WebCTRL - PID Open Loop Tuning
The zip file contains TUNE_OL.eiw which uses the Ziegler-Nichols equations to recommend PID gains based on the open loop response of a system. The Readme.txt file explains its use. Very useful for tuning control systems in the field, this program is also interesting in that it shows how EIKON can be used for "traditional" programming tasks, not just HVAC controls.
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