Diagnostic device - Hitachi Automotive Systems, Ltd.

Title:

Diagnostic device

Document Type and Number:

Japanese Patent JP6013963

Kind Code:

B2

Abstract:

A diagnostic device capable of accurately diagnosing the soundness of a resolver circuit is provided. A shifter (101) receives excitation signal (EXC+) and excitation signal (EXC-); shifts the level of excitation signal (EXC+), excitation signal (EXC-), or both; and performs level shifting such that a period of time (T) that starts with one of two times in which, in the vicinity of the peak value of excitation signal (EXC+), excitation signal (EXC+) and excitation signal (EXC-) are at the same value and ends with the other of the two times is less than a prescribed threshold. A trigger generation circuit (102) generates a trigger (Trg) during said period of time (T). A control unit (103) determines whether there is an abnormality in the resolver circuit on the basis of the trigger (Trg).

Inventors:

Hiroo Goto
Satoshi Shigeta
Atsushi Okabe
Bright circle Kohei
Gojong Yuichiro

Application Number:

JP2013071149A

Publication Date:

October 25, 2016

Filing Date:

March 29, 2013

Export Citation:

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