攀钢焦炉煤气压缩机长周期运行技术研究

通过对焦炉煤气压缩机故障原因的分析，制定实施了控制焦炉煤气杂质、升级压缩机吸、排气阀片材料、改造压缩机活塞环以及采用压力注油润滑压缩机等措施，解决了焦炉煤气压缩机故障频发的问题，保证了中压焦炉煤气系统安全稳定运行。     

汽轮发电机无刷交流励磁机的原理及检修

本文通过对汽轮发电机无刷交流励磁机的原理及检修方法的探讨，总结了无刷交流励磁机的检修工艺及一些必须标准数椐，从而达到提高汽轮发电机的检修质量，提高检修效率的目的。     

高压煤浆泵轴断裂原因分析与处理

通过对比进口压缩机轴和国产替代压缩机轴断裂照金相分析，找到了国产替代压缩机轴失效原因，进行了改善处理，取得了良好的经济效益。     

AV型轴流压缩机同时采用静叶和转速调节时的控制策略

总结了武钢AV80型轴流压缩机控制系统的设计、调试经验，详细阐述了AV型轴流压缩机在定量／定风压调节中，同时采用静叶开度和转速调节时，实现轴流压缩机控制的优点、难点、解决方案以及轴流压缩机防喘控制的特点。     

TS32S-450HWC螺杆式压缩机在轧钢空压站的应用

分析了活塞式、螺杆式压缩机的特性和效率后，在轧钢空压站改造扩建中，选用螺杆式压缩机取代尚在运行的活塞式压缩机，满足了工艺要求和生产需要，效果明显。     

多台离心式压缩机集中运行及其系统控制

启明星电解铝厂空压站共设计六台离心式压缩机，为电解、氧化铝输送、炭素阳极生产提供压缩空气。本文针对实现压缩机节能、平均寿命等模式，叙述单台离心式压缩机控制原理和六台压缩机CES集中运行及其系统控制，为故障分析提供解决途径。     

60MW汽轮发电机自复励励磁系统参数分析

本对热电厂５＃、６＃汽轮发电机励磁系统存在的问题进行了分析，阐述了确保机组安全、稳定运行及今后选择大、中型汽轮发电机自复励系统的理论依据。     

中铝集团河南分公司背压汽轮发电机组状态监测技术收效显著

中铝集团河南分公司七台背压式汽轮发电机组按照设备运行规律，已进入故障高发期，为保证汽轮发电机组的安全、经济、连续、稳定运行，河南分公司加强对外技术交流，充分利用先进设备管理理论和计算机技术，针对7台背压式发电机组高温、高压、高转速及双向变工况的生产实际，将机组正常运行与故障停机时的有关数据录入设备运行数据库作为评定标准，同时采用时域信号数字特征量自动故障征兆识别、七阶椭圆跟踪滤波器等先进技术对设备实时运行情况进行监测，开发出了背压汽轮发电机组状态监测系统。     

大功率离合器在汽轮发电机的应用特性

离合器在汽轮发电机的联轴器中使用极少,并且在国内50000 k W以上的大型汽轮发电机使用离合器的例子未曾见到报道。通过对大功率离合器在汽轮发电机的应用特性进行分析,可以为汽轮发电机稳定生产运行提供可靠保障。     

15MW汽轮发电机组负荷低分析及处理

分析汽轮发电机组负荷低的原因，提出解决措施。     

控制图在铜精矿中银含量检测质控管理中的应用

目前,测量不确定度的评估技术大致可以分为两类:“bottom-up”和“top-down”。“bottom-up”技术过程繁复且对化学检测实验室测量不确定度有局限性,而“top-down”技术中的控制图法不仅操作简便,还可以弥补“bottom-up”技术评定不确定度出现的局限性,控制图法作为实验室质控管理的重要手段已被广泛认可。依据标准GB/T 27407—2010,探讨了控制图在铜精矿中银含量检测质控管理的应用,对实验室日常分析工作中铜精矿质控标准样品(GBW 07166)中银含量系列结果的正态性、独立性与分辨力进行检验,作控制图,t检验并评定方法的不确定度及分析其合理性。铜精矿中银含量质控样品实测数据控制图的计算结果如下:平均值为43.8g/t,期间精密度为1.6g/t,扩展不确定度为3.2g/t,接受系列测量结果的正态性、独立性与分辨力适应性的假定,控制图中没有失控点,整个实验室检测系统处于受控状态。控制图法可反映实验室较长一段时间内的检测水平,适用于检测实验室的质量控制,具有实际应用价值。     

模糊控制技术在板形控制中的应用

介绍了板形控制的概念、板形控制方法以及模糊控制在自动板形控制中的应用。板形控制系统是一个多变量控制系统。设计了一种模糊控制器,通过隶属函数及量化因子和比例因子,根据模糊控制规则表的输出来进行调整,具有一定的自适应能力。     

Dual control in the last stage of oxygen injection in the converter

An algorithm is proposed for dual control, in which identification of the model of change in oxygen flow rate during injection—in particular, change in CO content in the converter’s exhaust gases—is accompanied by correction of the oxygen flow rate in the final stages of the melt. In this algorithm, a stepped control signal is applied at a specified time and monitored during the following interval. The control signal and output signal are recorded during the transient process and those data provide the basis for refinement of the coefficients employed in the model and refinement of the control signal. The calculated control signal is employed in the next control interval. The effectiveness of the proposed control algorithm is estimated in terms of the smoothness of the time series for the carbon content in the metal at the singular point and the consistency of the steel’s carbon content at converter discharge.     

