PID Closed Control Loop of a Knudsen Pump

[felipesrt]

Contact Information

Universityof Louisville

STUDENT:Felipe Ramos

MAJOR:Electrical and Computer Engineering

Email: felipesrt@hotmail.com

Project Information

Title:PID Closed Control Loop of a Knudsen Pump

Description:

Thedevelopment of the PID closed loop controller is to facilitate the flow controlthrough a Knudsen pump as well as measuring the flow through the pump. The PIDdesign is based on a flow sensor voltage which is connected to an analog inputin the NI USB 6009 DAQ. This input is processed by a PID control and generatesan output signal to perform a Pulse Width Modulation (PWM) to control thethermoelectric temperature which increases or decreases the flow. A graphicinterface was also design to provide the user with tools which can be used toincrease and decrease the flow. The graphic interface also includes a wavechart and voltage meter which show the voltage being read, as well as a controlicon which shows the flow in standard cubic centimeters (sccm).

Products:

NI USB 6009 DAQ

LabView

Thermoelectric

Flow Sensor

The Challenge:

To control the airflow through a Knudsen gas pump by using a Closed Loop Control circuit

The Solution:

See attached file...!!!

[jcallaway]

Hi Felipe,

Thank you so much for your project submission into the NI LabVIEW StudentDesign Competition. It's great to see your enthusiasm for NI LabVIEW! Make sureyou share your project URL(https://decibel.ni.com/content/docs/DOC-16432)with your peers and faculty so you can collect votes for your project and win.Collecting the most "likes" gives you the opportunity to win cashprizes for your project submission. If you or your friends have any questionsabout how to go about "voting" for your project, tell them to readthis brief document (https://decibel.ni.com/content/docs/DOC-16409).

Finally - please add the following information to your submission document (so it can be considered complete). I know that parts of the information we need are in your attachment, but we need it completed to fully process your 2011 LabVIEW Student Design Project Submission.

Faculty Advisors

The Solution

Benefits gained using LabVIEW and NI tools

Add image(s), video, and VI code to give us a clear picture of your project.

Good luck,

Jessica in Austin, Texas