铁电材料测试系统用电压自动衰减电路  

Automatic Voltage-decaying Circuit Used in System for Measuring Ferroelectric Materials

作　　者：曾亦可[1] 李秀峰[1] 胡勇[1] 肖腊连[1] 林汝湛[1] 张海波[1] 

机构地区：[1]华中科技大学电子科学与技术系,湖北武汉430074

出　　处：《仪表技术与传感器》2005年第9期35-37,共3页Instrument Technique and Sensor

基　　金：国家自然科学基金重大研究计划资助项目(90201028);国家"八六三"计划新材料领域资助项目(2002AA325080);先进制造与自动化技术领域资助项目(2003AA404150)

摘　　要：针对铁电材料测试系统中不同测试信号电压的差别,设计了电压自动衰减电路。重点介绍了自动量程转换电路、峰值AC/DC转换电路、继电器驱动电路和衰减电路的设计。利用配有电压自动衰减电路的铁电材料测试系统测量了PZT铁电体材料样品的电滞回线。测量结果表明,该设计解决了测试电压与采集卡量程的匹配问题,实现了铁电材料测试的自动化。In view of the different voltage used in system for measuring ferroelectric materials, the automatic voltage-decaying circuit was designed. It had been described in detail to design automatic range conversing circuit, peak value AC/DC switching circuit, driving relay circuit and evanescent voltage circuit. The PZT ferroelectric slice sample was measured by the system with the automatic voltage-decaying circuit, and hysteresis loops of the sample was exhibited. The results have shown that the automatic voltage-decaying circuit has entirely solved the problem that measuring range of acquisition card does not correspond to input voltage, as a consequence an automated measurement system has been achieved for measuring ferroelectric materials.

关 键 词：铁电材料 测量 数据采集 电滞回线 

分 类 号：TN273[电子电信—物理电子学]