speed craft. As starting point, a first approach resolves the identification subject as an optimization problem to fit the best model, and uses genetic algorithms and nonlinear least squares with constraints me...
متن کاملNeuro-fuzzy System to Control the Fast Ferry Vertical Acceleration
This paper shows the design of a neuro-fuzzy system to control the vertical motion of a TF-120 fast ferry, so that to improve the passengers comfort by reducing the main cause of seasickness. The aim of this controller is to decrease the pitch acceleration by controlling the position of some actuators, varying their working angles. The controller is based on a fuzzy model of the ship behaviour....
متن کاملNeuro-fuzzy Modelling of a Fast Ferry Vertical Motion
A neuro-fuzzy system has been developed to model the behaviour of a fast ferry. The sources of the available knowledge are the physical laws of the vertical dynamics of the craft, and some experimental and simulated data of the ship performance in regular waves. The non-linear model has been obtained by applying adaptive neurofuzzy inference. It is focus on the vertical motion of the craft, bot...
متن کاملQft versus Classical Gain Scheduling: Study for a Fast Ferry
In this paper a comparative study of two different control strategies is done: Gain scheduling with classic controllers (PD and second order filter) versus QFT. Both of them are used to decrease motion sickness in a high speed ferry produced by the vertical acceleration associated with heave and pitch motion. Copyright 2002 IFAC
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ژورنال
عنوان ژورنال: Journal of the Japan Welding Society
سال: 1992
ISSN: 0021-4787,1883-7204
DOI: 10.2207/qjjws1943.61.7_587