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传统方法建立的空气悬架数学模型具有普遍适用性,然而对于具体的悬架匹配性则不理想,所建立的悬架动态系统仿真误差大。运用逆向工程技术对某电控空气悬架实体进行三维模型重构,后期可根据三维模型对数学模型修正以提高仿真的精度。以空气弹簧为例详细介绍建模过程:包括点云数据的获取、处理,特征点的提取及曲线拟合、曲面重构。通过试验验证逆向工程建立的悬架三维模型精度高,符合预期要求,基于UG软件的模型测量数据可作为悬架集成设计和实验研究的基础。
The air suspension mathematical model established by the traditional method has universal applicability, but it is not ideal for the specific suspension matching, and the simulation error of the established suspension dynamic system is large. Reverse engineering is used to reconstruct the 3D model of an electronically controlled air suspension entity. Later, the mathematical model can be modified according to the 3D model to improve the simulation accuracy. Taking air spring as an example, the modeling process is introduced in detail: including the acquisition and processing of point cloud data, the extraction of feature points, curve fitting and surface reconstruction. The experimental results show that the three-dimensional model of the suspension established by reverse engineering has high accuracy and meets the expected requirements. The model measurement data based on UG software can be used as the basis of the integrated design and experimental research.