Position control of a brushless DC motor without velocity measurements

摘要

The paper presents a rotor position-velocity tracking controller for a brushless DC motor-load system without velocity measurement. An 'observed integrator backstepping' procedure and a nonlinear rotor velocity observer are utilised to design a nonlinear tracking controller which guarantees globally exponentially stable position-velocity tracking. The proposed controller is successfully implemented on a brushless DC motor-load system.