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An adaptive cascade control for a class of chemical reactors

This paper is addressed to the problem of designing an adaptive cascade controller to stabilize a jacketed continuous chemical reactor whose isothermal dynamics are globally stable. Assuming that the heat generation and transfer models are uncertain, the controller is built on the basis of back‐stepping procedure in conjunction with the mass and energy conservation principles that underlie the reactor behaviour. The corresponding closed‐loop dynamics are studied yielding a semiglobal stability criterion coupled with a systematic construction‐tuning procedure. The resulting cascade controller has aPI‐type structure with an antireset windup scheme, and is put in perspective with its industrial‐type counterpart. A simulated example is used to illustrate the functioning of the proposed controller. Copyright © 2002 John Wiley & Sons, Ltd.