Adaptive/self-tuning PID control by frequency loop-shaping. - Elena Grassi; Kostas Tsakalis; Sachi Dash; Sujit V. Gaikwad; Gunter Stein (CDC, 2000)

Integrated system identification and PID controller tuning by frequency loop-shaping. - Elena Grassi; Kostas Tsakalis; Sachi Dash; Sujit V. Gaikwad; Ward MacArthur; Gunter Stein (IEEE Trans. Control. Syst. Technol., 2001)