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专利名称：Arrangement for and method of operating
an electric step motor
发明人：Reinhard Baur申请号：US07/327066申请日：190322公开号：US04949027A公开日：19900814
摘要：An electric step motor has a sensor which functions to sense the position of therotor. The sensor has an output which is connected to a first input of a unit for measuringlead angle. The measuring unit has an output which is coupled to a first input of a
comparator having a second input which is connected to a selector for choosing a desiredlead angle. The comparator is connected to an input of, and functions to regulate, a pulsegenerator which is set to emit pulses at a constant frequency equal to the rated
operating frequency of the motor. The pulse generator has an output which is connectedto a drive circuit for the motor, and such output is further connected to a second input ofthe measuring unit. The measuring unit informs the comparator of the actual lead angle.The comparator compares the actual lead angle with the desired lead angle establishedby the selector and activates the pulse generator accordingly. The pulse generatorthereupon emits a specified number of pulses at the rated operating frequency of therotor thereby causing the rotor to move. The comparator deactivates the pulsegenerator when no further displacement of the rotor is required.
申请人：GERHARD BERGER GMBH & CO. KG FABRIK ELEKTRISHER GERAETE
代理人：Peter K. Kontler
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