References

Book and Paper

1. Farid Golnaraghi, Benjamin C. Kuo - Automatic Control Systems (2009, Wiley)

2. Arun Ghosh, T. Rakesh Krishnan, Pailla Tejaswy, Abhisek Mandal, Jatin K. Pradhan, Subhakant Ranasingh - "Design and implementation of a 2-DOF PID compensation for magnetic levitation systems" (July 2014)