A problem encountered with electrically driven vehicles are resonances in the drive train caused by elasticity and gear play. Disadvantageous effects caused by this are noticeable vibrations and high mechanical stresses due to torque oscillations. The oscillations can be damped using a control structure consisting of a nonlinear observer to estimate the torque in the gear and a controller, which computes a damping torque signal that is added to the driver's demand. The control algorithm was implemented in the existing motor control unit without any additional hardware cost. The controller was successfully tested in a test vehicle. The resonances can essentially be eliminated. The controller copes satisfactorily with the backlash problem.
Active damping of drive train oscillations for an electrically driven vehicle
IEEE/ASME Transactions on Mechatronics ; 9 , 4 ; 697-700
2004
4 Seiten, 10 Quellen
Article (Journal)
English
DRIVE UNIT FOR DRIVE TRAIN OF ELECTRICALLY DRIVEN MOTOR VEHICLE AND DRIVE ASSEMBLY
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