一、前言以压电晶体为换能元件的加速度计在振动测试中应用十分普遍。因它在自身重量、频响范围、稳定性、抗冲击能力以及对外界温度的敏感性等重要指标方面,都是比较理想的。但在测试以高振级的高频和低振级的低频为特征的振动参数时,往往零漂严重,加速度计也常 I. INTRODUCTION Accelerometers with piezoelectric crystals as transducers are very common in vibration tests. Because of its weight, frequency response range, stability, impact resistance and sensitivity to the outside world and other important indicators, are more ideal. However, when testing vibration parameters characterized by high-frequency, high-frequency and low-frequency low frequencies, the zero drift tends to be severe and accelerometers are also often