Sensorless Field-Oriented Estimation of Hybrid Stepper Motors in High-Performance Paper Handling

In a professional printer, the paper handling system consists of numerous independently driven actuators that manage the placement of the printing media during the entire print job. This research presents a state estimation procedure for closed-loop operation of hybrid stepper motors (HSMs) that are typically used as actuators under a wide range of operational speeds. The presented method facilitates closed-loop control of HSMs without any additional sensor