A new identification approach for a synchronous drive

This paper describes a new identification approach for a synchronous electromechanical drive. The electrical and the mechanical parts of the drive are identified. The identification is done when the system is in closed loop and in real operating conditions. Thus the approach can be used to perform monitoring and diagnosis actions. The originality of the approach is in the use of the a priori known input/output signals and control structure, but without precise knowledge of the controller parameters.