中国医疗设备2017，Vol.32Issue(10)：33-38,6.DOI:10.3969/j.issn.1674-1633.2017.10.009
基于Smith-PID的数字PCR检测仪液路双闭环比值控制系统的设计
Design of Double Closed Loop Ratio Control System of the Digital PCR Detector Based on Smith-PID
陈庆明 1刘经龙 2李冬梅1
作者信息
- 1. 广东顺德工业设计研究院(广东顺德创新设计研究院) 精密仪器部,广东 佛山 528311
- 2. 广东顺德工业设计研究院(广东顺德创新设计研究院) 电子信息部,广东 佛山 528311
- 折叠
摘要
Abstract
The precision, speed and stability of the liquid output of the liquid system are the basis of the function of the digital PCR detector. In order to solve the problem of large resistance and large delay in the liquid circuit system of the digital PCR detector, the structure of the double closed loop control system based on the Smith-PID algorithm was proposed. A double closed loop ratio control system was constructed according to the injection pump, the control object model and Smith controller principle. In addition, modeling and simulation was performed on the system for the use of Simulink, and a better response curve was obtained compared to the traditional PID. In the digital PCR detector liquid circuit system verification, we found that compared with the traditional double closed loop liquid path of PID control, the settling time of the double closed loop ratio control system Smith-PID control samples reduced 2/3, dilution adjustment time reduced 1/3, the steady-state error reduced 8％. In conclusion, the Smith-PID control algorithm can improve the rapidity, accuracy and stability of the flow output system.关键词
数字PCR/Smith-PID控制/双闭环比值控制/液路系统Key words
digital PCR/Smith-PID control/double closed loop ratio control/liquid system分类
信息技术与安全科学引用本文复制引用
陈庆明,刘经龙,李冬梅..基于Smith-PID的数字PCR检测仪液路双闭环比值控制系统的设计[J].中国医疗设备,2017,32(10):33-38,6.
