MOTOR CONTROL DEVICE FOR ELECTRIC VEHICLE

Title:

MOTOR CONTROL DEVICE FOR ELECTRIC VEHICLE

Document Type and Number:

WIPO Patent Application WO/2013/065525

Kind Code:

A1

Abstract:

A computation unit (21) performs a map search for a required driving force (torque value) (Td) from the accelerator position (APO) and the vehicle speed (VSP). A multiplier (22) multiplies the vehicle speed (VSP) by the required driving force (Td) to obtain a required driving power (Pd). On the basis of a map relating to the relationship between combinations of required driving powers (Pd) and vehicle speeds (VSP) and the target motor speeds (tNm) at which the combinations can be achieved at the optimum power consumption rate, a computation unit (23) searches for the target motor speed (tNm) at which the combinations can be achieved at the optimum power consumption rate. A divider (24) divides the tNm by the Pd to find a target motor torque (tTm) to use to control the driving force of an electric motor, the tNm is divided by the VSP by a divider (25) to find the target gear ratio (i) necessary to achieve the target motor speed (tNm), and the result is used for speed control (electric motor speed control) of an automatic transmission.

Inventors:

UEDA NAOHARU (JP)
YONEDA KENJI (JP)

Application Number:

PCT/JP2012/077335

Publication Date:

May 10, 2013

Filing Date:

October 23, 2012

Export Citation:

Click for automatic bibliography generation Help

Assignee:

NISSAN MOTOR (JP)
JATCO LTD (JP)

International Classes:

B60L15/20; B60L50/16

Foreign References:

JP2011073573A	2011-04-14
JP2010036741A	2010-02-18
JPH05176419A	1993-07-13
JPH05176419A	1993-07-13

Other References: