摘要
在双输入端口系统的Volterra级数理论基础上，建立一种新的分析方法．对非线性反馈系统一锁相环进行了分析，求出了Volterra核，得到了锁相环的解析解．
This paper based on the theory of volterra series of double inputssystem, found a new analytical method. We consider the analysis of a nonlinear feedback system--phase locked loops.
