产品数字化系统, 结构序, 信息时效熵, 信息准确熵

The relationship between dissipative structure and order degree was discussed,information aging entropy and information accuracy entropy were proposed,which can be used to measure order degree of system structural order and was related closely to orderliness of system structure in a product digital system. Sequentially, information aging entropy and information accuracy entropy became important order parameters which evaluated orderliness of system structure of the product digital system. The calculation methods of information aging entropy and information accuracy entropy and system structure order degree were proposed and the calculation model of structural order degree of product digital system was given. A design example of stamping tool of sheet metal was completed respectively by introducing new product digital system of model-oriented design pattern and product digital system of traditional patterns, both system structure order degrees were computed and analyzed and the validity of calculation model of structural order degree was verified, which provides the theoretical lesson for quantitatively research evolution feature of digital system products based on dissipative structure theory.

product digital system, structure orderliness, information aging entropy, information accuracy entropy