巻号一覧
58 巻, 10 号
選択された号の論文の25件中1～25を表示しています
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井上 久仁子, 宮崎 義隆1992 年 58 巻 10 号 p. 1629-1632
発行日: 1992年
公開日: 2009/10/08
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小平 紀生1992 年 58 巻 10 号 p. 1633-1638
発行日: 1992年
公開日: 2009/10/08
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毛利 峻治1992 年 58 巻 10 号 p. 1639-1641
発行日: 1992年
公開日: 2009/10/08
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若井 秀之1992 年 58 巻 10 号 p. 1642-1644
発行日: 1992年
公開日: 2009/10/08
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徳田 英幸1992 年 58 巻 10 号 p. 1645-1648
発行日: 1992年
公開日: 2009/10/08
ジャーナル フリー本稿では, 高度分散リアルタイムオペレーティングシステムReal-Time Machの概要, 特にリアルタイムスレッド, リアルタイムスケジューラ, リアルタイム同期機構に関して概説した.現在Real-Time Machは, Sun3, DECstation5000, i386/486PCマシン上で稼働している.特に, CBSRP (Capacity-based Session Reservation Protocol), XTP (Express Transport Protocol) 等のリアルタイムプロトコルの開発, マルチメディアサーバ/ツールキット, ビデオホーンシステム, リアルタイムデータベースサーバ等の研究開発に利用されてきている.また, 新しいシステム機能として, ネットワークプロトコルサーバ (NPS) やリアルタイムIPCなどの拡張が行われている.Real-Time Machは, Mach3.0と同様にCMUから配布されており, 詳しい情報は, 電子メールでmach3@cs.cmu.eduへ問い合わせることができる.抄録全体を表示PDF形式でダウンロード (871K) -
高田 昌之1992 年 58 巻 10 号 p. 1649-1651
発行日: 1992年
公開日: 2009/10/08
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生産管理システムを例にして井上 一郎1992 年 58 巻 10 号 p. 1652-1655
発行日: 1992年
公開日: 2009/10/08
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荒井 栄司1992 年 58 巻 10 号 p. 1656-1659
発行日: 1992年
公開日: 2009/10/08
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本郷 幹雄, 佐野 秀造, 上村 隆, 水越 克郎1992 年 58 巻 10 号 p. 1661-1666
発行日: 1992年
公開日: 2009/10/08
ジャーナル フリーThis paper describes the details of an on-chip interconnection system using pyrolytic decomposition of molybdenum hexacarbonyl irradiated with an argon ion laser beam. This system consists of five chambers (CVD, sputter deposition, sputter etching, transportion and load-lock chambers). The system has the ability not only to form molybdenum conductors by laserinduced CVD but also to form chromium film as a barrier by sputter deposition, remove chromium film by sputter etching and reduce resistivity of molybdenum conductors by laser annealing. After the contact holes are formed on LSI chips by the focused ion beam (FIB) system. LSI chips are transported to this system in a vacuum using the container attached to a vacuum pump system and gate valve. The process to make interconnects can be carried out all the way through without exposure to the air. With this system and process, low resistive contacts and low resistive conductors for failure analysis or modification can be obtained and the development time of LSIs and electronic systems using LSIs can be shortened.抄録全体を表示PDF形式でダウンロード (4243K) -
岡本 裕幸, 米澤 洋1992 年 58 巻 10 号 p. 1667-1671
発行日: 1992年
公開日: 2009/10/08
ジャーナル フリー開発したシステムは現場での実験結果より, 周囲の明るさの変動に関係なく, 十分な処理速度で溶接ナットの位置を確実に検査でき, 実用に供することができると判断した.
また, 独自に考案した動的しきい値決定方法も良好であることが確認できた.
