Title:
レゾルバの異常検出装置
Document Type and Number:
Japanese Patent JP5189659
Kind Code:
B2
Abstract:
A malfunction detection device for a resolver detects malfunction in a resolver with accuracy and stability even if a value of a square sum is varied between inside and outside of a normal range. When the resolver is in malfunction, a sine signal and a cosine signal are read. It is determined whether a malfunction determination of the resolver is prohibited, or not, from read values of the sine signal and the cosine signal, or square values thereof. When it is determined that the malfunction determination of the resolver is prohibited, the count value is accumulated and incremented every time the test value falls outside a normal range. When the count value arrives at a given value or higher, it is determined that the resolver is in malfunction.
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Inventors:
Shunichi Wada
Takayuki Yamamoto
Ryoichi Yonezawa
Masaki Matsushita
Katsuya Ikemoto
Takayuki Yamamoto
Ryoichi Yonezawa
Masaki Matsushita
Katsuya Ikemoto
Application Number:
JP2011004922A
Publication Date:
April 24, 2013
Filing Date:
January 13, 2011
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
G01D5/20; G01D5/244
Domestic Patent References:
| JP9072758A | ||||
| JP2009192342A |
Attorney, Agent or Firm:
Masuo Oiwa
Toshihide Kodama
Takenaka Ikuo
Keigo Murakami
Toshihide Kodama
Takenaka Ikuo
Keigo Murakami