PDM(Product Data Management)系统是制造企业信息化工程的重要集成平台。通过对一家制造企业PDM应用案例的分析,探讨PDM系统存在的问题。针对文档管理,讨论基于XML(eXtensible Markup Language)的PDM系统集成框架。阐述以移动代理、分...PDM(Product Data Management)系统是制造企业信息化工程的重要集成平台。通过对一家制造企业PDM应用案例的分析,探讨PDM系统存在的问题。针对文档管理,讨论基于XML(eXtensible Markup Language)的PDM系统集成框架。阐述以移动代理、分布式四层结构为特征网络化文档管理的运用。展开更多
提出了一种基于混沌遗传算法的计算圆度误差的新方法.它利用混沌优化方法的遍历性和随机性,通过混沌扰动操作可克服传统遗传算法中的早熟问题,确保算法的全局收敛性.该方法满足最小条件原理,其计算结果的精确度非常高,理论上可以获得全...提出了一种基于混沌遗传算法的计算圆度误差的新方法.它利用混沌优化方法的遍历性和随机性,通过混沌扰动操作可克服传统遗传算法中的早熟问题,确保算法的全局收敛性.该方法满足最小条件原理,其计算结果的精确度非常高,理论上可以获得全局最优解.实例计算表明,这种算法简单明确,具有精度高、收敛速度快、易于计算机程序实现和推广应用等特点.
Abstract：
A new method for calculating the roundness error based on chaos genetic algorithms is proposed. The system utilizes the ergodicity and randomness of chaos optimal method and by means of chaos stir operation, which can overcame the problem of premature convergence in traditional genetic algorithms and ensured an convergence of the algorithms. The method satisfies the principle of the least condition, the precision of calculating result is very high and can find .the global optimal solution. An actual calculated example showed that this method is simple and clear and it has features of high precision and fast convergent speed as well as using computer easily and popularizing application easily.展开更多
文摘PDM(Product Data Management)系统是制造企业信息化工程的重要集成平台。通过对一家制造企业PDM应用案例的分析,探讨PDM系统存在的问题。针对文档管理,讨论基于XML(eXtensible Markup Language)的PDM系统集成框架。阐述以移动代理、分布式四层结构为特征网络化文档管理的运用。
文摘提出了一种基于混沌遗传算法的计算圆度误差的新方法.它利用混沌优化方法的遍历性和随机性,通过混沌扰动操作可克服传统遗传算法中的早熟问题,确保算法的全局收敛性.该方法满足最小条件原理,其计算结果的精确度非常高,理论上可以获得全局最优解.实例计算表明,这种算法简单明确,具有精度高、收敛速度快、易于计算机程序实现和推广应用等特点.
Abstract：
A new method for calculating the roundness error based on chaos genetic algorithms is proposed. The system utilizes the ergodicity and randomness of chaos optimal method and by means of chaos stir operation, which can overcame the problem of premature convergence in traditional genetic algorithms and ensured an convergence of the algorithms. The method satisfies the principle of the least condition, the precision of calculating result is very high and can find .the global optimal solution. An actual calculated example showed that this method is simple and clear and it has features of high precision and fast convergent speed as well as using computer easily and popularizing application easily.
