Strejc method
The Strejc system identification method allows the estimate of the transfer function of a non-periodic, black box-type system based on its step response and is widely used in all branches of industrial and mechanical engineering.
It allows specifically to estimate the order n of the studied system, its time constant and its delay.
To use the Strejc method, it is necessary to apply a step signal to the system and record its tu and tg parameters by observing the inflection point of the response curve. These parameters are then compared with the ones in the numeric table to estimate what order approximates better the system's behaviour and then find the time constant t with the second column (using the appropriate order).
Strejc table
| Order (n) | tû/t | tg/t | tu/tg |
|---|---|---|---|
| 1 | 0 | 1 | 0 |
| 2 | 0.28 | 2.72 | 0.1 |
| 3 | 0.8 | 3.7 | 0.22 |
| 4 | 1.42 | 4.46 | 0.32 |
| 5 | 2.10 | 5.12 | 0.41 |
| 6 | 2.81 | 5.70 | 0.49 |
See also
References
- V.Strejc, Näherungsverfahren für aperiodische Übergangscharakteristiken, Automatisierungstechnik, DeGruyter, 1959
- J. Mikles, M. Fikar, Process Modelling, Identification, and Control, Springer, 2007, pp. 230–233
- Byrski, Witold (2017). A new method of multi-inertial systems identification by the Strejc model. Springer International Publishing. pp. 536–549. ISBN 978-3-319-60699-6.
 | This mathematical physics–related article is a stub. You can help Wikipedia by adding missing information. |
Content Disclaimer
Informasi ini disarikan dari Wikipedia dan disajikan kembali untuk tujuan edukasi. Konten tersedia di bawah lisensi CC BY-SA 3.0. Kami tidak bertanggung jawab atas ketidakakuratan data yang bersumber dari kontribusi publik tersebut.
- The information displayed on this website is sourced in part or in whole from Wikipedia and has been adapted for the purpose of restating it. We strive to provide accurate and relevant information, however:
- There is no guarantee of absolute accuracy. Wikipedia is an open, collaborative project that can be edited by anyone, so information is subject to change.
- It is not intended to constitute professional advice. The content displayed is for informational and educational purposes only. For important decisions (e.g., medical, legal, or financial), please consult a professional.
- Content copyright. Wikipedia is licensed under the Creative Commons Attribution-ShareAlike License (CC BY-SA). This means that content may be reused with appropriate attribution and shared under a similar license.
- Responsible use. Any risk arising from the use of information from this website is entirely the responsibility of the user.