この検査原理は明るい画面内の暗い部分の位置, 大きさを検査するものである.従って, ナットだけでなくその他の位置検査にも応用可能である.抄録全体を表示PDF形式でダウンロード (6097K) -
能登 信博, 森 金太郎1992 年 58 巻 10 号 p. 1672-1678
発行日: 1992年
公開日: 2009/10/08
ジャーナル フリーA direct current arc discharge plasma jet Chemical Vapor Depositon (CVD) method has achieved very high growth rates of diamond by spraying a plasma jet onto a water-cooled substrate. The initial, experimental scale diamond films thus synthesized on a substrate were small in area, less than 10 mm in diameter. A large area of diamond film formed with a high growth rate is presupposed to be required, but this only has partially been obtained. By rotating a tungsten, substrate during spraying, the area of diamond deposited on the substrate was observed to be about 4 times as large as that on a fixed tungsten substrate. Raman spectroscopy determined the diamond obtained by this method included a small quantity of amorphous carbon. However, diamond Raman spectra obtained from within the diamond indicated the diamond had a diameter of about 20 mm. More recently, a diamond film that has a diameter of about 30 mm has been obtained by rotating the substrate while moving it horizontally.抄録全体を表示PDF形式でダウンロード (7771K) -
研削量と研削抵抗に及ぼす磁場の影響熊谷 一男, 神谷 修, 森田 武1992 年 58 巻 10 号 p. 1679-1684
発行日: 1992年
公開日: 2009/10/08
ジャーナル フリーThe grinding tests were performed in the magnetic field by using the ferromagnetic materials of Ni, S45C and SUS430 steels. The stock removal and the grinding force increase by 5-21% and 3-9% respectively when the workpieces are magnetized up to 16mT by the alternating current. The rate of increase of the stock removal is greater in cases of smaller load on the workpiece, larger size of the abrasive grain and slower grinding speed. Those effects are more remarkable in case of the SiC abrasive grain rather than the Al2O3 grain. The increase in stock removal is assumed to be caused by the increase in the movable dislocations which are brought about the interaction between the dislocations and the vibrating magnetic-domain-walls as well as by the ΔE effect.抄録全体を表示PDF形式でダウンロード (1084K) -
新谷 一博, 加藤 秀治, 前田 隆夫, 藤村 善雄, 山本 明1992 年 58 巻 10 号 p. 1685-1690
発行日: 1992年
公開日: 2009/10/08
ジャーナル フリーCutting performance of CBN tool for the turning of nickel based superalloy (Inconel 718) which is known as one of the difficult to machine materials has been investigated. It was clarified through the microscopic observation of tool-tip after cutting that adhering of the workpiece material to the tool tip occurred and the adhesion affected significantly on the tool life. The type of tool wear varied with cutting speed. Reaction between the workpiece and tool materials was also investigated through a simulated experiment in which both materials were attached with clump and heated up to 1 473 K. Then, the vicinity of the reaction couple was examined carefully by EPMA EDX and AES. Mutual diffusion between the binder phase of the CBN tool and workpiece was observed. Apparently, it could be concluded that such kind of material transfer promoted the tool wear.抄録全体を表示PDF形式でダウンロード (10177K) -
工具欠損評価用サブシステムを利用した作業設計松村 隆, 帯川 利之, 白樫 高洋, 臼井 英治1992 年 58 巻 10 号 p. 1691-1696
発行日: 1992年
公開日: 2009/10/08
ジャーナル フリーIt is difficult to select the optimum cutting conditions in interrupted cutting because there is no standard for tool exchange. This paper describes a machining operation planning for selecting them using tool failure evaluation system. In the system, life distribution of brittle tool is predicted quickly by neural network, and the prediction error is estimated as one-sided interval at 90% confidence level. Then combination of optimum cutting conditions and tool exchange cycle is selected so as to minimize the expected machining cost or time for given work material and cutting operation. The presented approach in this paper is applicable to various machine shops.抄録全体を表示PDF形式でダウンロード (1146K) -
樋口 静一, 赤尾 茂, 斎藤 義夫, 花岡 忠昭1992 年 58 巻 10 号 p. 1697-1703
発行日: 1992年
公開日: 2009/10/08
ジャーナル フリーMany types of lapping films are manufactured today. This is because they greatly improve the finishing process and reduce the finishing costs. However, the effects of the structural characteristics of lapping films and the elastic contact conditions between contact roll and workpiece on the performance of finishing have not yet been fully explained. In this study, finishing of cylindrical workpiece surfaces were carried out with different contact pressures applied to the workpiece surfaces and with rubber contact rolls of different hardness, using lapping films of different backing thickness and grain sizes. As a result, the effects of them on the finished surface roughness, the ground amount and the accuracy of their forms were clearly recognized. And useful suggestions were obtained for implementing the lapping film finishing effectively.抄録全体を表示PDF形式でダウンロード (1097K) -
八高 隆雄, 三浦 恒正, 長谷川 正1992 年 58 巻 10 号 p. 1704-1706
発行日: 1992年
公開日: 2009/10/08
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追加学習方法について米田 孝夫, 山中 将, 嘉数 侑昇1992 年 58 巻 10 号 p. 1707-1712
発行日: 1992年
公開日: 2009/10/08
ジャーナル フリー効率のよい追加学習を行うために, 追加データを含めた至近の有限個のデータを学習しながら, 傾向を保存する方法を提案し, その効果を評価し, 以下の結果が得られた.
