Su Lili

Research on Automobile ABS Detection Based on Alterable Adhesion Coefficient

The latest research of automobile ABS detection is devoted to create the test site with a special mix adhesion road, there is not currently a practical method of detection and performance evaluation for automobile ABS device, however ABS detection is an important one of automobile comprehensive performance detection, so the ABS detection method is researched on based on test-bed in the paper. The paper puts forward the method of stepless electricity simulation of the automobile inertia mass on the base of test-bed, and sets up mathematical model of that, then design the fuzzy control system of automobile test-bed, finally pointing to the method of electricity simulation, make a compare analysis to practical experiment data from the test site by SIMULINK simulation language.

Research on the Model and Finite Element Analysis of Vehicle Chassis Detection System Based on COSMOSWorks

The value of the chassis gap has an important impact on driving safety and handling stability of vehicle. Focusing on the efficiency and accuracy of the detection equipment for testing chassis gap, the controlling performance influenced by chassis gap and a novel tester model is presented. The finite element analysis is adopted to ensure the reliability of the tester proposed the Coulomb criterion and COSMOS / Works is selected to determine the safety factor as the time of the complex engineering analysis can be shorted by FFE technology which can minimize the design cycle, reduce the testing costs and improve product quality. Simulation results show that the dangerous place of the base assembly is the nearby regions of the double-rocker’s fixing holes where the limit stress is 2.398E+7N/m2 and the safety factor is about 26. The problem of detecting chassis gap accurately is resolved.

Experiments on the Stability Steering Performance of Semi-Trailer Model

Deflexion-angle is a crucial parameter for automobile controlling stability and safety. For constructing the basement of deflexion-angle detection, the model of semi-trailer train’s suspension is built and leaf spring dependent suspension is replaced with helical spring dependent suspension in the model. Balance suspension is adopted to distribute axle load uniformly. The mainly measuring parameters of stable steering performance including tractor speed, tractor’s lateral acceleration and semi-trailer train’s folding angle are also tested in the experiment. Comparison of experiment and simulation results show that there is consistency between the stable steering performance of established semi-trailer train’s model and real vehicle, and we can perform reliable analysis and research by the established semi-trailer train’s model.

Simulation and Experiment on the Semi-Trailer Stability Steering Performance Caused by Deflexion-Angle

Deflexion-angle is a crucial parameter for automobile controlling stability and safety. For constructing the basement of deflexion-angle detection, the model of semi-trailer train’s suspension is built and leaf spring dependent suspension is replaced with helical spring dependent suspension in the model. Balance suspension is adopted to distribute axle load uniformly. The mainly measuring parameters of stable steering performance including tractor speed, tractor’s lateral acceleration and semi-trailer train’s folding angle are also tested in the experiment. Comparison of experiment and simulation results show that there is consistency between the stable steering performance of established semi-trailer train’s model and real vehicle, and we can perform reliable analysis and research by the established semi-trailer train’s model.