APDT-00三极放电管全自动打印机的研制

介绍了新近研制的APTD - 0 0三极放电管全自动打印机的结构特点及整机设计的关键技术 ,阐述了自动上料机构、打印机构和控制电路的设计     

Visual C#在气象自动站要素统计查询系统中的应用

肇庆市气象自动站要素统计查询系统是针对肇庆市37个气象自动站和该市气象台相关业务而通过Visual C#设计实现的．系统可以实现查询、统计各个气象自动站的要素数据。通过举例介绍Visual C#在肇庆市气象站要素统计查询系统中局部放大、控件数组和抓屏三个关键模块的应用，说明了如何利用Visual C#的强大功能，快速开发软件。对使用Visual C#的编程人员有一定的参考价值。     

Integrating scheduling and control functions in computer integrated manufacturing using artificial intelligence

Proper integration of scheduling and control in Flexible Manufacturing Systems will make available the required level of decision-making capacity to provide a flexibly-automated, efficient, and quality manufacturing process. To achieve this level of integration, the developments in computer technology and sophisticated techniques of artificial intelligence (AI) should be applied to such FMS functions as scheduling. In this paper, we present an Intelligent Scheduling System for FMS under development that makes use of the integration of two AI technologies. These two AI technologies — Neural Networks and Expert Systems — provide the intelligence that the scheduling function requires in order to generate goodschedules within the restrictions imposed by real-time problems. Because the system has the ability to plan ahead and learn, it has a higher probability of success than conventional approaches. The adaptive behavior that will be achieved contribute to the integration of scheduling and control in FMS.     

装载机多路阀操纵系统改进设计

论述了装载机现行的操纵机构,分析了液压先导操纵阀的应用局限性。介绍了气动助力器的工作原理,通过对操纵杆上的期望力分析计算获得满足性能要求的操纵力。装载机操纵机构借助助力器的助力作用,可以用较小的操纵力对装载机进行轻松操纵,从而使操作轻便灵活。     

发育有切割井眼结构面的井壁稳定性评价研究

切割井眼结构面的存在弱化了井壁的稳定性，常规完整井眼的井壁稳定分析理论已不能完全适用于受结构面切割的井眼。基于摩尔-库仑理论，在分析结构面应力状态的基础上，给出了井眼受结构面切割的井壁稳定性评价方法，并研究分析了结构面产状对井壁失稳的影响。结果表明，井壁的稳定性与原地应力状态、结构面产状以及结构面的力学性质有关，在其它因素一定的情况下，结构面的走向与倾角对井壁的稳定与失稳方位有着较大的影响。因此，准确评价结构面产出状态是提高井壁稳定性评价精度的前提。     

LS SIMD微处理器中的三组指令并发执行的设计

文章介绍了LS SIMD微处理器中实现三组指令并发执行的可能性和必要性，分析了三组指令并发执行给流水线带来的影响，并讨论了控制逻辑对三级指令并发执行的控制及其实现形式。     

数字式液压逻辑流量阀的设计

数字工流量阀采用数字控制方式，调节系统流量以达到液压系统调整目的，它本身具有控制响应快、精度高、稳定性好、适应范围大等优点，在行走机械上将会得到广泛地应用。     

南水北调石家庄受水区地下水压采方案探讨

南水北调中线石家庄受水区水资源匮乏严重，由于连年超采地下水已引发了严重的环境地质问题。现对南水北调中线石家庄受水区地下水压采方案进行探讨，通过工程措施、管理措施和相关法规、办法的制定，开源与节流并举，使该区域水资源能够支撑区域社会、经济、环境的可持续发展。     

INCORPORATING PRACTICAL AND SYNTHESIS CONTENTS IN UNDERGRADUATE CONTROL EDUCATION

This paper revisits the effort over the last decade in making undergraduate control education more useful and attractive to both the control engineers and the engineers at large. With the help of further coverage in new textbooks, more practical and synthesis contents in the control courses have been incorporated. Gaps still exist, particularly in the areas of PID control and auto‐tuning, fuzzy control, overall control strategy, control structure and systems thinking, and these will be elaborated. A major challenge is in the coverage of more practical and synthesis contents in the introductory common control course for all engineers. How this may be resolved is discussed. Finally, the need for new teaching approaches such as the use of interesting case studies and the use of problem‐based learning will be outlined.     

CONSTRUCTION OF ADMISSIBLE OPERATION CONDITION DOMAIN FOR WELL-STIRRED REACTORS DURING THEIR DESIGN AND CONTROL STAGES

The work examines the problem of constructing an admissible operation condition domain for a well-stirred reactor which would satisfy restrictions in conversion, selectivity, heat removal and stability. The domain is very important and must be known during the reactor design and control stages because it yields visual information for analyzing the reactor operations and makes it possible to find the variation intervals of decision variables, necessary to calculate and optimize the reactor. Being known, the admissible operation condition domain makes it possible to estimate the limiting restrictions and to choose the necessary reserves. The domain has completely been studied analytically for chemical processes with arbitrary kinetics.