Abstract
If an external disturbance v of a process can be measured before it acts on the output variable y then the control performance with respect to this disturbance can often be improved by feedforward control, as shown in Figure 17.1. Here immediately after a change in the disturbance v the process input u is manipulated by a feedforward control G s which does not wait as with feedback control until the disturbance has effected the control variable y. Significant improvement in control performance, however, can only be obtained for a restricted manipulation range if the process behaviour G Pu is not slow compared with the disturbance behaviour G Pv.
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References
Isermann, R.; Bauer, H.: Entwurf von Steueralgorithmen für Prozeßrechner. ETZ-A 36 (1975) 242–245
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© 1991 Springer-Verlag Berlin Heidelberg
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Isermann, R. (1991). Feedforward Control. In: Digital Control Systems. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-86420-9_6
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DOI: https://doi.org/10.1007/978-3-642-86420-9_6
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-86422-3
Online ISBN: 978-3-642-86420-9
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