Method and control structure for controlling moments in numerically controlled elastic (and therefore oscillation-capable) multiple mass systems

Abstract

A control capability is provided for feed-forward torque control of numerically controlled, elastic and thus oscillating multiple-mass systems, which capability takes account of the elastic behavior between a drive and the load connected to it. This is achieved essentially in that a spring torque which causes oscillations and is associated with the most pronounced natural frequency of the multiple-mass system is derived from a reference model and is compensated for by applying disturbance compensation variables to a feed-forward torque control path.

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