http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김용재(Y. J. Kim),강원구(W. G. Kang),김수겸(S. K. Kim),김지석(J. S. Kim),김준영(J. Y. Kim),신동준(D. J. Shin),윤삼손(S. S. Yoon),류시양(S. Y. Ryu) 한국전산유체공학회 2014 한국전산유체공학회 학술대회논문집 Vol.2014 No.5
The size of electronic devices is becoming miniaturized and performances are becoming more and more high function. So power consumption of the product is greatly increased. And, in the progress of product development, thermal design is a very important task. In the thermal design process, we need many climate chambers to measure temperature of electronic components and check operation of the products under cold and hot environments. However, the climate chamber needs expensive maintenance cost and occupies large space. This is a huge burden to the company. Most developers replace high-temperature tests by low cost room temperature tests. There is an issue how much value the developers add to the results of room temperature tests for converting to the results of high temperature tests. In this paper, some results based on tests and thermal simulation analyses have been reported to suggest the value.
Software RDC를 이용한 One-chip DSP BLDC Motor 제어에 관한 연구
김용재(Y. J. Kim),조정목 (J. M. Cho),권경엽(K. Y. Kwon),조중선(Joongseon Joh) 한국정밀공학회 2004 한국정밀공학회 학술발표대회 논문집 Vol.2004 No.10월
The Resolver usually used in industry is the absolute angle analog sensor that must be in order to driving BLDC (brushless DC) motor, and it needs RDC(Resolver-to-Digital converter) for changing the output signal to digital to be applied to the SVPWM(Space Vector Pulse Width Modulation) algorithm. Commonly used S/W RDC needs trigonometric function. What it takes a lot of calculation time of processor is gotten at weak point. In this paper, S/W RDC is realized except trigonometric functions as a result of feedback resolver outputs after filtering using FIR filter. thus, processing time is reduced. So, One-chip DSP Controller operating the Vector Control, RDC, and SVPWM can be designed.