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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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The Transactions of The Korean Institute of Electrical Engineers
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The Korean Institute of Electrical Engineers
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Volume & Issues
Volume 57, Issue 12 - Dec 2008
Volume 57, Issue 11 - Nov 2008
Volume 57, Issue 10 - Oct 2008
Volume 57, Issue 9 - Sep 2008
Volume 57, Issue 8 - Aug 2008
Volume 57, Issue 7 - Jul 2008
Volume 57, Issue 6 - Jun 2008
Volume 57, Issue 5 - May 2008
Volume 57, Issue 4 - Apr 2008
Volume 57, Issue 3 - Mar 2008
Volume 57, Issue 2 - Feb 2008
Volume 57, Issue 1 - Jan 2008
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Compensation for the Secondary Current of an Air-gapped Current Transformer
Kang, Yong-Cheol ; Zheng, Tai-Ying ; Jang, Sung-Il ; Kim, Yong-Gyun ; Park, Ji-Youn ;
The Transactions of The Korean Institute of Electrical Engineers, volume 57, issue 2, 2008, Pages 149~154
An air-gapped current transformer(CT) has been used to reduce a remanent flux in the core, particularly in the case of auto-reclosure. However, it causes larger transient, ratio and phase errors than the iron-cored CT because of the small magnetizing inductance. This paper proposes a compensation algorithm for the secondary current of the air-gapped CT during the fault conditions including auto-reclosure as well as in the steady-state. The core flux is calculated from the measured secondary current of the CT and inserted into the hysteresis loop to estimate the exciting current. Finally, the correct current is estimated by adding the measured secondary current to the estimated exciting current. Various test results clearly indicate that the proposed compensating algorithm can improve the accuracy of the air-gapped CT significantly and reduce the required core cross-section of the air-gapped CT significantly.
Analysis of Power System Wide-Area Blackout based on the Fault Cascading Scenarios
Park, Chan-Eom ; Kwon, Byeong-Gook ; Yang, Won-Young ; Lee, Seung-Chul ;
The Transactions of The Korean Institute of Electrical Engineers, volume 57, issue 2, 2008, Pages 155~163
This paper presents a novel framework for analysis of power system wide-area blackout based on so called fault cascading scenarios. For a given power system operating state, "triggering" faults or a "seed faults" are chosen based on the probabilities estimated from the hazard rates. The fault probabilities reflect both the load and the weather conditions. Effects of hidden failures in protection systems are also reflected in establishing the fault propagation scenarios since they are one of the major causes for the wide-area blackouts. A tree type data structure called a PS-BEST(Power System Blackout Event Scenario Tree) is proposed for construction of the fault cascading scenarios, in which nodes represent various power system operating states and the arcs are the events causing transitions between the states. Arcs can be either probabilistic or deterministic. For a given initial fault, the total probability of leading to wide-area blackout is estimated by aggregating the individual probability of each fault sequence route leading to wide-area blackout. A case study is performed on the IEEE RTS-79(24 bus) system based on the fault data presented by the North American Electrical Reliability Council(NERC). Test results demonstrate the potentials and the effectiveness of the proposed technique for the future wide-area blackout analysis.
Optimal Capacitor Placement in a Distribution System Considering Lifetimes of Devices
Park, Jong-Young ; Park, Jong-Keun ;
The Transactions of The Korean Institute of Electrical Engineers, volume 57, issue 2, 2008, Pages 164~171
This paper proposes the planning method for placement of capacitors in a distribution system. The main objectives in the planning for capacitor allocation are the reduction of installation costs and electric power loss. In the proposed method, the life time of each device is considered in calculating installation costs, and the optimal operation status of devices is found by genetic algorithm. Then, the optimal numbers and locations are determined based on the optimal operation status. Simulation results in the 69-bus distribution system show that the proposed method performs better than conventional methods.
