TY - BOOK
T1 - Control of a thermo-electric element for lab-on-a-chip applications
AU - Chen, J.
A2 - Nijmeijer, H.
A2 - Box, S.
N1 - Traineeship report. - DC 2012.070
PY - 2013
Y1 - 2013
N2 - In the area of diagnostics, new research is being carried out to develop a new kind of micro-scaled lab on chip (LOC) systems. The requirement of accurate temperature control and using extremely small quantities of fluid are the common characteristics of these systems. Due to the limitation of indirect measurement of the desired control objective and actuator used in these systems (such as the Peltier element), temperature control has become a crucial aspect for the performance of
those newly developing products. Besides, the nonlinear properties of the material used in these systems may lead to temperature non-uniformity.
In this internship, we consider a dedicated design of a fluid temperature control unit. The model used in this project serves as a prototype for understanding and dealing with the complex issues encountered in health-care products of Philips by using the Peltier unit as the actuator. The nonlinear properties of the Peltier element to be studied are of great importance since undesirable control performance may degrade the diagnostic accuracy, or extremely, failure of controlling this element
may bring disaster to the whole system.
The objective of this study is to design a controller for the Peltier element, which aims at dealing with its nonlinear properties. Not only have a proper control technique been selected, but more importantly a well designed controller should be implemented in a simulation environment and improved performance should be achieved.
The approach consists of firstly creating a lumped mass model of a simplified benchmark system based on heat transfer equations. The finite difference method is adopted in simulation environment to test the performance of the controller.
A literature study is carried out to investigate several control strategies before a suitable one is settled. In this project, two control strategies, fuzzy self-tuning PID control and feedback linearization based control, are studied separately. The report presents the advantages and disadvantages of these control methods. The results of the implemented controllers are analyzed and compared.
AB - In the area of diagnostics, new research is being carried out to develop a new kind of micro-scaled lab on chip (LOC) systems. The requirement of accurate temperature control and using extremely small quantities of fluid are the common characteristics of these systems. Due to the limitation of indirect measurement of the desired control objective and actuator used in these systems (such as the Peltier element), temperature control has become a crucial aspect for the performance of
those newly developing products. Besides, the nonlinear properties of the material used in these systems may lead to temperature non-uniformity.
In this internship, we consider a dedicated design of a fluid temperature control unit. The model used in this project serves as a prototype for understanding and dealing with the complex issues encountered in health-care products of Philips by using the Peltier unit as the actuator. The nonlinear properties of the Peltier element to be studied are of great importance since undesirable control performance may degrade the diagnostic accuracy, or extremely, failure of controlling this element
may bring disaster to the whole system.
The objective of this study is to design a controller for the Peltier element, which aims at dealing with its nonlinear properties. Not only have a proper control technique been selected, but more importantly a well designed controller should be implemented in a simulation environment and improved performance should be achieved.
The approach consists of firstly creating a lumped mass model of a simplified benchmark system based on heat transfer equations. The finite difference method is adopted in simulation environment to test the performance of the controller.
A literature study is carried out to investigate several control strategies before a suitable one is settled. In this project, two control strategies, fuzzy self-tuning PID control and feedback linearization based control, are studied separately. The report presents the advantages and disadvantages of these control methods. The results of the implemented controllers are analyzed and compared.
M3 - Report
T3 - D&C
BT - Control of a thermo-electric element for lab-on-a-chip applications
PB - Eindhoven University of Technology
CY - Eindhoven
ER -