开关式恒流源双向充电获取LVDT的互感特性  

Constant current source two-way charging by switching obtain mutual inductance characteristics of LVDT

作　　者：欧阳斌林[1] 辛苗[2] 东忠阁[1] 果莉[1] 陈卓[1] 

机构地区：[1]东北农业大学电气与信息学院,哈尔滨150030 [2]广东机电职业技术学院,广州510550

出　　处：《东北农业大学学报》2013年第11期137-142,共6页Journal of Northeast Agricultural University

基　　金：东北农业大学科技创新项目

摘　　要：文章采用开关电路以恒流源向互感的原线圈充电,经过二极管放电,在稳定放电期间,定时测量稳定放电时间和副线圈的开路电压来测量互感值。把此方法改成双向充电用在差动变压器(LVDT)上分析互感特性。设计试验电路,讨论捕获采样副线圈脉冲电平方法,获取并分析不同条件下的互感特性曲线。试验证明LVDT需要在中点调平衡。This paper introduced the mutual inductance measurement which was charging with the constant current circuit and discharging through a diode by switching two-winding transformer, and timing during stable discharge of primary coil and sampling the open circuit voltage of secondary coil, and took it to LVDT charging bidirectionaly for mutual inductance characteristics. It also discussed the principle and designed the test circuit, focuses on the capture sampling pulse the height of the secondary coil, acquire and analysis the mutual inductance characteristics under different conditions. Experiments and data analysis proved the LVDT must be balanced, at the center of displacement.

关 键 词：LVDT 互感测量 电感 开关电感 脉冲电平采样 

分 类 号：TM934.43[电气工程—电力电子与电力传动] TM930.1