A NEW MODELING TECHNIQUE AND CONTROL SYSTEM DESIGN OF A FLEXIBLE ROTOR SUPPORTED BY ACTIVE MAGNETIC BEARINGS FOR MOTION AND VIBRATION CONTROL

摘要

This paper proposed a new modeling technique and control system design of a flexible rotor using active magnetic bearings (AMB) for motion and vibration control. The purpose of the research was to pass through a critical speed and achieve high-speed rotation. To achieve this, it is necessary to control both vibration and motion. Even though reduced order physical model that we used before is available technique in expressing vibration, this technique cannot express motion. Thus we propose an extended reduced order physical model that can simultaneously express motion and vibration. Further, by using the model we apply the design of a new controller that combined proportional integral derivative (PID) with linear quadratic (LQ) control to a flexible rotor. The procedure we propose is verified by simulations as being effective for a flexible rotor.