基于混沌理论的机器嗅觉研究  

Study on machine olfaction based upon chaotic theory

作　　者：范影乐[1] 陈宇[1] 李轶[2] 

机构地区：[1]杭州电子科技大学仪器科学与技术系,浙江杭州310018 [2]浙江大学生物医学工程及仪器学院,浙江杭州310027

出　　处：《浙江大学学报（工学版）》2004年第12期1611-1614,共4页Journal of Zhejiang University：Engineering Science

基　　金：国家自然科学基金资助项目(60302027);浙江省自然科学基金资助项目(602127);浙江省教育厅科研资助项目(20030620).

摘　　要：针对人工嗅觉仿真系统,研究动物嗅觉系统所拥有的高灵敏度和抗强干扰的能力.根据混沌理论,分析了混沌嗅觉系统实现的可能,在此基础上,提出了混沌传感器电路并分析了其测量原理,设计了混沌系统的符号动力学空间,将原混沌空间转换为距离空间,实现了参数空间、轨道空间以及距离空间的映射转换.研究表明,基于混沌理论的机器嗅觉系统具有混沌系统所固有的高灵敏度,同时克服了混沌轨道非一致性、非平衡性以及不稳定性带来的影响,可实现高精确度测量.The properties of extremely high sensitivity and anti-noise of animal olfactory system were studied based on the chaotic olfactory system, which was proved feasible according to chaotic theory. After presenting and analyzing the chaotic sensor circuit, the chaotic space was transformed to distance space via symbol dynamic space. Furthermore, the mapping relationships among parameter space, trajectory space and distance space were established. Simulation results indicated that the chaotic system had extremely high sensitivity to initial condition and parameters. The chaotic olfactory system had high precision and sensitivity; and avoided the influences introduced by the inconsistent, nonequilibrium and unstable characteristics of the chaotic system; and also could be applied to high accuracy measurement.

关 键 词：非线性动力学 混沌 传感器 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]