- Tytuł:
- The combined effect of fractional filter and Smith Predictor for enhanced closed-loop performanceof integer order time-delay systems: some investigations
- Autorzy:
-
Nagarsheth, Shaival Hemant
Sharma, Shambhu Nath - Powiązania:
- https://bibliotekanauki.pl/articles/229571.pdf
- Data publikacji:
- 2020
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
generalized fractional controller
Smith predictor
time delay system
generalized inverse
Bode’s ideal transfer function - Opis:
- This paper proposes a generalized fractional controller for integer order systems with time delay. The fractional controller structure is so adopted to have a combined effect of fractional filter and Smith predictor. Interestingly, the resulting novel controller can be decomposed into fractional filter cascaded with an integer order PID controller. The method is applied to two practical examples i.e. liquid level system and Shell control fractionator system. The closed-loop responses resulting from the proposed method are compared with that of the available methods in the literature. For quantitative evaluations of the proposed method, Integral Absolute Error (IAE) and Integral Square Control Input (ISCI) performance criteria are employed. The proposed method effectively enhances the closed-loop response by improving the IAE values, reducing the control effort inputs to achieve the desired output. The disturbance rejection and robustness tests are also carried out. The robustness test reveals a significant improvement in the maximum absolute sensitivity measure. That is displayed in numerical simulations of the paper.
- Źródło:
-
Archives of Control Sciences; 2020, 30, 1; 47-76
1230-2384 - Pojawia się w:
- Archives of Control Sciences
- Dostawca treści:
- Biblioteka Nauki
Artykuł