结构可靠度分析的蒙特卡罗边界法

本文提出——一种结构可靠度分析的新方法—蒙特卡罗边界法。算例表明,与其它几种蒙特卡罗法相比,边界法具有精度高、模拟次数少的特点。文未对结构可靠度分析方法的发展途径提出了我们独特的看法。     

增塑剂DBP技术经济指标的计算与评估

本文根据增塑剂DBP生产工艺原理,由微机在DBP工艺物料衡算的基础上,采用国内部分厂家的实际工艺参数。对各项工艺技术经济指标进行了理论计算和分析评估。为实现生产过程的优化控制及工艺技术的挖潜改造提供了一定的理论依据。     

岩石声发射特性的研究

本课题自1982年7月开始,至1986年7月结束。其中分为三个阶段:第一个阶段是准备阶段,对国内外的情况进行调研,建立本课题研究内容的测试系统,添置必须的仪器、换能器、刚性试验装置,进行测试系统的调试;第二阶段是室内实验,其目的在于研究应力应变全程曲线各阶段内的岩石声发射规律,用岩石声发射的多参数、多频率窗口变化规律探讨岩石试件破坏的机制,寻找岩体失稳最为可靠的参数,为现场岩体失稳预报建立坚实的理论基础;第三阶段是在牟定铜矿井下采场进行现场监测,其目的在于验证室内实验所获得的岩石声发射规律,并用这些规律去指导围岩稳定性监测,最后监测记录到了两次片帮事故。     

共管路并列运行蓄能机组间的相互影响

本文针对三机式抽水蓄能电站共管路并列运行机组间存在的相互干扰问题，提出了适用于求解具有复杂管路水轮机调节系统大扰动过程的方法。通过计算机仿真计算及分析，研究了羊湖电站抽水蓄能机组在丢弃负荷或失去动力后对电网及共管路系统正在运行机组的影响。     

喷油嘴的失效分析

本文从材料选择、切削加工和热处理工艺等方面,分析了喷油嘴失效形式,为提高喷油嘴寿命,提供可靠依据。     

An integration architecture for the automation of a continuous production complex

The development of integrated automation systems for continuous production plants is a very complicated process. A variety of factors must be taken into account, such as their different components (e.g., production units control systems, planning systems, financial systems, etc.), the interaction among them, and their different behavior (continuous or discrete). Moreover, the difficulty of this process is increased by the fact that each component can be viewed in a different way depending on the kind of decisions to be made, and its specific behavior. Modeling continuous production complexes as a composition of components, where, in turn, each component may also be a composite, appears to be the simplest and safest way to develop integrated automation systems. In order to provide the most versatile way to develop this kind of system, this work proposes a new approach for designing and building them, where process behavior, operation conditions and equipment conditions are integrated into a hierarchical automation architecture.     

Genetic learning and performance evaluation of interval type-2 fuzzy logic controllers

Type-2 fuzzy sets, which are characterized by membership functions (MFs) that are themselves fuzzy, have been attracting interest. This paper focuses on advancing the understanding of interval type-2 fuzzy logic controllers (FLCs). First, a type-2 FLC is evolved using Genetic Algorithms (GAs). The type-2 FLC is then compared with another three GA evolved type-1 FLCs that have different design parameters. The objective is to examine the amount by which the extra degrees of freedom provided by antecedent type-2 fuzzy sets is able to improve the control performance. Experimental results show that better control can be achieved using a type-2 FLC with fewer fuzzy sets/rules so one benefit of type-2 FLC is a lower trade-off between modeling accuracy and interpretability.     

磷酸二铵装置管式反应器复杂控制系统的DCS组态

宏福公司的磷铵装置是在厚重钙装置的基础上通过技术改造后形成年产120万吨DAP产品的大型现代化装置，其控制系统采用的是从日本横河机电公司（YOKOGAWA）引进的CENTUM-CS集散型控制系统。本文在介绍该装置中管式反直器部分复杂过程控制系统的基础上，详细描述了这个控制系统的DCS组态及相关参数设定。生产实践表明该系统的DCS组态方案切实可行。     

DM与6Sigma模式在软件过程改进中的应用

分析了数据挖掘技术和六西格玛模式的特点,以数据挖掘的输出作为六西格玛项目管理正馈和反馈数据的输入,建立改进产品或服务的过程循环,提出了"数据挖掘与六西格玛模式在软件过程改进中应用模型",为软件企业的过程能力提供一个阶梯式的改进框架.     

Centralized Modular Diagnosis and the Phenomenon of Coupling

This paper studies modular decomposition as an approach for failure diagnosis based on Discrete Event Systems. This paper also analyses the problem of coupling produced in the implementation of centralized modular diagnosers, as coupled diagnosers cannot carry out their own diagnosis task, when there is a failure in another subsystem sharing a common energy or material flow. In addition, we propose a method to avoid diagnoser coupling, by means of decoupling functions using non-local information with respect to the coupled diagnoser and generated in the diagnoser where the failure has been isolated.