| 摘要 |
<P>PROBLEM TO BE SOLVED: To simplify a control system which suppresses overheating of the electric motor. <P>SOLUTION: The control system includes: operation area determination means 2 which determines in which area, either a first operation area where heat generation of a coil is relatively large or a second operation area where heat generation of the coil is relatively small, operation is performed in the operation area expressed with torque and number of rotations of a motor 10; a first operation timer 3 which detects a first operation time which is an operation time in which the motor 10 is continuously operated in the first operation area; output limitation means 4 which limits the operation area of the motor 10 to the second operation area when the first operation time detected by the first operation timer 3 exceeds a first predetermined time; an output limitation timer 5 which detects an output limitation time which is a duration time where the operation area of the motor 10 is limited to the second operation area; and output limitation cancel means 6 which cancels the limitation of the operation area when the output limitation time detected by the output limitation timer 5 exceeds a second predetermined time. <P>COPYRIGHT: (C)2013,JPO&INPIT |
