钢丝绳生产过程控制系统的设计

介绍在钢丝绳合成生产过程中应用ＳＴＤ工业控制计算机设计的实例，该系统采用变频调速器实现电机的调速，省去了传统的机械传动机构，使得操作灵活方便，生产精度高，在不增加硬件设备的条件下可生产多种规格的产品．     

智能语言发令和报警系统的研制

本文介绍一种能自动用语言准确报出故障、发出指令的系统。该系统用UM5100语言处理器作语言波形编码器,直接用数字表示语言波形。借助于存储器和音频电路组成语言录放电路,进行语言的记录和再生,并在微机的控制下组成智能系统,应用于工业生产及智能测试等领域。当过程控制中出现不正常情况时,迅速、准确地为操作人员指出故障所在和发出操作指令。这种系统明显地优于以往的指示灯显示或者电铃呜响的报警方式,并且在工业生产、交通管理及医疗技术等各种领域中有广泛的通用性及实用价值。     

基于BER的ASN．1编解码原理与设计实现

本文介绍了ASN．1和BER基本编码规则，分析了7号信令协议栈的TCAP层消息结构和ASN．1之间的关系，详细介绍了应用于信令中继系统中的ASN．1编解码模块的设计和实现。     

Platform-Based MPEG-4 SOC Design for Video Communications

An MPEG-4 video coding SOC design is presented in this paper. We adopt platform-based architecture with an embedded RISC core and efficient memory organization. A motion estimator supporting predictive diamond search and spiral full search is implemented for compromise between compression performance and design cost. The proposed data reuse scheme reduces required memory access bandwidth. For texture coding path, an interleaving DCT/IDCT scheduling with substructure sharing technique is proposed. Several key modules are integrated into an efficient platform in hardware/software co-design fashion. The cost-efficient video encoder SOC consumes 256.8 mW at 40 MHz and achieves real-time encoding of 30 CIF (352×288) frames per second. Yung-Chi Chang was born in Kaohsiung, Taiwan, R.O.C., in 1975. He received the B.S. and M.S. degrees from the Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan, R.O.C., in 1998 and 2000, respectively, where he is currently pursuing the Ph.D. degree in the Graduate Institute of Electrical Engineering. His research interests include video coding algorithms and VLSI architectures for image/video processing. Wei-Min Chao was born in Taoyuan, Taiwan, R.O.C., in 1977. He received the B.S. and M.S. degrees from the Department of Electronics Engineering, National Taiwan University in 2000 and 2002 separately. His research interests include video coding algorithms and VLSI architecture for image and video processing. Chih-Wei Hsu was born in Taipei, Taiwan, in 1979. He received the B.S.E.E and M.S.E.E degrees from National Taiwan University (NTU), Taipei, in 2001 and 2003, respectively. He joined MediaTek, Inc., Hsinchu, Taiwan, in 2003, where he develops integrated circuits related to multimedia systems and optical storage devices. His research interests include object tracking, video coding, baseband signal processing, and VLSI design. Liang-Gee Chen was born in Yun-Lin, Taiwan, in 1956. He received the B.S., M.S., and Ph.D. degrees in electrical engineering from National Cheng Kung University, Tainan, Taiwan, in 1979, 1981, and 1986, respectively. He was an Instructor (1981-1986), and an Associate Professor (1986-1988) in the Department of Electrical Engineering, National Cheng Kung University. In the military service during 1987 to 1988, he was an Associate Professor in the Institute of Resource Management, Defense Management College. In 1988, he joined the Department of Electrical Engineering, National Taiwan University. During 1993 to 1994 he was a Visiting Consultant of DSP Research Department, AT & T Bell Lab, Murray Hill. In 1997, he was a visiting scholar of the Department of Electrical Engineering, University of Washington, Seattle. During 2001 to 2004, he was the first director of the Graduate Institute of Electronics Engineering (GIEE) in National Taiwan University (NTU). Currently, he is a Professor of the Department of Electrical Engineering and GIEE in NTU, Taipei, Taiwan. He is also the director of the Electronics Research and Service Organization in Industrial Technology Research Institute, Hsinchu, Taiwan. His current research interests are DSP architecture design, video processor design, and video coding systems. Dr. Chen has served as an Associate Editor of IEEE Transactions on Circuits and Systems for Video Technology since 1996, as Associate Editor of IEEE Transactions on VLSI Systems since 1999, and as Associate Editor of IEEE Transactions on Circuits and Systems II since 2000. He has been the Associate Editor of the Journal of Circuits, Systems, and Signal Processing since 1999, and a Guest Editor for the Journal of Video Signal Processing Systems. He is also the Associate Editor of the Proceedings of the IEEE. He was the General Chairman of the 7th VLSI Design/CAD Symposium in 1995 and of the 1999 IEEE Workshop on Signal Processing Systems: Design and Implementation. He is the Past-Chair of Taipei Chapter of IEEE Circuits and Systems (CAS) Society, and is a member of the IEEE CAS Technical Committee of VLSI Systems and Applications, the Technical Committee of Visual Signal Processing and Communications, and the IEEE Signal Processing Technical Committee of Design and Implementation of SP Systems. He is the Chair-Elect of the IEEE CAS Technical Committee on Multimedia Systems and Applications. During 2001--2002, he served as a Distinguished Lecturer of the IEEE CAS Society. He received the Best Paper Award from the R.O.C. Computer Society in 1990 and 1994. Annually from 1991 to 1999, he received Long-Term (Acer) Paper Awards. In 1992, he received the Best Paper Award of the 1992 Asia-Pacific Conference on circuits and systems in the VLSI design track. In 1993, he received the Annual Paper Award of the Chinese Engineer Society. In 1996 and 2000, he received the Outstanding Research Award from the National Science Council, and in 2000, the Dragon Excellence Award from Acer. He is a member of Phi Tan Phi.     

