Backup velocity estimation utilizing traction device speed

摘要

A velocity estimation method and system is disclosed. The method may include receiving a location signal indicative of a location of the machine and estimating the velocity of the machine based on a change in the location of the machine over a period of time. The method may further include determining a loss of the location signal, detecting a traction device speed of the machine, and selectively estimating the velocity of the machine based on the traction device speed when the location signal is determined to be lost.

主权项

1. A method of estimating velocity of a machine, comprising:
receiving, from a locating device, a location signal indicative of a location of the machine; estimating, by a processor, the velocity of the machine based on a change in the location of the machine indicated by the received location signal over a period of time; determining, by the processor, a loss of the location signal; detecting, by the processor, a traction device speed of the machine; detecting, by the processor, an acceleration of the machine; detecting, by the processor, steering of the machine; determining, by the processor, whether the traction device speed is unreliable, wherein the traction device speed is determined as unreliable when the detected steering exceeds a predetermined threshold; and when the location signal is determined to be lost and the traction device speed is determined to be unreliable, estimating, by the processor, the velocity of the machine based on the detected acceleration.