计算机-PLC在机械手远程控制系统中的应用

本文针对机械手的远程控制问题，选用三菱FX2N系列PLC作为控制器，以计算机为主站，实现了机械手的可视化远程控制。文中介绍了控制系统的组成，阐述了控制系统的设计方法。实践表明，上位机界面友好、简捷，数据传输正确、可靠，远程控制安全、稳定。     

网络远程控制作业机械手的设计与实现

随着网络等信息产业的发展,远程作业和智能设备的远程监控成为现代人生活发展的方向,远程通信则是一个值得研究的问题。本文以远程控制作业机械手的实例,介绍了远程串行通信的基本架构及实现过程,分析了直接控制机89C51硬件及其软件的设计与实现。     

面向机器人远程控制的本体建模及应用研究

在机器人远程控制系统的开发和应用中,各种控制参数、工件信息的多样化和复杂化的表示方式会给算法的具体实现带来许多问题.如何提高各个控制系统功能的通用性,在机器人远程控制领域具有重要的理论和现实意义.将本体(Ontol-ogy)和Web Service引入,侧重建立一个与机械手控制参数对象相关的本体库.并最终设计出一个基于本体库的语义WebService实现模型及其服务的组合框架.仿真结果证明实现了客户端与Web Service各组件间的异步通信,对于提高远程机器人控制系统的实时性和数据显示的有效性都具有重要的现实意义.     

六自由度机械手三维运动仿真研究*

以六自由度机械手三维运动仿真为背景,介绍了利用OpenGL实现机械手运动仿真的有效方法,重点分析了机械手运动学模型的构建以及运动轨迹规划的实现。对于一般的机械手运动仿真系统,该实例具有一般普遍性。     

五指形仿人机械手的设计与实现及示教

设计和实现了一个具有五个手指和手掌的仿人机械手（以下简称仿人机械手）,并利用数据手套对其进行了示教,使其能有效地完成复杂的作业。首先,以现有的仿人机械手研究成果为基础,对仿人机械手进行了优化设计和实现;然后,以数据手套为示教源,对仿人机械手示教模型进行了研究,采用D-H变换矩阵建立了仿人机械手的逆向运动学,解决了示教运动映射问题。最后,利用仿人机械手进行了若干作业实验,实验结果证明了仿人机械手及其示教模型的正确性。     

一种微细零件上下料机械手的设计与仿真

针对研制一种微细零件的CNC加工装备,提出了能快速反应的移动机械手的总体方案,实现仿人动作。基于多体系统运动学理论和齐次变换矩阵,建立了机械手的运动学模型,得出了机械手末端的向量方程,并在此基础上利用蒙特卡洛法求解上下料机械手的工作空间。对机械手的结构进行了适当简化后,将所建立的三维模型导入到Adams软件中进行运动学仿真,得到了机械手卜任意一点的位移、速度和受力等方面的分析曲线,对机械手控制的实现及物理样机的制作奠定了基础。     

基于CORBA技术的网络机器人的远程控制系统

解释了CORBA技术的原理与实现过程,提出了远程控制体系结构及硬件构架,给出了实现网络机器人的远程控制的具体解决方案.     

基于VxWorks操作系统的装源机械手控制系统实现

装源机械手是为油田勘探装取放射源服务的。机械手采用工控机作为控制核心部分,由工业控制卡实现信号的I/O。为实现实时控制,采用了VxWorks嵌入式实时操作系统。介绍了机械手的机械系统结构,工控机系统的硬件结构和控制流程的软件设计。     

基于Web Service的远程控制系统的研究与实现

随着远程控制技术在计算机网络的广泛应用,远程控制成为人们经常使用的技术。为了实现计算机网络的这种应用,方便人们对一些设备的集中管理,文章提出了一种基于Web Service的远程控制技术,结合使用了WSE和MQ等技术,以Saas为设计模式来实现一种可以灵活操作,灵活配置的远程控制平台。     

基于移动Agent的远程控制技术

文章讨论了基于移动Agent的远程控制技术的原理和远程控制Agent的内部结构，使用Socket在C 中的实现来描述Agent通信机制的实现过程。与传统模式的远程控制技术相比，基于移动Agent的远程控制技术具有节省通信带宽和时间、避免中间数据的传输延迟等优点。     

基于手势识别远程同步控制的智能机械臂研究

设计一种基于手势识别远程同步控制的智能机械臂系统,系统由手势识别器和智能机械臂组成;手势识别器穿戴在手中,能够感知和识别手势指令,并通过无线传输方式把手势指令传输给智能机械臂;智能机械臂收到手势指令后其自主决策系统迅速规划最优控制,实现同步控制机械臂伸展和机械手的抓取等动作;实验结果表明,手势识别器的手势指令简单易于操作,手势指令识别准确高效,智能机械臂动作规划协调,系统大大降低了机械臂的操控难度,完全满足作业任务实时控制的需要,具有较好的实用性和广泛的应用前景.     

An experimental remote handling system

An experimental robotic remote handling system is described which has been constructed in order to investigate various engineering problems in advanced remote handling such as the man-machine interface, system control and communication. The device consists of a mobile and a control station. The mobile station comprises an electrical manipulator having seven degrees of freedom, a TV camera, a control sub-computer, a servo-control unit, radio transmitters and receivers, batteries, etc., which are mounted on a crawler-type vehicle. The control station is equipped with the master arm of the manipulator, radio transmitters and receivers, a TV monitor, a main control computer and its peripheral devices, etc. The manipulator can be operated in either a master-slave, a playback or a programmed control mode with the assistance of control computers. Communication between the mobile and the control stations is made using optical fibres or a radio link.     

