Fuel design real-time to control HCCI combustion

In order to achieve lower emissions and extensive load in the homogeneous charge com- pression ignition (HCCI) engine system, a novel fuel design concept that high-octane number fuel and high-cetane number fuel are mixed real-time to con- trol HCCI combustion is proposed in this study. HCCI combustion fueled with iso-octane/n-heptane mix- tures controlled real-time on a single-cylinder HCCI combustion engine is studied. The test results show that the equivalence ratio of n-heptane in mixtures decides ignition and controls the combustion phase of HCCI combustion. The addition of iso-octane ex- tends knocking limit in equivalence ratio somewhat, but knocking occurrence mainly depends on the total concentration of mixture. Although operating range in equivalence ratio becomes narrow with the increas- ing proportion of iso-octane, the maximum load of HCCI combustion fueled with iso-octane/n-heptane mixtures controlled real-time is increased about 80% more than that of pure n-heptane. When iso-octane/ n-heptane mixtures are controlled in optimized method, it is proved that the load of HCCI combustion can be fully extended and emissions can be de- creased remarkably, while at the same time the higher indicated thermal efficiencies are obtained over the extensive operation range.     

露天矿卡车自动化调度

本文对露天矿卡车调度方法进行了分析.提出了在采用卡车运输露天矿中实施卡车自动化调度的软、硬件系统.     

大型医用氧舱监测与控制系统

介绍大型医用氧舱的实时监控系统，从氧舱对系统提出的要求出发，讨论以ＳＴＤ工控机为核心的系统组成，软、硬件设计以及对象模型和控制方式。该系统投入运行表明已完全达到开发设计要求。     

37-element solar adaptive optics for 26-cm solar fine structure telescope at Yunnan Astronomical Observatory

A 37-element solar adaptive optics （AO） system was built and installed at the 26-cm solar fine structure telescope of Yunnan Astronomical Observatory. The AO system is composed of a fine tracking loop with a tip/tilt mirror and a correlation tracker, a high-order correction loop with a 37-element deformable mirror, a correlating Shack-Hartmann wavefront sensor based on the absolute difference algorithm, and a real time controller. The system was completed on Sep. 28, 2009 and was used to obtain AO-corrected high-resolution solar images. The contrast and resolution of the images are clearly improved after wavefront correction by AO. To the best of out knowledge, this system is the first solar AO system in China.     

基于 Windows NT 平台的智能机器人控制软件

从实时控制系统所要求的几方面分析了ＷｉｎｄｏｗｓＮＴ用于实时控制的优点,并应用ＷｉｎｄｏｗｓＮＴ作为平台,研制了一套智能机器人控制软件系统,该系统为机器人提供人机接口、数据通信、控制算法解算、多任务作业管理等功能,使机器人能自主地完成机械手运动和猎取目标等控制工作．     

变电站电压无功实时控制策略探讨

本文在传统方法的基础上,讨论了电压实时控制的可能性和实现方法,通过对传统九宫图法的分析改进,得到了电压实时控制的模型,改善电网的有功损耗来实现对电网有功的调节和控制。     

基于HT-7U超导托卡马克放电的EFUND软件实现

介绍了基于HT-7U超导托卡马克装置放电的EFUND软件实现过程。介绍了装置的格林函数和计算公式及用于计算格林函数的EFUND算法的主要思想。简要叙述了计算感应系数的两个主要过程,介绍了EFUND软件的改进意义和遇到问题及解决经验,给出了两种语言环境下EFUND软件运行结果的误差分析。实现了EFUND软件的实时控制功能,为平衡拟合EFIT系统的实时控制改进奠定了基础。     

基于实时Linux的极向场电源主控制系统的设计

为了满足极向场电源控制系统严苛的实时响应的要求,选择实时Linux系统作为系统平台,采用一个开放源代码的、基于C/C++的Eclipse可扩展的开发平台作为开发工具,完成极向场电源主控制系统的设计,实现了在一个控制周期内(1ms)对极向场电源系统的12套本地控制器的实时通信和实时控制。对极向场电源主控制系统的高速通信和实时控制、稳定可靠等关键问题给出了可行的实践性的解决方法。经实验测试,该设计运行稳定,能满足极向场电源控制系统的实时需求。     

盾构智能化姿态控制器的设计

在理论推导千斤顶推力的基础上,寻求工程历史数据的规律,得出地质条件与盾构推进千斤顶压力的关系.在控制器实时控制中,根据探地雷达探测得到的盾构前方的地质条件,控制器预设盾构各区千斤顶的压力值.引入模糊控制理论,根据自动测量系统测得的实时偏差量,通过模糊控制器得出千斤顶纠偏控制量.最后,综合推估推力和纠偏推力,最终实现盾构推进姿态的自动控制.     

基于LonWorks现场总线技术的变风量空调系统温度PID控制

采用LonWorks现场总线技术和PID控制算法,对变风量空调系统的送风温度和回风温度进行了控制方法的研究.以某一空调房间为控制区域,运用该方法进行了实时控制,测量了送风温度和回风温度随时间变化的趋势曲线.试验结果表明,该方法可行有效,控制效果良好.