Invention Grant
- Patent Title: Control device for electric motor vehicle and control method for electric motor vehicle
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Application No.: US15546096Application Date: 2015-01-26
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Publication No.: US10266069B2Publication Date: 2019-04-23
- Inventor: Akira Sawada , Ken Ito , Takashi Nakajima , Yuji Katsumata , Hiroyuki Komatsu
- Applicant: NISSAN MOTOR CO., LTD.
- Applicant Address: JP Yokohama-shi
- Assignee: NISSAN MOTOR CO., LTD.
- Current Assignee: NISSAN MOTOR CO., LTD.
- Current Assignee Address: JP Yokohama-shi
- Agency: Foley & Lardner LLP
- International Application: PCT/JP2015/052080 WO 20150126
- International Announcement: WO2016/120978 WO 20160804
- Main IPC: B60L15/20
- IPC: B60L15/20 ; B60L11/18 ; B60L7/14 ; B60L7/22

Abstract:
A control device for electric motor vehicle uses the motor as the traveling driving source. The control device for electric motor vehicle is configured to decelerate by the regenerative braking force from the motor. The control device for electric motor vehicle is configured to detect the amount of the accelerator operation, detect the motor rotation speed proportionate to the traveling speed of the electric motor vehicle, and calculate the motor rotation speed estimated value according to the state of the electric motor vehicle. Additionally, the control device for electric motor vehicle is configured to detect or estimate the resistance component unrelated to the gradient from the vehicle state and correct the motor rotation speed estimated value according to the resistance component. Further, the control device for electric motor vehicle is configured to calculate the feedback torque to stop the electric motor vehicle based on the motor rotation speed and calculate the feedforward torque to compensate the feedback torque based on the corrected motor rotation speed estimated value. The control device for electric motor vehicle is configured to calculate the motor torque command value and control the motor based on the calculated motor torque command value. When the amount of the accelerator operation is equal to or less than the predetermined value and the electric motor vehicle is just before the stop of the vehicle, the motor torque command value is converged to 0 based on the feedback torque and the feedforward torque together with the reduction in the traveling speed.
Public/Granted literature
- US20180015840A1 CONTROL DEVICE FOR ELECTRIC MOTOR VEHICLE AND CONTROL METHOD FOR ELECTRIC MOTOR VEHICLE Public/Granted day:2018-01-18
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