/services/b/weblog/posts/tuning-and-control-loop-performance-freely-available-educational-resource-364698112As promised, here is the third book of the three books Automation Hall of Fame member Greg McMillan , a renowned expert in the field, has generously made available to you. If you missed the earlier posts, check out Centrifugal and Axial Compressor Controlen-USTelligent Community 13