Patent ID: 11958363
Assignee: FORD GLOBAL TECHNOLOGIES, LLC
Field: Transport (Mechanical engineering)
Classification: CPC B  G  H  Y | IPC B  G  H

Claim 8:
9. A vehicle comprising:
a driven axle;
first and second electric machines configured to power the driven axle, wherein the first and second electric machines have rotor shafts constrained to rotate in unison, and the first and second electric machines have first and second speed sensors, respectively; and
a controller programmed to:
in response to activation of the vehicle, select one of the first and second speed sensors having a greatest number of accumulated points for a predefined sampling duration, wherein the accumulated points for each of the first and second speed sensors is based on (i) a variance that is a ratio of a speed value for the speed sensor and an average speed value for both of the speed sensors and (ii) a noise factor associated with the speed sensor; and
in response to the electric machines being in speed control, command speeds to the first and second electric machines based on a difference between a target speed of the electric machines and a measured speed of the one of the first and second speed sensors but not the other of the first and second speed sensors.