Feasibility analysis and verification of standard load spectrum of wheel-coupled road simulation test rig

The wheel-coupled road simulation test rig has a wide range of applications in whole-vehicle test. Obtaining the drive spectrum of the wheel coupling road simulation rig quickly and accurately has always been a key issue in the industry. This paper reviewed the basic theory of test rig, and discussed the feasibility of the rig's standard spectrum. Then, this paper took a domestic car model as the test vehicle and collected actual road data from the Yancheng test site. By analyzing and processing these data, the paper verified the feasibility of the standard load spectrum for the wheel-coupled test rig. This research provides theoretical and empirical support for the development of a standard load spectrum for wheel-coupled road simulation rigs.