A Study on PC/104 Embedded Automatic Balancing Control System

In this paper,an embedded real-time control system for automatic rotor balancing was studied.Benefiting from the modular design,this system can be easily re-constituted or expanded under different working conditions.The special designed hardware resists harsh environment.As an embedded application,it was very important to save system consumptions on both hardware and software,so the algorithms for unbalance vibration identification and attenuation were deduced,meantime a unified fast algorithm structure was achieved through the geometric analysis.Based on this structure,the signal processing algorithm was tested by an open data source,while the control algorithm was simulated using a basic rotor model,and then connected to a hyper gravity machine running online auto-balancing.The result confirms that the unbalancing vibration is effectively restrained.

High Efficiency PCS with Scan-Type MPPT Control for a Grid-Connected PV Power Generation System

For a standalone PV （photovoltaic） power generation system, the author previously proposed a new MPPT （maximum power point tracking） control method in which the I-V characteristics are scanned with a detection interval control that operates at specified intervals and monitors the maximum power point. The author has obtained satisfactory results using this new MPPT control method. This paper investigates the application of the new MPPT control method for a PCS （power conditioning system） in a grid-connected type PV power generation system. The experimental results clearly demonstrate that the developed PCS offers outstanding effectiveness in tracking the maximum power point in partially shaded environments.

PC-Based Automated Control System for Jordan Northern Grain Silo

This paper presents a PC-based automated control system operation of the Northern Grain Silo of Jordan. The system connects to a PLC (programmable logic controller) device, and combines operator interface, PLC programming and monitoring functions into one platform. The PLC portion handles direct operations control, while the PC portion handles interfacing and data intensive functions. A simulation package is developed. The package generates a graphical user interface for real-time graphic animations of the Grain Silo operation. We discuss anticipated benefits of such a system and phases of implementation.

Home control system based on ZigBee wireless sensor networks

A new scheme of the home control system based on ZigBee wireless sensor networks is presented. The design and development of the software and hardware of the proposed system are given. In addition to the basic data acquisition and processing functions, the gateway supports the Bluetooth-based local interface and the general packet radio service （GPRS）-based remote interface. Users on the client service side can use a pocket PC or notebook PC to achieve real-time data acquisition and control instruction implementation, or remotely control the home control system through a mobile phone by sending a short message. The Labview graphical development environment is adopted to create PDA applications running on pocket PCs and monitoring platform established on notebook PCs. Except for the gateway, other nodes in the system work in sleep mode most of the time on the system, and thus it improves the lifetime of the whole system efficiently.

Performance Enhancements in the EAST Digital Plasma Control System

The EAST plasma control system （PCS） is in continuous development to satisfy the EAST experimental requirements. In order to realize low latency and distortion-free signal transmission between PCS and servo systems such as the poloidal field power supply, in-vessel coil power supply and real-time scope, reflective memory boards （RFM） were applied. The new hardware layout and enhanced performance are reported. Newly implemented PCS control algorithms for gas control and real-time data display are also presented.

A 40 Gb/s SerDes Transceiver Chip with Controller and PHY in a 65 nm CMOS Technology

A 40 Gb/s full serializer and deserializer (SerDes) transceiver with controller and physical layer (PHY) is presented.The controller mainly contains protocol transmission, forward error correction and user layer build-in self-test (BIST).The physical coding sub-layer (PCS) provides the functions of 64/66 encoder/decoder, PHY BIST, and polarity control.In the physical medium attachment (PMA), both transmitter (TX) and receiver (RX) adopt quarter-rate architecture to relax the timing constraint and reduce power dissipation.The receiver utilizes the phase interpolator (PI) based clock and data recovery (CDR) with bang-bang phase detector (BBPD) to extract the synchronic clock for retiming and de-multiplexing.The multiple-MUX based 4-tap FFE and a two-stage cascade CTLE are employed to mitigate the inter-symbol interference (ISI).In addition, a proposed 4∶1 MUX is used to improve the output jitter performance and reduce the power consumption.Fabricated in a 65 nm CMOS technology, the full transceiver consumes 890 mW at 40 Gb/s and occupies 12 mm 2 .The measurement results show that this transceiver can achieve bit error rate (BER)< 10 -12 after a 15.3 dB loss channel at 20 GHz.

