摘要
本文简要介绍了随机共振(SR)原理、研究现状和测量方法,提出了非线性双稳态系统的参数自适应调节方法。根据系统输出与系统参数、输入信号之间的变化规律,得到了系统在不同频率范围的变化趋势,通过多个测量参数检测并做出判断,利用软件控制的方法明显提高了信噪比(SNR),免去了求解复杂的统计微分方程。数值仿真的结果验证了此方法的正确性。
by adjusting the parameters of a nonlinear bistable system. The relation between the system＇s outputs, parameters and inputs is obtained, which shows us a curve for different spectrum. These curves are used to get the system＇s parameters at a certain frequency by several times of detection and judgement. Thus the signal-to-noise ratio （SNR） is enhanced by software control, which provides a new method, not having to solve the complex statistic differential equations. The results of numerical simulation proved its exactness.
出处
《电子测量与仪器学报》
CSCD
2006年第5期21-25,共5页
Journal of Electronic Measurement and Instrumentation
基金
国家自然科学基金资助项目(编号:60572052)。
