Method and apparatus for suppressing mechanical vibration in cardan hollow shaft traction drive trains

摘要

The invention relates to a method for damping slip-stick vibrations by means of a virtual Tilgers based on a reduced three-mass model of an arbitrarily branched cardan hollow shaft traction drive train. According to the invention, a reduced three-mass model of the traction drive train and the parameters of a mechanical absorber are deposited, the virtual absorber can be placed anywhere on the three-mass model by equating the standard control structure with a three-mass model with a mechanical absorber model to the modified control structure with virtual absorber for the three-mass model without mechanical absorber model, the two transfer functions (FT, Fω) of the virtual absorber are calculated under different constraints (FT = 0, Fω = 0 or measurement noise gain minimum), depending on Aging and wear of the drive train, the transfer functions of the virtual controller and the absorber parameters tracked, any speed signal of the drive train (ω) and the estimated air gap torque of the asynchronous machine Te 'are the inputs of the virtual Tilgerreglers. Thus, one obtains a method with the slip-stick vibrations in cardan hollow shaft drive trains can be optimally suppressed and is applicable to branched and unbranched multi-mass systems.