SYSTEM AND APPROACH FOR DYNAMIC VEHICLE SPEED OPTIMIZATION

摘要

A system and approach for a vehicle system. The vehicle system may include a vehicle, a propulsion device (e.g., a combustion engine or electric motor), and a controller. The propulsion device may at least partially power the vehicle. The controller may be in communication with the propulsion device and may control the propulsion device according to a target speed of the vehicle. The controller may include a model of energy balances of the vehicle and may use the model to estimate energy losses over a travel horizon of the vehicle. The controller may optimize a cost function over the travel horizon of the vehicle based at least in part on the estimated energy losses to set an actual speed for the vehicle. The estimated energy losses may include one or more of aerodynamic drag, vehicle friction, and conversion efficiency from the propulsion device.

主权项

1. A vehicle system comprising:
a vehicle; a propulsion device configured to at least partially power the vehicle; and a controller in communication with the propulsion device for controlling the propulsion device according to a target speed of the vehicle; and wherein:
the controller includes a model of energy balances of the vehicle and is configured to use the model to estimate energy losses over a travel horizon of the vehicle; andthe controller is configured to optimize a cost function over the travel horizon of the vehicle based at least in part on the estimated energy losses to set an actual speed for the vehicle.