The Rosetta stone of controller tuning

St. Clair, David W.
July 2009
InTech;Jul2009, Vol. 56 Issue 7, p66
The article talks about the seminal paper "Optimum Settings for Automatic Controllers," by G. Ziegler and N. B. Nichols which focused on controller tuning. According to the author, this paper met great skepticism and that the Z/N approach, the Rosetta stone of controller tuning, was being adopted only by the industry in 1947. The author stresses that the open loop and the closed loop, the two tuning methods offered by Ziegler and Nichols, were both quantum leaps forward.


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