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신경회로망을 이용한 평면좌표계형 로보트구동용 교류서보전동기 제어기
김평호(Kim pyoung-ho),서진연(Seo jin-youn),김대곤(Kim dae-gon),이강연(Lee gang-youn),백형래(Baek hyung-lae) 전력전자학회 1999 전력전자학술대회 논문집 Vol.1999 No.7
This paper describes the controller for the improving speed control the AC servo motor. The microprocessor provides an output to the difference in command. The servo system improves the characteristics of speed control. When the motor is<br/> running at the same speed as set by the reference signal, the speed encoder also provides a signal 0 the same frequency. Thus, the microprocessor controlled digital techniques enable to realize the flexible performance and control which was possible with time constant. We can know that PI control using neural networks by 80196 can control efficiently speed of AC Servo motor. Finally expenmental results prove excellent performance of this control system. The system can be adaptable to CNC machine.
토오크 기울기 및 기준전압제어에 의한 유도전동기의 직접토오크 제어
金平鎬(Pyoung-Ho Kim),崔然玉(Youn-Ok Choi),曹錦培(Geum-Bae Cho),白亨來(Hyung-Lae Baek),李相一(Sang-Il Lee) 대한전기학회 2006 전기학회논문지 B Vol.55 No.1
The conventional hysterysis band DTC(Direct Torque Control) strategy have relatively high torque ripple at low speed and variable switching frequency according to motor speed even though it provides a fast torque response with very simple scheme consisted with only two hysteresis band comparators and a switching table for torque and flux control. In this paper, author proposed a new DTC scheme based on the torque slope and reference voltage control. The new scheme can maintain the minimized torque ripple and constant switching frequency. Experimental tests carried out with an 1.5㎾ induction motor drive system show improved dynamic characteristics and prove the feasibility of proposed strategy.
김지훈(Ji-Hoon Kim),변문걸(Bian Wen Jie),이강연(Kang-Yeon Lee),김평호(Pyoung-Ho Kim),조금배,백형래(Hyung-Lae Baek),Geum-Gon Oh 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.4
BIPV(Building Integrated PV) system can expect dual effects that reduce expenses for establishment of PV system by adding new function as outer covering material of building expect producing the electricity. In case of PV(photovoltaic system) there are many generation differences according to the exterior environmental facts(solar cell array, design and installation condition of interactive inverter system). In this paper, we compared constitute factors of 3㎾ BIPV(solar cell module, inverter), operating characteristic and total system characteristic(utilization, generation efficiency, loss fact) and found out long time operating data using a watch instrumentations. By use of long time operating result, compare a totally operating characteristics, and we proposed a next building application of BIPV. BIPV system that is proposed in this paper, was established in Solar Energy research center of Chosun University, composed with system. The objective of this paper, is to provide a efficient BIPV design method through the considerations for the integration of PV system.
김지훈(Ji-Hoon Kim),김평호(Pyoung-Ho Kim),임양수(Yang-Su Lim),조금배(Geum-Bae Cho),백형래(Hyung-Lae Baek),오금곤(Geum-Gon Oh) 한국조명·전기설비학회 2006 한국조명·전기설비학회 학술대회논문집 Vol.2006 No.5월
BIPV(Building Integrated PV) system can expect dual effects that reduce expenses for establishment of PV system by adding new function as outer covering material of building expect producing the electricity. But, there are many generation differences according to the exterior environmental facts(solar cell array, design and installation condition of interactive inverter system) Therefore, it is difficult to optimum design. Consequently in advance design system, we experiment 3㎾ BIPV(Building Integrated PV) generation. We concrete PV system efficient application of variable. BIPV system that is proposed in this paper, was established in Solar Energy research center of Chosun University, composed with system. This research is a basic study for application of building integrated photovoltaic system for builing.
유전자알고리즘을 이용한 교류서보전동기의 PI 제어기에 관한 연구
김환,박세승,최연옥,조금배,김평호,Kim, Hwan,Park, Se-Seung,Choi, Youn-Ok,Cho, Geum-Bae,Kim, Pyoung-Ho 한국조명전기설비학회 2006 조명·전기설비학회논문지 Vol.20 No.7
Recently, G.A studies have studied and demonstrated that artificial intelligence like G.A networks, G.A PI controller. The design techniques of PI controller using G.A with the newly proposed teaming algorithm was presented, and the designed controller with AC servo motor system. The goal of this paper is to design the AC servo motor using genetic algorithm and to control drive robot. And in this paper, we propose a genetic algorithms approach to find an optimal or near optimal input variables for genetic algorithm PI controller. Our experimental results show that this approach increases overall classification accuracy rate significantly. Finally, we executed for the implementation of high performance speed control system. It is used a 16-bit DSP, IMS320LF2407, which is capable of the high speed and floating point calculation. 유전자 알고리즘은 지금까지의 방법으로써는 해결이 곤란한 문제에 대해서 실용상의 최적해를 랜덤하고 빠르게 찾는 방법으로서 사용되어 왔으며, 종래의 검색 알고리즘과 달리 검색 공간 중 하나의 점뿐만 아니라 많은 점을 동시에 고려하기 때문에 국부 최소점(local minima)점에 수렴되는 현상을 극복할 수 있다. 따라서 본 논문에서는 목적 함수에 연속미분조건이 없으며 다수의 변수들을 하나의 문자열로 부호화(coding)함으로써 병렬연산 및 동시최적화가 가능한 유전자 알고리즘을 이용한 PI제어기를 교류서보전동기에 적용하여 작업환경변화에 능동적으로 대응하는 제어방법을 제안하였으며 산업현장에서의 로보트 액추에이터 등의 응용과 정밀제어를 실현하기 위한 교류서보전동기의 드라이버에 적용할 수 있는 제어기를 구현하고자 한다.
최연옥(Choi Youn-Ok),김평호(Kim Pyoung-Ho),한엄용(Han EUDm-Young),이진섭(Lee Jin-Seob),조금배(Cho Geum-Bae) 전력전자학회 1999 전력전자학술대회 논문집 Vol.1999 No.7
A single-phase PWM current source rectifier with a neutral leg is presented and throughly analyzed m this paper. This novel topology is implemented by adding an extra leg a step-down single phase PWM space vector modulation method to reduce the dc output voltage harmonics is proposed. The PWM pattern generation need a digital system As compared with a conventional single-phase PWM rectifier, over 20% improvement of the total harmonics distortion in the output voltage can be obtained. Different SVM techniques are analyzed for this PWM rectifier and simulation result are presented.