Pressure characteristics of pneumatic driven microfluidic chip system adopting a stepper motor

摘要

A pneumatic driven microfluidic chip system adopting a stepper motor is presented in this paper which changing the valve opening with a stepper motor and controlling the pressure of the gas cavity. The simulation model was built by using Simulink nonlinear module after expounding the structure and working principle and establishing the mathematical model of the system. The pressure dynamic response characteristics of the pneumatic driven microfluidic chip system adopting a stepper motor on different valve opening were given based on simulation. The pressure characteristics test curves of the gas container were obtained and compared with the simulation results by building a test platform.