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中文摘要：
为了解决PVDF压电薄膜测量低频信号失真大、泄漏快和阻抗匹配难等问题,首先探讨了PVDF的工作机理,继而在频域内使用高效的最小二乘算法设计了一款Hammerstein动态补偿器模型.仿真结果表明,该动态补偿器模型能快速有效地补偿PVDF传感器低频失真,使PVDF压电膜在低频领域的应用成为可能.
英文摘要：
Since the PVDF film has some problems like large distortion, fast leakage for low frequency signal measurement and difficulty in impedance matching, this paper firstly discussed the working mech- anism of PVDF.Then,the post-distortion model has been designed by using the least squares algorithm in frequency-domain.It is confirmed by computer simulation that the Hammerstein post-distorter could efficiently compensate the low-frequency distortion conducted by the PVDF sensors,which makes it pos- sible for PVDF film to be applied in the low frequency domain.
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