弱光反馈水平下光回馈传感器的模拟行为模型

Behavioral model of an optical feedback sensor based on weak optical feedback

反射或散射光光强的变化及系统的非线性都将导致干涉模型的变化,从而造成干涉信号波形的变化。这些变化将增加测量过程中数据处理的复杂性。本文基于Cadence公司的orcad10.5提出一种模拟行为模型来描述弱光反馈水平下光回馈自混合干涉现象,该方法减化了光回馈自混合干涉现象中非线性方程的求解过程。不仅建立了弱光反馈水平下光回馈传感器的模拟行为模型,搭建了软硬件结合的平台,同时也提供了一种对目标位移、速度、距离等进行测量的新的数据处理方法。

The self-mixing model are changed when changes of both light intensity of the optical beam which is reflected or scattered and the nonlinear of the system,then makes the change of signal waveform.All of these make signal processing rather challenging.In this paper,a new behavioral model of weak optical feedback based on orcad10.5 of cadence is proposed to represent the optical feedback self-mixing phenomenon and to simplify the solution of nonlinear equations involved in this problem.At the same time,it not only established an behavior model of the optical feedback sensor based on weak feedback and built a platform to combine hardware and software,but also develop new methods for signal processing of target measurements such as displacement,velocity and distance measurements.