System and method of vehicle system control based on a vehicle reference speed

摘要

A method for controlling a vehicle system includes determining a vehicle reference speed using an off-board-based input speed and an onboard-based input speed. The off-board-based input speed is representative of a moving speed of the vehicle system and is determined from data received from an off-board device. The onboard-based input speed is representative of the moving speed of the vehicle system and is determined from data obtained from an onboard device. The method includes using the vehicle reference speed to at least one of measure wheel creep for one or more wheels of the vehicle system or control at least one of torques applied by or rotational speeds of one or more motors of the vehicle system.

主权项

1. A method comprising:
determining a first vehicle reference speed of a vehicle system that is capable of traveling along a route using an off-board-based input speed and an onboard-based input speed, the off-board-based input speed representative of a first moving speed of the vehicle system and determined from data received from an off-board device the onboard-based input speed representative of a second moving speed of the vehicle system and determined from data obtained from an onboard device; controlling at least one of torque applied by or rotational speed of one or more motors of the vehicle system based at least in part on the first vehicle reference speed; determining an uncertainty parameter of the off-board-based input speed, the uncertainty parameter representative of a potential inaccuracy of the off-board-based input speed and of a range of potential actual speeds of the vehicle system, the uncertainty parameter derived from the data received from the off-board-based input device; modifying the off-board-based input speed using the onboard-based input speed responsive to determining that the onboard-based input speed is within the range of potential actual speeds that is represented by the uncertainty parameter; controlling a rotational speed at which a first axle of the vehicle system is rotated by a first motor of the one or more motors based on a throttle setting of the vehicle system and a second vehicle reference speed determined from a group of input speeds that includes an onboard-based input speed and an off-board-based input speed; and controlling a rotational speed at which at least a second axle of the vehicle system is rotated by a second motor based on the throttle setting and a second vehicle reference speed determined from the onboard-based input speed, wherein the rotational speeds of the first axle and the at least second axle are controlled based on the respective first and second vehicle reference speeds.