ADSP2187L在某光电跟踪装置中的应用

以弹载控制计算机为研究背景 ,按照实时性 ,小型化的要求 ,设计了以数字信号处理器 (DSP)为核心的光电跟踪装置I/O信息处理硬件系统。本文介绍了该信息处理系统的硬件结构 ,对主要的硬件接口设计作了描述 ;阐述了系统的工作原理 ,并对软件的功能、结构划分和运行控制进行了说明。

柴油发电机智能监控软件的设计——基于2187监控设备通信协议

分析了上海硕卓自动化电气有限公司2187柴油发电机监控设备的通信协议,提出了使用MSComm控件和利用RS485与远程的监控设备进行通信,设计了上位机软件的关键代码,达到对监控设备的远程监视和控制功能。经过实验和测试,该软件完成了2187柴油发电机监控设备所需功能,并且已经投入使用。

基于ADSP-2187L的高速Modem解决方案

本文首先简单介绍了AD公司的高性能数字信号处理芯片——ADSP-2187L的结构和特点,而后详细阐述了基于其的高速Modem解决方案。该方案利用ADSP-2187L高性能的数字信号处理能力和灵活方便的接口,外接专用Modem编译码器AD1803/1804,有效地实现高速Modem的整体要求,最后基于此进行了总结和展望。

基于ADSP2187的HDTV音频编码器系统

设计并实现了基于 ADSP2 1 87处理器的高清晰度电视信源编码系统中的音频编码器。编码器由实时编码和 PES打包构成 ,实时编码完成立体声数字音频的编码压缩 ,压缩的码流符合 ISO/IEC1 1 1 83-3MPEG-2标准 ,同时还接收 Dolby AC-3ES流输入。 PES打包完成 MPEG-2与 AC-3ES流的 PES打包。文中阐述了编码器的工作原理及设计思想 ,描述了该编码器硬件系统结构 ,分析了硬件设计的时序。

ASTM E2187测量卷烟引燃强度的标准测试方法

烟头掉在床上或是软体家具上是恶性火灾最常见的起因。美国消费品安全委员会的统计报告显示,美国从1992年至1996年,因这一原因引起的住宅火灾死亡人数估计高达20%。1984年里根总统签署了香烟安全法令。该法令为一个为期3年的降低烟草引燃强度的研究工作提供资金支持,研究认为降低引燃性香烟（又称为防火香烟）在技术上和经济上都是可行的。

ASTM E 2187与ISO 12863标准异同性比较分析

ASTM E2187和ISO 12863标准为卷烟引燃倾向提供了测试方法,ISO 12863标准是根据ASTM E 2187标准制定的,但两者之间仍存在一些差异。对标准的异同性进行比较分析,可以更好地掌握标准的适用性和通用性。

Contents and Abstracts of Chinese Journal of Mechanical Engineering (Chinese Edition),ISSN 0577-6686,CN 11-2187/TH

Vol.43,No.3,2007 NEXT GENERATION LITHOGRAPHY——IMPRINT LITHOGRAPHY DING Yucheng LIU Hongzhong LU Bingheng LI Dichen (State Key Laboratory of Manufacturing Systems Engineering, Xi’an Jiaotong University, Xi’an 710049, China) 1

Contents and Abstracts of Journal of Mechanical Engineering ISSN 0577-6686,CN 11-2187/TH

Recent Research Advances and Expectation of Mechanical Engineering Science in China;Research Progress of Friction Behavior during Powder Forming;Review of Vehicle State Estimation Problem under Driving Situation;Fault Diagnosis Method Based on Acoustic Holography;Effect of Track Structure Parameters on Rolling Contact Stresses of Wheel-rail

Contents and Abstracts of Journal of Mechanical Engineering ISSN 0577-6686,CN 11-2187/TH

Review on Key Technology of Hydrodynamic and Hydrostatic High-frequency Motor Spindles XIONG Wanli YANG Xuebing LV Lang YUAN Julong （National Research Center for High Efficiency Grinding, Hunan University, Changsha 410082, China） Abstract： High-speed spindles supported by hydrodynamic and hydrostatic hybrid bearings are widely applied in the field of high-speed precision machine tools due to highrotation accuracy, high dynamic stiffness, high vibration damping and long life. But some technical problems caused by integrated structure and high speed, including temperature rise control and motor performance optimization, are yet to be resolved when the integration of hybrid bearings and motor are developed to meet the requirements of ultra-high speed and ultra-precision machining Also major scientific problems involved in the dynamic and thermal characteristics of hybrid journal bearings and the mechanism of electromagnetic losses of high-frequency motor are to be further studied.

