System and method for controlling electric motors to function as a virtual electronic locking differential
AssigneeGM Global Technology Operations LLC
InventorsShaochun YE, Robert L. Morris, Jordan Billet
Life of this patent
Estimating the term…
Abstract
A system includes a reference speed module and a motor control module. The reference speed module is configured to determine a reference speed range based on a speed of a left wheel of a pair of front or rear wheels of a vehicle and a speed of a right wheel of the pair of front or rear wheels. The right wheel is disconnected from the left wheel. The motor control module is configured to control at least one of a first electric motor and a second electric motor based on the reference speed range. The first electric motor is connected to the left wheel. The second electric motor is connected to the right wheel.
Claims20
A system comprising:
- a reference speed module configured to determine a reference speed range based on a speed of a left wheel of a pair of front or rear wheels of a vehicle and a speed of a right wheel of the pair of front or rear wheels, wherein the right wheel is disconnected from the left wheel, and
- a motor control module configured to control at least one of a first electric motor and a second electric motor based on the reference speed range, wherein:
- the first electric motor is connected to the left wheel;
- and
- the second electric motor is connected to the right wheel.
A system comprising:
- a reference speed module configured to determine a reference speed range based on at least one of a speed of a left wheel of a pair of front or rear wheels of a vehicle and a speed of a right wheel of the pair of front or rear wheels, wherein the right wheel is disconnected from the left wheel;
- and
- a motor control module configured to:
- control one a first electric motor and a second electric motor based on the reference speed range when one of the left and right wheel speeds is outside of the reference speed range, wherein the one of the first and second electric motors is connected to the one of the left and right wheel speeds;
- and
- control the other one of the first and second electric motors based on an axle torque request, wherein the other one of the first and second electric motors is connected to the other one of the left and right wheel speeds.
A vehicle comprising:
- a left wheel;
- a right wheel disconnected from the left wheel, the left and right wheels forming a pair of front or rear wheels of the vehicle;
- a first electric motor connected to the left wheel;
- a second electric motor connected to the right wheel;
- a reference speed module configured to determine a reference speed range based on at least one of a speed of the left wheel and a speed of the right wheel;
- and
- a motor control module configured to:
- control one the first and second electric motors based on the reference speed range when one of the left and right wheel speeds is outside of the reference speed range, wherein the one of the first and second electric motors is connected to the one of the left and right wheel speeds;
- and
- control the other one of the first and second electric motors based on an axle torque request, wherein the other one of the first and second electric motors is connected to the other one of the left and right wheel speeds.
Dependencies are inferred from the claim text.