In order to satisfy stringent performance requirements in a dynamic process, a computer is incorporated as a central element in the feedback loop. The computer performs the dual task of identifying or measuring the process' dynamics, and thence generating an appropriate command or actuating signal so as to satisfy the overall specifications. The family of singularity functions (steps, ramps, confluent parabolas) is used as the command signal. The process1 dynamics is monitored and identified by the computer without recourse to interrupting test signals such as periodic impulses or white noise. The stored energy term inherent in many, measurement problems in continuous processes is accounted for in a novel manner.
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