1. Pid Controllers: Theory, Design and Tuning;Astrom,1995
2. Relay-based PID tuning;Wilson;Automat. Control,2005
3. Development of an approach towards comprehensive identification of hysteretic dynamics in piezoelectric actuators;Liu;IEEE Trans. Control Syst. Tech.,2012
4. A review of feedforward control approaches in nanopositioning for high-speed SPM;Clayton;ASME J. Dyn. Syst. Measur. Control,2009
5. Feedforward control of piezoactuators in atomic force microscope systems;Leang;IEEE Control. Syst. Mag.,2009