起伏のあるソフトグランド上における車輪の転動抵抗の電気自動計測

抄録

A microcomputer-controlled wave-forming device was made to undulate soft ground. With the use of this device soft ground was undulated into a number of sine waves with different wave lengths but constant amplitude. The rolling resistance of wheels on such undulated soft grounds was measured-with an apparatus to measure the rolling resistance of the wheel and a data processing system.
The averaged driving torque and tractive force attain to maximum values, when the crest part of the road surfaces has the same radius of curvature as that of the wheel. These values approach gradually to those of flat surface running as the wave length becomes longer. It was found that when the wave length becomes very short, the values of the averaged driving torque and tractive force become even smaller than the values on a flat surface.