飞机柔性工装数字孪生几何模型构建方法

Construction Method of Digital Twin Geometry Model for Aircraft Flexible Tooling

飞机柔性工装受温度、工件状态、装配工艺等因素影响,常处于时变状态,其孪生模型动态信息量大,建模复杂。提出了一种基于有限状态机的工装数字孪生几何模型建模方法,通过实时数据采集与预处理、定义状态及其转移机制、参数化几何实体建模实现了实物工装在数字空间的动态映射,为基于数字孪生模型的虚拟仿真奠定基础。以翼身对接试验平台为对象,建立对接调姿机构的数字孪生几何模型,验证了该方法的有效性。

The state of aircraft flexible tooling is affected by temperature,workpiece state,assembly process and other factors,and is often in a time-varying state.Its twin model has large dynamic information and is complex to build.A modeling method of digital twin geometric model based on finite state machine is proposed in this paper.The dynamic mapping of physical tooling in digital space is realized by means of real-time data acquisition and preprocessing,definition of state and its transfer mechanism,and parameterized geometric entity modeling,which lays a foundation for virtual simulation based on digital twin model.Taking the wing and fuselage docking platform as the object,digital twin geometric models of the wing adjustment mechanisms are established to verify the effectiveness of the method.