Time-delayed positive-position and velocity fefe edback controller to suppress the lateral vibrations in nonlinear Jeffcott-rotor system | ||||
Menoufia Journal of Electronic Engineering Research | ||||
Article 14, Volume 27, Issue 1, January 2018, Page 261-278 | ||||
Document Type: Original Article | ||||
DOI: 10.21608/mjeer.2018.64548 | ||||
View on SCiNiTO | ||||
Authors | ||||
M. Eissa1; M. Kamel1; N. A. Saeed2; W. A. El-Ganaini2; H. A. El-Gohary1 | ||||
1Dept. of Physics and Eng., Mathematics, Faculty of Elect., Eng., Menoufia University. | ||||
2Dept. of Physics and Eng., Mathematics, Faculty of Elect., Eng., Menoufia University | ||||
Abstract | ||||
Within this paper, the negative-velocity and positive-position feedback (PPF) controllers are combined together to eliminate the lateral vibrations of a vertically supported nonlinear Jeffcott-rotor system. Time-delays (1 and 2 ) in the control loop are included in the system model. The slow-flow modulating equations governing the whole system vibration amplitudes are derived utilizing asymptotic analyses. The maximum limits of 1 and 2 at which the system solution remains stable are illustrated. The analyses approved that the integration of velocity controller to the PPF one, improves the control efficiency and stretches the stable limits of both 1 and 2 . Finally, numerical confirmations for the obtained analytical results are included, which are in excellent agreement with the analytical solution | ||||
References | ||||
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