For calculating/simulating a control loop one needs a control transfer
function. This can be generally found by evaluating mathematically a step
response as SIEMENS does, too:

https://publications.european-patent-office.org/PublicationServer/documentpdf.jsp?iDocIdR44957&iebug=.pdf

SIEMENS uses a semi-analytical method (obviously patent pending) whereas I use a 100% approximation method that is much more accurate.

The basis is just using 2 'representative' points for finding the differential equation. These 2 points can be found best via least-square polynomial approximation with appropriate number of measured points.

Are there other methods known as far as more accuracy is concerned?

https://publications.european-patent-office.org/PublicationServer/documentpdf.jsp?iDocIdR44957&iebug=.pdf

SIEMENS uses a semi-analytical method (obviously patent pending) whereas I use a 100% approximation method that is much more accurate.

The basis is just using 2 'representative' points for finding the differential equation. These 2 points can be found best via least-square polynomial approximation with appropriate number of measured points.

Are there other methods known as far as more accuracy is concerned?

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Regards/Grüße http://home.arcor.de/janch/janch/menue.htm

Jan C. Hoffmann eMail aktuell: snipped-for-privacy@nospam.arcornews.de

Regards/Grüße http://home.arcor.de/janch/janch/menue.htm

Jan C. Hoffmann eMail aktuell: snipped-for-privacy@nospam.arcornews.de

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