巻号一覧
31 巻, 4 号
選択された号の論文の20件中1～20を表示しています
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亀岡 紘一, 松本 紀生, 小松 源一1995 年 31 巻 4 号 p. 411-416
発行日: 1995/04/30
公開日: 2009/03/27
ジャーナル フリーThis paper considers the following important problems to be clarified or solved for making evaluation, selection and design of golf shafts systematically on the basis of their static characteristics.
1) Expression of the deflection characteristics
2) Method for measuring the above expressing parameters and the flexural rigidity (EI-value)
3) Development of the apparatus for measuring the parameters and EI-value
As to the item 1), two parameters, curvature 1/ρ(x) and newly introduced parameter λ are proposed; the curvature expressing the figure of deflection of a shaft in microscopic measurement and the parameter in macroscopic measurement. Also it is shown λ is geometrically related to 1/ρ(x). As to the item 2), a calculation algorithm of the parameters and EI-value using an approximate polynomial fitted to the measured deflection data is discussed. As to the item 3), the basic construction and functions of the trially-constructed apparatus for measuring the deflection characteristics and EI-value and the experimental results are reported.抄録全体を表示PDF形式でダウンロード (1660K) -
シミュレート膝による結果広川 俊二1995 年 31 巻 4 号 p. 417-423
発行日: 1995/04/30
公開日: 2009/03/27
ジャーナル フリーThe objective of this study is to measure the change in shape and strain distribution over the entire surface of the Anterior Cruciate Ligament when its attachments are moved in three-dimensions, corresponding to knee flexion. An elaborate instrument (Knee Motion Simulator) was developed for measuring changes in shape and non-uniform distribution of strain in a Pseudo Ligament (crude rubber plate) when a three-dimensional displacement of the attachment was done.
Three-dimensional positions of 213 points, drawn in an uniform array at regular intervals on the pseudo ligament, were measured by the Stereo-photogrammetric method. Components of the Green-Lagrangian strain tensor were computed from squares made of four points each. Strain distribution on the ligament was arranged as a function of the knee angle, from 0° to 120° at intervals of 15°.
The experimental results demonstrated that; Strain distribution varied, even along the fiber direction, and large strain gradients were observed in the regions near the bone attachments.
On the anterior side, the region near the femoral bone attachment stretched noticeably at 60° of flexion, and almost the entire region along the fiber-direction stretched at 90° of flexion. The region near the tibial bone attachment stretched noticeably at 120° of flexion. On the posterior side, the strain in the region near the. femoral bone attachment was noticeable but not near the tibial bone attachment.抄録全体を表示PDF形式でダウンロード (2363K) -
石渡 裕政1995 年 31 巻 4 号 p. 424-428
発行日: 1995/04/30
公開日: 2009/03/27
ジャーナル フリーThe correction method is made up of three steps. First, the low temperature-coefficient resister is substituted for the thermister and the reference temperature is measured. Second, a body temperature is measured. The body temperature observed is affected by the changes in the room temperature and fluctuations of battery voltage. Third, the observed temperature in the second measurement step is corrected by the reference temperature measured in the first step and two other temperatures measured in advance and stored in ROM. These stored references are determined from the observation of the reference temperature at a specific room temperature and a specific battery voltage, and the observation of a known body temperature at a specific room temperature and a specific battery voltage. The analysis for each step was performed and examined by experiments. This method enables accurate measurement of a body tempeature without using expensive circuit elements besides the low temperature-coefficient resister in the first step.抄録全体を表示PDF形式でダウンロード (1680K) -
藤原 哲雄, 服部 晉1995 年 31 巻 4 号 p. 429-436
発行日: 1995/04/30
公開日: 2009/03/27
ジャーナル フリーA calibration method for monochromatic radiation thermometer utilizing tungsten strip lamp and blackbody at copper point suffers from a variety of error factors in its calibrating process.
Serious factors among them are uncertainties of central wavelength in interference filter and of optical coefficients of the radiation thermometer, and environmental disturbance to stability of the lamp.
