DocumentCode :
3111685
Title :
A developed microfluidic system with model reference adaptive control
Author :
Wei, Wei ; Guo, Shuxiang
Author_Institution :
Tianjin Univ. of Technol., Tianjin, China
fYear :
2012
fDate :
5-8 Aug. 2012
Firstpage :
403
Lastpage :
408
Abstract :
A developed microfluidic system which is actuated by EO (electroosmotic) actuators was presented toward biomedical system and drug delivery systems. The classical structure, which consists of an actuating unit, chambers and rectifiers, has been employed in the design. The EO actuators with the impulse input make the polydimethylsiloxane (PDMS) diaphragm which separates the two chambers reciprocate. So the working liquid can be pumped from inlet to outlet. Due to the large deflections of the PDMS diaphragm, the device is completely self-filling and able to pump liquid even operated in vertical situation. By using the indirect pumping mechanisms, the EO actuator can be used more widely without considering the properties of the working liquid. In order to find the characteristic of the microfluidic system, the Bouc-Wen model was used to model it. Based on this model, the model reference adaptive control (MRAC) method was used to obtain the stable flow rate, because of the uncertain parameter. And some simulations were manipulated to show the controlling results of the MRAC which is used in the microfluidic system. These researches demonstrate the microfluidic system with MRAC performance and ability to deliver the fluid and drugs to biomedical systems.
Keywords :
diaphragms; drug delivery systems; electrophoresis; flow control; medical control systems; microfluidics; micropumps; model reference adaptive control systems; osmosis; polymers; stability; uncertain systems; Bouc-Wen model; EO actuator; MRAC method; MRAC performance; PDMS diaphragm; actuating unit; biomedical system; chambers; drug delivery system; electroosmotic actuator; flow rate stability; fluid delivery; indirect pumping mechanism; liquid pumping; microfluidic system; model reference adaptive control; polydimethylsiloxane diaphragm; rectifiers; self-filling device; uncertain parameter; working liquid; Actuators; Adaptation models; Electrooptic deflectors; Liquids; Microfluidics; Micropumps; Valves; Diaphragm micropump; Drug delivery system; Electroosmotic actuaion; MRAC;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Mechatronics and Automation (ICMA), 2012 International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4673-1275-2
Type :
conf
DOI :
10.1109/ICMA.2012.6282877
Filename :
6282877
Link To Document :
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