基于数字孪生的智能车间系统仿真加速测试方法

Simulated Acceleration Testing of Intelligent Workshop System Based on Digital Twin

摘要:

为解决当前制造系统软件可靠性仿真测试时间长、测试环境难以搭建等问题,提出采用数字孪生技术与智能车间系统仿真加速测试相结合的方法。建立智能车间高保真数字孪生模型替代现实生产车间系统用于制造系统软件的可靠性仿真测试,首先要构建包含产品、设备资源、工艺流程等系统级仿真模型。同时,为仿真车间生产事件流程,在模型中,还需结合生产实际情况,设置设备间通信协议、通信数据以及生产线事件及队列顺序,真实模拟系统运行环境。通过构建步进电机产线数字孪生模型,仿真加工装配流程,运行智能车间系统软件,采用仿真时钟推进机制开展加速测试,验证了该方法的有效性和实用性,对开展工业系统软件高保真快速测试评估具有一定的借鉴意义。

Abstract:

In order to solve the problem of long time and difficulty to set up test environment of reliability simulation test of current manufacturing system software, the method of combining digital-twin technology and simulation acceleration test is proposed. To establish the high-fidelity digital twin model of the intelligent workshop instead of the real workshop system for reliability simulation test of the manufacturing system software, the system-level simulation model including products, equipment resources and process flow should be constructed. At the same time, in order to simulate the workshop production events process, the communication protocol and communication data between devices, as well as the sequence of production line events and queues should be set according to the actual production situation to simulate the operating environment of the system. By constructing digital twin model of stepping motor production line, simulating machining assembly process, running intelligent workshop system software, and using simulation clock propulsion mechanism to accelerate testing, the effectiveness and practicability of this method are verified, which can be used for reference in the high-fidelity testing of industrial system software.