Fuzzy Inference System Based Distance Relay Algorithm Development for Protecting an Underground Power Cable Systems
Jung, Chae-Kyun ; Oh, Sung-Kwun ; Park, Keon-Jun ; Lee, Jae-Kyu ; Lee, Jong-Beom ;
The Transactions of The Korean Institute of Electrical Engineers, volume 57, issue 2, 2008, Pages 172~178
If the fault occurs on the underground power cable systems, the fault current on the sheath has an influence on all sections of cable because it's returned through earth at the directly grounded point and operation point of SVL(Sheath Voltage Limiter) on each insulated joint box. Therefore, the earth resistance and the operation of SVL have an effect on the zero-sequence current, and then the impedance between relaying point and fault point is increased. That causes the overreach of distance relay. For these reasons, the distance relay algorithm for protecting an underground power cable systems hasn't been developed till now. In this paper, new distance relay algorithm is developed for protecting a underground power cable system using fuzzy inference system which is the one of ACI(Advanced Computational Intelligence) techniques. This algorithm is verified by EMTP simulation of real power cable system, and proves to effectively advance the errors
A Study on Separation Distance Calculation Model for Limitation of Earth Potential Rise Nearby Tower Footings
Choi, Jong-Kee ; Cho, Hwan-Gu ; Kim, Tai-Young ; Lee, Dong-Il ;
The Transactions of The Korean Institute of Electrical Engineers, volume 57, issue 2, 2008, Pages 179~183
In case of a line-to-ground fault at transmission lines, a portion of fault current will flow into the earth through the footings of the faulted tower causing electrical potential rise nearby the faulted tower footings. In this situation, any buried pipelines or structures nearby the faulted tower can be exposed to the electrical stress by earth potential rise. Although many research works has been conducted on this phenomena, there has been no clear answer of the required separation distance between tower footings and neary buried pipeline because of its dependancy on the soil electrical charactersics of the concerned area and the faulted system. In this paper, an analytical formula to calculate the requried sepeartion distance from the faulted tower has been derived.
Development of Fault Location Method Using SWT and Travelling Wave on Underground Power Cable Systems
Jung, Chae-Kyun ; Lee, Jong-Beom ;
The Transactions of The Korean Institute of Electrical Engineers, volume 57, issue 2, 2008, Pages 184~190
The fault location algorithm based on stationary wavelet transform was developed to locate the fault point more accurately. The stationary wavelet transform(SWT) was introduced instead of conventional discrete wavelet transform(DWT) because SWT has redundancy properties which is more useful in noise signal processing. In previous paper, noise cancellation technique based on the correlation of wavelet coefficients at multi-scales was introduced, and the efficiency was also proved in full. In this paper, fault section discrimination and fault location algorithm using noise cancellation technique were tested by ATP simulation on real power cable systems. From these results, the fault can be located even in very difficult and complicated situations such as different inception angle and fault resistance.
Analysis of Common Grounding Effect during the Transient State in Underground Transmission and Distribution Systems
Lim, Kwang-Sik ; Lee, Jong-Beom ;
The Transactions of The Korean Institute of Electrical Engineers, volume 57, issue 2, 2008, Pages 191~197
This paper describes the effect of transient state in underground transmission and distribution lines installed together in the same tunnel. Two systems installed in the same tunnel are operated by the common grounding. This paper analyzed that how much one of the two kinds of systems influences the other systems during the transient state by EMTP/ATPDraw. Single line-to-ground fault and lightning surge were selected in transient state condition. These cases were simulated variously according to the variation of common grounding magnitude, fault location and lightning surge magnitude. It is evaluated that the analyzed results will be used for establishment and operating materials of common grounding in the same tunnel.
The New Residual Current Protective Devices Operating by Resistive Leakage Current
Ham, Seung-Jin ; Hahn, Song-Yop ; Koh, Chang-Seop ;
The Transactions of The Korean Institute of Electrical Engineers, volume 57, issue 2, 2008, Pages 198~207
The conventional Residual Current Protective Devices(RCD, or earth leakage circuit breaker, ELB) operates depending on the total leakage current which is the vector-sum of resistive and capacitive components of a leakage current. However, the electric disaster such as electric shock or fire is mainly caused by the resistive component. Therefore, in this view point, the RCD is more realistic when it operates by the resistive component of the leakage current. In this paper, a new algorithm for measuring the resistive leakage current from the total leakage current is suggested, and is realized to an actual circuit. According to the suggested algorithm, the resistive component of the leakage current can be found by integrating the total leakage current over only a half cycle of the line voltage, and it is realized by using analog switches and resettable integrators. It is confirmed through experiments that the suggested algorithm detects, within maximum average error of 6.74%, the resistive leakage current from the total leakage current, and the RCD employing the suggested algorithm brakes the circuit within the regular interrupt time(30msec).
