Abstract
Two identical controllers have been utilised for the two electromagnets independently, and the cylindrical rod has been levitated by employing independent SISO control of each gap. The whole unit was considered to be composed of two decoupled identical subsystems. The use of decoupling technique simplified the overall analysis and design of the controller units. The cascade compensators for the two units have been designed by using classical synthesis method. The prototype has been successfully tested, and its stable levitation has been demonstrated at the desired gap position. The two independent SISO controllers designed for controlling and maintaining a fixed air-gap at the two sides of the rod are found to work successfully in unison.