Benefits of Fuzzy Logic for Advanced Process Control

By Jeffrey Shearer, Rockwell Automation

Rockwell Automation has released a new white paper exploring fuzzy logic and how it helps engineers solve nonlinear control problems commonly found in process applications. Fuzzy logic, which mathematically emulates human reasoning, provides an intuitive way to design function blocks for intelligent control systems, advanced fault detection and other complex applications. Control systems deploying fuzzy logic can improve the management of uncertain variables, such as temperature fluctuations.

The paper, “Nonlinear Control and Decision Making Using Fuzzy Logic in Logix,” provides best practices for designing with fuzzy control and examines its benefits compared to conventional control methods. In addition, the paper outlines how to develop fuzzy logic algorithms for the Allen-Bradley Logix family of programmable automation controllers, using the RSLogix 5000 FuzzyDesigner software package. The paper introduces the newest features of the RSLogix 5000 FuzzyDesigner software package, such as fuzzy logic add-on instructions. These features reduce development time, improve maintainability and ease setup of fuzzy logic programs, all while helping to protect intellectual property.

“At its heart, fuzzy logic is a way to embed an engineer’s experience into the control system,” said Jeffrey Shearer, software product manager, Rockwell Automation. “It can significantly improve response to fast-changing variables, so we are actively incorporating fuzzy logic into our Logix family of controllers, giving users a common control platform for their discrete, batch and advanced process control needs.”

For a copy of this white paper, visit www.rockwellautomation.com/go/prfuzzy

Rockwell Automation, Inc. (NYSE: ROK) is a leading global provider of industrial automation power, control and information solutions that help manufacturers achieve a competitive advantage in their businesses. The company brings together leading global brands in industrial automation which include Allen-Bradley controls and services and Rockwell Software factory management software. Headquartered in Milwaukee, Wis., the company employs about 19,000 people serving customers in more than 80 countries.

For more information on fuzzy logic, please contact the Rockwell Automation Response Center, 10701 Hampshire Ave. South, Bloomington, Minn., 55438, 800.223.5354, ext. 2014.