A Study on the Evaluation Method for Durability Life of Vehicle,s ECU
Kim, Byeong-Woo ; Choi, Beom-Jin ; Cho, Hyun-Duck ; Lee, Do-Hee ;
The Transactions of The Korean Institute of Electrical Engineers, volume 57, issue 2, 2008, Pages 208~213
In order to assess the reliability of the electronics control unit for vehicles, accelerated life test model and procedure are developed. By using this method, failure mechanism and life distribution are analyzed. The main results are as follows : i) the main failure mechanism is degradation failure that is, junction destruction of a semiconductor resin by high temperature. ii) the life distribution of the electronics control unit for vehicles is fitted well to Weibull life distribution and the accelerated life model of that is fitted well to Arrhenius model. iii) at the result of the life distribution, accelerated life test method is developed, and test time for life assessment will be shortened by 5,000 hours by this test method.
ZVT PWM AC-DC Boost Converter with Active Snubber
Kim, Choon-Sam ; Sung, Won-Ki ; Lee, Jung-Moon ; Choi, Chan-Sok ; Kim, Soo-Hong ;
The Transactions of The Korean Institute of Electrical Engineers, volume 57, issue 2, 2008, Pages 214~220
Most of converter system could obtain almost unity power factor and make input current sinusoidal waveform, but they have many problems, such as electromagnetic interference and switching losses caused by switching noise in main switch. To solve these problems in hard switching PFC converter, soft switching converter using a resonant between capacitor and inductor is invented In this paper, advantages and disadvantages of conventional ZVT(Zero-Voltage-Transition) soft switching converter using a auxiliary resonant circuit is discussed. Then Improved ZVT soft switching converter proposed. This improved ZVT converter's operation principal, specific property, design scheme of main are described. From Simulation and experiment results of conventional ZVT soft switching and improved ZVT soft switching converter with active snubber, characteristics of the converter are confirmed.
Precision Position Control of Induction Motors using TCP-IP Network Board
Kim, Hyun-Sik ; Ko, Jong-Sun ;
The Transactions of The Korean Institute of Electrical Engineers, volume 57, issue 2, 2008, Pages 221~228
This paper presents a new method for world wide network motor controlled system. It uses disturbance observer to present high precision position control algorithm to disturbance change, and to apply this to induction motors. It shows that proposed algorithm is strong in induction motor precision control for disturbance change. This system with disturbance observer used deadbeat control, which have high benefit, is good for quick disturbance compensation. To show these effectiveness the whole process is simulated by simulink, and also experimented by DSP6416 with TCP-IP network board.
Development of an Input Impedance Evaluation of the AC-DC Transfer Standard for Low Level AC Voltage Standard
Kwon, Sung-Won ; Jung, Jae-Kap ; Lee, Sang-Hwa ; Kim, Myung-Soo ; Kim, Han-Jun ;
The Transactions of The Korean Institute of Electrical Engineers, volume 57, issue 2, 2008, Pages 229~234
An AC-DC transfer standard(TS) is used for the AC voltage standard in the range of 2 mV to 1000 V below 1 MHz. Micro-potentiometer(
) is used to evaluate the ac-dc transfer difference(ADD) of the TS below 200 mV range. The ADD of the TS were changed by the loading effect caused from the input impedance change of the TS depend on frequency. An input impedance evaluation technique of the TS using
has been developed.
28 nm MOSFET Design for Low Standby Power Applications
Lim, To-Woo ; Jang, Jun-Yong ; Kim, Young-Min ;
The Transactions of The Korean Institute of Electrical Engineers, volume 57, issue 2, 2008, Pages 235~238
This paper explores 28 nm MOSFET design for LSTP(Low Standby Power) applications using TCAD(Technology Computer Aided Design) simulation. Simulated results show that the leakage current of the MOSFET is increasingly dominated by GIDL(Gate Induced Drain Leakage) instead of a subthreshold leakage as the Source/Drain extension doping increases. The GIDL current can be reduced by grading lateral abruptness of the drain at the expense of a higher Source/Drain series resistance. For 28 nm MOSFET suggested in ITRS, we have shown Source/Drain design becomes even more critical to meet both leakage current and performance requirement.
