1. Electric Energy Systems Theory;Elgard,1982
2. A survey on optimal design of controller for AVR performance enhancement;Mosaad;I-manager’s J. Instrum. Control Eng.,2018
3. On two-degree-of-freedom PID control system;Araki,1984
4. Simple robust autotuning rules for 2-DoF PI controllers;Vilanova;ISA Trans.,2012
5. Tuning of two degree of freedom PID controller for second order processes;Kumar;Int. J. Sci., Eng. Technol. Res.,2015