System and method of vehicle system control
First Claim
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1. A method comprising:
- obtaining an onboard-based input speed and an off-board-based input speed of a vehicle system;
controlling a torque of at least a first axle of the vehicle system based at least in part on a throttle setting of the vehicle system, the onboard-based input speed, and the off-board-based input 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 speeds of the vehicle system; and
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 speeds represented by the uncertainty parameter.
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Abstract
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.
21 Citations
12 Claims
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1. A method comprising:
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obtaining an onboard-based input speed and an off-board-based input speed of a vehicle system; controlling a torque of at least a first axle of the vehicle system based at least in part on a throttle setting of the vehicle system, the onboard-based input speed, and the off-board-based input 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 speeds of the vehicle system; and 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 speeds represented by the uncertainty parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system comprising:
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one or more processors configured to obtain an onboard-based input speed and an off-board-based input speed of a vehicle system, the one or more processors also configured to control a torque of at least a first axle of the vehicle system based at least in part on a throttle setting of the vehicle system, the onboard-based input speed, and the off-board-based input speed, wherein the one or more processors are configured to determine 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 speeds of the vehicle system, the one or more processors also configured to modify 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 speeds represented by the uncertainty parameter. - View Dependent Claims (10, 11, 12)
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Specification