位置检测装置——光电编码器

介绍了光电编码器结构及相关电路与提高测量精度的方法 ,分析了四倍频等电路的工作原理。     

基于算法容错中的编码方法

论述了基于算法容错技术的基本思想以及用于该容错技术的线性码的结构，并分析了加权校验和容方案在实际计算系统中的性能，同指出了目前有待进一步研究的几个问题。     

The Development and Application of a Planar Encoder Measuring System for Performance Tests of CNC Machine Tools

In this paper, a measuring device with a planar encoder is developed to test the performance of a CNC machine tool. With the assistance of a PC, this system can be employed for both 2D contouring tests and 3D positioning tests for a CNC machine tool. The structure and the principle of the system, the applications for the general 2D contouring test, the drift test, and the specified geometric part path tests. An actual case study on improving the accuracy of machining a cam are described. Finally, a new 3D positioning method using the optic encoder is demonstrated. ID="A1"Correspondance and offprint requests to: Dr W. Jwye, 64 Wenhua Road, National Huwei Institute of Technology, Huwei, Yunlin, Taiwan 632. E-mail: Jywe@sunws.nhit.edu.tw     

交流永磁同步电机控制器的设计与实现

介绍了矢量控制的原理,并运用TI公司的高性能数字信号处理器TMS320F2811进行三相永磁同步电机空间矢量控制器的设计;设计方案分为硬件设计和软件设计两个部分,硬件设计部分详细介绍了硬件系统设计方案,并提供了编码器电路、电流检测电路、过流保护电路;软件设计部分介绍空间矢量控制算法的设计与实现,对电流环和转速环的控制算法进行了详细说明;通过实践检验,该系统符合设计要求,具有控制精度高、反应速度快等优点.     

基于全数字伺服控制单元的位置控制系统设计

阐述了基于全数字伺服控制单元的位置控制系统的特点,并且对运动控制算法进行分析,介绍了欧姆龙公司最新推出的新型全数字交流伺服控制单元MCW151的原理和性能,阐述基于交流伺服控制单元MCW151的位置控制系统的特点,并且设计了一种新的高精度伺服控制系统。     

绝对值型编码器数据采集设计

编码器是广泛用于角度和位置测量的传感器.绝对值型编码器数据采集设计就是通过单片机对绝对值型编码器进行控制,实现了对旋转角度的无误差测量,从而保证了系统的精度.