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As one kind with the best comprehensive performance of various honeycombs, triangular honeycomb is an important structure to achieve lightweight. Focusing on the deficiency of the non-optimized macro-material distribution in uniform triangular honeycomb, a design and modeling method of variable-density triangular honeycomb structures was proposed. With a three-point bending beam as the design object,...
A new 3D path planning algorithm of unmanned ground vehicle is proposed. First of all, an approach for the complex 3D unstructured scene of outdoor unmanned ground vehicle is structured by Elevation model which has traits of robustness and high-efficiency. Secondly, the Ant colony algorithm to search the best path is employed. Combined with the process costing and group intelligence of Ant colony...
In this paper, an efficient least squares norm based method for the passivity enforcement of delayed rational macromodels is presented. The least squares norm based method and the energy norm based method are described and compared. A new formulation for the objective function of energy norm type is also derived, which shows that least squares norm and energy norm are mathematically equivalent. This...
Statistical data shows that a driver who was lack of the ability to discover potential risk situation and safe driving awareness was more probably to cause an accident. The safe driving awareness was considered as a factor in contributing to vehicle crashes. In this study, a creative method to improve safety awareness based on driving simulator was proposed. Firstly, the definition and classification...
Vehicle driving simulator has been popularly used for researching on traffic safety. Modeling the traffic scene is one of the key technologies. In this study, traffic scene editor is proposed to solve this problem by editing the parameter of each traffic element. The five important functions of it are also designed. By analyzing the advantage of XML structure; XML is suggest to storage the edit data,...
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