Transcription of Introduction to Process Control
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Introduction to Process Control Lecture 1, 2016/2017. Control & System Eng. Dept. , 4th year Subject: Process Control . Dr. Safanah M. Raafat REPRESENTATIVE Process . Control PROBLEMS. Process : The conversion of feed materials to products using chemical and physical operations. In practice, the term Process tends to be used for both the processing operation and the processing equipment. Note: this definition applies to three types of common processes: continuous, batch, and semi-batch Continuous Processes Tubular heat exchanger.
•Control valve: The controller output p(t) in this case is a DC current signal that is sent to the control valve to adjust the valve stem position, which in turn affects flow rate w 2 (t). •Because many control valves are pneumatic, i.e., are operated by air pressure, the controller output signal may have to be converted to an
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