巻号一覧
60 巻, 570 号
選択された号の論文の54件中51～54を表示しています
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武田 行生, 舟橋 宏明1994 年 60 巻 570 号 p. 701-708
発行日: 1994/02/25
公開日: 2008/02/26
ジャーナル フリーIn the process of mechanism design and trajectory planning of in-parallel actuated manipulators, it is necessary to grasp the locations of all of singular points in the working space. This paper proposes a new method for numerically searching for the singular points of in-parallel actuated manipulators based on the pressure angle. A singular-point curve is defined as a set of singular points. Since the working space is divided into multiple regions by the singular-point curves, the end-effector cannot move freely from one region to any other regions. Kinematic and static characteristics at singular points are analyzed by pressure angles and instantaneous screw axes. Singular points of the Stewart-Platform are investigated based on the proposed method. Characteristics in the neighborhoods of singular points are analyzed from the points of view of output error, isotropy of output force and driving force, and the practical working space is defined.抄録全体を表示PDF形式でダウンロード (812K) -
落合 芳博1994 年 60 巻 570 号 p. 709-714
発行日: 1994/02/25
公開日: 2008/02/26
ジャーナル フリーThis paper describes a method of generation of a free surface by the boundary integral equation using the poly-harmonic function. This method requires boundary geometry of the free surface and the lines on the free surface, which are, for example, contour lines. The height of points on the free surface is calculated, after solving the discretized boundary integral equation. The complicated free surface must be divided into several free surfaces, the height of which approximately satisfies the Poisson equation. In order to investigate the efficiency of this method, several examples are given.抄録全体を表示PDF形式でダウンロード (598K) -
森 秀之, 小林 広明, 中村 維男1994 年 60 巻 570 号 p. 715-720
発行日: 1994/02/25
公開日: 2008/02/26
ジャーナル フリーDesigning mechanical systems by means of special-purpose languages is very effective because they can define objects preciesly. However, this causes serious problems. First, the amount of description is very large in the case of designing complex systems. Second, those languages are not suited for modeling objects at higher abstraction levels. To solve these problems, this paper presents a novel description language for mechanical design called MODEL (Mechanical-design-Oriented DE scription Language). MODEL is designed in order that the designer's intentions can be efficiently reflected in the specifications of mechanical systems. We introduce a new concept, design granularity, so that designers can model objects of a mechanical system at different abstraction levels. Moreover, to reduce the amount of description, we use knowledge bases for mechanical design as a library for MODEL. The design process with MODEL is discussed in detail to clarify the capabilities of the language.抄録全体を表示PDF形式でダウンロード (733K) -
新野 秀憲, 大滝 亮一, 伊東 誼1994 年 60 巻 570 号 p. 721-726
発行日: 1994/02/25
公開日: 2008/02/26
ジャーナル フリーIn order to rationally realize a production environment in the future, it has become of the utmost importance to investigate and develop sensing technology for ambiguous quantities, which enables the six senses of humans to be replaced by engineering methods. In particular, it is essential to develop an in-process monitoring system for ambiguous quantities based on the visual sense, which can simultaneously automate the conventional inspection procedure on a production line. In this paper, therefore, to establish sensing technology for color unevenness, a multidimensional quantitative evaluation method has been proposed for the first time. The validity of the proposed method has been verified through some case studies by applying it to image processing of plastic injection mold products.抄録全体を表示PDF形式でダウンロード (684K)