(1) 類似度を用いて, バッファから削除するデータを決定することにより追加学習を精度よく行うことができる.類似度としてはパターン間のユークリッド距離が有効である.
(2) クラスタリングにより圧縮したデータを学習することにより追加学習を精度よく行うことができる.特長として, 誤差の変動がなめらかなことと, 初期の挙動が安定していることがあげられる.抄録全体を表示PDF形式でダウンロード (1059K) -
増田 健, 山口 富士夫1992 年 58 巻 10 号 p. 1713-1720
発行日: 1992年
公開日: 2009/10/08
ジャーナル フリーThis paper describes a method of reconstructing a polyhedron from orthographic views. First, a wire frame model is created. This is achieved by referring to the corresponding relationship among three orthographic views. Then a surface model is generated by making loops out of coplanar edges. Such a surface model consists of ghost figures. This paper deals with the ghost figure eliminating procedure as determination of flags, flags referring to nodes in the constraint relationship network. The flag of each node in this network represent true, false or undecided. With this approach, many rules in consistency checking and local value propagation are systematically organized, and the consistency managing procedure is completely isolated from the search procedure. As a result, the systematic rules can be adopted at any time in the search process when needed. The method implemented in this paper shows the way to use consistency checking and local value propagation effectively.抄録全体を表示PDF形式でダウンロード (1578K) -
図面構造モデルに基づくトップダウン処理北嶋 克寛, 諏訪 光信, 岩谷 隆雄1992 年 58 巻 10 号 p. 1721-1727
発行日: 1992年
公開日: 2009/10/08
ジャーナル フリーThis paper presents a 2-D structural model for mechanical drawings and top-down recognition processing based on it. The structural model is composed of an attribute representation model which represents geometrical attributes of drawing elements and a relationship representaion model which represents latent relations between them. Both play important roles not only in top-down processing but also later in a highly-functional 2-D CAD system, which the recognition system is focusing on as a target of its application. The authors first propose the configuration of this model and then the method of top-down processing, which includes the modification of misrecognition, the fixation of unseparated elements in bottom-up processing and the method of automatically generating the relationship representation model from the input attribute representation model. All these processing are done based on the production rules which is composed of both JIS drawing rules and tacit understandings. Some examples are finally shown.抄録全体を表示PDF形式でダウンロード (1330K) -
花田 武昌, 星 鐵太郎1992 年 58 巻 10 号 p. 1728-1734
発行日: 1992年
公開日: 2009/10/08
ジャーナル フリーFor the purpose of fully automating the transformation of CAD designed product data into the information necessary for machining the product, a new method of Machining Feature-Based CAD/CAM has been investigated. By modifying the existing Parametric Feature-Based CAD methodology into one using only geometrical features machinable by defined cutting technologies, a Machining Feature-Based CAD system has been developed, by which it is possible to fully automate the processing of the succeeding CAM tasks for fabrication of block-like components. The CAD/CAM system has demonstrated a future possibility of highly automating production of low volume high product-mix items of block-like components which fall into a sub-set class of prismatics.抄録全体を表示PDF形式でダウンロード (5978K) -
パワースペクトル密度関数による解析伊藤 憲朗, 塚田 忠夫, 笹島 和幸1992 年 58 巻 10 号 p. 1735-1740
発行日: 1992年
公開日: 2009/10/08
ジャーナル フリーMicro-irregularities of machined surface are classified into three regions by means of power spectral density function. The first region is made of longer wave which is called waviness or form errors. The second shows fractal-like property and the third contains simple form asperities only. This report presents that these characteristics are shown more clearly by the power spectaral density function than the structure function. From these characteristics, this report recommends a cut-off value of low pass filter for waviness and an optimum sampling interval for digitiziing data.抄録全体を表示PDF形式でダウンロード (860K) -
高橋 久1992 年 58 巻 10 号 p. 1741-1746
発行日: 1992年
公開日: 2009/10/08
