TY - GEN
T1 - Auto-tuning of PID controller with phase margin specification for digital voltage-mode buck converter
AU - Yan, Yan
AU - Shehada, Ahmed
AU - Beig, Abdul R.
AU - Boiko, Igor
N1 - Funding Information:
*Research supported by Khalifa University – grant CIRA-2018-104. I. Boiko is with the Department of Electrical Engineering and Computer Science, Khalifa University, Abu Dhabi, United Arab Emirates (UAE) (phone: +971 2 6075505; e-mail: [email protected]).
Publisher Copyright:
© 2020 IEEE.
PY - 2020/8
Y1 - 2020/8
N2 - This paper presents an application of an auto-tuning method based on the modified relay-feedback test (MRFT) to a digitally-controlled voltage-mode DC-DC buck converter. PID controller parameters are calculated using the proposed tuning rules that guarantee a specified phase margin. The inputs to the PID tuning rules are the measured frequency and amplitude of the oscillations produced by the MRFT. It is mathematically proven in the paper that the specified phase margin is guaranteed - provided certain given constraints on the controller parameters are satisfied. Another contribution of this paper is the implementation of the MRFT on a DC-DC buck converter. The transient performance of the auto-tuned PID controller is experimentally tested, and is compared to the response of an optimal but non-auto-tuned controller. The results show good performance of the proposed method. Finally, some practical considerations regarding the application of the MRFT-based auto-tuning to switching converters are discussed.
AB - This paper presents an application of an auto-tuning method based on the modified relay-feedback test (MRFT) to a digitally-controlled voltage-mode DC-DC buck converter. PID controller parameters are calculated using the proposed tuning rules that guarantee a specified phase margin. The inputs to the PID tuning rules are the measured frequency and amplitude of the oscillations produced by the MRFT. It is mathematically proven in the paper that the specified phase margin is guaranteed - provided certain given constraints on the controller parameters are satisfied. Another contribution of this paper is the implementation of the MRFT on a DC-DC buck converter. The transient performance of the auto-tuned PID controller is experimentally tested, and is compared to the response of an optimal but non-auto-tuned controller. The results show good performance of the proposed method. Finally, some practical considerations regarding the application of the MRFT-based auto-tuning to switching converters are discussed.
UR - http://www.scopus.com/inward/record.url?scp=85094121659&partnerID=8YFLogxK
U2 - 10.1109/CCTA41146.2020.9206355
DO - 10.1109/CCTA41146.2020.9206355
M3 - Conference contribution
AN - SCOPUS:85094121659
T3 - CCTA 2020 - 4th IEEE Conference on Control Technology and Applications
SP - 801
EP - 806
BT - CCTA 2020 - 4th IEEE Conference on Control Technology and Applications
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 4th IEEE Conference on Control Technology and Applications, CCTA 2020
Y2 - 24 August 2020 through 26 August 2020
ER -