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对ＰＺＴ的非线性特性进行了理论和实验研究，给出了施加不同电压时ＰＺＴ机电耦合特性的实验曲线，详细讨论了施加电压过程与所产生的机械变形之间的关系。最后根据实验结果给出了ＰＺＴ用作执行元件时的线性工作区、非线性工作区和截止区
The theoretical and experimental studies on the nonlinear characteristics of PZT are given. The experimental curves of electromechanical coupling characteristics of PZT with different voltages are given. The relationship between the applied voltage and the mechanical deformation is discussed in detail. Finally, according to the experimental results, the PZT is used as the linear working area when the actuator, the nonlinear work area and the cut-off area