Contents and Abstracts of Journal of Mechanical Engineering ISSN 0577-6686, CN 11-2187/TH

Effect of Kinematic Behavior of Caudal Fin on Fishlike Robot Propulsion during Steady Swimming CHEN Weishan XIA Dan LIU Junkao SHI Shengjun （State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China）Abstract： The speed convergence algorithm is applied in the numerical simulation of a fishlike robot in self-propelled swimming. All simulations are started with the body at rest, the swimming speed is dynamically modified to converge to the steady value by verifying the fluid forces during the swimming process. The effects of kinematic behavior of caudal fin on fishlike robot propulsion are numerical investigated in the converged steady speed, while the propulsive mechanism and flow field structure are revealed. The results show that the steady speed can be predicted validly by using the speed convergence algorithm, while the relation between the kinematic behavior and the propulsion, power consumption and propulsive efficiency can be obtained through varying the phase difference and the maximum angle of attack. The effects of kinematic behavior of caudal fin on the wake structure and wake strength are clearly reflected in the three dimensional flow field structures. The fmdings are of great significance to the swimming speed prediction, effect of kinematic behavior on fishlike robot propulsion as well as the motion narameter design for fishlike robot

Contents and Abstracts of Journal of Mechanical Engineering ISSN 0577-6686,CN 11-2187/TH

Research on Environment Test Voltage Loading Method of Electrical Connector in Vacuum For problems that different voltage loading method of electrical connector produces different electric field, the calculation model and method of electric field are set up with the electrostatic field theory in view that the decrease or breakdown of insulation resistance and dielectric strength induced by surface fiashover cause failure of electrical connector in vacuum. Then in order to quickly and accurately evaluate the insulation life of electrical connector in vacuum environment, the optimized mathe- matical model of electric field is established nnder the condition of rated voltage by regarding the largest electric field and the most uniform electric field as objectives. Through extracting comprehensive evaluation function from the objectives by using signal-to-noise ratio of electric field, genetic algorithm is used to optimize the voltage loading method by converting multi objective to single objective. The optimal results show that the electric field not only increases about 50%, but also is more uniform, which provides the reference for the reliability evaluation of electrical connector in vacuum.

Contents of Journal of Mechanical Engineering ISSN 0577-6686,CN 11-2187/TH*

Vol. 47, No. 11, 2011 DOI: 10.3901/JME.2011.11.001 Linear Motion Control of Two-pendulums- driven Spherical Robot 1 ZHAO Bo WANG Pengfei SUN Lining LI Mantian (State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China)

Contents and Abstracts of Journal of Mechanical Engineering ISSN 0577-6686, CN 11-2187/TH

Sensitivity Analysis of Cup-shaped Flexible Gear Parameters to Its Stress Based on ANSYS

Contents and Abstracts of Journal of Mechanical Engineering ISSN 0577-6686,CN 11-2187/TH Vol.46,No.9,2010

Basic Principles, Main Characteristics and Development Tendency of Methods for Robot Mechanism Structure Synthesis Abstract： Basic principles and characteristics of three structural synthesis methods （based on screw theory, displacement subgroup and position orientation characteristics（POC） respectively） for robot mechanism are described and compared. This comparative study shows that the method based on POC has the following notable advantages：

