| 摘要 |
PROBLEM TO BE SOLVED: To prevent operation failure of transmission electric motor at start of drive of the transmission electric motor in a working vehicle executing pulse width modulation control of the transmission electric motor. SOLUTION: A control device outputs a control signal of a prescribed pulse width irrespective of magnitude of deviation as for a first control signal to the transmission electric motor during execution of pulse width modulation control and the first control signal to the transmission electric motor when deviation of HST actual output from HST target output exceeds a dead band range from a non-operation state of the transmission electric motor in which the deviation is in the dead band range. COPYRIGHT: (C)2010,JPO&INPIT
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