Control Constants Decision Method of Proportional-Integral Control and Double Phase Advance for Magnetic Suspension and Balance Systems

A control system consisting of proportional-integral (PI) controller and double phase advancer for a Magnetic Suspension and Balance System (MSBS) of Japan Aerospace Exploration Agency (JAXA) is explained in detail in this paper. Decoupling controller is also explained, which stabilizes the system by reducing the coupling motion between two axes. Furthermore, roles of control constants are made clear through parametric investigations considering the stability and disturbance suppression performance. Due to these investigation results, a course is shown to find proper control constants of PI controller and double phase advancer for an actual system.