The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 31, 2007
Filed:
Jan. 19, 2004
Circuit arrangement and method for controlling a brushless, permanently excited direct current motor
Pietro DE Filippis, Milan, IT;
Karsten Lohse, Würzburg, DE;
Johannes Schwarzkopf, Marktheidenfeld, DE;
Eberhard Wünsch, Waldbrunn, DE;
Pietro De Filippis, Milan, IT;
Karsten Lohse, Würzburg, DE;
Johannes Schwarzkopf, Marktheidenfeld, DE;
Eberhard Wünsch, Waldbrunn, DE;
Siemems AG, München, DE;
Abstract
The invention relates to a circuit arrangement for self-commuting control of a brushless, permanently excited direct current motor. Said circuit arrangement determines the commutation interval by evaluating the induction signal of a signal phase. A capacitive interference suppression component is arranged between the signal phase and an adjacent motor phase in the commutation cycle in order to suppress interferences of the induction signal. The capacitive interference suppression component is dimensioned in such a way that interfering influences of the power-switch element upon the induction signal are compensated for. This makes it possible to more accurately determine the momentary rotating position of the rotor and, hence, a differentiated control or adjustment of performance-influencing manipulated variables during operation. This has positive effects upon the efficiency, the power/weight ration and energy consumption of the motor and enables stable operation.