| 摘要 |
PROBLEM TO BE SOLVED: To provide a driving force switching device of high reliability which does not make travelling impossible even in case of a breakdown of a position switch which detects travelling conditions, or in case of a short circuit of an electric contact. SOLUTION: The means of controlling the actuator of the driving force switching device stores a current pattern of a position switch. When the next pattern differs from the pattern which is estimated from the pattern map, irregularities are detected. COPYRIGHT: (C)2007,JPO&INPIT
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