Patent ID: 9540005
Date: 2017-01-10
CPC Classifications: B60W,G01C,G05D

Claim:
1. A method for controlling speed of a vehicle, comprising the steps of: determining, with a guidance system, an arrival time error (ATE) for a required time of arrival (RTA) and a projected trajectory according to a travel plan with a current speed profile having a plurality of regions, each with a respective speed adjustment parameter (SAP) and a respective SAP value relative to a nominal speed profile; selecting, with the guidance system, when the ATE is greater than a threshold, one of the regions as a selected region for modification based on a priority order of the regions; modifying, with the guidance system, the current speed profile by adjusting the respective SAP value for the selected region according to the respective SAP in order to decrease the ATE; and implementing, with the guidance system, the modified speed profile.