| 摘要 |
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). |