Analysis of error factors and evaluation of measurement showed overall accracy of better than 8K at a temperature lower than 3500°C.抄録全体を表示PDF形式でダウンロード (1540K) -
中村 雅之, 杉本 岩雄, 桑野 博喜1995 年 31 巻 4 号 p. 437-443
発行日: 1995/04/30
公開日: 2009/03/27
ジャーナル フリーA chemical sensing system that uses a new type of sensor film and digital signal processing of their dynamic responses is described. This system consists of quartz crystal microbalances coated with plasma polymer films. These films are useful due to their high densities of radical sites and unsaturated bonds, which interact with gas molecules. Impedance analysis shows that a plasma-polymer-film-coated sensor is a durable and stable microbalance. When this sensor array is exposed to a gas, the adsorption and desorption of the target gas causes dynamic piezoelectric responses. Because the sensor films have an affinity for several types of gas, signal processing is needed to discern unique gas information. To analyze its response, we represent it by a linear filter, which is often used for estimating the parameters of dynamic systems. This filter has coefficients that represent the sensor's transfer function and these provide pattern vectors that characterize the target gas for classification. This filter shows that recognizing and quantifying the components of a gas mixture are possible using our sensing system. It also shows that the system can identify the sensor's transfer function even when the gas concentration changes, by using two sensors with different dynamic properties. These results show that this chemical sensing system is useful in a wide range of applications, such as chemical analysis systems and fire alarm systems.抄録全体を表示PDF形式でダウンロード (1757K) -
岡田 徳次, 伊藤 佳樹, 藤原 茂1995 年 31 巻 4 号 p. 444-453
発行日: 1995/04/30
公開日: 2009/03/27
ジャーナル フリーThis paper proposes measurement principles for a sensor aimed at detecting overall direction-of-action utilizing a unified optical device. The sensor is composed of a spherical vessel, a mirror ball and an optical element with a signal processor, and it resembles the equilibrium organs of a crayfish in function and form. On the inner surface of the spherical vessel, two sets of a luminous source surrounded by three photosensors are located in antipodal points. Some of the light beams emitted by the luminous source reflect on the mirror ball moving freely in the vessel and are captured by the photosensors. The photosensors' output are transferred to a signal processor and the location of the mirror ball is extracted through an appropriate procedure concerning the ball's size and displacement. Relationships between length of the optical path and luminous flux detected by the photosensors are formulated to build a basic principle for non-directive devices and a general principle for directional devices. Numerical data is shown to verify the validity of the principles by the simulation of the measurement.抄録全体を表示PDF形式でダウンロード (3006K) -
中野 健, 吉田 博樹, 羽根 一博, 大熊 繁, 江口 正1995 年 31 巻 4 号 p. 454-460
発行日: 1995/04/30
公開日: 2009/03/27
ジャーナル フリーWe propose the interferometric method of imaging micro-vibration by using a semiconductor pulsed laser diode. The Michelson interferometer was used to obtain stroboscopic interference image of the vibrating surface. The stroboscopic interference fringes were obtained with a vidicon camera. A micro-cantilever for an atomic force microscopy was used as a sample to demonstrate usefulness of the proposed technique. The micro-cantilever was excited by pressure of sound at a resonant frequency of 18.4kHz. The measured interference fringes were analyzed by the phase-measurement method (fringe scanning method). By changing time delay for the laser pulse irradiation, vibrations of the micro-cantilever at different phases were obtained. The distribution of the vibration was visualized sequentially. The measurement error was calculated to be approximately 20nm. The measured distribution of the vibration agreed well with the theoretical results calculated by the finite-element method. The method investigated in this paper will be useful for measuring micro vibrations of ultrasonic devices and micro-mechanical systems.抄録全体を表示PDF形式でダウンロード (2542K) -
田中 正吾, 金海 哲也, 寺田 幸博, 北村 暁晴1995 年 31 巻 4 号 p. 461-470
発行日: 1995/04/30
公開日: 2009/03/27
ジャーナル フリーIn excavating tunnels for subways and power cables, shield tunneling machines are used. The authors previously developed, for the machines, an automatic detection system which detected anomalous objects to prevent the cutters of the machines from being damaged and also to avoid the construction delay caused by the accident. The detection system used one transmitting and several receiving transducers (both sonic) located on the cutter plane of the machine to gather information on the anomalous objects and made use of the modeling of the transducers in order to realize a high-accurate detection of the reflected waves from the anomalouss objects even when they were superimposed to each other.
The paper proposes, based on the modeling and also the Snell's law on sonic wave reflection, a much more improved detection system which enables not only an accurate location of the objects, but also the measurement of the patterns of the objects. The validity of the proposed system is finally demonstrated with experiments in anechoic water tanks.抄録全体を表示PDF形式でダウンロード (2048K) -
長谷川 泰道, 松尾 強1995 年 31 巻 4 号 p. 471-480
発行日: 1995/04/30
公開日: 2009/03/27
ジャーナル フリーThe realization problem of pseudo-linear systems had been presented with the following realization theorem.