ジャーナル フリーThis paper deals with a feedforward-control method of the armature current for a DC servomotor driven in a PWM mode. The armature current is computed using a DSP based full digital circuit from motor parameters (armature resistance, back emf constant, and inertia), speed and drive circuit impedance without current feedback. The PWM ratio, which is given in reference to the current command, is calculated using the computed armature current. A computing block, which is referred in the paper as an estimation unit, is incorporated to estimate the sum of the armature resistance and the output resistance of the drive circuit, which are both very sensitive to temperature. By this method, the armature current can be adjusted much closer to the current command compared to a system without an estimation unit. The conclusions are (1) accurate PWM ratio commands can be obtained using the computed value of the armature current without real current feedback, (2) by incorporating the estimation unit, the accuracy of the control system is increased, and (3) this technique can be applied to the designing of full digital LSI's for motor controls.抄録全体を表示PDF形式でダウンロード (1144K) -
最大負荷外力について辻 裕一, 鈴木 雅博, 武藤 治, 丸山 一男1992 年 58 巻 10 号 p. 1747-1752
発行日: 1992年
公開日: 2009/10/08
ジャーナル フリーThe allowable load on bolted joints tightened in the plastic region is studied experimentally. Behavior of the joints are investigated in different tightening region of the bolt such as elastic region, yield point and plastic region, varying stiffness of clamped parts and the strength grade of the bolt. As a result, it is shown that the additional elastic increase in the axial tension of the bolt under external load is independent of the joints stiffness or the elongation of the bolt at tightening. Load capacity of the joints tightened in plastic region is higher than that in elastic region by 5-10%. Permitting the decrease of initial clamping force by 10%, the allowable load is 90% of the yield strength of the bolt for the joint having lower stiffness, and is equal to the yield strength for one having higher stiffness. The allowable load estimated in the joint (load cell) whose stiffness is lower than actual condition is in safety zone.抄録全体を表示PDF形式でダウンロード (1040K) -
河村 喜雄, 小比田 啓之, 田中 伸司, 内田 憲孝1992 年 58 巻 10 号 p. 1753-1758
発行日: 1992年
公開日: 2009/10/08
ジャーナル フリーIncreasing the efficiency of hybrid generation of biological cell using a fusion apparatus requires a large number of viable protoplasts, which are classified beforehand from suspension-included viable and disintegrated biological cells. A cytometric classifier has been developed for protoplasts whose diameters are more than about ten micrometers. This paper introduces a new classification method. Protoplasts are supplied through a sheath flow in a flow cell and their images are focused on four slits arranged at different angles to streamline and scan the moving images relatively. Through these slits, three direction length of a protoplast are measured and the protoplast is classified. The classified protoplasts are sorted into microchambers in isotonic solution. Cytometric resolution of the present classifier is ±10 μm. From the experimental result, knowledge is obtained on the improvement of cytometric resolution and classifying efficiency.抄録全体を表示PDF形式でダウンロード (4604K) -
摩擦力の大きさと移動特性樋口 俊郎, 山形 豊1992 年 58 巻 10 号 p. 1759-1764
発行日: 1992年
公開日: 2009/10/08
ジャーナル フリー圧電素子の急速変形を利用した移動機構の摩擦力の大きさの影響は次のようにまとめることができる.
(1) 駆動パターン2および3では, Racは摩擦力に応じて, 移動量を最大とする最適値があり, Racを摩擦力に応じた最適値に設定すれば, 摩擦力が増大しても移動量はほとんど減少しない.
(2) 駆動パターン1および3ではTriseをある程度小さく取れば, 摩擦力が増大しても得られる移動量はほとんど減少しない.
(3) 摩擦力を大きくするとパルスレートを上げられるために, 最大速度を大きくすることができる.今回の実験では9.5mm/sが得られた.
(4) 摩擦力を大きくすることで自重に逆らって垂直な面を上ることも可能である。今回の実験では摩擦力を6.8Nのとき80gfの自重に逆らって垂直な面を上ることが可能であった.
(5) 最大負荷力は静止摩擦力に比例し, その比例係数は1/4から1/5である.
以上のことより, 本機構は摩擦力を大きくした場合でも駆動パラメータを適切な値に設定すれば一定の移動量を得ることができ, さらに最大速度, 負荷能力ともに増大させられることが明らかとなった.静止摩擦力を重力による垂直抗力のみによって発生させている移動体では水平面内の移動しかできなかったが, 磁力やばねによる力, 静電力などによって摩擦力を高めることで最高速度および負荷能力を増大させられ, 垂直な面での移動や3次元的な移動機構への応用も可能となる.これによって本機構の応用範囲の大幅な拡大が期待される.
今後は摩擦力の大きさに関連して急速変形あるいは引き戻しと急停止の際に圧電素子によって発生する力を定量的に評価したい.抄録全体を表示PDF形式でダウンロード (970K)
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