International Society of Automation
Orange County Section
Meeting Notice
Wednesday, June 12, 2019
Process Modeling and PI/PID Controller Tuning
Robert W. Harrison, PE
ISA Life Fellow
5:00 p.m. ~ Food & Networking
6:00 p.m. ~ Presentation

Orange Coast College
Technology Center
Building 114 on MAP> Room 222
2701 Fairview Road
Costa Mesa CA. 92626

The closest parking to the Technology Center
is Lot E off Merrimac Way between
Fairview Road and Harbor Blvd.

Parking permits will be available in the Technology Center Room 222!!

(Click for Campus Map)

Curtis Horn 714-593-7849
Arya Ahang 714-566-4705

Most Industrial processes can be modeled by a Second order plus dead time
system. However, this can be simplified by using a first order plus dead time
model to adequately determine the tuning coefficients for PI and PID
controllers. The process model parameters to be determined are:
Process Gain - kp
Process Time Constant - tp
Process Dead Time - td

Using the above parameters (
kp, tp, and td) we will calculate the PI and
PID controller tuning coefficients:
Proportional Gain - Kc
Integral Time Constant - Ti
Derivative Time Constant- Td

Using the same program we used to generate the process model, we will
setup the controllers and test the original process under closed loop control.
To evaluate our controller, we will use a built in performance monitor.
Click to View or Download Presentation

Robert Harrison received his BSEE from Purdue
University and his MSEE from the University of
Pennsylvania majoring in control systems and
computer Science. Bob then spent 38 years
developing control and data acquisition systems
in the process control and aerospace industries.
He also taught control systems at Cal State
Fullerton for 30 years. Bob retired from Boeing
North American where he was a Technical Fellow.

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