Title:
左右輪独立制御の電気自動車の旋回等補助制御装置
Document Type and Number:
Japanese Patent JP6671988
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent that the torque of drive wheels at the outside of a turn becomes small compared with torque at the inside, and to prevent that a turn is disturbed by a torque difference between the inside and outside of the turn caused by a motor characteristic.SOLUTION: A turn assist control device is employed to an electric automobile having two electric motors 2, 2 for driving right and left drive wheels 1, 1, and two inverter devices 13, 13 which can independently control the two motors 2, 2. The turn assist control device comprises: rotational frequency comparison means 22 for comparing rotational frequency of the two motors 2, 2; maximum torque calculation means 23 for calculating maximum torque in a current rotational frequency of the motor 2 from the rotational frequency of the motor 2 whose compared rotational frequency is larger; and torque limit means 24 for limiting command torque which is imparted to the inverter devices 13, 13 of both the motors 2, 2 from torque distribution means 12a to the calculated maximum torque.SELECTED DRAWING: Figure 1
Inventors:
Akio Nakajima
Application Number:
JP2016015071A
Publication Date:
March 25, 2020
Filing Date:
January 29, 2016
Export Citation:
Assignee:
ntn corporation
International Classes:
B60L9/18; B60L15/20; H02P5/50
Domestic Patent References:
| JP2009038858A | ||||
| JP2009060685A |
Attorney, Agent or Firm:
Masashi Noda
Shuji Sugimoto
Shuji Sugimoto