Retraction notices

Artificial ecosystem-based optimization for optimal tuning of robust PID controllers in AVR systems with limited value of excitation voltage

Type
Expression of concern
Notice date
12/15/2021 0:00
Journal
The International Journal of Electrical Engineering & Education
Publisher
SAGE Publications
Notice DOI
10.1177/00207209211064046
Original paper DOI
10.1177/0020720920940605

Reasons