METHOD FOR MEASURING ROTOR ANGULAR POSITION OF PERMANENT-MAGNET SYNCHRONOUS MOTOR AND POSITION SENSOR

Title:

METHOD FOR MEASURING ROTOR ANGULAR POSITION OF PERMANENT-MAGNET SYNCHRONOUS MOTOR AND POSITION SENSOR

Document Type and Number:

WIPO Patent Application WO/2010/022657

Kind Code:

A1

Abstract:

A method for measuring a rotor angular position of a permanent-magnet synchronous motor and a position sensor. The position sensor includes a hardware circuit, a probe coil (102) and a signal plate (3). The hardware circuit generates a high-frequency oscillating current. The high-frequency oscillating current causes the probe coil (102) to generate alternating magnetic field. The magnetic field induces eddy currents on the surface of the signal plate (3). The eddy currents cause an effective impedance of the probe coil (102) to change. The effective impedance corresponds to the rotor angular position.

Inventors:

WU RUI (CN)

Application Number:

PCT/CN2009/073545

Publication Date:

March 04, 2010

Filing Date:

August 26, 2009

Export Citation:

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Assignee:

CHERY AUTOMOBILE CO LTD (CN)
WU RUI (CN)

International Classes:

H02P6/16; G01D5/20; H02K29/12; H02P21/00

Foreign References:

JP2002162252A	2002-06-07
CN101359893A	2009-02-04
CN101275988A	2008-10-01

Attorney, Agent or Firm:

BEIJING SUNHOPE INTELLECTUAL PROPERTY LTD. (Kunxun Plaza Zhichun Road 9, Haidian District, Beijing 3, CN)

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