Teleoperation Over IP Network: Network Delay Regulation and Adaptive Control

This paper proposes a solution to control a remote manipulator robot (PUMA560) using IP network. A method is described to control this remote manipulator based on High-Order Sliding Mode so as to obtain a constant product time delay × bandwidth. Since previous method supposes a constant transmission delay, we put it over a low level mechanism (Network Delay Regulator) satisfying this criterion. This method eliminates the delay jitter in order to make remote estimation, prediction and control with a constant mean time delay. Under this condition, the stability condition of this algorithm is then studied. Some simulation results illustrate the performance of the High-Order Sliding Mode to dynamically force the remote system according to the Network Round Trip Time (NRTT).     

远程遥控移动机械手的可视化实时控制

采用OTG接口连接摇杆手柄的Android手机和无线视频传输方案,来实现对移动机械手的可视化实时控制。本设计以OMAP4430开发板和Android手机为核心,通过响应摇杆水平、竖直方向的移动事件和手柄按键事件来控制机械手的地表移动及机械手马达操作,同时借助车载USB摄像头拍摄720P视频,经H264编码后用无线网卡发送到Android手机,解码后显示在控制界面上。实验结果表明,可视化远程遥控机械手能够实现全方位移动、捉取地面目标等功能,同时无线视频传输帧率达到28fps,满足实时视频传输要求。     

Bilateral teleoperation through the Internet

This paper proposes a stable control structure for the bilateral teleoperation of robots through Internet. The problem is motivated by the increasing use of the Internet as a communication channel. Internet has a time-varying delay which depends on factors such as congestion, bandwidth and distance. In this work, we propose a control structure for the teleoperation of a manipulator robot with force feedback. Such a control structure includes state controllers (placed on the local and remote sites) and a time-delay compensation, which modifies the delayed position command generated by the human operator using the force that he feels in such a delayed moment and the current force between the slave and the remote environment. In addition, the proposed control scheme is designed considering a model of the communication channel. Finally, experiments of bilateral teleoperation of robots through Intranet and Internet are shown to test the performance and stability of the designed teleoperation system.     

Construction Methodology for a Remote Ultrasound Diagnostic System

In the present paper, we describe a method for constructing a remote ultrasound diagnostic system. Remote diagnosis can be realized using a communication network. We have developed a master–slave type remote medical system to diagnose shoulder diseases, such as dialysis-related amyloid arthropathy (DRAA), by ultrasonographic images. Proper positioning, orientation, and contact force between the ultrasound probe and the affected area of the patient are required in order to acquire proper diagnostic images. Safety and manipulability are also required when operating the remote medical system through a communication network. Therefore, the system has impedance control capability for positioning of the master and slave manipulators in order to convey the contact force and enhance manipulability. In addition, the system has continuous-path control capability for the orientation of the slave manipulator in order to realize smooth and accurate motion of the ultrasound probe, even if the sampling rate of the transmission of the orientation data of the master manipulator is not sufficient. The results of remote diagnostic experiments demonstrated that a healthcare professional could diagnose real patients through a communication network using the constructed system.      

State and Impedance Reflection Based Control Interface for Bilateral Telerobotic System with Asymmetric Delay

In this paper, we investigate state and imped-ance reflection based robust control strategy for bilateral shared telerobotic system under unsymmetrical time varying delay. Shared input for both master and slave robot is designed by combining delayed position and position-velocity signals with impedance reflection properties of the interaction between slave and environment and between human and master robot manipulator. Adaptive control algorithm is proposed to estimate the interaction properties between human and master manipulator and between slave and remote environment. Then, the delayed estimated interaction properties are reflected back to the master and slave robot manipulator to match with the estimated impedance properties of the interaction between human and remote environment. We combine robust term with adaptive control term to deal with the uncertainty associated with gravity loading vector, unmodeled dynamic and external disturbance. The stability conditions with time varying delays are derived by using Lyapunov-Krasovskii functional. Experimental results are given to demonstrate the validity of the proposed design for real-time applications.     

基于Internet的远程控制康复训练机械臂

针对上肢受伤和中风病人康复医疗的需要,将力反馈遥操作机器人技术应用于上肢受伤和中风病人的康复训练,研制了一种新颖的基于Internet的远程康复训练机械臂,使得医生可远程设定康复机械臂的训练模式和控制参数,从而控制机械臂,帮助在家中或社区医院的中风病人或上肢残障人员进行康复训练,医生利用反馈的视频图像及力反馈信息监控患者的训练状况.该系统可以大大提高医生的工作效率,方便广大中风病人和上肢残障人员.     

基于幂次趋近率的机械手滑模控制系统

为实现对机械手的快速高精度跟踪,采用滑模变结构控制算法对机械手进行控制。针对机械手在趋近滑模面的过程中所存在的抖震问题,在基于模糊补偿的鲁棒自适应控制的基础上,设计了一种基于趋近率的自适应模糊滑模机械手控制系统,使得系统能更快的趋近滑模面,削弱系统抖震现象。基于Matlab/Simulink仿真平台上搭建了机械手控制系统,仿真结果表明,加入趋近率能加快系统趋近滑模面,提高了系统的稳定性和跟踪性能。