計測自動制御学会論文集
Online ISSN : 1883-8189
Print ISSN : 0453-4654
ISSN-L : 0453-4654
2 巻, 2 号
選択された号の論文の11件中1~11を表示しています
  • 有本 卓
    1966 年 2 巻 2 号 p. 75-79
    発行日: 1966/06/30
    公開日: 2009/03/27
    ジャーナル フリー
    In this paper, a new approach to the analysis of power-density spectrum and average power is proposed, based upon the concept of state and matrix theory.
    A covariance matrix equation which is dual to the well-known matrix equation for the calculation of the mean-square deviation is derived and used in representing the power-density spectrum and the average power of the error in the time domain.
  • 渋谷 泰隆, 尾形 克彦, 関口 隆
    1966 年 2 巻 2 号 p. 80-85
    発行日: 1966/06/30
    公開日: 2009/03/27
    ジャーナル フリー
    This paper deals with a problem of optimal control of randam parameter systems. The performance index used is of quadratic form. The system is assumed to be adequately represented by a linear mathematical model. The solution of the problem reduces to that of an integral equation of Fredholm.
    The optimal control law obtained is linear, time varying, and its dependence on the randam variable is illustrated by a simple example.
  • 辻 節三, 平沢 宏太郎
    1966 年 2 巻 2 号 p. 86-93
    発行日: 1966/06/30
    公開日: 2009/03/27
    ジャーナル フリー
    In recent years many literatures about controls have been presented. But scientific forms are not yet completed. This paper treats the problem about a learning control which minimizes the conditional expectation of quadratic form of state vector and control, when correlated random parameters are involved in the control systems and the control has no constraint.
    Two cases are considered as follows.
    (1) Random parameter takes two values.
    (2) The variation of random parameter is Gaussian.
    We analyze the first case by using Bayesian theorem and the second case by using a mean square error theorem.
    By predicting future fluctuations of random parameters from their measured past values, we can get the proper control policies.
    Numerical example shows that the value of performance index with learning is better than the one without learning.
  • 井藤 綱一, 秋山 富二
    1966 年 2 巻 2 号 p. 94-100
    発行日: 1966/06/30
    公開日: 2009/03/27
    ジャーナル フリー
    Many researches on the dynamics of heat exchangers have been confined to outlet temperature response to inlet temperature disturbance of double pipe exchangers.
    This paper is concerned with dynamic responses of shell and tube heat exchanger to inlet temperature and flow rate disturbances.
    Experimental data were obtained for various flow rates. Those data were compared with theoretical results for frequency and time domain, and favorable agreements were obtained.
    Shell and tube side flow patterns were investigated separately, and fluid mixing in the direction of bulk flow passing through shell side, and unbalanced flow rate in pipes of 12 tubes were recognized from the experiments.
  • 伊沢 計介, 古田 勝久, 大野 秀嶺, 井藤 綱一, 秋山 富二
    1966 年 2 巻 2 号 p. 101-112
    発行日: 1966/06/30
    公開日: 2009/03/27
    ジャーナル フリー
    There have been proposed many methods to measure dynamic characteristics of linear processes, among them the correlation method using binary random test signal is powerful, because the dynamics can be measured fairly accurately with small amplitude test signal, and the test signal can easily be constructed and be manipulated for its binary characteristics.
    In this paper, the possibility to apply this method to industrial processes is examined by using heat exchanger plant. Experimental results of this heat exchanger test are compared with the experimental results obtained from the pulse test method and with the theoretical data, and good coincedence is observed. The computational procedure to calculate the dynamic characteristics and the considerations about a period of the test signal , minimum pulse width Δ and the data sampling interval δt are also presented.
  • 辻 節三, 満岡 弘雄
    1966 年 2 巻 2 号 p. 113-120
    発行日: 1966/06/30
    公開日: 2009/03/27
    ジャーナル フリー
    Ordinary dual-mode control systems have many good features. But their major disadvantage is the possibility of instability at the mode switching boundary. A special dual-mode control system is presented for the time optimal control for a step input.
    Our dual-mode control system consist of two parallel path which are a linear control path for small state deviation and a relay control path for large state deviation.
