Abstract
This paper proposes a generalized and simple analytical method to design robust fractional-order lead compensator (FOLC). The aim of the proposed fractional-order compensator is to adjust the system’s Bode phase curve to achieve the required phase margin at a specified frequency. The structure selected in this paper is more generalized and novel. It is easy to implement for a real world application. The method proposed is frequency domain and parameters of fractional compensator are selected from the plant information and specifications. This FOLC satisfies the specifications on static error constant, K ss, gain crossover frequency, ωc and phase margin, φm. The applicability of the proposed method is demonstrated with illustrative examples. From the simulation results obtained, it is observed that FOLC gives robust and stable performance as compared to existing FOLC and integerorder lead compensator (IOLC).
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Recommended by Associate Editor Jiuxiang Dong under the direction of Editor PooGyeon Park.
Sharad P. Jadhav received the M.E degree in Instrumentation Engineering from Pune University, India in 2009 and pursuing a Ph.D degree in Instrumentation Engineering from Swami Ramanand Teerth Marathwada University, Maharashtra, India. He is currently with the Ramrao Adik Institute of Technology, Maharashtra, India. His research interests include control system, industrial process control, fractional-order control.
Rajan H. Chile received the Ph.D. degree in Instrumentation engineering from IIT, Roorkee, India in 1999 and M.E degree from Dr.Babasaheb Ambedkar Marathwada University, Maharashtra, India in 1992. He is currently with the Shri Guru Gobind Singhji Institute of Engineering and Technology, Maharashtra, India. His research interests include adaptive and process control, process instrumentation, power plant instrumentation.
Satish T. Hamde received the Ph.D. degree in Instrumentation engineering from IIT, Roorkee, India in 2001 and M.E degree from Dr.Babasaheb Ambedkar Marathwada University, Maharashtra, India in 1992. He is currently with the Shri Guru Gobind Singhji Institute of Engineering and Technology, Maharashtra, India. His research interests include Biomedical instrumentation, Bio-signal processing, application of Wavelet transform.
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Jadhav, S.P., Chile, R.H. & Hamde, S.T. A simple method to design robust fractional-order lead compensator. Int. J. Control Autom. Syst. 15, 1236–1248 (2017). https://doi.org/10.1007/s12555-016-0131-6
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DOI: https://doi.org/10.1007/s12555-016-0131-6