According to the principle of multi-body dynamics, using ADAMS module of ADAMS/CAR to form a complete vehicle model, and by using INSIGHT module used to design suspension hard point, the simulation analysis was carried out. Controllability and stability of the vehicle is to make evaluation and analysis by the experiments cornering with steer release. Ordinal optimization of before and after the optimization model , the results were analyzed, it demonstrated that optimized score significantly higher than before optimization.
With all sorts of advantages, the hydro-pneumatic suspension is receiving increasing attention. First, in this paper the mathematical model of 1/4 hydro-pneumatic suspension was built; Second, the suspension model was developed using the AMESim software; Finally, we get the influence of various hydro-pneumatic suspension performance parameters by changing their values and draw a conclusion. The result shows that this method is efficient and feasible.
Disc brake with the advantages of simple structure and good braking performance is widely used. But the design method of the existing brake needs a lot of calculation, test and modify repeatedly, manpower cost and long development cycle. This paper establishes a brake temperature minimum and maximum braking torque multi-objective optimization mathematical model, and then uses MATLAB optimization solution; and the finite element method (fem) is used for the transient temperature field validation. Research shows that the method is feasible, which can effectively improve the disc brake braking performance, and improve the efficiency of development.
With the higher speed of the car, brake disc temperature will increase sharply when emergency braking, and its performance is demanded more and more higher. According to the Heat Conduction Theory, a brake disc's Thermo-mechanical Coupling model is built using ABAQUS software to analyze the brake disc transient temperature field. The analysis results shows that there is temperature gradient along the radial direction and axial direction, the temperature of the surface nodes with braking time has a wavy change, and the simulation result can be used as the references of brake disc design and selection.
The driving fatigue monitoring system based on tree structure classifier is presented. The realtime fatigue monitoring system is established by training face and eye tree-structure classifiers which consists of many strong classifiers. Each strong classifier choose several weak classifiers by AdoBoost recursive method and each weak classifier is characterized by single Haar-like features. The whole Tree-structure is constructed by clustering branches recursive algorithm. Experiment has shown that the driving fatigue monitoring system based on tree-structure classifiers is very reliable. Introduction
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