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AutoQuiz: What is the Definition of a PID Control Loop?

AutoQuiz is edited by Joel Don, ISA's social media community manager.

Today's automation industry quiz question comes from the ISA Certified Automation Professional certification program. ISA CAP certification provides a non-biased, third-party, objective assessment and confirmation of an automation professional's skills. The CAP exam is focused on direction, definition, design, development/application, deployment, documentation, and support of systems, software, and equipment used in control systems, manufacturing information systems, systems integration, and operational consulting. Click this link for information about the CAP program. This question is from the CAP study guide, Performance Domain III, System Design. Definition: Design, specify, and procure the hardware/software used in the system.

AutoQuiz-20160708-pid-loop-diagram

How is PID defined in the phrase "PID control loop?"

a) Proportional Instrument Device
b) Piping Instrumentation Diagram
c) Percentage Integration Delta
d) Proportional Integral Derivative
e) None of the above

 

The PID term as described refers to the loop control technique used in controllers.  A PID control loop includes proportional, integral, and derivative functions to control the process.

The correct answer is D, Proportional Integral Derivative.

 

Joel Don
Joel Don
Joel Don is the community manager for ISA and is an independent content marketing, social media and public relations consultant. Prior to his work in marketing and PR, Joel served as an editor for regional newspapers and national magazines throughout the U.S. He earned a master's degree from the Medill School at Northwestern University with a focus on science, engineering and biomedical marketing communications, and a bachelor of science degree from UC San Diego.

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