RCCN WeChat QrCode
Mobile WebSiteIn order to meet the specification frequency level, the automotive wiring harness test equipment must meet the set accuracy level or level. This allows them to be tested at their respective levels, and each "level" usually contains a series of single parameters to specify the test equipment. In addition to the tolerances of the recorded test values, there are some internal performance parameters of the device, such as background interference or dynamic range. As part of the test procedure, the test accuracy is mainly reflected in three different locations, first the high-frequency interface of the test equipment, the so-called "baseline value", and the other two are the interconnection points of the permanent connection and the channel connection.
The similarities and differences between the assembly planning and the pipeline of the automobile wiring harness in the virtual environment are: the automobile wiring harness is a flexible deformable body in the layout design stage and the assembly process planning stage; the pipeline can be treated as a flexible body in the layout design stage, and In the assembly process planning phase, it participates as a rigid body in the assembly process simulation of the entire product. Based on the above two points, the following scheme can be used for research: the layout design of the wiring harness and the assembly process planning are integrated, and the layout design process is the formation process of the assembly process, and the wiring harness assembly can be obtained by recording the layout design process. The process, while the assembly process planning and layout design of the pipeline are relatively independent.
From the perspective of business process, the wire harness assembly planning system in the virtual environment mainly includes five stages: data preparation stage, initial model establishment stage, interactive layout design and assembly process planning stage, planning result post-processing stage and process data on-site browsing stage. The data preparation level assembly planner converts the product assembly model, the automobile harness connector model, the line card model, and the pipeline connector model in the three-dimensional environment into neutral files through the conversion interface, and stores them in the local working directory, and simultaneously Based on the neutral file, the harness connector library, line card library and pipe connector library are built for subsequent modules. In the initial model establishment stage, the assembly planner guides the product assembly model neutral file in the virtual environment, and completes the model information reconstruction, and performs the assembly process planning of the product in the virtual environment. When the assembly process design of the automotive wiring harness is required, the modeling module of the wiring harness or the pipeline is started, and an initial model of the wiring harness or the pipeline is established, so that the subsequent module completes the harness or the pipeline by manipulating and dynamically modifying the initial model. Layout design and assembly process planning.
In order to improve the convenience and speed of model control, a method based on geometric constraint is proposed, which mainly includes precise positioning based on geometric constraints and dynamic navigation under geometric constraints to help designers quickly determine harness, pipeline and rigidity. The positional relationship between the structural members to assemble the wire harness in place.
In other words, all of these standards will be returned to their original starting line and will be revised to meet the requirements of a series of new applications that have emerged recently. For example, manufacturers of cabling systems now have to retest their components and also need to optimize or redesign them to meet different requirements. Of course, automotive wiring harness suppliers that provide test equipment for detecting wiring-related parameters must also make appropriate adjustments.
