专利名称：Method for measuring the rotational speed
of an EC motor
发明人：Holger Stork申请号：US11116757申请日：20050428
公开号：US20050253541A1公开日：20051117
专利附图：
摘要：A method for measuring the rotational speed of an EC motor having a primarypart including a winding, and a secondary part having magnet segments offset withrespect to one another in the circumferential direction and magnetized in alternatingly
opposite directions, the magnet segments having tolerances regarding their positioningand/or their dimensions, the method including rotating the secondary part with respectto the primary part and detecting the position of the magnet segments with respect tothe primary part. The position measuring signal is differentiated to form a rotationalspeed signal. At least one correction value is determined and saved to compensate theinfluence of at least one of the tolerances on the speed signal. The speed signal iscorrected with the aid of the correction value.
申请人：Holger Stork
地址：Buehl DE
国籍：DE
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