start-ver=1.4
cd-journal=joma
no-vol=13
cd-vols=
no-issue=
article-no=
start-page=1
end-page=24
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1979
dt-pub=19790305
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Numerical Analysis of Oscillatory Combustion Phenomena generated in A Pipe-Type Combustor
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=In this paper, is proposed a calculating method for the simulation of oscillatory combustion state, and comparisons between estimation results and experimental ones are carried out. With respect to the effects of geometric dimensions of combustion system, and of fueland air-flow rate conditions on characteristics such as an amplitude of oscillation, its fluctuation, and a frequency, a theoretical analysis presents a correct estimation of the phenomena. By use of this analysis, it becomes possible exactly to estimate the changes which take place in the combustion system. On the basis of the quantitative feature of the theoretical results, the influences of the factors such as ignition lag, wall temperature ratio, and heat transmission on the combustion oscillation are studied.
en-copyright=
kn-copyright=
en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=TanakaYutaka
kn-aut-sei=Tanaka
kn-aut-mei=Yutaka
aut-affil-num=1
ORCID=
affil-num=1
en-affil=
kn-affil=Department of Mechanical Engineering
END
start-ver=1.4
cd-journal=joma
no-vol=13
cd-vols=
no-issue=
article-no=
start-page=45
end-page=52
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1979
dt-pub=19790305
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Basic Characteristics of Squarewave Irwerter Circuit with Series R-L Load
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=In this paper, the steady state operations of the
squarewave inverter circuit with a series R-L load are
discussed. The circuit consists of transistors and
feedback diodes. The basic equation is derived from its
equivalent circuit. Solving the basic equation with
steady state conditions, the instaneous value of the
load current i is derived. The period t(2) for which the
current flows from the supply to the load and the
period t(l) for which the current feedbacks through diodes
from the load to the supply are calculated from (i), and
the ratio of t(l) to t(2) is illustrated using power factor
of fundamental wave, pf, as a variable. The ratios of
transistor mean current I(tr), diode mean current I(D),
supply mean current I(s) to the load current I are illustrated using pf as a variable, too. In result, each current ratios to I is shown in simple expressione. The load current can be calculated simply using the coefficient reading off the figure. In addition, it becomes clear from the figure that the load current is scarcely influenced by the harmonic voltage in less than 0.8 of pf. The ratio t(2)/(t(1)+t(2)) calculated in squarewave voltage, shows the limit of pulse width control whose out put voltage is the squarewave.
en-copyright=
kn-copyright=
en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=FujitsukaTakeshi
kn-aut-sei=Fujitsuka
kn-aut-mei=Takeshi
aut-affil-num=1
ORCID=
en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=AgusaToru
kn-aut-sei=Agusa
kn-aut-mei=Toru
aut-affil-num=2
ORCID=
affil-num=1
en-affil=
kn-affil=Department of Electrical Engineering
affil-num=2
en-affil=
kn-affil=Graduate School of Electrical Engineering
END
start-ver=1.4
cd-journal=joma
no-vol=13
cd-vols=
no-issue=
article-no=
start-page=53
end-page=64
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1979
dt-pub=19790305
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=AC Chopper Circuit with Lagging Reactive Load
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=An ac chopper circuit, which chops an ac voltage in a complete cycle for any lagging reactive load, is devised. The circuit is constructed of two ac-switches composed of power transistors and diodes. The load voltage is smoothly controlled by varying the time ratio of ac-switch. Transistors operate in a highfrequency chopping mode, thereby the ripples of the source current and the load current are easily filtered. Furthermore the input power factor of this model is better than that of the thyristor phase control circuit. In this paper, the construction and the driving method of this model are described.
en-copyright=
kn-copyright=
en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=FunabikiShigeyuki
kn-aut-sei=Funabiki
kn-aut-mei=Shigeyuki
aut-affil-num=1
ORCID=
en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=NakanishiSenichiro
kn-aut-sei=Nakanishi
kn-aut-mei=Senichiro
aut-affil-num=2
ORCID=
en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=HimeiToyoji
kn-aut-sei=Himei
kn-aut-mei=Toyoji
aut-affil-num=3
ORCID=
affil-num=1
en-affil=
kn-affil=Department of Electrical Engineering
affil-num=2
en-affil=
kn-affil=Department of Electrical Engineering
affil-num=3
en-affil=
kn-affil=Department of Electrical Engineering
END
start-ver=1.4
cd-journal=joma
no-vol=13
cd-vols=
no-issue=
article-no=
start-page=65
end-page=81
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1979
dt-pub=19790305
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Computer Program for Numerical Evaluation of the work
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=We try to evaluate the manual work numerically from a point of view of the homogeneousness and the simultaneousness of both hands using the results of the micromotion study. The weighted coefficient and the balance index are used to evaluate the homogeneousness of both hands. And the simultaneous index is used to evaluate the simultaneous movement of both hands. It is necessary to make a program in order to use efficiently the method to calculate the indexes or the coefficients. Therefore the computer program of these methods is mentioned in this paper.
en-copyright=
kn-copyright=
en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=UshioJunichi
kn-aut-sei=Ushio
kn-aut-mei=Junichi
aut-affil-num=1
ORCID=
en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=OsakiHirokazu
kn-aut-sei=Osaki
kn-aut-mei=Hirokazu
aut-affil-num=2
ORCID=
en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=KikuchiSusumu
kn-aut-sei=Kikuchi
kn-aut-mei=Susumu
aut-affil-num=3
ORCID=
affil-num=1
en-affil=
kn-affil=Department of Industrial Science
affil-num=2
en-affil=
kn-affil=Department of Industrial Science
affil-num=3
en-affil=
kn-affil=Department of Industrial Science
END
start-ver=1.4
cd-journal=joma
no-vol=13
cd-vols=
no-issue=
article-no=
start-page=83
end-page=93
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1979
dt-pub=19790305
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Computer Program of Line Balancing, Regarding Efficiency and Number of Stations as Variables
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=To assign work elements to the work stations in an assembly or manufacturing line, various computer programs have been developed and used. And it does that the number of stations or the cycle time is even given. But in practice it is desirable to obtain the assignment which shows the highest efficiency of line balancing under all possible combinations of the number of stations and the cycle time. Therefore we propose a computer program of the assignment method in which the efficiency of line balancing, Ebb and the number of stations, NN are regarded as variables. In this method the minimum value (EEb) of efficiency and the constant term (d) by which Ebb is reduced are given previously. And for any COmbination of Ebb (EE