A Study on the Cost and Efficacy Improvement of AC PDP
Shin, Joong-Hong ; Lee, Don-Kyu ; Yoon, Cho-Rom ; Heo, Jeong-Eun ; Park, Chung-Hoo ;
The Transactions of The Korean Institute of Electrical Engineers, volume 57, issue 2, 2008, Pages 239~244
In order to improve cost and efficacy of AC PDP with metal discharge electrodes, a new II-type metal electrodes are suggested. The suggested asymmetrical II-type metal electrode is improved in the luminance, power and efficacy than the conventional metal electrode by 7.5%, 6%, and 14%, respectively. The efficacy of the suggested asymmetrical II-type metal electrode is almost the same with the conventional ITO electrode. Moreover, the address time of the II-type metal electrode is shorter than the conventional ITO electrode.
SLI, AC Breakdown Voltage Characteristics of
Mixtures Gas in Nonuniform Field
Hwang, Cheong-Ho ; Sung, Heo-Gyung ; Huh, Chang-Su ;
The Transactions of The Korean Institute of Electrical Engineers, volume 57, issue 2, 2008, Pages 245~251
Although many studies have been carried out about binary gas mixtures with
, few studies were presented about breakdown characteristics of
mixtures. At present study the breakdown characteristics of
mixtures in non-uniform field was performed. The experiments were carried out under AC voltage and standard lightning impulse(SLI) voltage. Breakdown characteristics were investigated for
mixtures when AC voltages and standard lighting impulse voltage was applied in a needle-plane. The needle-plane electrode whose gap distance was 3 mm were used in a test chamber.
mixtures contained from 0 to 100%
and the experimental gas pressure ranged from 0.1 to 0.5 MPa. The breakdown characteristics of
mixtures in non-uniform field may be influenced by defects like needle-shaped protrusions. In case of slowly rising SLI voltage and AC voltage it is enhanced by corona-stabilization. This phenomena caused by the ion drift during streamer development and the resulting space-charge is investigated. In non-uniform field under negative SLI voltage the breakdown voltage was increase linearly but under positive SLI voltage the breakdown voltage increase non-linearly. The breakdown voltage in needle-plane electrode displayed N shape characteristics for increasing the content of
at AC voltage.
mixture has good dielectric strength and arc-extinguishing properties than pure SF6. This paper presents experimental results on breakdown characteristics for various mixtures of
at practical pressures. We could make an environment friendly gas insulation material with maintaining dielectric strength by combing
which generates a lower lever of the global warming effect.
A Study for the Fault Location of Insulation Defects considering Waveguide Characteristics in GIS
Lee, Seung-Chul ; Jung, Seung-Yong ; Lee, Jae-Ho ; Koo, Ja-Yoon ;
The Transactions of The Korean Institute of Electrical Engineers, volume 57, issue 2, 2008, Pages 252~255
A study for discharge pattern analysis partial and fault location by use of UHF sensors in GIS. However, in the latter case, the results considered the velocity of EM waves modified by the waveguide characteristics of GIS bus bar were not reported yet. In this paper, UHF wide band sensor to detect partial discharge signals have been designed and manufactured to get the widest band characteristic by an application of Fat-Dipole UHF antenna and the result that the transmission velocity of EM waves is 2/3 of the light have been got through the consideration of waveguide characteristics. Also, to verify applicability on site of the developed method, self-designed external type UHF sensor have been installed on operating GIS in Korea Midland Power co. and detected location of the fault. Through the fault have been found at the location, the reliability of the developed method have been proved.
The Design of Path Length Controller in Ring Laser Gyroscope for Attitude Control in the LEO satellite
Kim, Eui-Chan ; Lee, Heung-Ho ;
The Transactions of The Korean Institute of Electrical Engineers, volume 57, issue 2, 2008, Pages 256~260
The Ring Laser Gyro makes use of the Sagnac effect within a resonant ring cavity of A He-Ne laser and has more accuracy than the other Gyros. The Low Earth Orbit satellite for observatory use require the high accuracy Gyro to control and determine the altitude because of the need of payload pointing accuracy. In this paper, The theory of the Path Length Control is explained. The electrical design of Path Length Controller is described. The Design for Path Length Controller is composed of the demodulator, Integrator, Phase shifter, High Voltage Amplifier. We apply the circuit to 28cm square ring laser gyro and get the test results.
