A New Robust Adaptive Control of Uncertain Nonlinear Systems and Pendulum Application

A new robust adaptive control of uncertain nonlinear systems is proposed in this paper. The proposed method combines sliding mode control with the immersion and invariance (I&I) adaptive scheme, and it has more available degrees of freedom than using the backstepping scheme. Via the proposed method, a class of nonlinear systems with mismatched parametric perturbations can be rendered asymptotically stable and the performance of the system can also be improved. Finally, the proposed method is applied to a simple pendulum with motor dynamics, and simulation results show the effectiveness and performance of the proposed method.     

Quantum identity authentication based on ping-pong technique without entanglements

A quantum identity authentication scheme based on ping-pong technique without entanglements is proposed. It can verify the legitimate user’s identity and update the initial authentication key for reuse. The security of the proposed scheme is extensively analyzed and accordingly confirmed in the case of general individual attacks. The present scheme owns high efficiency due to the use of single-particle states in a two-way quantum channel. Moreover, the scheme is economical and feasible with present-day technique.     

Stochastic reliable control of a class of networked control systems with actuator faults and input saturation

The stochastic reliable control problem for networked control systems (NCSs) subject to actuator failure and input saturation is investigated in this paper. In order to get the relationship between the maximum allowable consecutive packet dropouts, the packet dropout probability, the actuator failure matrix and the input saturation, a packet dropout probability dependent condition is given via linear matrix inequality (LMI) technology. Then, a suitable reliable controller is designed to ensure the closed-loop system to be exponentially mean square stable against actuator failures and input saturation. Finally, numerical examples are provided to show the effectiveness of the proposed method.     

氯化聚乙烯接枝氯乙烯聚合速率及传热

本文用气相色谱技术研究氯化聚乙烯(CPE)-接枝(g)-氯乙烯(VC)聚合动力学,对不同引发剂体系分析热负荷分布,并对7 m~3聚合釜传热面进行校核。     

基于参数可变遗传算法的炮兵通信网络覆盖控制优化

针对节点高密度部署的炮兵通信网络中优化工作节点集的选取问题,提出一种基于参数可变遗传算法的覆盖控制优化方法。设计了密度检测机制优化初始种群,并设计了即考虑到进化代数对算法影响,又考虑到每代中不同个体适应度对算法作用的自适应交叉概率和变异概率。仿真实验及分析表明,该优化方法快速有效地实现了工作节点数目少、节点集覆盖率高的工作节点集的选取,可有效地降低能耗,延长网络生存时间。     

采用读卡机芯片FM1715SL设计的RFID读卡机

根据车辆管理系统对身份识别需求,提出基于国产芯片的RFID读卡机方案。数据接口设计为ISO14443TypeB的设备,在满足安全保密前提下,很好地兼顾了使用方便和高效便捷,大规模的车载应用验证了该方案的可靠性。     

具有完整TCP/IP协议支持的U-Boot

在保护装置中最为稳定的引导程序U-Boot中实现了对该通用调试软件的通信协议的支持。基于U-Boot提供的独立应用开发框架,将独立的具有完整TCP/IP协议支持的lwIP协议栈移植至U-Boot。基于该协议栈以及U-Boot的独立应用开发框架,实现了对通用调试软件的复杂通讯协议的完整支持。经过上述技术改进,极大地扩展了通用调试软件的适用范围,加快了变电站工程实施中遇到的各种装置类似问题的解决速度。     

论港口危险货物运输装卸作业安全问题

危险货物作业安全越来越受到人们的关注，从危险货物的分类谈起，分析了危险货物港口运输装卸作业中易引发事故的诸因素和安全作业中应特别注意的几个问题，强调从业单位、从业人员的资质、法律意识和业务素质，制定危险货物事故应急预案等。提出了加强港口危险货物安全管理的有关建议：开展危险源与事故隐患的多层次监控；推进港航危险货物企业建立安全质量标准化体系；创建“抓小放大”的安全管理机制。     

Intercorrelations among plasma high density lipoprotein,obesity and triglycerides in a normal population

The interrelationships among fatness measures, plasma triglycerides and high density lipoproteins (HDL) were examined in 131 normal adult subjects: 38 men aged 27–46, 40 men aged 47–66, 29 women aged 27–46 and 24 women aged 47–66. None of the women were taking estrogens or oral contraceptive medication. The HDL concentration was subdivided into HDL_2b, HDL_2a and HDL₃ by a computerized fitting of the total schlieren pattern to reference schlieren patterns. Anthropometric measures employed included skinfolds at 3 sites, 2 weight/height indices and 2 girth measurements. A high correlation was found among the various fatness measures. These measures were negatively correlated with total HDL, reflecting the negative correlation between fatness measures and HDL₂ (as the sum of HDL_2a and_2b). Fatness measures showed no relationship to HDL₃. There was also an inverse correlation between triglyceride concentration and HDL₂. No particular fatness measure was better than any other for demonstrating the inverse correlation with HDL but multiple correlations using all of the measures of obesity improved the correlations. Partial correlations controlling for fatness did not reduce any of the significant correlations between triglycerides and HDL₂ to insignificance. The weak correlation between fatness and triglycerides was reduced to insignificance when controlled for HDL₂. Presented (in part) at the Annual Meeting of the Oil Chemists' Society in St. Louis, MO, May 1978.