古莲河露天煤矿边坡安全性分析

根据古莲河露天煤矿边坡实际参数,采用弗先科作图法、极限平衡法以及数值模拟手段对边坡安全性进行分析,计算结果显示边坡安全系数满足安全生产的需求,并根据分析结果提出了边坡管理的建议。     

不敏变换鲁棒Kalman滤波器在发酵过程中的应用(英文)

State estimation is the precondition and foundation of a bioprocess monitoring and optimal control. However, there are many difficulties in dealing with a non-linear system, such as the instability of process, un-modeled dynamics, parameter sensitivity, etc. This paper discusses the principles and characteristics of three different approaches, extended Kalman filters, strong tracking filters and unscented transformation based Kalman filters. By introducing the unscented transformation method and a sub-optimal fading factor to correct the prediction error covariance, an improved Kalman filter, unscented transformation based robust Kalman filter, is proposed. The performance of the algorithm is compared with the strong tracking filter and unscented transformation based Kalman filter and illustrated in a typical case study for glutathione fermentation process. The results show that the proposed algorithm presents better accuracy and stability on the state estimation in numerical calculations.     

基于自适应进化学习的约束多目标粒子群优化算法

针对约束边界粒子在边界区域搜索能力不足的问题,提出一种基于自适应进化学习的约束多目标粒子群优化算法。该算法根据不符合约束条件粒子的约束违反程度,修正优化算法的进化学习公式,提高算法在约束边界区域的搜索能力;通过引入一种基于拥挤距离的Pareto最优解分布性动态维护策略,在不增加算法复杂度的前提下改进Pareto前沿的分布性。实验结果表明,所提出的算法可以获得具有更好收敛性、分布性和多样性的Pareto前沿。     

棉织物漂练半成品疵点的成因及防治

对棉织物染色生产中经常遇到的漂练半成品烂棉斑、半成品折子、布面不净和漂练去杂不净等质量问题,分析其成因,并提出预防方法.     

染色色差色条色花的预防与控制

分析染色半成品和染色过程中（中深色）产生边中色差及前后色差、色条、条花的影响因素，从染料、助剂、工艺控制和设备等诸方面，给出了预防措施。     

基于ZigBee网络的室内甲醛浓度远程实时监测系统设计

针对现有家用甲醛检测手段中存在的测量点单一,无法远程监测的问题,设计了一种基于无线传感器网络ZigBee的室内甲醛浓度远程实时监测系统,给出了整体系统的构建方案,构建了甲醛浓度检测的无线传感网络,通过ZigBee网络实现对家庭空间中多个测量点的实时采集,经过网络远传后通过LabVIEW监测程序实现数据的远程实时显示。经过测试,完成了对家庭环境中多个测量点的室内甲醛浓度的远程实时监测,验证了系统的可行性与可靠性。     

预置式脉冲扭力工具的校准方法探究

分析了脉冲扭力工具的工作原理,并针对使用相对法无法对预置式脉冲扭力工具进行校准的问题,提出了一种依据螺栓拧紧原理,通过夹紧力反向计算该工具输出扭矩,用输出扭矩重复性表征预置式脉冲扭力工具输出性能的校准方法,并且搭建了校准系统,实现了对预置式脉冲扭力工具的校准,提高了校准精度,并通过试验进行了验证。     

基于Silverlight的柔性生产报表系统的设计

针对流程工业管理信息系统中报表系统灵活性差的问题,提出了一种基于Silverlight的柔性报表系统的设计方法.该方法采用Silverlight技术在客户端实现用户表现层和业务逻辑层功能,利用XML技术将报表样式与报表数据分离,通过自定义XML标签实现报表的灵活配置,采用Web Service技术实现客户端与服务器端之间的数据交互.给出了柔性生产报表系统架构与实现方法,在.NET平台下设计了由报表柔性编辑模决、报表生成模块和报表显示模块等组成的柔性生产报表系统.实际应用表明,采用Silverlight技术开发的柔性生产报表系统能够实现报袁的灵活生成.     

应用群能量恒定粒子群优化算法的批次流加发酵过程批次间优化(英文)

An iterative optimization strategy for fed-batch fermentation process is presented by combining a run-to-run optimization with swarm energy conservation particle swarm optimization (SEC-PSO). SEC-PSO, which is designed with the concept of energy conservation, can solve the problem of premature convergence frequently appeared in standard PSO algorithm by partitioning its population into several sub-swarms according to the energy of the swarm and is used in the optimization strategy for parameter iden-tification and operation condition optimization. The run-to-run optimization exploits the repetitive nature of fed-batch processes in order to deal with the optimal problems of fed-batch fermentation process with inaccurate process model and unsteady process state. The kinetic model parameters, used in the operation condition optimization of the next run, are adjusted by calculating time-series data obtained from real fed-batch process in the run-to-run optimization. The simulation results show that the strategy can adjust its kinetic model dynamically and overcome the instability of fed-batch process effectively. Run-to-run strategy with SEC-PSO provides an effective method for optimization of fed-batch fermentation process.     

机械外壳用含钒铝合金的挤压工艺优化

采用不同的挤压速度和挤压温度对机械外壳用6061-0.8V新型含钒铝合金试样进行了挤压成型,并进行了力学性能的测试与分析。结果表明:随挤压速度由2 m/min提升至4.5 m/min,挤压温度由375℃升高到475℃,机械外壳用6061-0.8V新型含钒铝合金试样的抗拉、屈服强度先增大后减小,断后伸长率变化幅度较小,力学性能表现为先优化后下降。相比于2 m/min,3.5m/min速度挤压时的抗拉强度和屈服强度各增大了18、16 MPa;相比于375℃,425℃温度挤压时的抗拉强度和屈服强度各增大了20、24 MPa。机械外壳用6061-0.8V新型含钒铝合金挤压成型较佳的工艺参数选择为:挤压速度3.5 m/min、挤压温度425℃。