| 摘要 |
PROBLEM TO BE SOLVED: To suppress a variation in a torque command value of an MG, which is caused by an influence of combustion of an engine, in a hybrid vehicle having the MG (motor) connected to a power transmission system of an engine.SOLUTION: A motor ECU 21 calculates a tentative torque command value of an MG 12 under PI control or the like so that a deviation of an actual rotating speed from a target rotating speed of the MG 12 can be small, and estimates disturbance load torque (load torque due to disturbance) of the MG 12 on the basis of a previous value of a torque command value and the actual rotating speed. The motor ECU 21 uses the disturbance load torque, corrects the tentative torque command value and obtains a final torque command value, and thus suppresses a rotational fluctuation of the MG 12 caused by the disturbance. At this time, a combustion frequency (the number of combustion per unit time) of the engine 11 is calculated as an attenuation frequency. Notch filter processing for attenuating a signal component in an attenuation frequency band is implemented in a process of calculating the disturbance load torque, whereby the disturbance load torque having the influence of an impact, which occurs during combustion of the engine 11, removed or reduced is calculated. |
