한국소음진동공학회:학술대회논문집 (Proceedings of the Korean Society for Noise and Vibration Engineering Conference)
- 한국소음진동공학회 1996년도 춘계학술대회논문집; 부산수산대학교, 10 May 1996
- /
- Pages.298-305
- /
- 1996
- /
- 1598-2548(pISSN)
비선형 최적화 기법을 이용한 압전 세라믹의 복소 재료 정수 규명
An Identification Method for Complex-Valued Material Properties of Piezoelectric Ceramics Using Nonlinear Optimization Technique
초록
The common practice for the identification of piezoelectric properties is based on the use of immittance behavior of a resonator with a certain geometry and poling direction. In this paper, a new method is suggested to identify the complex-valued piezoelectric material constants. This method is based on the minimization of differences between the analytical immittance and the experimental measurement of resonator. Non-linear minimization problems are formulated to find out the unknown properties relevant to the resonators. The immittance data used for identification are measured at a number of frequencies which cover the vicinity of resonance frequency and the low frequency region. To illustrate the proposed technique, the complex-valued coefficients are identified for a typical PZT4 ceramic composition.
키워드