Patent ID: 11970154
Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A control system for controlling wheel flare of one or more wheel in a vehicle, comprising:
a wheel slip control loop including a wheel slip controller configured to control wheel slip based on wheel speed measured at one or more wheels of the vehicle;
a wheel flare control loop including a wheel flare controller configured to control wheel flare based on transmission output speed at an output of a transmission of the vehicle, the wheel flare controller configured to sample the transmission output speed of the transmission of the vehicle at a sampling rate of 6.25 ms or less; and
a controller configured to select one of the wheel slip controller to control the wheel slip and the wheel flare controller to control the wheel flare during operation of the vehicle, the controller configured to select the wheel flare controller to control the wheel flare for a predetermined period in a range between 25 ms and 250 ms, and to select the wheel slip controller after the predetermined period, wherein,
the wheel slip control loop includes a first amplifier, a first summer, and a first plant, the first amplifier is configured to multiply an output of the first summer by a drive ratio and output an output speed reference to the wheel slip controller, and the wheel slip controller is configured to output a wheel slip control torque command to the first plant, and
the wheel flare control loop includes a second amplifier, a second summer, and a second plant, the second amplifier is configured to multiply a wheel speed reference by the drive ratio and output the output speed reference to a non-inverting input of the second summer, the second summer is configured to supply an output to the wheel flare controller, and the wheel flare controller is configured to output a wheel flare control torque command to the second plant.