An insight into mobility power efficiency of an automated guided vehicle performing in the presence of a hinged trailer

Abstract

This is the first research that it conceptually appraises new technical paradigm (mobility power efficiency) for automated guided vehicle (AGV) of tandem robotic transportation system. Pulling operations were conducted based on changes of operational parameters of the AGV speed, tire air pressure, and trailer load. Results of the operations for the mobility power efficiency (5.54–28.67 %) were compared to those of former technical paradigm (tractive power efficiency). Reliable data obtained from exponential model indicated that the AGV slippage values for the maximum mobility power efficiency were higher (averagely 3.1 times) than those of the maximum tractive power efficiency. As traction ability of the AGV in the pulling operations is more important than its mobility ability, the tractive power efficiency must be considered as main technical paradigm. The mobility power efficiency must be considered as main technical paradigm for free motion of the AGV without drawbar pull. Meanwhile, mobility power loss values indicated that 1.19–33.52 % of the AGV mobility power were wasted. These research results are advantageous for researchers, engineers, and supervisors concerned with the AGV not only operated in inside and outside robotic production lines of manufacturing sectors, but also employed in intelligent warehousing systems and wharf container terminals.