巻号一覧
3 巻, 12 号
選択された号の論文の7件中1～7を表示しています
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大内 淳義1964 年 3 巻 12 号 p. 907-915
発行日: 1964/12/10
公開日: 2010/10/21
ジャーナル フリーPDF形式でダウンロード (2429K) -
後藤 竜夫, 逸見 浩平1964 年 3 巻 12 号 p. 916-923
発行日: 1964/12/10
公開日: 2010/10/21
ジャーナル フリーDescribed in this paper is a transistorized A-D converter of voltage feed back type, which converts input voltage into 7 bits binary code in 1μs. Its input voltage range is O to-4V and input impedance is 2kΩ.
D-A converter (Fig. 7) is a ladder type circuit composed of transistors and diodes. The error of D-A conversion caused by forward voltage drop of diodes and saturated transistors is compensated by adjusting the reference voltage. As the comparator circuit is composed of an Esaki diode pair, comparison is finished in a very short time interval producing positive or negative pulse of good S/N ratio, which is easily amplified up to a suitable level.抄録全体を表示PDF形式でダウンロード (1267K) -
東口 実1964 年 3 巻 12 号 p. 924-935
発行日: 1964/12/10
公開日: 2010/10/21
ジャーナル フリーDescribed in this paper is a new circuit having the special output waveform suitable to drive the two-phase servomotor. The circuit “Twisted Waveform Magnetic Modulator” is composed of two saturable transformers and a (non-saturable) transformer. Primary winding pairs, either of which is made of the series connection of a primary winding of saturable transformer and the half of the center-tapped primary winding of the transformer in the same polarity, are connected to the voltage source (Esm, sin ωt) in parallel but with reverse polarity to each other. The secondary winding of each transformer series-connected in the same polarity delivers output power. The waveform of output voltage is represented as follows,
ELm sin ωt, for -α<ωt -2π π<α
-ELm sin ωt, for α<ωt -2nπ<2π-α
due to alternative saturation of each core of saturable transformers. Its saturation period is controlled by AC or DC current flowing through the control windings of saturable transformers, so that α goes to zero or π according to the polarity of control current. When the control current is zero, α =π/2 and the frequency of output voltage is twice as high as the frequency of powersupply, so that the output voltage has a twisted sinusoidal waveform, that is, the phase of fundamental sinusoidal voltage is abruptly reversed at each peak. When the control current flows, however, the output voltage waveform changes gradually into the normal sinusoidal waveform of the same frequency as that of the power supply. In this control, the peak value of the output voltage does not change and only the twisting angle α does. Then, the two-phase servomotor is easily driven to full rating by the Twisted Waveform Magnetic Modulator and there are not seen such defects as less damping, jump or hysteresis in the control characteristics and excessive circulating current all experienced in the magnetic servoamplifier.抄録全体を表示PDF形式でダウンロード (2102K) -
松島 晧三, 中田 孝1964 年 3 巻 12 号 p. 936-940
発行日: 1964/12/10
公開日: 2010/10/21
ジャーナル フリーIn a vibrograph having a pendulum, the period of the pendulum generally should be sufficient ly longer than that of the fundamental component involved in the wave to be measured. Therefore, the longest period of the comoponent of the wave to be measured by the vibrograph, is restricted by the natural period of the pendulum. But, the longer the period is, the more difficult the design of the pendulum becomes. This paper presents the principle and experimental results of the new pendulum called “Servo-pendulum”. The actual natural period of the servo-pendulum can be lengthened by application of a technique of feedback control to an ordinary pendulum of comparatively short natural period. The results of frequency response test of the vibrograph proved the practicability of the above idea.抄録全体を表示PDF形式でダウンロード (699K) -
渡辺 一雄, 江口 勇1964 年 3 巻 12 号 p. 941-950
発行日: 1964/12/10
公開日: 2010/10/21
ジャーナル フリーDescribed in this paper is an analysis of the quick-response sampled-data control system and its application to multiple temperature control of industrial furnace. This control system is designed so that it settles for its step response in one sampling for the process of e-Ls/ (1+Tps). The controller consists of a conventional PI controller and sampler. As a result of the analysis, it was found that if suitable parameters are used, the system is able to settle for the response in one or two samplings for step disturbance and in two samplings for step input. These parameters are suitable for practical applications.
Stability margin was calculated for the variation of process gain. The system keeps good stability over the considerably wide range of the gain. Besides, knowledge was obtained concerning the instrumentation by multiple control system, controller characteristics and suitable sampling time.抄録全体を表示PDF形式でダウンロード (2005K) -
志水 清孝1964 年 3 巻 12 号 p. 951-960
発行日: 1964/12/10
公開日: 2011/05/24
ジャーナル フリーPresented in this paper is a time optimal control of chemical reactor which starts up in the shortest time the reactor from an arbitrary initial state to a steady state of desired concentration and temperature. The reactor considered here consists of a continuously and perfectly stirred tank and a piston flow type tube. Theoretical analyses and experiments are both carried out, applying _??_'s Maximum Principle. Optimal solution is obtained for the non-linear mathematical models which express the dynamics of reaction. Digital differential analyzer is used for calculating the optimal switching lines and trajectories. As its result, it is proved that when this optima control is experimentally compared with conventional P. I. D. -mode control system, the former has improved the control efficiency to a larcre eytent.抄録全体を表示PDF形式でダウンロード (1483K) -
窪田 規1964 年 3 巻 12 号 p. 961-965
発行日: 1964/12/10
公開日: 2010/10/21
ジャーナル フリーPDF形式でダウンロード (833K)
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