http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 강형석 ( Hyeong Seok Kang ) (검색결과 8 건)
- 무료
- 기관 내 무료
- 유료
-
-
-
-
-
제어기 설계를 위한 DC 모터의 모델 파라미터 측정 및 실험적 보정
강형석(Hyeong Seok Kang),신동헌(Dong Hun Shin) Korean Society for Precision Engineering 2014 한국정밀공학회지 Vol.31 No.12
Generally, motor controller design is based on its motor dynamics. Therefore, it requires precise information of its motor dynamics. However, most of the low cost DC motors, which are widely used in industries and academia, are provided without such precise information. Even if it is given, the information is mostly imprecise. Following circumstances require one to calculate the motor dynamics information for oneself. This paper presents a simple method to readily apprehend the DC motor dynamics. First, how to establish the model of DC motor dynamics along with the model parameter identification is presented. Then, the parameter values are finetuned until the simulation response based on the dynamics model is close to the experimental response of the motor. Finally, the controller is designed with the established dynamics model. The validity of the designed controller is confirmed by the comparison of the experiment and simulation.
-
-
건강위해성 평가에 의한 정수용 수처리제의 불순물 관리 기준 설정 방법에 관한 연구
정용 ( Yong Chung ),백영석 ( Young Seog Beck ),권동식 ( Dong Sik Kwon ),이기공 ( Ki Gong Lee ),강형석 ( Hyeong Seok Kang ) 한국물환경학회 2004 한국물환경학회지 Vol.20 No.5
The principle and methodology of risk assessment was applied to establish the quality standard of potential impurities of drinking water treatment chemicals. The impurities(arsenic, lead, cadmium, chromium, mercury, etc.) are regulated as the contained quantity of chemicals in Korea while they are regulated as the quality standard with the idea of 10% of the national safety drinking water standard in U.S.A(NSF) and Japan(JWWA). According to risk assessment of the current standard implemented in Korea, the excess cancer risk of arsenic and lead were determined in around 10^(-5) and the hazard quotient(HQ) of cadmium and chromium were below 10^(-2), respectively. And the standard concentration of the impurities are regulated as much as 2%~6% of the national drinking water quality standard. The values are more enforced rather than the standards in U.S.A(NSF) and Japan(JWWA) regulating the concentration of impurities the 10% of the national drinking water quality standard. We conclude that the impurities standard of drinking water treatment chemicals should be reconsidered comprehensively concerning the national safety drinking water quality standard and risk assessment.
-
ScienceON연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
