| 摘要 |
PROBLEM TO BE SOLVED: To reduce the heat and the power consumption by a method in which a corresponding current application pattern is thinned/restored out of/to current application patterns in accordance with the deviation between a target revolution and an actual revolution. SOLUTION: A controller receives (101) a vehicle velocity (v) and sets (102) the target revolution Nr of a brushless motor corresponding to the vehicle velocity (v). The controller obtains (103) the real revolution NR of the brushless motor in accordance with a voltage value from an F/V converter. Then the real revolution NR is compared (104) with the target revolution Nr . If Nr < NR, one of current application patterns (1)-(6) for the brushless motor is thinned out (105). If Ne >=NR, one of the thinned-out current application patterns among the current application patterns is restored (106). Then the process is returned to the step 103 and the real revolution NR of the brushless motor is obtained again. |
