巻号一覧
1 巻, 3 号
選択された号の論文の9件中1～9を表示しています
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渡辺 金之助1962 年 1 巻 3 号 p. 169-177
発行日: 1962/03/10
公開日: 2010/10/21
ジャーナル フリーPDF形式でダウンロード (1346K) -
小川 典男1962 年 1 巻 3 号 p. 178-189
発行日: 1962/03/10
公開日: 2010/10/21
ジャーナル フリーThe improvement of industrial techniques has brought about a commercial availability of cadmium standard cells with an accuracy of 1×10-5 volts by means of a defined electromotive force. These high. precision standard cells obtained by the presented methods are able to be used in the field of more accurate electric measurements or standardizing of the conventional standard cells, because the accuracy of the emf of these cells is about ten times as high as that of conventional standard cells.
This work covers studies of the constituent materials of the cells and testing methods of the obtained standard cells. The selection of the materials, refinement of chemicals and analysis of trace impurity are developed and by applying the results of these basic studies, an assembling device of the cells and refining equipments of the chemicals are successfully constructed. In order to develop the testing techniques, room temperature of laboratories are controlled and temperature of oil in the testing bath is also automatically controlled. A special potentiometer is newly designed for an accurate inspection of the cells.
Temperature of laboratories is controlled within ±0.1°C to desired setting value (20°C and 9-30°C) and deviation of the controlled temperature of the testing oil bath is within ±0.01°C through several months operation. Accuracy of the potentiometer is ±0.2×10-6 volts.抄録全体を表示PDF形式でダウンロード (2246K) -
反発かたさの標準に関する研究-第1報飯塚 幸三1962 年 1 巻 3 号 p. 190-197
発行日: 1962/03/10
公開日: 2010/10/21
ジャーナル フリーFor accurately measuring the height of rebound of the hammer in rebound hardness test, the “rebounding time method”, in which the time of rebound is measured and converted into the height of rebound according to the equation of motion of the hammer, has been proposed. This method is adopted in the standard rebound hardness tester which is now being designed by the author, and an electronic device, which is capable of measuring the time interval between two successive impacts with an accuracy of 0.04 ms, has been developed. In order to examine the validity of the height deduced from the rebounding time, the direct measurement of the height is performed by means of a differential transformer device, simultaneously with the measurement of the time of rebound. A ferrite core is attached to the top of the hammer of a D-type Shore hardness tester and transformer coils are set in such a position that the core comes near the null position when the hammer is at the top of rebound. From the output voltage observed by a cathode-ray oscillograph when the hammer is at the top, height of rebound is obtained. The comparison of the height thus obtained with the height deduced from the rebounding time reveals that the latter is distinctly larger than the former, the difference being 0.02 to 0.06mm for the height of 4 to 12mm. The reason of the above discrepancy is discussed and it is found that more than half of the difference is ascribed to the time of impact, which is included in the time of rebound. If the correction of the impact time is applied to the measurement of the time of rebound, therefore, an accuracy of 0.025mm is expected for the rebounding time method.抄録全体を表示PDF形式でダウンロード (1739K) -
沢野 進1962 年 1 巻 3 号 p. 198-203
発行日: 1962/03/10
公開日: 2010/10/21
ジャーナル フリーThe term of “Process-Model-Control System” is introduced. The controller of this system consists of a high gain proportional regulator and a minor feedback loop containing process model. When this control method is applied to a process with large dead tiime which is considered to be difficult to control with a conventional controller, the process model serves to stabilize the system and excellent input-output response can be obtained.
The process-model-control system of second order is simulated on an analog computer, and the changes of input-output and disturbance-output responses caused by the variations of process model parameters are analyzed for the two typical processes with dead time, and how to adjust the process model parameters is studied for improvement of disturbance-output response.抄録全体を表示PDF形式でダウンロード (678K) -
船木 鉄夫1962 年 1 巻 3 号 p. 204-207
発行日: 1962/03/10
公開日: 2010/10/21
ジャーナル フリーThe logical calculator described in this paper is an experimental product manufactured for the purpose of minimizing Boolean functions and simplifying the switching circuits. Although various methods to simplify Boolean functions have been studied, it is believed that the fastest and simplest method among them is the one through Veitch diagram. Therefore, this calculator was so designed as to indicate some Boolean function to be simplified on the front panel in the form of Veitch diagram. The calculator checks a scheme as to whether or not the 8oo1ean function to be simplified is true against every possible state of variablcs and a lamp on Veitch diagram corresponding to the state in which the function is true is lighted. Veitch diagram obtained by this operation might give a new simple Boolean function.抄録全体を表示PDF形式でダウンロード (1844K) -
Jirí Beneš1962 年 1 巻 3 号 p. 208-213
発行日: 1962/03/10
公開日: 2010/10/21
ジャーナル フリーThe purpose of this paper is to deal with some recent results in the Statistical Dynamics of Control systems, especially with those, connected with the use of the concept of the power spectral density of a random process.
The choice of spectral densities for the description of stationary random processes in a linear control system with constant parameters is founded mainly on the relatively simple relations:
(1)
(2)
where F (jω) is the frequency characteristic of the quadripole considered. Sxx (ω), Syy (ω) are power spectral densities respectively of the input and of the output random processes, Sxy (ω) is the power cross spectral density of the input and output random processes of the quadripole. This paper presents a new algorithm of the mean square error of a servomechanism caused by random processes. The mean-square error of a simple and a multidimensional servomechanism has been computed using this algorithm. A new instrument, the Orthogonal Analyzer of random processes with Laguerre function modulators, has been developed to make the computation of the mean-square error of control systems caused by a random process.抄録全体を表示PDF形式でダウンロード (828K) -
渡辺 文明, 小島 一男, 俵口 久元, 井上 幸美1962 年 1 巻 3 号 p. 214-225
発行日: 1962/03/10
公開日: 2010/10/21
ジャーナル フリーTwo measuring systems for accurate control of rotation speed are described. The one is the beat method, while the other the counting method. In the former, the beat between pulse frequency in proportion to rotation speed and accurate standard frequency is taken up and its frequency is detected. In the latter, the pulse in proportion to rotation speed is successively diminished in proportion to a fixed speed. Time interval of the diminished pulse is compared with accurate standard time. The beat method is quick in response and can make an accurate measurement, while the counting method is featured in making a wide-range accurate measurment.抄録全体を表示PDF形式でダウンロード (1521K) -
柄沢 忠義1962 年 1 巻 3 号 p. 226-232
発行日: 1962/03/10
公開日: 2010/10/21
ジャーナル フリーPDF形式でダウンロード (9325K) -
横山 謙三, 飯山 邦夫1962 年 1 巻 3 号 p. 233-234
発行日: 1962/03/10
公開日: 2010/10/21
ジャーナル フリーPDF形式でダウンロード (281K)
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