交流电压智能传感器的粗信号处理

通过误差LMS法和相关分析法获取了交流电压智能传感器中重要却难测的2个特征参数:有效值和初相位。参照传统的定义测试法,比较并分析了这两种方法。实验表明,这两种方法减少计算量至少一半,测试误差约为传统定义法的三分之一,允许的干扰幅值从信号幅值的5%放宽至15%。实时性、测试精度等高测试性能让其系统简化、成本降低而不需付出任何额外硬件开销或使系统性能降低。

Coarse Signal Processing for AC Voltage Smart Sensor

To obtain voltage RMB and initial phase angle of AC voltage,which are important characteristic parameters but difficult to test,two methods of coarse signal processing for AC voltage smart sensor are proposed based on error LMS and correlation analysis theory.They are compared and analyzed with the traditional coarse signal processing approach according to definition of AC voltage characteristic parameters.Experiments are carried out and the results show that if anyone of the presented methods is utilized,the processing time is reduced by at least 50%,or test error of voltage RMB is decreased about three times,or noise amplitude can be permitted from less 5% to more 15% of signal amplitude.Therefore,improvement of test performance such as real-time and test precision,system simplification,and cost reduction are resulted in without any additional overhead in hardware or other compensation.