Estimation of mismatch errors of dynamic models for stirred tank-reactor equipment—I. heat exchange with jacket, impact of model reduction

✍ Scribed by Heinz A. Preisig

• Publisher: Elsevier Science
• Year: 1989
• Tongue: English
• Weight: 985 KB
• Volume: 44
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(89)85104-8

✦ Synopsis

model reduction techniques are examined for their quality of approximation of the distributed heat transfer between the jacket and the contents. Three techniques are compared, namely finite difference, orthogonal collocation and finite element. Each technique was applied with different order, or which is the same, different number of mesh points in the wall. The modelling mismatch errors are dynamic and thus compared in the frequency domain. The models are studied for the purpose of implementing them in control related procedures, such as observers. Simplicity is thus a requirement, however, should not interfere with the accuracy required by the particular application.