OBSE RVATIONS LOCUS IS CONSISTENT WITH FIXING E COMPENSATOR DYN AM 0THE小 CHANGING THE GAIA K ROOT LOCUS ENABLES US TO DETERMINE KEy FEATU RES OF THE CLOSE0-L0oP /STEM TRANSIENT) RESPONSE (FROM THE POLE LOCATLONS GIVEN THE OPEN-LooP N FORMATION 0c.k WILL SEE THAT IT IS HARD To INFER SoME PERFoRMANCE PRo PERTIES FRoM THIS LOCUS sE800ETEc川uT00 PPROACH SUGGESTE D BY W.R. EVANS Evans, W.R. Graphical analysis of control systems, AIEE Transactions, vol 67,, 1948, pp 547-551; and Control system synthesis by root locus method, AIEE Transactions, vol. 69, 1950, pp. 88-89