    We avoid the instability at mode switching boundary using an elliptic linear domain. The swiching boundary in the bang-bang domain is obtained with the maximum principle.
    The results of the experiment with the analogue computer show the possibility of being practically applicable.
  • 佐藤 勇, 井戸川 徹
    1966 年 2 巻 2 号 p. 121-131
    発行日: 1966/06/30
    公開日: 2009/03/27
    ジャーナル フリー
    Phase delayed copies of a given maximal-length binary sequence can be generated by making use of only one modulo 2 adder and a few delay elements in conjunction with the sequence generator (e.g. feedback shift register). This approach avoids the shortcommings caused by a large number of asynchronous logical networks for obtaining delayed replicas of a given m-sequence. It is also proved correct in some cases that the sample-hold of a given maximal-length sequence at every p bits gives the same successive p sequences with egual phase difference.
  • 八島 英之, 田井 昌輝, 長谷川 雅言
    1966 年 2 巻 2 号 p. 132-139
    発行日: 1966/06/30
    公開日: 2009/03/27
    ジャーナル フリー
    Generally speaking, there are two major kinds of dynamometers, one is called absorption dynamometer and the others are tortion bar dynamometers. The magnetic induction type torquemeter developed here falls under the classification of the latter, operating on a magnetic induction method to measure a torque from a tortion angle of the rotating shaft. While the conventional torquemeters of this sort have the slip rings, this new meters have no such a device, so that can be used for high speed machines with high accuracy and simple maintenance. In this paper, their principle, design practice, material selection, besides there calibration, and experimental results are described.
  • 西川 〓一, 三宮 信夫
    1966 年 2 巻 2 号 p. 140-151
    発行日: 1966/06/30
    公開日: 2009/03/27
    ジャーナル フリー
    This paper deals with the minimum-fuel transfer between neighboring elliptic orbits for a low-thrust power-limited propulsion system. Since an initial and a target orbit are located close to each other, the inclination between orbit planes is small and the radial separation between orbits is also small relative to the semilatus rectum of either orbit. This condition may allow the assumption that the motion in the transfer does not deviate significantly from the terminal orbits and that linearization of the gravitational terms in the equation of motion is permissible. In the case of circular terminal orbits, the equation of motion of the vehicle becomes a linear differential equation with constant coefficients; and the exact solution is obtained analytically. The orbital velocity of a vehicle revolving along an elliptic orbit varies periodically in time. This variation produces terms with periodic coefficients in the equation of motion; furthermore it results in the variation of fuel consumption with respect to position of the point of departure.
    When the eccentricities of the orbits are small, the time-varying terms in the equation of motion are also small. The small parameter method is applied for obtaining an approximate solution of the differential equation with periodic coefficients. The optimal thrust program is investigated by using Pontryagin's maximum principle. The motion of the vehicle and the fuel consumption under the action of the optimal thrust are also studied. The result obtained clarifies dependence of the fuel consumption on the transfer time and on the position of departure from the initial orbit.
  • 金井 寛
    1966 年 2 巻 2 号 p. 152-161
    発行日: 1966/06/30
    公開日: 2009/03/27
    ジャーナル フリー
    It is difficult to measure the pulsatile flow pattern with a small size probe of electro magnetic flow meter.
    In this paper, the relation between the accuracy and the uniformity of the magnetic field was discussed.
    When the magnetic field of electromagnetic flowmeter is non-uniform, conclusion is as follows.
    If the flow is steady, the difference of the sensitivity between laminar and turbulent flow measurements is very small and is often able to neglect for average blood flow measurements.
    But the error of pulsatile flow measurements is sometimes very large, since the velocity profile of pulsatile flow fluctuates very greatly.
    This error could be reduced when the magnetic flux distribute suitably.
    I have taken up the problem of trying to design a probe of small size which would sufficiently reduce the effect of the velocity profile on the sensitivity.
    The probe which I have discussed in this paper produce only a very slight error in flow pattern measurements. This probe is, moreover, even superior to the uniform magnetic field probe when measuring non-axially symmetrical flow.
  • 松代 正三
    1966 年 2 巻 2 号 p. 162-163
    発行日: 1966/06/30
    公開日: 2009/03/27
    ジャーナル フリー
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