Beagle 2 was a British-led mission to place a scientific Lander on Mars to search specifically for evidence of past or present life and to conduct geochemical and environmental investigations. It was launched aboard t...
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Standard for the exchange of product model data (STEP) AP218 has a standard schema to represent the structural model of a midship section. While its schema facilitate the exchange of ship structural models among heter...
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Standard for the exchange of product model data (STEP) AP218 has a standard schema to represent the structural model of a midship section. While its schema facilitate the exchange of ship structural models among heterogeneous systems, most shipyards and classification societies exchange information using 2D paper drawings. We propose a feature parameter input method to generate a 3D STEP model of a ship structure from 2D drawings. We have analyzed the ship structure information contained in 2D drawings and have defined a data model to express the contents of the drawing. We also developed a GUI for the feature parameter input. To translate 2D information extracted from the drawing into a STEP AP218 model, we have developed a shape generation library and have generated the 3D ship model through this library. The generated 3D STEP model of a ship structure can be used to exchange information between design departments in a shipyard as well as between classification societies and shipyards. (C) 2003 Elsevier Ltd. All rights reserved.
Standard for the exchange of product model data (STEP) AP218 has a standard schema to represent the structural model of a midship section. While its schema facilitate the exchange of ship structural models among heter...
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Standard for the exchange of product model data (STEP) AP218 has a standard schema to represent the structural model of a midship section. While its schema facilitate the exchange of ship structural models among heterogeneous systems, most shipyards and classification societies exchange information using 2D paper drawings. We propose a feature parameter input method to generate a 3D STEP model of a ship structure from 2D drawings. We have analyzed the ship structure information contained in 2D drawings and have defined a data model to express the contents of the drawing. We also developed a GUI for the feature parameter input. To translate 2D information extracted from the drawing into a STEP AP218 model, we have developed a shape generation library and have generated the 3D ship model through this library. The generated 3D STEP model of a ship structure can be used to exchange information between design departments in a shipyard as well as between classification societies and shipyards. (C) 2003 Elsevier Ltd. All rights reserved.
In this paper we describe some algorithms for implementing geometric procedures related to analysis and synthesis of controlsystems over rings. Software performing symbolic computations allows practical use of the al...
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The paper addresses the design of a robust output feedback controller for SISO systems using extremal transfer functions and the classical control theory approach. It focuses on robust stabilization of uncertain plant...
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This, the first of a two part paper, aims to propose the new concept of Minimal Structure control. The paper outlines and explains why there is a need for this additional class of multivariable controllers and why it ...
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controller design approach is described, which is based on genetic algorithms. The approach uses an optimisation procedure, where the cost function to be minimised consists of the closed-loop system simulation and a p...
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The paper addresses the problem of robust output feedback controller design with a guaranteed cost and parameter dependent Lyapunov function quadratic stability for linear continuous time polytopic systems. The propos...
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Most of the existing windup prevention schemes can only be applied in the presence of stable plants. In this paper a new windup prevention scheme for stable and unstable systems is presented, allowing to handle arbitr...
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The paper deals with a new procedure for robust output feedback controller design providing affine quadratic stability. The developed procedure leads to a noniterative LMI based algorithm. The proposed affine robust c...
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