关键词: 汽车检测；侧倾试验台；侧倾稳定性；液压系统；测控系统

Abstract: To address the drawbacks of conventional automobile roll-over test benches, including aging hydraulic pipelines, low detection accuracy and delayed data processing, this paper conducts research on the development and application of a control system for a multi-functional automobile roll-over test bench. Integrating the mechanical bench, hydraulic system and measurement-control system, the system adopts a parallel hydraulic pipeline structure and a two-stage pressure-regulating circuit design, together with high-precision inclination and weighing sensors, to realize accurate detection for roll-over tests of vehicles up to 32 t, with a measured inclination accuracy of 0.1°. The test bench collects and analyzes vehicle roll angle, axle load and various state parameters in real time. Real-vehicle verification is carried out on a certain sport utility vehicle (SUV) model. The test results of left and right-hand vehicle roll-over show favorable repeatability, and the test conclusions comply with the requirements of Safety Specifications for Motor Vehicles Operating on Roads (GB 7258-2017). The retrofitting scheme of this control system possesses favorable engineering practicability and provides reliable data support for vehicle structural optimization design and safety performance evaluation.

Key words: vehicle detection; vehicle roll test bench; roll stability; hydraulic system; measurement-control system