巻号一覧
2 巻 (1966)
- 4 号 p. 237-
- 3 号 p. 165-
- 2 号 p. 75-
- 1 号 p. 1-
2 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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江森 康文, 菊地 昭1966 年 2 巻 3 号 p. 165-174
発行日: 1966/09/30
公開日: 2009/03/27
ジャーナル フリーA new colorant mixture analog computer, which is based on the Kubelka and Munk two-constant media theory, has been constructed.
Using this equipment, concentrations of colorants of the color sample are rapidly calculated, and the non-linear calculating networks used at the concentration dials are very suitable for routine use for making calculations on higher concentration of colorant mixtures. The equipment is very simple and fairly straightforward in design and operation, and is perhaps very useful for calculating pigment mixtures to be used in color-matching and color control problems.
The results of computing application to one color-matching with the white pigment are shown by the numerical values and photographs as obtained through the use of our equipment, and the match is sufficiently close.抄録全体を表示PDF形式でダウンロード (2055K) -
原点付近の領域に到達させる場合増淵 正美, 嘉納 秀明, 松居 基夫1966 年 2 巻 3 号 p. 175-184
発行日: 1966/09/30
公開日: 2009/03/27
ジャーナル フリーSecond order control systems having two system prameters as control inputs, x+2u3x+u2x=0, are analysed for the optimal control problems to minimize the time from an arbitrary initial point to the region on a circle around the origin of the state space.
Applying Pontryagin's maximum principle to this problem, a unique solution is not necessarily obtained.
This paper presents the conditions of the unique solution and a method of obtaining the optimal trajectory when the unique solution is unobtainable and in addition, using analogue computer, the importance of a boundary line named “Separatrix” is shown in getting the optimal trajectory, and it is pointed out that the switching lines obtained by Pontryagin's maximum principle correspond to the extremum of the functional.抄録全体を表示PDF形式でダウンロード (2539K) -
杉浦 一郎, 成瀬 禎一1966 年 2 巻 3 号 p. 185-194
発行日: 1966/09/30
公開日: 2009/03/27
ジャーナル フリーThe basic difficulties of precise temperature control are investigated by controlling the temperature of a stirred water bath, as precisely as possible, which is thought most easily controllable.
Theoretical considerations show that (1) the effect of such disturbances as the room temperature change or the electric power souce potential variation can easily be diminished by ordinary continous control devices composed of an electronic PI controller and a magnetic amplifier etc. and the precision of the order of 1/10000 deg can be realized comparatively easily, but (2) the drift of temperature sensing element changes the above stated circumstances violently because the greater part of it passes through the temperature control closed loop network without attenuation and causes the gradual change of the controlled state.
The accuracy limitation for a long period of time is determined by the drift of temperature sensing elements.
So the drift of platinum resistance (or thermistor) bridge thermometer, especially the drift generated by the temperature variation of all components of the bridge, is analyzed, and the conditions that can, at worst, maintain the drift under 3/10000 deg for 24 hours are obtained.
The best results of the temperature control experiment with the platinum resistance thermometer operated under the required conditions are as follows; the accurracy for short period of time is about 1/6000 deg rms and the drift of controlled temperature is about 1/5000 deg per day.
The stirring action of water can not be so rapid that no inhomogenity of water temperature exists in the bath. The short range inhomogenity of the water temperature is considered the orgin of the short period fluctuation of controlled temperature.抄録全体を表示PDF形式でダウンロード (1178K) -
山本 巌1966 年 2 巻 3 号 p. 195-205
発行日: 1966/09/30
公開日: 2009/03/27
ジャーナル フリーThis paper is concerned with transfer characteristics of a pneumatic micrometer system with a negative feedback transducer. The system has two negative feedback pathes. One of them is based on the transfer characteristics of the feedback transducer which is introduced to linealize the transfer characteristic of the system and the other is caused by repulsive pressure force between nozzle and its counter face as an inevitable consequence of introducing the former. The feedback quantity through the latter is non-linear in relation to the output pressure but linear to the stiffness of the transducer.
