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The control of a stirred tank reactor with hysteresis in the control element - II describing function analysis

✍ Scribed by Jae Chun Hyun; Rutherford Aris

Publisher
Elsevier Science
Year
1972
Tongue
English
Weight
699 KB
Volume
27
Category
Article
ISSN
0009-2509

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✦ Synopsis

The method of the describing function is outlined and applied both to the linear problem and to the stirred tank. The hysteresis element is separable and the assumption is made that the signals to it are of sinusoidal form when the reactor is operating with a limit cycle. In spite of the shakiness of this assumption the agreement between calculated and estimated frequencies is very good and the agreement in amplitude good for small hysteresis. It is concluded that the method may be usefully applied to reactor problems when limit cycles are likely to be present.

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