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지준근,임영하 순천향대학교 부설 산업기술연구소 2002 순천향 산업기술연구소논문집 Vol.8 No.1
In this paper the micro mouse system with high stability is proposed. Hardware system of micro mouse is configured by PCB layout and artwork after simplifying the circuits using EPLD(Erasable Programmable Logic Device). Also, advanced motion algorithm using new motion table is introduced. As a result of manufacturing micro mouse and carrying out motion experiment, it is confirmed that the reduction of motion period in micro mouse is depend on not maximum speed but acceleration and deceleration method. Therefore, it is shown that configuration and application of proposed motion table in micro mouse system can improve conventional motion algorithm.
지준근 순천향대학교 부설 산업기술연구소 1998 순천향 산업기술연구소논문집 Vol.3 No.3
This paper deals with the multiple method for large capacity inverter system. To enlarge the capacity of inverter system and to reduce the current ripples on inverter output side, two or more inverters are operated in parallel. Up to now six step inverts and sinusoidal PWM inverts have been developed for the parallel operation of inverts. In this paper, the parallel operation using space vector PWM inverts is considered, By using space vector PWM, many adventages such as reduced current ripple and reduced ripple torque can be obtained. Moreover, the inverter output current ripples can be greatly reduced by shifting the switching state of the two of more inverters effectively. The experimental results verifies the effectiveness of the proposed method.
통신 기지국 전원용 주파수 제어형 직렬공진형 컨버터 시스템
지준근,임영하 한국산학기술학회 2003 한국산학기술학회 학술대회 Vol.- No.-
본 논문에서는 통신 기지국용 전원으로 사용할 수 있는 주파수 제어 직렬 공진형 컨버터의 동작 원리 및 특성을 살펴보고 실제의 전원 시스템을 설계 및 제작하려고 한다. 주파수 제어 공진형 컨버터 시스템은 POSR(Parallel Output Series Resonant) 형태이기 때문에 부하에 강인하고 주파수를 제어함으로써 입력전압의 변화에도 안정된 출력을 보여준다. 실제 시스템 제작에 앞서 먼저 시뮬레이션을 통한 시스템의 분석을 하였고 시뮬레이션 프로그램은 ACSL(Advanced Continuous Simulation Language)을 사용하였다.
변비 및 변실금 환자를 위한 휴대가 가능한 가정용 바이오피드백 치료기
지준근,차귀수,이문호 순천향대학교 부설 산업기술연구소 2001 순천향 산업기술연구소논문집 Vol.7 No.1
In this paper, biofeedback anal spincter control system is designed and implemented. This system is useful for training and cure anal spincter for idiopathic chronic constipation patient or idiopathic chronic and nerogenic fecal incontinence patient. This paper includes anal spincter EMG amplifier and signal processor in order to amplify and detect anal spincter EMG signal of several microvolts without distortion. It is also includes monitoring system to confirm anal spincter EMG signal using LED display and speaker sound output.
직렬통신과 Visual Basic을 이용한 Home Automation System
지준근,이광수 순천향대학교 부설 산업기술연구소 2002 순천향 산업기술연구소논문집 Vol.8 No.1
In this paper, hardware and control program for home automation system are developed. 9051 microcontroller is used in the hardware part. Multiple communication algorithm among plants is most important in the control program. Also image transfer method using USB port of IBM PC is used in this system. The DLL program needed for image transer is programmed by C++ and the entire control program is programmed by Visual Basic. Hardware part of the system is composed of multiple drivers according to each plant and some drivers have 8051 microcontroller for multiple communication. Data flow among plants is displayed on monitor of PC and transferred by serial communication with PC.
단상 인버터의 위상변위 제어 방식에 의한 오존발생 시스템의 전원장치 개발
지준근,윤기현 순천향대학교 교수학습개발센터 2005 순천향 산업기술연구소논문집 Vol.11 No.1
In this paper, power supply for ozone generating system is explained. Output voltage and frequency are controlled by phase displacement control of single phase inverter using ATmega128. The values of desired output voltage and frequency can be set using keypad and can be displayed using LCD. Actually, power supply is designed and manufactured. Through the experiments, the performance of output voltage and frequency control is verified.
Low Cost and High Performance Single Phase UPS Using a Single-Loop Robust Voltage Controller
지준근,구대관,임승범 전력전자학회 2015 JOURNAL OF POWER ELECTRONICS Vol.15 No.3
Uninterruptible Power Supplies (UPSs) can be largely divided into the passive-standby, line-interactive and double-conversion methods. This paper proposes a double-conversion UPS with a low cost and high performance. This single phase UPS uses a single-loop robust voltage controller and 1-switch voltage doubler strategy PFC. The proposed UPS is composed of a single phase PFC, a half-bridge inverter, a battery charger and a battery discharger. Finally, the validity of proposed UPS was verified by various experimental tests.
고속설계 시스템을 이용한 AC 서보시스템의 속도 제어기 설계
지준근,이동민 순천향대학교 교수학습개발센터 2005 순천향 산업기술연구소논문집 Vol.11 No.1
In this paper the design of speed observer and controller for AC servo system by rapid design system(RG-01D) using DSP of Realgain company is introduced. "AC Servo_designer" system, including CEMTool/SIMTool S/W, RG-DSPIO Board, AC servo driver and AUTOTool program, is used in this research. Because "AC Servo-Designer" system can use SIMTool blocks to design and implement various controller in short time, speed observer and controller for AC servo system is easily designed and implemented according to control objectives.
지준근,임영하 순천향대학교 부설 산업기술연구소 2003 순천향 산업기술연구소논문집 Vol.9 No.1
In this paper new control strategy of series resonant converter system for control power supply is suggested. Frequency controlled series resonant converter system is robust to load variations because it is POSR(parallel output series resonant) type. And it provides stable output voltage by changing switching frequency to input voltage variations. Firstly, operation analysis about suggested series resonant converter system was carried. Then simulations using ACSL(Advanced Continuous Simulation Language) and experiments to actual system were carried to prove characteristics of suggested system.