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Black-Box Accuracy Compensation for a Cable-Driven Parallel Robot
Valentin Schmidt,Werner Kraus,Christoph Martin,Xuejun Jin,Andreas Pott 제어로봇시스템학회 2017 제어로봇시스템학회 국제학술대회 논문집 Vol.2017 No.10
This paper presents the findings of experiments done to increase the accuracy of a fully constrained cabledriven parallel robot with 8 cables and 6 degrees of freedom. Measurements were conducted using a Laser Tracker in 3 dof and the position accuracy mapped. Measurements were performed in a grid with 1920 points. From the measurement data distortion to the actual desired position is measured and using a linear approximation subsequent trajectories are compensated for any systematic errors. On an example robot, this black box correction brought an average improvement from 10.6 mm distance to the desired point to 2.47 mm distance from the desired point. This is a significant improvement m accuracy.
Optimization of compartments arrangement of submarine pressure hull with knowledge based system
정보영,김수영,신성철,Youn-Hoe Koo,Andreas Kraus 대한조선학회 2011 International Journal of Naval Architecture and Oc Vol.3 No.4
This study aims to optimize an arrangement of ship compartments with knowledge-based systems. Though great attention has been shown to the optimization of hull forms in recent years, the study on arrangement design optimization has received relatively little attention. A ship is both an engineering system and a kind of assembly of many spaces. This means that, to design an arrangement of ship compartments, it is necessary to treat not only geometric data but also knowledge on topological relations between spaces and components of a ship. In this regard, we select a suitable knowledge representation scheme for describing ship compartments and their relations, and then develop a knowledge-based system using expert system shell. This new approach is applied to create design variations for optimization on an arrangement of a pressure hull of a submerged vehicle. Finally, we explicate how our approach improves the design process.
Optimization of compartments arrangement of submarine pressure hull with knowledge based system
Chung, Bo-Young,Kim, Soo-Young,Shin, Sung-Chul,Koo, Youn-Hoe,Kraus, Andreas The Society of Naval Architects of Korea 2011 International Journal of Naval Architecture and Oc Vol.3 No.4
This study aims to optimize an arrangement of ship compartments with knowledge-based systems. Though great attention has been shown to the optimization of hull forms in recent years, the study on arrangement design optimization has received relatively little attention. A ship is both an engineering system and a kind of assembly of many spaces. This means that, to design an arrangement of ship compartments, it is necessary to treat not only geometric data but also knowledge on topological relations between spaces and components of a ship. In this regard, we select a suitable knowledge representation scheme for describing ship compartments and their relations, and then develop a knowledge-based system using expert system shell. This new approach is applied to create design variations for optimization on an arrangement of a pressure hull of a submerged vehicle. Finally, we explicate how our approach improves the design process.