一、前言在电磁器件,诸如继电器和变压器中,磁性所引起的振动是产生很多不希望有的噪音的根本原因(Gordon1979),尤其对大功率变压器来说,在噪音隔离和基本电磁辐射研究中比噪音将引起足够大的消耗。在功率变压器芯片中的主要噪音归结为磁致伸缩,为了准确测量单片取向硅钢中的微小振动(峰值磁致伸缩 I. INTRODUCTION In electromagnetic devices such as relays and transformers, the vibration induced by magnetism is the root cause of many unwanted noise (Gordon 1979), especially for high-power transformers in noise isolation and basic electromagnetic radiation studies Than the noise will cause enough consumption. The main noise in the power transformer chip comes down to magnetostriction, in order to accurately measure the minute vibration in the monolithic oriented silicon steel (peak magnetostriction