基于虚拟仪器的PCR芯片智能温控系统开发  

Development of intelligent temperature control system for PCR chip based on virtual instrument

作　　者：李丽娜[1,2] 柳洪义[1] 许时扬[1] 

机构地区：[1]东北大学机械工程与自动化学院,辽宁沈阳110004 [2]辽宁科技学院机械工程系,辽宁本溪117000

出　　处：《计算机工程与设计》2009年第5期1223-1227,1298,共6页Computer Engineering and Design

基　　金：国家自然科学基金重大项目(20299030);教育部博士点基金项目(20011045016)。

摘　　要：采用检测电路与加热电路分时交替工作的方式,利用精密恒流源以电阻值测温度值。采用基于模糊切换的Bang-Bang控制、自适应模糊控制、微分先行PID控制相结合的分段复合控制策略,应用虚拟仪器技术,开发了PCR芯片智能温度控制系统。实验结果表明,此温度控制系统可对被控对象进行精确有效的控制,充分满足了使用要求。Using one indirectly temperature measuring method calculating the temperature value according to the resistant measurement value through a precise constant current power by way of the measuring circuit and the heating circuit working in turns and one staged composite control strategy combining bang-bang, self-adaptive fuzzy and previous difference PID control based on fuzzy switching, an intelligent temperature control system for PCR chip is developed with the virtual instrument technology, which get good result in the test and meet the usage requirements enough by controlling the temperature of PCR chip precisely and efficiently.

关 键 词：聚合酶反应 虚拟仪器 恒流源 自适应模糊控制 微分先行PID控制 模糊切换 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]