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:
Nov. 19, 2013
Filed:
Aug. 09, 2011
Sebastian Villwock, Pechbrunn, DE;
Heiko Zatocil, Nuremberg, DE;
Sebastian Villwock, Pechbrunn, DE;
Heiko Zatocil, Nuremberg, DE;
Baumuller Nurnberg GmbH, Nuremberg, DE;
Abstract
A method for the identification without a shaft encoder of magnetomechanical characteristic quantities, in particular the mass moment of inertia J and the permanent magnetic flux ψbetween rotor and stator of a three-phase synchronous motor, comprising:—constant voltage supply Uin the d flux axial direction;—test signal voltage supply Uin the q transverse flux axial direction;—measuring signal current measuring Iof the q transverse flux axial direction;—identification of magnetomechanical characteristic quantities of the synchronous motor on the basis of the test signal voltage Uand of the measuring signal current I; whereby the rotor can execute deflection movements with pre-definable maximal amplitudes. Method use also for control of electrical drives. An identification apparatus for determination of magnetomechanical characteristic quantities () of a synchronous motor () that also relates to a motor control device, whereby the identified characteristic quantities can be used for the determination, optimization and monitoring of a motor control.