| 摘要 |
PURPOSE:To always grasp a position of a part to be controlled, by providing a power source selecting part for selecting a control power source supplied from a power source supply part and a power source supplied from a battery, and supplying the power source from the battery instead of said control power source to a position detecting part and a present position storage part, even if the control power source supplied to the control device is disconnected. CONSTITUTION:The titled device is provided with a power source selecting part 12 for selecting and supplying one of control power sources 9a, 9b or battery power sources 11a, 11b to a position detecting part 1 and a present position storage part 3. In case when the control power sources 9a, 9b are supplied from a power source supply part 8, the power source selecting part 1a selects the control power sources 9a, 9b as operating power sources 13a, 13b, and supplied to the position detecting part 1 and the present position storage part 3. Also, in case when the control power sources 9a, 9b cannot be supplied from the power source supply part 8, the power source selecting part 12 selects and supplies the battery power sources 11a, 11b as the operating power sources 13a, 13b. |
