Covent Ventilator

Was the team lead of Covent ventilator project, a local rapid ventilator which is built as a try to cover the shortage in ventilators due to the Covid-19 breakdown. My role was to coordinate the team and mainly to build the software, control system as well as the electronic boards which are based on dsPIC33 controller. The project took around 70 days to see the light and finally accredited as an emergency ventilator from the Respiration Lab in Arab American University Palestine. The respiratory embraces more than a control loop in the control system, some of them are coupled and others are decoupled. The most sophisticated control loop of the ventilator was the DC servo control loop with the inspiration cycle which takes place while the piston is ejecting the mixed air. This loop is governed based on a non-linear identified model of the piston and an artificial lung. LQR controller is then built based on six linearized models of the non-linear model. Expiration PEEP pressure controller uses Sliding mode control, which is a non-linear robust controller. Other minor control loops use PID with gain scheduling to overcome the non-linearity. The system is interfaced with RaspberryPi to show the curves of Pressure, Volume and Air Flow as well as to control the necessary parameters.