基于生产模型的制造执行系统平台研究

介绍了一个基于SP95标准的制造执行系统平台,分别从基础框架、模型构建等角度描述了系统的设计思想,并阐述了系统涉及的基于事件的平台运行机制、事件模型设计等关键设计技术。开发的基于数字化生产模型的制造执行系统平台具有一定的可集成性、可扩展性和可重构性,可适用于装配生产企业MES系统的定制与快速开发。

The design of cascaded resistors in a new analog switch two-step ADC architecture

In this paper we introduce a new Half-flash analog switch ADC architecture. And we discuss two methods to design the values of the cascaded resistors which generate the reference voltages. Derailed analysis about the effect of analog switches and comparators on reference voltages, and the methods to set the resistor values and correspond;ng voltage errors are given.