Realization theorem ⌈For any invariant input-response map (equivalently, any input/output map with causality and time-invariance), there exist at least two canonical pseudo-linear systems which realize it. Moreover any two canonical pseudo-linear systems with same behavior are isomorphic each other.⌋ Where electric circuits with FET transistors are examples of pseudo-linear systems. Moreover, the finite-dimensionality of pseudo-linear systems had been discussed.
In this paper, being based on the ubove results, we will discuss problems of the partial and real-time partial realization. The problems can be roughly described as the follows. The partial realization problem ⌈For a given partial time-invariant input response map by multi-experiments, find uniquely a minimal dimensional pseudo-linear system which partially realizes it. The real-time partial realization problem ⌈For a given partial time-invariant input response map by single-experiment, find uniquely a minimal dimensioal pseudo-linear system which partially realizes it. And the following results are obtained.
(1) A necessary and sufficient condition for minimal partial realization systems to be unique is given by the rank condition of input/output matrix.
(2) For a given partial time-invariant input response map by multi-experiments, an algorithm to obtain the minimal partial realization system is given.
(3) For a given partial time-invariant input response map by single-experiment, an algorithm to obtain the minimal realization system is given.
We conclude that these results about partial realization are the extention of the finite-dimensional, constant, linear systems to a non-linear system.抄録全体を表示PDF形式でダウンロード (2985K) -
渡辺 亮, 内田 健康, 藤田 政之, 示村 悦二郎1995 年 31 巻 4 号 p. 481-488
発行日: 1995/04/30
公開日: 2009/03/27
ジャーナル フリーGain scheduling is empirically known as an effective control technique for nonlinear systems of which dynamics are a function of equilibrium point. Since theoretical validation of stability and performance of the systems with scheduled controller is difficult, the validation is generally dependent on extensive simulations.
In this paper, we regard the nonlinear system as a linear system with scheduling parameter and derive a sufficient condition for stability and L2 gain performance (H∞ performance). Then, based on the condition, we propose a new design of scheduled controller.
In a numerical example, we design the scheduled controller to a given system, and evaluate its performance by computer simulation.抄録全体を表示PDF形式でダウンロード (2186K) -
美多 勉, Jeremy B. MATSON1995 年 31 巻 4 号 p. 489-496
発行日: 1995/04/30
公開日: 2009/03/27
ジャーナル フリーRecently the robust control theory is extensively studied and a number of new results including the H∞/H2 control have been developed. In the H∞/H2 control, we need to know a full parametrization of all nonstandard H2 controllers. However, the paramerization of nonstandard H2 controllers has not been well studied except several special cases. Therefore, in this paper, we shall derive complete parametrizations of all nonstandard H2 controllers for generalized plants of which D12 and D21 are of full rank.抄録全体を表示PDF形式でダウンロード (1556K) -
片山 徹, 南野 活樹1995 年 31 巻 4 号 p. 497-504
発行日: 1995/04/30
公開日: 2009/03/27
ジャーナル フリーThis paper considers an LQ regulator problem for a continuous-time descriptor system: Ex=Ax+Bu. We first derive a generalized Riccati differential equation (GRDE) for the finite-horizon nonsingular (det E≠0) descriptor regulator problem. Then we show that for the singular case (det E=0), a solution of the GRDE can be used for computing an optimal control and the optimal cost. For the infinite-horizon case, a generalized algebraic Riccati equation (GARS) is derived as a steady-state version of the GRDE. Based on the generalized eigenproblem associated with the Hamiltonian equation, we present a method of computing admissible solutions to the GARE and optimal feedback gains. Numerical examples are included.抄録全体を表示PDF形式でダウンロード (1303K) -
鳩野 逸生, 立脇 正敬, 馬野 元秀, 田村 坦之1995 年 31 巻 4 号 p. 505-512
発行日: 1995/04/30
公開日: 2009/03/27
ジャーナル フリーFor scheduling problems this paper deals with automatic generation of priority evaluation functions for filtered beam search method which is a kind of heuristic search. Generally, when scheduling problems become large and complex, it is difficult to obtain a priority evaluation function for filtered beam search. To cope with this difficulty, we apply case-based reasoning approach to obtaining a priority evaluation function automatically. In our scheduling system using filtered beam search, a priority evaluation function is created automatically by analyzing the examples of the schedules generated by the system. The priority evaluation function obtained is added to the knowledge base in the system as a sample of priority evaluation functions. Moreover, to evaluate the proposed scheduling system, we solve a transfer vehicle scheduling problem in a manufacturing system.抄録全体を表示PDF形式でダウンロード (1179K) -
