Studied the Hilbert transformation of Cosin intergal function Ci(x) and Sine intergal function Si(x).
讨论了余弦积分函数Ci(x)与正弦积分函数Si(x)的Hilbert变换,证明了Ci(x)与-sgn(x)Si(|x|)构成Hilbert变换对,即Ci(x)-isgn(x)Si(|x|)为解析信号,同时求出了Si(x)的Hilbert变换,证明了Si(x)与Ci(x)-Ci(0)构成Hilbert对。
A new practical noise-fraee alternate power supply has been designed and developed by using the voltage stabilization technique of sinusoidal energy dispenser with the voltae stabilization technique of magnetic amplifier.
将正弦能量分配器稳压技术与磁放大器稳压技术相结合，设计研制了一种新型实用的交流净化电源。
