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本文论述了为测量电诱应变材料的强电场特性而建立的电诱应变与电滞回线微机控制同步超低频测量系统，该系统的测量温度范围为-50℃～120℃，可以同步测量从静态到慢动态（10HZ）之间不同频率下的铁电、电诱应变特性；提出了一种软件修正电滞回线的方法，通过对替代物（阻容元件）的测量以及诸钛酸铅铜材料的对比实验，表明该修正方法可以得到满意的结果；采用最小二乘拟合的方法，对铁电材料强场下电诱应变的压电分量和电致伸缩分量进行了分离。
In this paper, we discuss the ultra-low frequency (UHF) measurement system based on electrocouple strain and hysteresis loop to measure the strong electric field of electrorheological strain material. The measurement temperature range of this system is -50 ℃ ~ 120 ℃, The ferroelectric and electric induced strain characteristics at different frequencies between static and slow dynamic (10HZ) are proposed. A method of software correcting the hysteresis loops is proposed. By measuring the substitutes (RC elements) and the lead titanate The comparison experiment of copper material shows that the modified method can get satisfactory results. The piezoelectric component and the electrostrictive component of the induced strain in the ferroelectric material are separated by the method of least square fitting.