VIBRATION SUPPRESSION CONTROLLER OF ELECTRIC VEHICLE

摘要

PROBLEM TO BE SOLVED: To provide a vibration suppression controller capable of combining the competing requests of pulsation suppression requested steadily by rotation feedback vibration suppression control, and disturbance suppression effect requested when disturbance is inputted.SOLUTION: When a motor torque feedback control amountΔTm_fb obtained by rotation feedback for vibration suppression control is less than (5 Nm), out of theΔTm_fb and a specific frequency component removed motor torque feedback control amountΔTm_ffa obtained by removing specific frequency components from theΔTm_fb in order to suppress pulsation by engine ripple torque, theΔTm_ffa is selected as a final motor torque feedback control amountΔTm_ffb, and theΔTm_fb is selected as theΔTm_ffb when theΔTm_fb is (5 Nm) or more. The sum value of theΔTm_ffb(ΔTm_ffa orΔTm_fb) and a filtered target motor torque Tm*_f is used as a motor torque command value Tm*' for motor control.