MODEL BASED DISTURBANCE OBSERVER FOR TORQUE RIPPLE REDUCTION

摘要

The present invention relates to a model-based disturbance observer for torque ripple reduction. The present invention improves estimation performance of the disturbance observer by designing the QDOB secondarily and compensating parameter uncertainty and disturbance which is not estimated in the first time after primarily compensating the disturbance using the model-based observer. Therefore, the present invention reduces speed ripples and disturbance estimation errors compared with the case using only an existing QDOB.