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Enhancing the robustness of internal-model-based nonlinear pH controller

✍ Scribed by N.V. Shukla; P.B. Deshpande; V.Ravi Kumar; B.D. Kulkarni

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
614 KB
Volume
48
Category
Article
ISSN
0009-2509

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✦ Synopsis

Abstmct-A simple mechanism that renders robustness to a nonlinear controller designed using an internal-model control (IMC) strategy is presented. A comparative study between this and the conventional IMC strategy for controlling the pH of a strong acid-strong base solution shows five orders of magnitude improvement in the extent of sampling time that can be tolerated. The simulations also suggest speedier recovery of system to the set point in the presence of load disturbances and modeling errors.

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