瞳孔控制系统的非线性特性及动态数学模型仿真

作者通过建立非线的动态数学模型，模拟亮度以正弦变化的光刺激下的瞳孔反应波形，并通过模型得到系统非线性的频率特性。模型由线性的传递函数联接非线性振动方程组成。传递函数模拟瞳孔反应波形中对应于输入基波的反应，非线性振动方程模拟瞳孔反应中的高次谱波，固有频率及同步倍频等非线特性。

A Nonlinear Dynamic Mathematical Model of Papillary Control System

A nonlinear dynamic mathematical model has been diveloped to simulate the pupillary responses to the sinusoidal light stimulus. The nonlinear frequency responses of the system is represented in the model which consists of a linear transfer function and a nonlinear oscillation subsystem. The transfer function simulates the fundamental harmonic frequency in pupillary responses. The nonlinear subsystem simulates the high order harmonic frequencies, the inherent frequency and synchronized frequency multiplication in pupillary control system.