Development of the simulation platform between EAST plasma control system and the tokamak simulation code based on Simulink

Plasma control system（PCS）,mainly developed for real-time feedback control calculation,plays a significant part during normal discharges in a magnetic fusion device,while the tokamak simulation code（TSC） is a nonlinear numerical model that studies the time evolution of an axisymmetric magnetized tokamak plasma.The motivation to combine these two codes for an integrated simulation is specified by the facts that the control system module in TSC is relatively simple compared to PCS,and meanwhile,newly-implemented control algorithms in PCS,before applied to experimental validations,require numerical validations against a tokamak plasma simulator that TSC can act as.In this paper,details of establishment of the integrated simulation framework between the EAST PCS and TSC are generically presented,and the poloidal power supply model and data acquisition model that have been implemented in this framework are described as well.In addition,the correctness of data interactions among the EAST PCS,Simulink and TSC is clearly confirmed during an interface test,and in a simulation test,the RZIP control scheme in the EAST PCS is numerically validated using this simulation platform.

Research on A Master - slave Multi - microcomputers Control System for Hollow Spindle Fancy Yarn Spinning Machine

In this paper, a successfully studied and developed master - slave muld - microcomputers control system based on PC - BUS for hollow spindle fancy yarn spinning machine, mainly Its overall scheme, software and hardware construction, is introduced. Spinning experiments show that the system achieves satisfactory result. This system can solve the diftkultles of mechatronical fusion between domestic hollow splndk fancy yarn spuming muchine and its microcomputer control technology.

Power control scheme for multiple antenna systems with space-time coding in Rayleigh fading channels

Two optimal power control （PC） schemes under the power constraint for space-time coded multiple input multiple output systems over the flat Rayleigh fading channel with the imperfect channel state information （CSI） are presented. One is based on the minimization of a bit error rate （BER）, and the other is based on the maximization of a fuzzy signal-to-noise ratio. In these schemes, different powers are allocated to individual transmit an- tennas rather than equal power in the conventional one. For the first scheme, the optimal PC procedure is developed. It is shown that the Lagrange multiplier for the constrained optimization in the power control does exist and is unique. A practical iterative algorithm based on Newton＇s method for finding the Lagrange multiplier is proposed. In the second scheme, some existing schemes are included, and a suboptimal PC procedure is developed by means of the asymptotic performance analysis. With this suboptimal scheme, a simple PC calculation formula is provided, and thus the calculation of the PC will be straightforward. Moreover, the suboptimal scheme has the BER performance close to the optimal scheme. Simulation results show that the two PC schemes can provide BER lower than the equal PC and antenna selection scheme under the imperfect CSI.

Upgraded Poloidal Field Control System for HT-7 Tokamak

This paper reviews how we have designed the upgraded poloidal field control system on HT-7 superconducting Tokmak by applying advanced computer technologies and Multivariable decoupling control theory. This paper emphasizes on designing the method of the control system,including system components and their functions.

基于ZYNQ-7000的飞控计算机PC/104总线数传链路设计

针对飞控计算机面向多模块、多种类接口资源方向发展引发的原有飞控计算机固有性能不足、可拓展性差的问题,提出一种基于ARM+FPGA的软硬件协同工作、以PC/104作为多模块间通信总线的飞控计算机框架。该框架中针对PC/104总线与系统主存传输的带宽不匹配问题,设计了双通道数据缓冲路径,通过FPGA设计IP实现PC/104总线时序的控制,以DMA的方式实现总线与主存DDR之间的高速数据缓存。实验结果表明,所设计的飞控数据链路可实现模块间PC/104总线以40 Mb/s的速度进行数据传输,以及通过总线实现外设到系统主存之间微秒级别延迟的高速数据交换,保证了多模块工作时的数据传输效率。

基于PC架构的可编程控制器发展趋势及其在风电控制领域的应用

基于PC架构的可编程控制器(PC-Based PLC)是在PC平台和嵌入式操作系统基础上开发的可编程控制器。在风电机组级控制系统(包括主控系统、变桨系统、偏航系统、状态监测系统等)、风电场站级监控系统(包括SCADA系统、AGC、AVC系统等)领域,PC-Based PLC均有广泛应用。对PLC可编程控制器的PC架构、基于PC-Based PLC的风电机组控制系统技术架构等进行了阐述,结合双馈型风电机组控制系统分析了风电机组控制系统的发展现状及存在问题,同时结合云化、分布式、边缘计算等工业控制前沿方向分析了PC-Based PLC在风电控制领域的技术发展趋势。

