US 12,759,414 B2 · Vehicle traction control system

Abstract

A vehicle control system includes a traction control unit, a front motor control unit, and a rear motor control unit. The traction control unit controls traction of each of a plurality of wheels. Each motor control unit controls a corresponding one of a plurality of rotating electric machines that transmit or receive torque to and from the plurality of wheels on the basis of axle speed information received from the traction control unit. The traction control unit sets a threshold axle speed for determining whether it is necessary to perform predetermined torque control, which is performed by each motor control unit to eliminate a slip of each wheel, between a target axle speed and a vehicle speed and output axle speed information regarding the threshold axle speed to each motor control unit.

Claims6

Dependent claims

A vehicle control system comprising:

a processor configured to:
control traction of a driving wheel when a target axle speed is detected;
and
control an operation of a rotating electric machine configured to transmit and receive torque to and from the driving wheel on a basis of information received from the driving wheel,
wherein the driving wheel is configured to
set a threshold axle speed for determining an end of execution of predetermined torque control, which is performed to eliminate a slip of the driving wheel, between the target axle speed and a vehicle speed and
output information regarding the threshold axle speed to the processor, and
wherein the processor is configured to set the threshold axle speed during acceleration to a greater one of a value obtained by subtracting a first predetermined value from the target axle speed and a predetermined lower threshold value.

5 more elements

Dependencies are inferred from the claim text.

Vehicle traction control system

Life of this patent

Vehicle traction control system

Life of this patent

Abstract

Claims6