摘要：A novel vibration isolation device called the nonlinear energy sink(NES)with NiTiNOL-steel wire ropes(NiTi-ST)is applied to a whole-spacecraft *** NiTi-ST is used to describe the damping of the NES,which is coupled with the modified Bouc-Wen model of *** NES with NiTi-ST vibration reduction principle uses the irreversibility of targeted energy transfer(TET)to concentrate the energy locally on the nonlinear oscillator,and then dissipates it through damping in the NES with *** generalized vibration transmissibility,obtained by the root mean square treatment of the harmonic response of the nonlinear output frequency response functions(NOFRFs),is first used as the evaluation index to analyze the whole-spacecraft system in the *** optimization analysis of the impact of system responses is performed using different parameters of NES with NiTi-ST based on the transmissibility of ***,the effects of vibration suppression by varying the parameters of NiTi-ST are analyzed from the perspective of energy *** results indicate that NES with NiTi-ST can reduce excessive vibration of the whole-spacecraft system,without changing its natural ***,the NES with NiTi-ST can be directly used in practical engineering applications.

摘要：An S-band cavity BPM is designed for a new injector in National Synchrotron Radiation Laboratory. A re-entrant position cavity is tuned to the TM110 mode as position cavity. Cut-through waveguides are used as pickups to suppress the monopole signal. Theoretical resolution of this design is 31 nm. A prototype cavity BPM system is manufactured for off-line cold tests. The wire scanning method is used to calibrate the BPM and estimate the performance of the on-line BPM system. A cross-talk problem has been detected during the cold test. Racetrack cavity BPM design can be used to suppress the cross-talk. With the nonlinear effect being ignored, transform matrix can be used to correct cross-talk. Analysis of cold test results shows that the position resolution of prototype BPM is better than 3 μm.

摘要：　采用一维拉格朗日磁流体力学(MHD)程序研究了等离子体喷射轴心单丝的物理现象,给出了碰撞后铝丝受热膨胀和最后箍缩到轴心的整个过程图像,指出这一设计方法能在轴心丝上获得较高的电流上升率和较高的轴心压缩密度,并还给出了箍缩所得的功率和能量曲线。

摘要：针对长距离、大规模、高密度的温度场测量应用,研究了一种基于CAN总线与1-wire总线的经济型系统解决方案。该方案以Cortex-M3处理器为核心,对CAN总线与1-wire总线接口的硬件电路进行优化,增强了网络的稳定性。同时,从工程实际应用出发,阐述了大规模测点的优化管理与维护。该方案现已成功应用于某电厂200 MW机组的锅炉金属壁温在线检测系统,具有较好的工业应用前景。

摘要：This paper aims to find the relationship between the structural parameters and the radial stiffness of the braided stent and to understand the stress distribution law of the wires. According to the equation of the space spiral curve, a three-dimensional parametrical geometrical model is constructed. The finite element model is built by using the beam-beam contact elements and 3D beam elements. The constituent nitinol wires are assumed to be linear elastic material. The finite element analysis figures out that the radial stiffness of the stent and the stress distribution of the wires are influenced by all the structural parameters. The helix pitch of the wires is the most important factor. Under the condition of the same load and other structural parameters remaining unchanged, when the number of wires is 24, the stress of the wire crosssection is at the minimum. A comparison between the vitro experimental results and the analytical results is conducted, and the data is consistent, which proves that the current finite element model can be used to appropriately predict the mechanical performance of the braided esophageal stents.

摘要：Mooring systems play an important role for semi-submersible rigs that drill in deepwater.A detailed analysis was carried out on the mooring of a semi-submersible rig that conducted a trial well drilling at a deepwater location in the South China Sea in *** rig was 30 years old and had a shallow platform with a designed maximum operating water depth of 457 *** the mooring analysis,a mooring design was given that requires upgrading of the rig’s original mooring *** upgrade included several innovations,such as installing eight larger anchors,*** the original anchors and inserting an additional 600 m of steel wires with the existing *** this was done to enhance the mooring capability of the rig in order for the rig to be held in position to conduct drilling at a water depth of 476 *** overall duration of the drilling was 50 days and the upgraded mooring system proved to be efficient in achieving the goal of keeping the rig stationary while it was drilling the trial well in the South China *** successful campaign demonstrates that an older semi-submersible rig can take on drilling in deep water after careful design and proper upgrading and modification to the original mooring system.

摘要：针对移动支付系统中SIM卡访问安全问题,文章对其进行系统研究。首先分析在GP规范下实现手机客户端及支付系统访问规定规范。其次,以SWP方案为例建立SWP方案访问控制整体设计模型。最后,设计访问控制规则体系构架模型并实现访问规则文件指令写入。最终实现在GP规范下SIM卡SE针对手机客户端的访问控制。

摘要：针对以高性能通用计算机为硬件平台、星载操作系统为软件平台的星载综合电子系统,提出一种综合电子系统数据处理单元的设计方案,即基于Spacewire总线的数据处理单元,并对实现技术作了分析与说明。

摘要：在NFC技术中,CLF芯片与SIM卡的连接是一个重要问题,本文提出了一种具有自主知识产权的CLF与SIM卡的通信方法,采用新的调制解调方式,使得S2信号在S1信号高低电平时都能传输,实现单线连接NFC与SIM卡,以及它们之间的全双工通信。通过对该方法进行电路级的设计和仿真,验证了该方法的正确性和稳定性。