PC构件施工质量控制研究

PC构件作为一种新型的建筑建材,近年来得到了广泛的应用和发展。然而,PC构件由于本身的特殊性和复杂性,其施工质量控制成为了一个备受关注的问题。例如,构件设计质量和加工精度不达标,安装、浇筑连接不规范等,不仅影响了建筑物的整体性能,也给工程质量带来了潜在的风险。对此,文章结合绿动创意之家工程实例,围绕PC构件的施工质量控制展开了研究,旨在提出有效的控制策略,为工程实践提供理论支持。

PC生产线自动布料机研究

混凝土预制件(Precast Concrete,PC)生产线是支撑建筑产业工业化和现代化发展的关键装备,布料机是PC生产线的核心设备,对生产线的自动化程度、可靠性、工作效率及构件质量有着决定性影响。通过研究自动布料机布料装置和控制系统,提供一种切实可行的自动布料解决方案,同时指出布料机未来的发展方向。

基于PCS7和Simulink的过程控制虚拟仿真实验平台开发

为了解决过程控制实验DCS硬件成本高、学生的实验效率低等问题,提出一种基于PCS7和Simulink的虚拟实验平台开发方案。该方案利用Simulink提供的子系统搭建实际工业对象模型,在PCS7中组态过程控制算法,通过OPC通信进行实时仿真。以双容水箱液位控制实验为例,介绍了整个实验平台的搭建过程。实际教学效果表明,该实验平台减少了硬件成本,激发了学生的实验兴趣,提高了实验效率。

基于嵌入式PC的工业机器人开放式控制系统交互控制的实现

为了满足多自由度关节型工业机器人多机交互控制的需求,以嵌入式工业PC为硬件平台,RT-Linux操作系统为软件平台,采用模块化的软件设计方法,设计了工业机器人开放式控制系统。该系统采用共享内存的方式实现内外部信号的交互,通过执行PLC程序中定义的不同的M指令来实现与外部系统的交互控制功能。在浇铸机器人交互控制中的实际应用表明:该控制系统开放性好,实时性强,运行稳定可靠。

基于PC的开放式数控系统研究

传统的计算机数控(CNC)系统大多采取封闭式设计,产品的彼此不兼容使得数控系统难以进行结构的改变和功能的扩展。开放式数控系统解决了这一问题,已经成为当前CNC技术发展的必然趋势。本文介绍了开放式数控系统的产生和发展,对基于PC的开放式数控系统结构进行了概述。探讨了以PC机和运动控制卡为基础构建开放式数控系统硬件平台的方法,并讨论了基于W indows 2000的数控系统软件结构。

基于工业PC机的果树采摘机器人控制系统设计

针对果树采摘机器人控制系统,本设计中硬件平台采用KP-6420i型工控机和RS-232转RS-422转换器的控制结构构成,这样的硬件系统具有模块化,成本低,易实现的特点。视觉系统采用VFW图像采集系统,它可以直接访问视频缓冲区,不需要生成中间文件,实时性高,可以满足果树采摘机器人对图像实时处理的速度要求。软件基于VisualC++6.0开发环境,通过串行通信实现对机械臂的运动控制,最后通过实验验证了设计的合理性和有效性。

基于PCS7的过程控制实验设计

针对传统过程控制实验存在的一些缺点,基于西门子过程控制系统PCS 7设计了电厂锅炉综合自动控制系统,其中包括了过热蒸汽出口温度控制系统、燃料和送风控制系统、给水控制系统等。利用PCS 7中连续功能图(CFC)和顺序功能图(SFC)及仿真设备SMPT1000,实现各个回路的控制策略。实验结果表明,所设计的实验系统能够进行无扰切换,稳定运行,具有较强的抗干扰能力,且超调量小,响应速度快。

基于 PC 平台的计算机数控(CNC)系统开发

利用微机平台开发ＣＮＣ系统是当前ＣＮＣ技术发展的一个重要趋势。本文分析了国内外数控系统发展的现状和在ＰＣ平台基础上开发ＣＮＣ系统的可能性及必要性；论述了基于ＰＣ平台的超人ＣＮＣ系统的软、硬件结构和工作原理；阐明了前后台、多任务在系统中的实现方法；介绍了系统所达到的主要性能指标。利用双ＣＰＵ计算机控制，ＣＰＵ间采用双端口ＲＡＭ、并口中断、计数等方式进行协调通讯是系统控制的关键。该系统软、硬件已调试成功，已投入使用，并在应用中取得了良好的效果。