Effect of Hump Electrode on the Discharge Voltage of ac PDP with Fence Electrode
Dong, Eun-Joo ; Ok, Jung-Woo ; Yoon, Cho-Rom ; Lee, Hae-June ; Lee, Ho-Joon ; Park, Chung-Hoo ;
The Transactions of The Korean Institute of Electrical Engineers, volume 57, issue 2, 2008, Pages 261~267
One of the most important issues in fence-type PDP is low luminance and luminous efficiency. To improve luminance and luminous efficiency, new sustain electrode structure which contains long discharge gap is necessary. However, it causes rise of firing voltage. In this paper, a new fence electrode structure is proposed in order to solve these problems. To drop the firing voltage, tow hump shaped electrodes is added on the main discharge electrode, and distance between two humps is controlled. The experimental results show that the test panel with the narrow horizontal gap(40um) between two humps shows low firing voltage by 17V compared with 80um gap in spit of similar luminance and luminous efficiency.
Estimation of Fault Location on a Power Line using the Time-Frequency Domain Reflectometry
Doo, Seung-Ho ; Kwak, Ki-Seok ; Park, Jin-Bae ;
The Transactions of The Korean Institute of Electrical Engineers, volume 57, issue 2, 2008, Pages 268~275
In this paper, we introduce a new method for detecting and estimating faults on a power line using the time-frequency domain reflectometry system. The system rests upon time-frequency signal analysis and uses a chirp signal which is multiplied by Gaussian envelope. The chirp signal is used as a reference signal, and we can get the reflected signal from a fault on a wire. To detect and estimate faults, we analyze the reflected signal by Wigner time-frequency distribution function and normalized time-frequency cross correlation function. In this paper we design an optimal reference signal for power line and implement a system for estimating fault distance on a power line with the TFDR implemented by PXI equipments. This approach is verified by some experiments with HIV 2.25mm power lines.
Development of Diagnosis System Adopted Intelligent Smart Junction Box for Improving Vehicular Power Safety
Jeong, Min-Soo ; Kim, Mun-Gyeom ; Park, Young-Hoan ; Bang, Soon-Young ;
The Transactions of The Korean Institute of Electrical Engineers, volume 57, issue 2, 2008, Pages 276~285
These days the automobile industry, which has rapidly progressed, has been an indispensable part in social and economic activities as well as its research and development have been activated in response to various needs of consumers and markets. The second and third generation control system, getting count on safety and convenience differently than early circuits, cause the hypertrophy of wire harness. The J/Box(Junction Box), which distributes power and wires, was developed to solve the problem. As vehicles have been better in quantity and intelligence, however, environment-friendly electric apparatus system has continuously increased and ITS(Intelligent Transport System) has been introduced in earnest. In result, wires got complicated and multilateral and also there has been a stronger probability that vehicles are out of order due to various problems including mechanical failure. In this study, ISJB(Intelligent Smart Junction Box) was introduced to solve the problem. The diagnosis system was applied to prevent the overload and short of ISJE. Also, the state of vehicles displayed so that drivers monitor it in motion. Likewise error data are saved in the memory so that such data can be analyzed retrospectively. The busbar was adopted in to the main power terminal and the part of power pattern was coverd by lead. Because ISJB is more sensitive to heat in comparison to the busbar type J/Box. With regard the circuits related with safe, alternative circuits were set up in order that electronic devices may be normally operated even when an error arises. ISJB is expected to improve the safety and quality of vehicles.
Development of a Personal Navigation System Including Activity Monitoring Function
Kang, Dong-Youn ; Yun, Hee-Hak ; Cha, Eun-Jong ; Park, Chan-Sik ;
The Transactions of The Korean Institute of Electrical Engineers, volume 57, issue 2, 2008, Pages 286~293
The design and implementation of a personal navigation system including activity monitoring function is given in this paper. The system consists of a 3 dimensional MEMS accelerometer, digital compasses and ZigBee communication. An accelerometer and digital compasses are used to compute the position and activity. The obtained position and activity information is transmitted to a fixed beacon via ZigBee. At the same time, activity information is stored in the personal navigation system to a batch analysis program. The step detection algorithm which is robust to attaching location is proposed. Also two digital compass error compensation algorithms are proposed to find more precise headings. The experiments with a real system show that the activities of users and continuous locations less than 1.5m errors are obtained after 80m walking.
