主从式测控系统的远程在线监测

在构建了一个基于CAN总线的主从式测控系统的基础上,利用Borland Delphi 7 开发了一个以MIDAS作为中介透明引擎的多层次公布应用系统,实现了通过Internet对该主从式测控系统进行远程在线监测.     

支持多种通信规约的RTU仿真测试系统

本文介绍了一种支持多种通信规约的RTU仿真测试系统，只需在被测试的RTU前使用该测试系统，就能方便测试使用多种通信规约的RTU能否正常工作，减少了新建厂站投入使用的调试时间。它还可以广泛用于电力自动化设备生产厂家的产品通信功能测试，为发现，分析，解决电力系统自动化设备通信问题提供强有力的分析工具。     

Sliding mode based feedback linearizing controller for grid connected multiple fuel cells scenario

The energy demand is growing at a fast rate around the globe. The conventional power generation technologies may not meet the environmental constraints. Hence, a Solid Oxide Fuel Cell based power generation unit is considered as distributed generating source here, in this paper. An integrated operation of two units is done with a master–slave control strategy. Voltage source converters are used to interface nonconventional energy sources with grid, in general. However, these systems are highly nonlinear and coupled systems. Hence conventional PI controller will not give satisfactory performance for changing operating conditions and uncertain load changes. Hence, feedback linearization scheme has been formulated, which uses nonlinear transformation by means of diffeomorphism mapping to convert nonlinear models into linear models. Sliding mode control technique has been incorporated in the feedback linearized control to address the issues of uncertainty and to add robustness to the control algorithm. The developed control algorithm is tested for different dispatches, load uncertainties, decoupling of control variables and finally the variable grid frequency within a small band.     

Profibus现场总线Profibus-DP冗余通讯网络研究

对Profibus现场总线的Profibus-DP通讯网络(DP通讯网络)的研究主要集中于主站与从站的完整通讯网络的建立。以冗余技术的站节点和通讯线路为研究对象,介绍了不工作和工作两类备用主站,且将不工作备用主站分为快速冗余基本型和快速冗余改进型2种,以及工作备用主站系统冗余型共计3种模式,并阐述了各模式的Profibus-DP冗余通讯网络的实现方式及其优、缺点。快速冗余基本型备用主站节点冗余,通讯线路不冗余;快速冗余改进型备用主站弥补了快速冗余基本型备用主站通讯网络不冗余的缺点。     

主支式排烟道中主烟道模截面尺寸的确定

高层住宅主支式排烟道的主烟道中烟气流动向看作是一维定常垂直摩擦管流。通过计算管流流动相与颗粒相的物理参数沿管程分布情况，确定了颗粒相流动情况，进而判断烟气排放情况，这采到排烟系统高度，烟道管径，及材料组成等因素的影响，通过预调排烟系统高度并保证良好排放情况，求得主烟道管径应满足的条件，这使得布设排烟道时可以找到一个较好的横截面尺寸，既满足气排放条件，又节约修建材料。     

Real-time humanoid whole-body remote control framework for imitating human motion based on kinematic mapping and motion constraints

In this paper, we propose a whole-body remote control framework that enables a robot to imitate human motion efficiently. The framework is divided into kinematic mapping and quadratic programming based whole-body inverse kinematics. In the kinematic mapping, the human motion obtained through a data acquisition device is transformed into a reference motion that is suitable for the robot to follow. To address differences in the kinematic configuration and dynamic properties of the robot and human, quadratic programming is used to calculate the joint angles of the robot considering self-collision, joint limits, and dynamic stability. To address dynamic stability, we use constraints based on the divergent component of motion and zero moment point in the linear inverted pendulum model. Simulation using Choreonoid and a locomotion experiment using the HUBO2+ demonstrate the performance of the proposed framework. The proposed framework has the potential to reduce the preview time or offline task computation time found in previous approaches and hence improve the similarity of human and robot motion while maintaining stability.     

PC机串口与多个单片机红外无线通信的实现

本文介绍了用红外线实现上位PC机和多个单片机间的无线串行通信的新方法,给出了硬件线路图、通信协议和程序流程图及用VB6.0和MCS51汇编语言编写的部分串行通信程序。     

Visual FoxPro 环境下主从网络的实时通信方法

介绍上位机在运行ＶｉｓｕａｌＦｏｘＰｒｏ 应用程序的环境下, 与单片机网络以主从方式进行实时通信的方法, 详述了系统结构、通信原理及过程     

西门子6se70系统在中厚板生产线上的应用

介绍西门子6se70整流回馈、逆变在唐钢中厚板生产线的应用,并介绍主／从控制调试,以及常见故障的处理。唐钢中厚板公司3500中板生产线于2006年9月投产,辅传辊道、压下电机、双边剪夹送辊均采用西门子6se70。该系统是全数字电压型、采用IGBT功率器件模块化结构的通用系列标准产品．其主要特点有整流单元带能量回馈制动、可以实现转矩限定、磁场。     

大角度离子注入机控制系统的研制

介绍了大角度离子注入机控制系统的功能,重点介绍了系统的总体设计和控制模块的设计、主控计算机与子控制器之间的通讯以及控制系统的软件结构设计等。经实验证明,该控制系统稳定、可靠。