采用脉冲电声法 (PEA)测量固体电介质中空间电荷的分布,由于测量系统的频带限制引起非线性相位失真和损耗,在测量波形中发生过冲现象,严重影响对空间电荷形成机理及分布的判断.通过对下电极、传感器以及放大器对波形畸变的研究,在信号有效频率范围内 ,建立了信号的过冲纠正模型 ,采用 Matlab软件方法实现信号的补偿 ,对过冲的波形进行重建和纠正,提高了所测波形的准确度 ,最大程度地再现真实的电荷分布信息.处理结果表明:电荷分布波形中的过冲畸变可以得到很好地纠正.
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