The total static transfer characteristic is shown as the sum of the transfer characteristics of the above two feedback circuits and of the basic pneumatic micrometer.
The condition of reducing the above secondery feedback effect is discussed. Using a deviation ratio, defined by representing the transfer characteristic curve of the basic pneumatic micrometer circuit as a sum of an appropriate linear relation and the deviation from it, the linear range on the transfer characteristic curve of the system can be estimated from the feedback ratio of the feedback transducer, so far as the secondary feedback effect is small.
The dynamic performance and an application of the principle are also described.抄録全体を表示PDF形式でダウンロード (1322K) -
佐藤 拓宋1966 年 2 巻 3 号 p. 206-208
発行日: 1966/09/30
公開日: 2009/03/27
ジャーナル フリーPresented in this paper is a sufficient condition of the absolute stability of a kind of nonlinear stochastic system which is represented as a system of nonlinear stochastic differential equations.
By putting several assumptions on the properties of the nonlinear stochastic functions of the system, the sufficient condition of the absolute stability is derived in the same way as nonlinear non-stochastic case by using the same Liapunov function.抄録全体を表示PDF形式でダウンロード (297K) -
杉浦 一郎1966 年 2 巻 3 号 p. 209-219
発行日: 1966/09/30
公開日: 2009/03/27
ジャーナル フリーThe mathematical studies of optimal control processes are based on many idealized assumptions. When disturbances that are not known even statistically are considered, the optimum-controller must be readjusted every time the disturbances occur and the parameters of the plant must be compensated so as to maintain the deviation from the expected optimal state within some allowable limit. The control scheme can be realized only by using a high speed digital computer on its feedback circuit. This study presents all the mathematical conditions that are necessary to the scheme and accessible to modern high speed computers. The magnitude of disturbances (plant parameter variation) is estimated by solving an equation of observation that relates the parameter disturbances to the plant dynamic sensitivity coefficients. The deviation of the performance index (PI) is also calculated by means of the coefficients of PI variation. To a given margin for the deviation of PI, one simple procedure by which the deviation can be reduced to a value within the margin is proposed as an example.抄録全体を表示PDF形式でダウンロード (1334K) -
古田 勝久, 前田 知久1966 年 2 巻 3 号 p. 220-224
発行日: 1966/09/30
公開日: 2009/03/27
ジャーナル フリーIdentification of the dynamic characteristics is absolutely necessary for adaptive control systems where the dynamic characteristics may vary in time.
This paper presents a new type impulse response indicator based upon correlation technique, utilizing a pseudo-random binary test signal.
A digital type counter and a pulse frequency modulator composes the very stable integrating means in this indicator. The final computed results are presented on the columns of fluorescent indicating miniature tubes in the form of impulse response.抄録全体を表示PDF形式でダウンロード (1852K) -
古田 勝久1966 年 2 巻 3 号 p. 225-233
発行日: 1966/09/30
公開日: 2009/03/27
ジャーナル フリーRecent development of the adaptive and optimum control has brought many identification methods. Among these methods, the method using correlation technique is popularly used, for it is not contaminated so much by noise and the operating plant to be measured is not so much disturbed during measuring time. This correlation method becomes useful when dynamics ofthe static process is required to be measured in the weighting function form, because cross-correlation between input and output directly gives it by using white noise as its input test signal. But this cross-correlation function does not give the weighting function of the astatic process.
This paper presents an improved method that the certain transormed signal of the input and output directly gives weighting function of astatic process. This method also makes it possible to measure the derivatives of the weighting function. This paper also discuss the case when pseudo-random signal is used as input test signal instead of white noise. Several analog computer runs show satisfactory results.抄録全体を表示PDF形式でダウンロード (1082K) -
芝 亀吉, 大石 清, 土井 孝一郎1966 年 2 巻 3 号 p. 234-235
発行日: 1966/09/30
公開日: 2009/03/27
ジャーナル フリーPDF形式でダウンロード (323K)
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