한국소음진동공학회:학술대회논문집 (Proceedings of the Korean Society for Noise and Vibration Engineering Conference)
- 한국소음진동공학회 2000년도 추계학술대회논문집
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- Pages.605-611
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- 2000
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- 1598-2548(pISSN)
현장 불평형 응답을 이용한 로터-베어링 시스템의 매개변수 규명 연구
A Study on Identifying Dynamic Characteristic Parameters of Rotor Bearing Systems Using Field Measurement Data of Unbalance Responses
- 발행 : 2000.11.16
초록
Presented in this paper is a new method of identifying the critical speed of rotor-bearing systems without actually reaching at the critical speed itself. Using the method, it is not only possible to calculate the critical speed by measuring a series of rotor responses at much lower rotating speeds away from and without reaching at the critical speeds but also the damping ratio and eccentricity of the system can be identified at the same time. Two types of test rotors were tested on the Rotor Dynamics Test Facility at the Rotordynamics Lab., KIMM, and the theory has been confirmed experimentally. The method can be adopted to monitor changes of the dynamic characteristics of critical rotating machinery before and after overhauls, repairs, exchanges of various parts, or to detect trends of direction of subtle changes in the dynamic characteristic parameters over a long periods of time.
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