구조물의 진동장 예측 최적센서배치를 위한 유전자 알고리듬 적합함수의 선정

다국어 초록 (Multilingual Abstract)

It is often necessary to predict the vibration patterns of the structures from the signals of finite number of vibration sensors. This study presents the optimal placement of vibration sensors by applying the genetic algorithm and the modal expansion method. The modal expansion method is used to estimate the vibration response of the whole structure. The genetic algorithm is used to estimate the optimal placement of vibration sensors. Optimal sensor placement can be obtained so that the fitness function is minimized in the genetic algorithm. This paper discusses the comparison of the performances of two types of fitness functions, modal assurance criteria(MAC) and condition number(CN). As a result, the estimation using MAC shows better performance than using CN.

참고문헌 (Reference)

1 송민근, "승용연료전지 자동차용 블로워 케이스의 방사소음 저감을 위한 CAE 이용 구조변경에 관한 연구" 한국소음진동공학회 18 (18): 972-981, 2008

2 정병규, "센서최적배치 기법에 의한 원통형 구조물의 진동장 예측" 한국소음진동공학회 24 (24): 381-389, 2014

3 이한울, "공조용 압축기의 가진력 규명 및 배관 진동 예측" 한국소음진동공학회 20 (20): 953-959, 2010

4 정병규, "가속도 측정신호를 이용한 냉장고 홴의 진동원과 방사소음의 예측" 한국소음진동공학회 21 (21): 834-841, 2011

5 Kim, B. K., "Reconstruction of Vibroacoustic Field from the Measured Pressures Using the Boundary Element Method" 50-55, 1995

6 Jung, E. I., "Indirect Force Identification of Air-jet Weaving Machine Infrequency Domain" 238-241, 2006

7 Jung, B. K., "Identification of Vibration-field of a Compressor by using Modal Expansion Method" 635-636, 2011

8 Zbigniew, M., "Genetic Algorithm+Data Structure=Evolution Programs" Springer 1996

9 Jung, B. K., "Estimation of Vibration and Radiated Noise of a Compressor by using Modal Expansion Method" 554-555, 2012

10 Shin, M. C., "Comparison of Various Methods to Obtain Structural Vibration for Vibro-acoustic Noise" 570-574, 2006

11 Lee, J. K., "A Technique to Identify the Structure Borne Noise Sources Related to Structure Vibration using Response Signals" 160-164, 1994