低三碘甲腺原氨酸综合征与抗N-甲基-D-天冬氨酸受体脑炎严重程度及预后的相关分析

目的探讨抗N-甲基-D-天冬氨酸受体(NMDAR)脑炎患者出现低三碘甲腺原氨酸(T3)综合征与疾病严重程度及预后的关系。方法回顾性分析2016年1月至2021年1月海军军医大学(第二军医大学)第一附属医院确诊的32例抗NMDAR脑炎患者的临床资料。根据入院后首次测定的血清游离三碘甲腺原氨酸(FT3)水平,将患者分为低T3综合征组及甲状腺功能正常组,并比较两组患者的人口学信息、临床特征等。根据患者发病后2~4周时的改良Rankin量表(mRS)评分,将患者分为预后良好组(mRS评分<3分)和预后不良组(mRS评分≥3分),并比较两组患者临床特征及实验室检查结果。采用Pearson双变量相关分析探究低T3综合征与抗NMDAR脑炎严重程度及预后的相关性。结果32例患者中有14例(43.75%)出现低T3综合征。与甲状腺功能正常组相比,低T3综合征组患者的意识障碍发生率、入院时mRS评分、癫痫发作率、并发肺部感染率、头颅MRI异常率、死亡率均较高(P均<0.05)。预后不良组合并低T3综合征、癫痫持续状态、发热、并发肺部感染的患者比例均高于预后良好组(P均<0.05)。相关分析结果显示,FT3水平与mRS评分呈负相关(r=-0.514,P=0.003)。结论抗NMDAR脑炎患者甲状腺激素水平改变可能与体内自我保护机制有关,可能是一种潜在的重症抗NMDAR脑炎患者不良预后的生物标志物。常规监测FT3水平对抗NMDAR脑炎患者进行危险分层及预后判断具有重要的临床意义。

InSync 8040起搏器在充血性心力衰竭治疗中的初步应用

观察InSync 80 40起搏器治疗扩张型心肌病 (DCM)伴充血性心力衰竭 (CHF)的疗效。 8例DCM伴CHF患者 ,男 7例、女 1例。其中伴完全性左束支阻滞 6例 ,左前分支阻滞、右室起搏后宽QRS波 (>0 .2 0s)各 1例。通过冠状静脉窦置入 2 187电极起搏左室 ,右房电极和左、右室电极分别与InSync 80 40起搏器A、V1、V2 孔相连接。术后起搏阈值 3.75± 0 .6 (3.0～ 5 .0 )V。患者CHF的症状明显改善 ,术后左室舒张末径、左室射血分数、左室短轴缩短率、心胸比例较术前均有改善 (分别为 6 6 .1± 6 .93mmvs 72 .5± 8.1mm、0 .374± 0 .0 31vs 0 .2 81± 0 .0 5 3、19.8%± 2 .2 %vs12 .2 %± 2 .7%、0 .5 9± 0 .4vs 0 .6 4± 0 .2 0 ;P均 <0 .0 5 )。结论 :初步临床应用表明 ,以InSync 80

双室右房三心腔起搏在充血性心力衰竭治疗中的初步应用

目的 观察InSync80 4 0起搏器治疗扩张型心肌病 (DCM )伴充血性心力衰竭 (CHF)的疗效。方法 患者 ,男 7例 ,女 1例 ,年龄 4 8～ 75 (5 8 7± 10 2 )岁 ,均为扩张性心肌病伴充血性心衰 ,且有完全性左束支传导阻滞或左前分支传导阻滞 ,植入InSync80 4 0起搏器。左心室起搏通过冠状静脉窦植入Medtronic公司生产的 2 187电极 ,置于冠状静脉窦的分支静脉起搏左心室 ,左右心室电极和右房电极导线与InSync 80 4 0起搏器相连接。 结果 以InSync80 4 0起搏器起搏并辅以合适的房室间期 (AVD) ,患者心力衰竭的症状明显改善 ,NYHA心功能分级从Ⅲ -Ⅳ级提高到Ⅰ -Ⅱ级 ,超声心动图示心功能指标改善 ,核素检查示心室收缩较术前协调 ,起搏后心电图QRS时限缩短。结论 初步临床应用表明 。