FM 458功能模板在冷轧连退线光整机上的应用

结合SIEMENS FM458功能模板在光整机控制系统中的应用,介绍了FM458软硬件概况,着重阐述了光整机压下HRFC控制、弯辊控制以及延伸率控制的原理,并对光整机的控制思想进行了探讨和分析。     

LOGO在水位控制系统中的应用

主要介绍新近推出的通用逻辑控制模块LOGO在3台水泵控制系统中任意2台工作1台备用的应用实例和逻辑编程,以取代常规继电器的复杂控制.采用LOGO控制过程简单、清晰,只用一个LOGO即可达到多个中间继电器和时间继电器组成的复杂的联锁控制.充分利用LOGO所具有的逻辑控制功能的特点,进行软件逻辑编程,达到控制3台水泵两用一备的目的.通过对LOGO与继电器控制进行比较,说明采用LOGO控制模块具有优越性和较好的价格比,以及在类似工程中应用前景.     

Fuzzy-PID控制在鱼雷罐烘烤温度控制中的应用研究

针对鱼雷罐烘烤过程中惯性大、扰动多的特点,介绍了模糊控制理论在鱼雷罐烘烤控制中的应用。通过对单独PID控制方式和单独Fuzzy控制方式的分析,发挥Fuzzy控制反应快、对参数变化适应力强的优点及PID控制静差小、稳定性好的优点,对烘烤过程采用Fuzzy-PID复合控制方式,实践结果显示这种复合控制方式在实际温度控制中大大提高了控温精度,很好地满足了烘烤的性能要求。     

Role of control in mediating perceptions of density.

Conducted 2 experiments to determine whether manipulation of personal control influences the experience of crowding. In Exp I (72 Ss), the positioning of 4 confederates in an elevator maneuvered a naive S to a place in front of or on the opposite front side to the panel of floor selection buttons. Ss standing in front of the "control" panel felt significantly less crowded and saw the elevator as significantly larger than Ss in the opposite position. In Exp II (71 male undergraduates), participants in a series of group process tasks were initially assigned at random to a role that gave them no control over the group's activities, control over the onset and administration of the activities, or control over their termination. All groups were composed of 6 male students who met in either small (high density) or large (low density) rooms. Ss with control felt significantly less crowded than Ss without control, and the type of delegated control interacted with density in influencing evaluations of room ambience and personal comfort. High-density rooms were judged to be less pleasant and more crowded than low-density rooms. Results suggest that control mediates responses to density and is directly related to the experience of crowding. (32 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

DCS在球团竖炉中的应用

采用SUPCON -JX3 0 0集散控制系统 ,进行竖炉中废气量和温度的控制 ,实现了燃烧室自寻优控制、竖炉自动焙烧控制等。系统投用后 ,使用效果良好 ,在提高球团矿氧化速度、降低球返粉、提高球团矿产量、减少煤气消耗等方面效果明显 ,年创效益 12 7.3 6万元     

A prospective study of age differences in consequences of emotional control in women referred to clinical mammography.

Age differences in emotional control and their consequences were examined in women referred to mammography on the suspicion of breast cancer but with benign results of the examination. Under natural experimental conditions, the levels of emotional control and distress were measured 1 week prior to the examination as well as 4 and 12 weeks after the examination in 717 younger women (ages 19–39), middle-aged women (ages 40–59), and older women (ages 60–85). A higher level of emotional control was found in the older women; this indicates that, in these birth cohorts, emotion-focused coping is more prevalent in old age than in young adulthood, even when similar stressors are experienced. The analyses revealed an interaction between age and emotional control; higher levels of control were related to a reduction in distress during the course of the study in older women, whereas emotional control was unrelated to changes in distress in younger and middle-aged women. The findings support the life span theory of control, which suggests that secondary control strategies are more adaptive in old age. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

PLC在选矿厂破碎车间的应用

介绍了PLC在选矿厂磨矿车间控制系统中的应用过程、控制系统的组成、特点、功能以及控制软件的设计等。通过实际应用表明,该系统能够可靠、准确地完成控制操作、实时监测运行状况,并对现场出现的各种突发事件及时报警,取得了良好的控制监测效果。