Title:
CONTROL DEVICE FOR VEHICLE MOUNTED WITH ELECTRIC MOTOR
Document Type and Number:
Japanese Patent JP2021097512
Kind Code:
A
Abstract:
To provide a control device, for a vehicle which has an electric motor as a drive power source, capable of curbing fluctuation of noise generated from the electric motor.SOLUTION: In a predetermined peak frequency band Fp which includes a peak of temporal vertical fluctuation in pulsation of torque of an electric motor MG, suppression waveform current generating torque of an opposite phase to pulsation of torque of the electric motor MG is superimposed on the drive current of the motor MG. In a lower flanking frequency band FnL and an upper flanking frequency band FnH flanking the peak frequency band Fp, adjustment waveform current generating torque of an identical phase to the pulsation of the torque of the electric motor MG is superimposed on the drive current of the motor MG. Thus, a control device can suppress fluctuation in noise of the electric motor MG between the peak frequency band Fp and the lower flaking frequency band FnL and the upper flaking frequency band FnH flaking the peak frequency band Fp and thereby curbing fluctuation in noise which disturbs concentration of an occupant because the same sounds similar to a warning sound calling attention of the occupant.SELECTED DRAWING: Figure 3
Inventors:
UCHIBORI NAO
Application Number:
JP2019227778A
Publication Date:
June 24, 2021
Filing Date:
December 17, 2019
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
H02P6/10; B60K6/48; B60L3/00; B60L9/18; B60L15/20; B60W10/08; B60W20/17
Attorney, Agent or Firm:
Haruyuki Ikeda
Kojiro Ikeda
Kojiro Ikeda