复合控制算法在微流控芯片气压驱动中的应用  

Application of composite control algorithm in pneumatic driving of microfluidic chips

作　　者：刘旭玲 薄乐 刘威 左文思 金少搏 李松晶[2] LIU Xuling;BO Le;LIU Wei;ZUO Wensi;JIN Shaobo;LI Songjing(School of Mechatronics Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,China;School of Mechatronics Engineering,Harbin Institute of Technology,Harbin 150001,China)

机构地区：[1]郑州轻工业大学机电工程学院,郑州450002 [2]哈尔滨工业大学机电工程学院,哈尔滨150001

出　　处：《重庆理工大学学报（自然科学）》2023年第10期327-333,共7页Journal of Chongqing University of Technology：Natural Science

基　　金：国家自然科学基金项目(52005453,52075500);河南省科技攻关项目(232102320056);河南省交通运输厅科技项目(2020J1,2020J2)。

摘　　要：提出一种气动微流控芯片气体驱动腔气压复合控制方法。利用Bang-Bang、k+PWM、复合控制控制方法对阶跃输入信号进行分析,采用实验研究方式对3种闭环控制方式的驱动腔压力上升时间、压力稳态精度和压力脉动进行分析比较。复合控制方法k+PWM+Bang-Bang兼备了Bang-Bang控制和PWM控制的优点,不仅能够缩短驱动腔响应时间,还能提高气压稳态精度,大幅降低压力波动。A composite control method for actuated chambers of pneumatic microfluidic chips is proposed in this paper.The Bang-Bang,k+PWM and compound control methods are employed to analyze the step input signal.The pressure rise time,steady-state accuracy and pressure pulsation of the actuated chamber of the three closed-loop control methods are investigated and compared by experimental research.The composite control method of Bang-Bang+k+PWM combines the advantages of the Bang-Bang control and the k+PWM control:it reduces the response time of the actuated chamber,improves the steady-state accuracy and significantly reduces pressure fluctuations.

关 键 词：驱动腔 三通微阀 BANG-BANG控制 k+PWM控制 复合控制方法 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]