digital twin means an integrated multiphysics, multiscale, probabilistic simulation of a complex product, which functions to mirror the life of its corresponding twin.
数字孪生指的是对复杂产品进行的一种综合多物理、多尺度的概率模拟,进而反映孪生产品的生命周期。

Digital twin (DT) consists of three parts: physical product, virtual product and the linkage between physical and virtual product.
数字孪生包含三部分:实体产品,虚拟产品和其之间的连接。

Different from CAD (that exclusively focuses on the digital world) and IoT (that heavily concentrate on the physical world), DT is characterised by the two-way interactions between the digital and physical worlds, which can possibly lead to many benefifits.
与CDA(专门关注数字世界)和物联网(主要关注物理世界)不同,DT的特点是数字世界和物理世界之间的双向交互,这可能会带来很多优势。

In the past, digital twin is mostly used for fault diagnosis, predictive maintenance and performance analysis.
在过去,数字孪生主要用来做故障诊断,预测维护和性能分析。

实现制造的物理空间和信息空间的互联互通和智能化操作是实现智能制造的关键,也是智能调度的关键。

虚拟车间中包含了物理车间的全要素、全数据、全模型、全空间信息,这些信息通过要素、行为、规则三个层面的模型来描述。

数字孪生贯穿了结构设计、制造、装配和运行健康管理等全部阶段,是一套深入从设计研发到产品应用整个周期每个环节的新兴概念。

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