Process control theory

Manfred Morari, Process Control Theory Reflections on the Past Decade and Goals for the... 

L.C. Lynworth, Ultrasonic Measurements for Process Control Theory, Techniques, Applications, Academic Press, New York, NY (1989). 

Gould, L.A. Chemical Process Control Theory and Applications, Addison Wesley, Reading, Mass., 1969, p. 183. 

Busk, M. (1993). Process control Theories and profits. IFAC World Congress, Sydney, Australia, July, 7, 241-250. 

G.B. Wetherill and D.W. Brown, Statistical Process Control Theory and Practice, Chapman and Hall, London, 1991. 

L.C. Lynworth, Ultrasonic measurements for process control theory, techniques, applications, Academic Press, San Diego, 1989. 

Foss, A. S. (1973). Critique of chemical process control theory. AIChE J., 19, 209-214. 

A pivotal event for the surge of interest in process control, we believe, was the publication of three insightful critiques [1-3] that analyzed the gap between academic theory and industrial practice. Bridging this gap became the goal of the new generation of process control theory. 

What should be the role and objective of good process control theory ... 

George Stephanopoulos In that case, one must recognize the fact that systems engineering is a man-made science. It is not a natural science. Process control theory, process design, operations analysis, and fault diagnosis are not driven by advances in chemistry, biology, or physics. They are driven by advances in a separate set of scientific endeavors, such as applied mathematics, logic, computer science. 

Morari, M., Advances in process control theory, Chem. Eng. Prog. 60-61 (October, 1988). 

Despite the growing body of knowledge of process control theory most process plants are instrumented empirically today. Some useful empirical procedures are described in Section III, C, 3. 

The problem to be discussed is, essentially, how to interpret data on adsorption rates to a catalyst surface. Frequently during chemical adsorption on a catalyst surface, several processes occur simultaneously. This may result from the heterogeneous nature of the surface or to the existence of different adsorbed states. In either case, the tools of process control theory can be used to separate the phenomena and yield further information on their nature. 

This chapter presents fundamental elements from the process control theory necessary in assessing the controllability of a design. It prepares also the computational tools used in Chapter 13 devoted to plantwide control. Prior knowledge is welcome. If the material is too difficult, the reader should go back to specialized undergraduate books. A concise presentation of the process control essentials viewed from process engineer s perspective has been recently published by Luyben Luyben (1998). In the field of feedback control of multivariable systems with emphasis on controllability analysis we recommend the book of Skogetsad and Postletwhite (1998). 

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