Nathan D. Dockter,Kent M. Recker,Kent L. Thompson,Curt T. Graham
申请号：
US16056712
公开号：
US20190047541A1
申请日:
2018.08.07
申请国别(地区):
US
年份:
2019
代理人:
摘要：
Self-propelled vehicles that include swiveling caster wheels and independent drive wheels are disclosed. The self-propelled vehicles are selectively steered in a caster wheel steering mode or a drive wheel steering mode. The vehicle includes a steering position sensor to measure the position of the steering system. A control unit varies the rotational speed of first and second drive wheels based at least in part of the signal from the steering position sensor.