Super-Resolution Image Processing Algorithm Using Hybrid Up-sampling
Park, Jong-Hyun ; Kang, Moon-Gi ;
The Transactions of The Korean Institute of Electrical Engineers, volume 57, issue 2, 2008, Pages 294~302
In this paper, we present a new image up-sampling method which registers low resolution images to the high resolution grid when Bayesian super-resolution image processing is performed. The proposed up-sampling method interpolates high-resolution pixels using high-frequency data lying in all the low resolution images, instead of up-sampling each low resolution image separately. The interpolation is based on B-spline non-uniform re-sampling, adjusted for the super-resolution image processing. The experimental results demonstrate the effects when different up-sampling methods generally used such as zero-padding or bilinear interpolation are applied to the super-resolution image reconstruction. Then, we show that the proposed hybird up-sampling method generates high-resolution images more accurately than conventional methods with quantitative and qualitative assess measures.
Ubiquitous Home Network Service Using Mobile Handset and ZigBee
Bae, Sung-Han ;
The Transactions of The Korean Institute of Electrical Engineers, volume 57, issue 2, 2008, Pages 303~306
In this paper, we propose a home-networking service using mobile phone and ZigBee module. Recently, ZigBee is widely used for various applications due to its characteristics. Especially, it is generally adopted for home network services. We propose a new home network service model using mobile phones. In the proposed architecture, the mobile phones are connected to conventional home network appliances using ZigBee dongle. Also, several servers are implemented for service management. We implement the whole components of the proposed architecture and show the validity of the proposed method. With the proposed service structure, it is expected to provide various ubiquitous services for the user.
A New Defect Inspection Method for TFT-LCD Panel using Pattern Comparison
Lee, Kyong-Min ; Jang, Moon-Soo ; Park, Poo-Gyeon ;
The Transactions of The Korean Institute of Electrical Engineers, volume 57, issue 2, 2008, Pages 307~313
In this paper, we propose a novel defects inspection algorithm for TFT-LCD panels. We first compensate the distorted image caused by the camera distortion and the uneven illumination environment using the least squares method and the bezier surface. We find a starting point of each pattern for restricting each pattern. A clean image is compared to each pattern to find defects using modified PCSR-G algorithm. The simulation example shows that our algorithm not only inspects the defects well, but also is robust to the 1-pixel error.
Numerical Analysis of Electric Field Distribution Induced Inside a Realistic Brain Model Considering Conductivity Heterogeneity
Kim, Dong-Hun ; Lee, Il-Ho ; Won, Chul-Ho ;
The Transactions of The Korean Institute of Electrical Engineers, volume 57, issue 2, 2008, Pages 314~319
In this paper, the electric field distribution induced inside the brain during Transcranial Magnetic Stimulation(TMS) has been thoroughly investigated in terms of tissue heterogeneity and anisotropy as well as different head models. To achieve this, first, an elaborate head model consisting of seven major parts of the head has been built based on the Magnetic Resonance(MR) image data. Then the Finite Element Method(FEM) has been used to evaluate the electric field distribution under different head models or three different conductivity conditions when the head model has been exposed to a time varying magnetic field achieved by utilizing the Figure-Of-Eight(FOE) stimulation coil. The results show that the magnitude as well as the distribution of the induced field is significantly affected by the degree of geometrical asymmetry of head models and conductivity conditions with respect to the center of the FOE coil.
DNA Inspired CVD Diagnostic Hardware Architecture
Kwon, Oh-Hyuk ; Kim, Joo-Kyung ; Ha, Jung-Woo ; Park, Jea-Hyun ; Chung, Duck-Jin ; Lee, Chong-Ho ;
The Transactions of The Korean Institute of Electrical Engineers, volume 57, issue 2, 2008, Pages 320~326
In this paper, we propose a new algorithm emulating the DNA characteristics for noise-tolerant pattern matching problem on digital system. The digital pattern matching becomes core technology in various fields, such as, robot vision, remote sensing, character recognition, and medical diagnosis in particular. As the properties of natural DNA strands allow hybridization with a certain portion of incompatible base pairs, DNA-inspired data structure and computation technique can be adopted to bio-signal pattern classification problems which often contain imprecise data patterns. The key feature of noise-tolerance of DNA computing comes from control of reaction temperature. Our hardware system mimics such property to diagnose cardiovascular disease and results superior classification performance over existing supervised learning pattern matching algorithms. The hardware design employing parallel architecture is also very efficient in time and area.