Apparatus and method for measuring position deviation of rotor of permanent magnet synchronous motor

#This application claims priority to Chinese Application Serial Number 201210486905.5, filed Nov. 26, 2012, which is herein incorporated by reference.

#1. Technical Field

#The present disclosure relates to a permanent magnet synchronous motor, and more particularly relates to an apparatus for measuring a position of a rotor of a permanent magnet synchronous motor.

#FIG. 1 is a schematic view of an apparatus for measuring a position deviation of a rotor of a permanent magnet synchronous motor (PMSM) according to an embodiment of the present disclosure;

#FIG. 2 is a schematic waveform diagram of the position deviation of a rotor during a measuring process according to an embodiment of the present disclosure;

#FIG. 3 is a schematic waveform diagram of the position deviation of a rotor based on different q-axis AC signals according to an embodiment of the present disclosure;

#The present disclosure will be described in details in the following embodiments with reference to the accompanying drawings. However, the embodiments described are not intended to limit the present disclosure. Moreover, it is not intended for the description of operation to limit the order of implementation. Any device with equivalent functions that is produced from a structure formed by a recombination of elements shall fall within the scope of the present disclosure. Moreover, the appending drawings are only used for illustration and are not drawn to scale. For convenience of understanding, the same reference numbers represents the same elements in the following description.

#The “about”, “approximately” or “substantially” used herein generally refer to a numeral error or scope within 20%, preferably within 10%, and more preferably within 5%. If it is not sated explicitly, the referred numbers are all regarded as approximate values with for example the error or scope represented by the phrases “about”, “approximately” or “substantially” or other approximate values.

#The phrases “first”, “second” and the like used herein are neither intended to specifically designate a sequence or order nor intended to limit the disclosure, and are only used to identify elements or operations described through the same technical terms.