From: A quantum particle swarm optimization-based optimal LQR-PID controller for load frequency control of an isolated power system
Critical gain (\({K}_{c}\))
\(3.74\)
Critical period (\({T}_{c}\))
\(1.935 s\)Â Â
Critical frequency (\({\omega }_{c}\))
\(\pm j3.26\, rads/s\)Â Â