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Integrated Computer Process Control
IIM Simple ClosedLoop System
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A/D converters actuators addition adjust analog control Analyzers applications automatic backup basic basic oxygen furnaces calculations capabilities changes chemical closed-loop closed-loop control complex computer control computerized control system computerized process control control action Control Engineering control functions control loops costs data logging DDC system determine devices digital computer direct control Direct Digital Control discussed dynamics economic efficiency end users equipment feasibility feedforward handling Honeywell improve increased industry input input/output installation instruments involved machine mainframe maintenance major manual math model measurement memory ment mills monitoring Monsanto needed nonlinear on-line operating conditions optimization optimum output percent perform personnel plant potential problems process computer process control computers process variables puter reliability Sara Lee Scientific Data Systems sensors set-point shutdown signal startup supervisory control techniques temperature time-shared tion top management trend trend recording trol Union Carbide unit usually utilize valve vendor