最上 義夫, 馬場 則夫, 杉浦 公彦1995 年 31 巻 4 号 p. 513-520
発行日: 1995/04/30
公開日: 2009/03/27
ジャーナル フリーThe purpose of this paper is to construct a new learning algorithm for variable hierarchical structure learning automata operating in a nonstationary random environment by extending the relative reward strength algorithm proposed by Simha and Kurose. The learning property of our algorithm is considered theoretically, and it is proved that the optimal path probability can be approached to 1 as close as possible by using our algorithm. In numerical simulation, the number of iterations of our algorithm is compared with that of the variable hierarchical structure learning algorithm of LR-I type proposed by Mogami and Baba, and it is shown that our algorithm can find the optimal path after the smaller number of iterations than that of the algorithm of LR-I type.抄録全体を表示PDF形式でダウンロード (1585K) -
坂和 正敏, 乾口 雅弘, 加藤 浩介, 池田 知弘1995 年 31 巻 4 号 p. 521-528
発行日: 1995/04/30
公開日: 2009/03/27
ジャーナル フリーIn this paper, fuzzy programming approaches to multiobjective linear continuous optimal control problems are presented. For calculating approximate solutions of multiobjective linear continuous optimal control problems, we first discretize the time and formulate the corresponding approximate linear multiobjective programming problems. Then by considering the vague nature of human judgements, we assume that the decision maker may have fuzzy goals for the objective functions. Having elicited the corresponding linear membership functions through the interaction with the decision maker, if we adopt the fuzzy decision for combining them, it is shown that the formulated problems can be reduced to linear programming problems and the satisficing solution for the decision maker can be obtained through the simplex method of linear programming. A simple three-objective example is provided to indicate the efficiency of the proposed method.抄録全体を表示PDF形式でダウンロード (1538K) -
脈動誤差におけるテーパ管のテーパ角の影響金住 順二1995 年 31 巻 4 号 p. 529-531
発行日: 1995/04/30
公開日: 2009/03/27
ジャーナル フリーThe effect of the taper angle of the meter tube on the pulsation error of area-type flowmeter is examined theoretically. For some caces of the taper angle the pulsation errors are calculated on the basis of equation of motion taking into the factor of taper angle of meter tube. It is found that the pulsation error which are produced in the intermediate zone of pulsation frequency (0.2<λ<20) are influenced mainly by the taper angle of the meter tube.抄録全体を表示PDF形式でダウンロード (380K) -
浜田 登喜夫, 人見 聡一, 山嵜 春樹1995 年 31 巻 4 号 p. 532-534
発行日: 1995/04/30
公開日: 2009/03/27
ジャーナル フリーType R thermocouples were exposed at the atmosphere of 1400°C and 1200°C. After that, thermal EMF drift was examined at the freezing point of Au.
The stability of Type R thermocouples has been performed better than ±1.5°C at 1400°C, including EMF drift and error propagation.抄録全体を表示PDF形式でダウンロード (344K) -
小林 史典1995 年 31 巻 4 号 p. 535-536
発行日: 1995/04/30
公開日: 2009/03/27
ジャーナル フリーAlthough the time-optimal PLL provides for very rapid responses, existing analog realization has some drawbacks. This papers describes a digital implementation making use of counters to eliminate the otherwise inevitable adder.抄録全体を表示PDF形式でダウンロード (249K) -
杉本 謙二, 劉 毅, 井上 昭1995 年 31 巻 4 号 p. 537-539
発行日: 1995/04/30
公開日: 2009/03/27
ジャーナル フリーThis paper gives an elementary proof for an existing theorem on inversed interactorizing. The theorem is then applied to an explicit formula of the discrete-time LQ optimal regulator for singular weightings.抄録全体を表示PDF形式でダウンロード (374K) -
美多 勉, 張 慧1995 年 31 巻 4 号 p. 540-541
発行日: 1995/04/30
公開日: 2009/03/27
ジャーナル フリーZhou, Doyle and Glover showed a new method to derive the Youla-parametrization of all stabilizing controllers without using the coprime factorization approach in their newly published book. However, they did it one by one through three problems, the FI problem, the DF problem and the OE problem. In this paper, the authors shall propose an one step and simpler proof for this parametrization抄録全体を表示PDF形式でダウンロード (322K)
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