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金洪五 忠州大學校 1984 한국교통대학교 논문집 Vol.17 No.2
This paper, discribes on the position control in the using of the permanent magnet type's stepper motor which are two types : 1) The permanent magnet type. 2) The variable-reluctance type. And for the 3 sequence control of the permanent magnet type's stepper motor : 1) The low power sequence, 2) The normal sequence, 3) The halfstep mode, the another discussed and experimented the limit frequency of the input signals for the induced voltage to the stepper motor composed in hardware for the method which write and put the driving sequence into the 2716 EPROM, select the necessary sequence control method and stop after rotating by the necessary angle.
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最適狀態로 動作하는 스텝모터의 數學的 모델에 關한 考察
金洪五 충주대학교 1983 한국교통대학교 논문집 Vol.16 No.1
A fine positioning technique based on the small displacement that can be obtained around a stepping position by applying differential currents to the motor windings is discused. A linear mathematical model of the motor operating in this fashion is this fashion is derived from the analysis of the motor.
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NEW LOOK AT THE CONSTRUCTIONS OF MULTIWAVELET FRAMES
김홍오,김래영,임재근 대한수학회 2010 대한수학회보 Vol.47 No.3
Using the fiberization technique of a shift-invariant space and the matrix characterization of the decomposition of a shift-invariant space of finite length into an orthogonal sum of singly generated shift-invariant spaces, we show that the main result in [13] can be interpreted as a statement about the length of a shift-invariant space, and give a more natural construction of multiwavelet frames from a frame multiresolution analysis of L2(Rd).
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金洪五 忠州大學校 1985 한국교통대학교 논문집 Vol.19 No.1
Calculation of motion profiles are very impotant in motion control engineering. Precisely calculated motion profiles, acceleration/ deceleration, velocity and displacement profiles for both rotational and linear movements provide necessary data for detailed design of an incremental motion control system.
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金洪五 충주대 산업과학기술연구소 1999 産業科學論文集 Vol.7 No.1
In this paper, we develope the system to measure quantitatively the finger force for O- Ring test, which systemized by M.D. Yoshiaki Omura. The system consists of the finger force transducer using strain gage and S/W to monitoring the strength of force in NoteBook PC. In process of experiment, we check the developed system has the ability to measure the finger force and to distinguish the variation of the finger force according to each experiment parameters, five foods.
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金洪五 忠州大學校 1981 한국교통대학교 논문집 Vol.14 No.2
Registor in miller integrator can be substitued with one capacitor and two switches. This switched capacitor has not only better temperature and linear characteristics, but also smaller capacitor area than registor does. This thesis reparesents the basic principle of S.C. circuit and general methods by which miller intergrator and l st-order low-pass filter is converted into S.C. Especially, it is studied on the method to reduce the phase shift error, and available frequency range is obtained by analyzing errors S.C. Though experiment, it is proved that response characteristics of miller intergrator is similar to that S.C Intergrator, and the ideal value of the elements to convert st-order low pass filter into S.C. filter is determined. And also restriction conditions between switching frequency and bandwidth in S.C low pass filter ate reviewed by analyzing the theoretical and experimental results so that they and be some help in untilization.
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金洪五 忠州大學校 1980 한국교통대학교 논문집 Vol.13 No.2
The industrial market has be come aware of the money that can be saved with the use of power-factor correction capacitors and has given rise to more delta-connected capacitor banks. Customers showing concern for indentifying failures within the banks find that the biggest problem is in binding an easy method of determing the current differencess in unblanced conditions so that relays and/or alarms can be used. This problem can be reduced considerably with methematics. The balanced delta capacitor circuit and calculations are basic but still prove to be time consuming. For the most part, angular displacement is not significant and there is no reason to go though the long arduous tesk of finding the displacement just to obtain in resultant, or current. The formula, [Kvar]/[KV]= Amps, provides the resulant we seek. The same bolds true on the unblanced delta condition and can be easily handled with the formula. Amps=?????????????????????????????????????????????????????????????????????? ? (A[Kvar]/[Kv]²+(B[Kvar]/[Kv]²+(A[Kvar]/[Kv]) (B[Kvar]/[Kv])
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平均 Wiener 필터에 의한 誘發電位 檢出에 關한 硏究
金洪五 忠州大學校 1986 한국교통대학교 논문집 Vol.20 No.1
This paper subscribes the average wiener filtering which can detect the evoked potentials and the detecting system which is implemented with the microcomputer. It is found that the filtering efficiency of the average Wiener filtering improved with the averaging times and the average Wiener filtering is more effective then the averaging for detecting the evoked potential
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金洪五 忠州大學校 1985 한국교통대학교 논문집 Vol.18 No.2
In this paper, a lot of logic circuit is reduced by improving the digital position control system through permanent magnet step motor. The purpose of this paper is to make position control as required angle by 1) The low power sequence, 2) The normal sequence, and 3) The half-step mode using Z-80 micro processor in which logic function is substituted for program.
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Hakki-Coleman 측정방법에서 공진기의 기하학적 결함과 유전율 측정오차와의 상관관계
김홍오 韓國交通大學校 2013 한국교통대학교 논문집 Vol.48 No.-
Effects of geometric imperfections of dielectric resonator on the permittivity measurement using Hakki-Coleman method were analyzed by computer simulation. Firstly, the S21 spectrum of the sample was calculated by HFSS simulation. Then, the relative permittivity was calculated from the TE011 mode resonant frequency. The relative permittivity is varied by 1% when the sample aspect ratio (D/H) is varied. The relative permittivity is varied by 1~5% when the air-gap was introduced in between the dielectric disk and upper conductor. The tilt angle of the conductor plate also affects the relative permittivity.
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