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Volume 2, Issue 2
Displaying 1-8 of 8 articles from this issue
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[in Japanese]1963 Volume 2 Issue 2 Pages 81-90
Published: February 10, 1963
Released on J-STAGE: October 21, 2010
JOURNAL FREE ACCESSDownload PDF (2107K) -
Yoshitoshi MIYAZAKI, Hisao SUZUKI1963 Volume 2 Issue 2 Pages 91-98
Published: February 10, 1963
Released on J-STAGE: October 21, 2010
JOURNAL FREE ACCESSIn steel industry, where a large amount of Blast Furnace Gas and Coke Oven Gas are produced and consumed, the calorie control of these gases are very important from the view point of the combustion control and quality control of steel products.
The coke rate of Blast Furnace has decreased with improvement of the furnace operation and the heating value of BFG has decreased to less than 900kcal/Nm3. Consequently, the conventional calorimeter has become useless for its original purpose. Moreover, the conventional one is not adequate for use in the calorie control because of its time lags, maintenance difficulties, poor reliabilities and difficulties in connection with an instrument.
Described in this report are the development of a new calorie sensor using a thermocouple and the calorie control of BFG with this sensor.
This sensor can be used to measure and to control highcalorie gases such as city-gas and other chemical process gases.View full abstractDownload PDF (2962K) -
Toshie TAKAHASHI1963 Volume 2 Issue 2 Pages 99-114
Published: February 10, 1963
Released on J-STAGE: October 21, 2010
JOURNAL FREE ACCESSThis is a companion paper of the author's “Theoretical Treatment of Fluid Handling Process from the Viewpoint of Nonlinear Circuit”, appeared in AUTOMATIC CONTROL, Vol.8, No.1 (1961). In the present paper some fundumental concepts, general theorems, and their applications in hydraulic netwowk theory are introduced, together with a technical development in the non-inte racting flow or pressure control of branched or confluent pipe line. The contents are so comprehensive that the synopsis may be preferably replaced by the paragraph titles.
1. Introduction and Nomenclature 2. 2-terminal Characteristics of Hydraulic Network Elements
3. Analytical Dynamics of Hydraulic Network 4. Equilibrium Point of Hydraulic Network
5. Analysis of Branched and Confluent Pipe Lines 6. Equilibrium Point of Confluent System
7. Non-interacting Flow Control of Confluent System 8. Compound Control of Single Pipe Line
9. Non-interacting Pressure Control of Branched System 10. Concluding RemarksView full abstractDownload PDF (5239K) -
Masami ITO1963 Volume 2 Issue 2 Pages 115-122
Published: February 10, 1963
Released on J-STAGE: October 21, 2010
JOURNAL FREE ACCESSBy means of phase plane analysis, theoretical study has been made on the step responses of discontinuous damping servomechanism devised by the author, nonlinear damping servomechanisms, Flügge-Lotz's nonlinear control system, Tsuchiya's control system with two constant controllers and positive-negative feedback control system. The conclusions obtained from the study may be summarized as follows:
1) Discontinuous damping servomechanism and Flügge-Lotz's control system have step responses favourable for any initial condition.
2) In the first and third quadrants where e and e are of the same sign, linear system has better responses than in nonlinear damping servo-systems.
3) Tsuchiya's control system has the excellent step responses when initial values of output and output derivative are zero, but it is not always so if initial values of output derivative are not zero.
4) In the P-N control system, which has the excellent step responses for all initial conditions, nonlinear controller is complex.View full abstractDownload PDF (1230K) -
Ippei HATAKEYAMA, Ki-ichi SAGAWA1963 Volume 2 Issue 2 Pages 123-130
Published: February 10, 1963
Released on J-STAGE: October 21, 2010
JOURNAL FREE ACCESSIn an effort to analyze and control the performance of biological autonomic system, a variety of control elements were introduced into appropriate sites along varied autonomic reflex loops as follows:
(1) The systemic arterial pressure regulatory reflex loop involving the carotid sinus pressoreceptor was opened at the systemic arterial pressure-intrasinual pressure coupling in order to introduce a pressure amplifier with variable gain and/or a delay element with variable length. With such control elements in the loop, the arterial pressure was satisfactorily stabilized against certain disturbances, but with certain kinds of the gain and delay factors, it was rendered unstable enough to precipitate into self-oscillation.
(2) Based on the servoanalysis of the cerebral ischemic pressor response, a bias pressure generator was inserted into the systemic arterial pressure-oerebral perfusion pressure coupling to bias the latter from the former so that the response may lapse into feedback oscillation. Replacement of the bias pressure generator by the Starling's resistance also caused a cycling of different nature.
(3) The closed loop respiratory reflex involving the lung stretch receptor and the vagal afferent impulses was opened by severing the vagi. Afferent stimulation given to the cut end with preliminarily set cycle and the same stimulation synchronized with the respiratery cycle provided open and closed loop controlling procedures of the respiration respectively.View full abstractDownload PDF (1813K) -
Toshiyuki MATSUURA1963 Volume 2 Issue 2 Pages 131-138
Published: February 10, 1963
Released on J-STAGE: October 21, 2010
JOURNAL FREE ACCESSDescribed is a device which converts the volumetric flow to the pulse signal with the recurrency frequency proportional to the volumetric flow rate. The device is composed of a magnetic flow transmitter and a drag cup type induction tachometer. Through the experiments, the shaft speed of the induction tachometer very accurately and quickly followed up A. C. signals transmitted from the magnetic flow transmitter, by means of the feedback control technique; where the shaft rotation generates the pulse signal in a simple optical way.
The output errors of the induction tachometer due to frequency change of the source supply and ambient temperature change have been successfully reduced by a new methode without using any additional compensating systems. Besides, the qua drature fundamental noises coming from the magnetic flow transmitter and the induction tachometer have been automatically eliminated from the high gain amplifier by using a circuitry of several siliconcarbide varistors.
The device combined with a magnetic flow transmitter of 600 mm. inner diameter was tested for eighteen cases of water flow experiments and the difference between the value of total flow measured directly and that indicated by this device was always less than 0.5%.View full abstractDownload PDF (3139K) -
[in Japanese]1963 Volume 2 Issue 2 Pages 140-143
Published: February 10, 1963
Released on J-STAGE: October 21, 2010
JOURNAL FREE ACCESSDownload PDF (2052K) -
[in Japanese]1963 Volume 2 Issue 2 Pages 144-147
Published: February 10, 1963
Released on J-STAGE: October 21, 2010
JOURNAL FREE ACCESSDownload PDF (560K)
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