Title:
RESOLVER MALFUNCTION DETECTION METHOD, ANGLE DETECTION DEVICE, MOTOR, AND TRANSPORT DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/184833
Kind Code:
A1
Abstract:
Provided is a resolver malfunction detection method that can promptly detect malfunctions without requiring complex computations, an angle detection device, a motor, and a transport device. A circuit is provided that supplies a sinusoidal wave and direct-current voltage in alternation as an excitation signal for a resolver (2). Immediately after a power source has been introduced, a direct-current voltage is impressed on the resolver (2) and the output voltages of the resolver (2) at various phases when the direct-current voltage has been impressed are measured. At that time, the output voltages at the various phases are compared and if all of the output voltages do not match, it is determined that a malfunction (short-out malfunction, short-circuit malfunction) has occurred in the resolver (2).
Inventors:
KONDO KEI (JP)
Application Number:
PCT/JP2013/007484
Publication Date:
November 20, 2014
Filing Date:
December 19, 2013
Export Citation:
Assignee:
NSK LTD (JP)
International Classes:
G01D5/20; G01D5/244; H02P29/00
Foreign References:
| JP2008197061A | 2008-08-28 | |||
| JP2011169654A | 2011-09-01 | |||
| JP2001343253A | 2001-12-14 | |||
| JP2013044679A | 2013-03-04 |
Other References:
See also references of EP 2998707A4
Attorney, Agent or Firm:
MORI, Tetsuya et al. (JP)
Woods Tetsuya (JP)
Woods Tetsuya (JP)
Download PDF: