中文摘要：

压电陶瓷（PZT）致动器在飞行器的主动振动与噪声控制等航空、航天领域中得到了广泛应用,其电特性和功率损耗的确定对于优化系统结构和设计有效驱动电源均有至关重要的作用。据此,该文提出了一种预测PZT功率损耗的实验方法。该方法通过理论分析与实验测试估计PZT的电容量、介电损耗角正切及功率损耗,最终得到它们与驱动电压峰值和频率的非线性函数关系。这种功率损耗的预测能在主动振动控制领域中为设计压电陶瓷驱动电源提供指标依据。

英文摘要：

In recent years,the piezoelectric ceramic（PZT） actuators are widely used in active vibration and noise control of aircraft and aerospace applications,and the determination of its electrical properties and power loss has a vital role for optimizing the system architecture and designing an effective drive power.Accordingly,an experimental method to predict the power loss of the PZT is proposed.In this method,the capacitance,dielectric loss tangent and power loss of PZT can be estimated by theoretical analysis and experimental testing,and the nonlinear functional relations among these parameters and the applied voltage peak and frequency can be obtained finally.They are functions of both applied peak voltage and driving frequency.The prediction of power loss can be applied to the active vibration control and provide the basis for the design of piezoelectric ceramic drive power.