基于数字孪生的虚拟仿真系统研究与应用

为解决全实物平台开发环境搭建困难、不便于测试与维护等问题，在研究PowerPC 处理器的实时嵌入式开发的基础上，采用数字孪生技术的设计思想，完成了一种拥有故障模拟与注入、协同仿真与模块化编程等功能的超实时虚拟仿真系统；提出了一种全数字仿真系统的设计与实现方法，基于数字孪生技术把硬件主板上的处理器以及外围设备虚拟化，集成到数字模型当中；各模型之间相互协同控制，实现CPU控制外部设备与动力学模型等设备之间的通信，以及数据收发、内存读写、串口输出等行为，最终实现与物理设备相同的功能；另外，采用了虚实结合的方法验证了运行结果的准确性，加快了软件执行效率，便于快速全面的系统开发与测试，从而更好地运用到各个领域当中。

Research and Application of Virtual Simulation Platform Based on Digital Twin

In order to solve the problems such as the difficulty in building a full physical platform development environment and the difficulty in testing and maintenance, a super real-time virtual simulation platform with the functions of fault simulation and injection, collaborative simulation and modular programming is completed by adopting the design idea of digital twin technology based on the research of real-time embedded development of PowerPC processor; A design and implementation method of all digital simulation system is proposed. Based on digital twin technology, the processor and peripheral devices on the hardware motherboard are virtualized and integrated into the digital model; The models cooperate with each other to control the communication between the CPU control external devices and the dynamic model and other devices, as well as data receiving and sending, memory reading and writing, serial port output and other behaviors, and finally achieve the same functions as the physical devices. In addition, the method of combining the virtual and the real is used to verify the accuracy of the running results, accelerate the software execution efficiency, facilitate rapid and comprehensive system development and testing, so as to better apply to various fields.