System using a lolimot-model for damping drive train vibrations

摘要

Damping device for suppressing torsional vibrations in the drive branch (3) of an internal combustion engine (1) comprises a detection device for determining a mechanical state variable (delta alpha MODELL, delta alpha IST, alpha 1, alpha 2, alpha '1, alpha '2) reproducing the torsion of the drive branch, and a control device (2) for controlling the engine with a control variable (m) according to the determined state variable. The detection device has a predictor element (4) that contains a model of the drive branch and/or the engine and determines the state variable (delta alpha MODELL, alpha 1, alpha 2, alpha '1, alpha '2) in response to the control variable using this model. The model has adaptable model parameters. Independent claims are also included for: (1) Engine control device comprising the above damping device; and (2) Damping process for suppressing torsional vibrations in the drive branch of an internal combustion engine.