TMS320LF2407型DSP和EPM7128型CPLD在移动机器人驱动与控制系统中的应用

为实现移动机器人的实时响应性和鲁棒性、实现多电机协调驱动算法和高效智能控制算法以适应复杂的作业环境,采用了面向数字控制应用的TMS320LF2407型DSP作为电机控制的主控制器,由DSP发出电机PWM控制信号,将其他传感器及数控接口集成到EPM7128型CPLD上,由CPLD输送到DSP,完成驱动系统的闭环控制.整个控制系统性能优异,硬件结构简单、经济、可靠.     

基于DSP与CPLD的逻辑分析仪设计

逻辑分析仪主要功能是分析测量数字系统的逻辑波形和逻辑关系。该设计采用了一个DSP芯片对8路数字信号进行高速采样,一个CPLD芯片控制示波器接口电路,以及一个双口RAM协调DSP和CPLD之间数据传输。逻辑信号按照预先设计的触发条件在特定时间段内采集。在CPLD里设计了一个具有28个状态的状态机来实现数据通道显示、时间线显示和触发位置显示。8路数字信号同时在示波器显示屏上显示,可以让用户比较直观地分析8路数字信号的相对关系。该设计最高可采集的数字信号在1MHz左右,允许设置1～3级的触发条件,并可以进一步扩展功能,非常适合数字系统实验和数字电路设计的需要。详细分析和介绍了该系统的软硬件设计和实现。     

基于DSP的无人机飞行控制系统的硬件实现

按照高性能和小型化的要求，设计并实现了基于DSP的新型无人机飞行控制计算机硬件的设计和开发。以TMS320C31 DSP为处理核心，采用CPLD实现外围扩展电路的片选、中断以及控制，包括AD转换、多串口通道和外部存储器的扩展。从而实现了丰富的模拟接口、方便灵活的数字接口和串行通信接口。文中详细给出了系统整体方案的分析设计和具体的硬件选型及接口设计。     

多通道同步数据采集及压缩系统

介绍一种基于CPLD和DSP的多通道同步数据采集及压缩系统.该系统采用复杂可编程逻辑器件(CPLD)和数字信号处理器(DSP)的体系结构,利用CPLD实现数据采集、缓冲、预处理,并协调系统各部分工作,利用DSP无损压缩采集数据,通过RS-422总线将压缩后的教据上传遥测系统;并对无损压缩的相关算法进行比较,最终采用算术编码(ARC)压缩算法,结论证实该系统切实可行,各项指标满足系统要求.该系统可应用于遥测多路噪声数据.     

基于DSP和CPLD技术的多路ADC系统的设计与实现

介绍了基于DSP和CPLD技术．高精度多通道的ADC系统的设计与实现方案，利用简单的硬件电路和软件编程，采用DSP和CPLD相结合的方法，动态地设置采样通道，控制模数转换器MAX1162的数据采样及传输。     

基于DSP的电力数据采集平台的设计与研究

介绍了一种用于电力系统的数据采集系统.该系统采用数字信号处理器(DSP)和复杂可编程逻辑器件(CPLD)作为核心芯片,给出了主要部分的电路及其原理、功能,系统中使用CPLD实现基本逻辑,使系统有足够的冗余和灵活性,具有可靠性高、可升级等优点.     

基于DSP的陈列声波信号采集与处理系统的设计

本文针对阵列声波信号的特点,设计了一个基于DSP的阵列声波信号采集与处理系统,并对总体方案中DSP、ADC、CPLD的设计以及DSP的编程进行了具体分析.该系统不仅满足性能的要求,而且还是一个通用的数据采集和处理平台.     

基于ADS8556的六通道高速数据采集系统设计

在数据采集系统中,高性能的DSP能够满足算法结构复杂、运算精度高、速度快的要求,CPLD具有内部延时小、速度快、全部逻辑由硬件完成等优点,因此,本系统设计了一种基于DSP＋CPLD的高速信号采集系统,选用DSP芯片TMS320F2812（以下简称2812）作为核心处理器,     

基于DSP与FPGA的数据采集及控制系统的设计

为扩展数据采集及控制系统的采集通道,提高系统灵活性,设计了一种以DSP与FPGA为核心的数据采集及控制系统。以DSP为主处理器,实现核心运算及系统控制,由FPGA完成数据采集控制,大大提高了系统的执行效率。     

用CPLD实现总线扩展

文中介绍了一种用CPLD实现的总线扩展技术，该设计具有灵活和可编程的特点，并在单片机和DSP外部总线扩展中得到了多次应用。     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.     

Diode-end-pumped Nd:YVO4/LBO lasers with 4.2W continuous-wave output at 457 nm

A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.     

Call for Papers

正Wireless Body-area Networks The last decade has witnessed the convergence of three giant worlds:electronics,computer science and telecommunications.The next decade should follow this convergence in most of our activities with the generalization of sensor networks.In particular with the progress in medicine,people live longer and the aging of population will push the development of wireless personal networks     

Call for Papers—Feature Topic,Vol.12,No.7,2015

正Information Centric Networking Information-Centric Networking(ICN) is an emerging direction in Future Internet architecture research,gaining significant tractions among academia and industry.Aiming to replace the conventional host-to-host communication model by a data-centric model,ICN treats data content as the first