• Proceedings of the SAREK Conference
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• 2006.11a
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• pp.48-48
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• 2006

• Proceedings of the KIPE Conference
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• 2000.07a
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• pp.521-524
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• 2000

The switched reluctance motor(SRM) drive system provides a good adjustable speed characteristics. However higher torque ripple are one of the few disadvantages of the SRM drives. The SRM would have to operated with an MMF waveform specified for switching angle and phase voltage. This paper proposes control modelling method using ANN(Artificial Neural Network) and GA(Genetic Algorithm) that are used to control switch-on angles and input voltage.

• Proceedings of the KIEE Conference
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• 1992.07b
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• pp.1095-1099
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• 1992

THIS REPORT PRESENTS THE MAIN CIRCUIT CONFIGURATION AND OPERATING PRINCIPLE ON THYRISTORIZED CURRENT SOURCE INVERTER TO PUT LOAD RESONANCE CONCEPT TO PRACTICAL USE APPLICABLE TO INDUCTION SEAM ANNEALLER, 500KW CAPACITY AND ADJUSTABLE FREQUENCY RANGE OF 1 TO 3KHZ, TOGETHER WITH WAVE OF SIMULATION AND ACTUAL TEST RESULT.

• Industrial Engineering and Management Systems
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• v.4 no.2
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• pp.184-191
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• 2005

In this article we study the feasibility of the Ant Colony Optimisation (ACO) algorithm for finding optimal Kanban allocations in Kanban systems represented by Stochastic Petri Net (SPN) models. Like other optimisation algorithms inspired by nature, such as Simulated Annealing/Genetic Algorithms, the ACO algorithm contains a large number of adjustable parameters. Thus we study the influence of the parameters on performance of ACO on the Kanban allocation problem, and identify the most important parameters.

• 제어로봇시스템학회:학술대회논문집
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• 1996.10b
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• pp.531-534
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• 1996

In this work, we investigate the characteristics of output compliance matrix of a planar 3 degree-of-freedom parallel mechanism when joint compliances are attached to the mechanism redundantly. It is shown by simulation that by attaching redundant joint compliances symmetrically to the mechanism, the translational and rotational compliances can be arbitrarily modulated within some ranges. This property could be effectively used in the control of the compliance characteristics of actively adjustable RCC devices.

• Journal of Institute of Control, Robotics and Systems
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• v.6 no.10
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• pp.918-922
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• 2000

A lab-use home made control valve was made of easily obtainable materials and its performance was examined through a fluid flow experiment. By modifying the hole of a commercial valve a linearly adjustable valve for the flow control is made. The detail of valve assembling and modification is explained for the researchers who intend to employ a similar control valve.

• Bulletin of the Korean Chemical Society
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• v.23 no.11
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• pp.1524-1526
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• 2002

It is very difficult to measure the fluid viscosity at the critical point, there are seldom found experimental values of fluid viscosity at the critical point. Few theories can explain the critical viscosity quantitatively. A theory of viscosity previously proposed by authors10 is applied to the fluid at the critical point. This theory can be simplified as a simple form with no adjustable parameters, allowing for easy calculation. Viscosities at the critical point for some substances have been calculated, and calculated results are satisfactory when compared with the observed values.

• Proceedings of the IEEK Conference
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• 2001.06a
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• pp.409-412
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• 2001

In this paper, we designed Tracking Filter in using frequency hopping system, which can acquire hopping pattern in very short time and track it in the bandwidth of 231 MHz - 292 MHz. This is the RF filter with a high Q value and its center frequency is adjustable through digital signal.

• Journal of the Korean Society of Safety
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• v.13 no.1
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• pp.131-138
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• 1998

This field study was conducted to survey the effect of seating ＆ lighting conditions on work. The results were as follows ; Discomfortable parts of body caused by unsuitable sitting postures on work were low back 52.05%, leg 15.75%, neck 14.38% and arm 9.59%. Work conditions of sitting postures were needed arm rest, back rest of seat and adjustable seat height. Effect of work efficiency by lighting conditions were statistically significant relationship between glaring state of workstation and lighting state.

• Proceedings of the KIPE Conference
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• 2002.07a
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• pp.427-430
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• 2002

The switched reluctance motor (SRM) drive system provides a good adjustable speed characteristics. But driving of SRM is nonlinear changed according to rotor position angle and phase current because of saturation in magnetic circuit, and it is difficult to drive the high efficiency. This paper proposes find point of high efficiency in variable load that are used to control switch-on/off angles and input voltage.