缆索涂装机器人模糊故障树分析

根据研制的缆索涂装机器人高可靠性要求,建立了以机器人不能完成高空爬升和涂装作业任务为顶事件的故障树,基于各底事件故障发生概率为三角形模糊数情况对故障树进行了模糊分析,并采用模糊数中值法计算各基本事件模糊重要度.故障树分析对该机器人成功进行现场试验提供了指导作用.     

Robot Calibration Using Active Vision-based Measurement

This paper presents an efficient robot calibration method with non-contact vision metrology. Using the coplanar pattern to calibrate camera made the active-vision-based end-effector pose measurement be a feasible and cost-effective way. Kinematic parameter errors were linearized and identified through two-step procedure, thus the singular and non-linear condition was overcome. These errors were then compensated using inverse model method. The whole calibration process is flexible, easy to implement and prevents the error propagation from the earlier stages to the later ones. Calibration was performed on MOTOMAN SV3 industrial robot. Experiment results show that the proposed method is easy to setup and with satisfactory accuracy.     

Active Error Compensating Welding Fixture System for Auto Body

The welding fixtures are the most important devices for an auto body welding assembly line. The current special fixtures used by many automotive manufactures are only fit for one or several specific welding processes, and the dimensional problem in the circle due to several variation sources accumulation has no adjustment. The active error compensating welding fixture system for auto body is designed and manufactured. The detecting model, coordinate transformation model, and adjusting model based on auto bo...     

溜冰机器人运动学分析

设计了腿轮混合结构的溜冰机器人，基于常规的运动学分析方法，建立了相关的惯性坐标系和滚轮坐标系，并根据滚轮在法向无滑动，切向作纯滚动的假设，建立了中心定位轮的运动约束方程及机器人的运动学模型，提出了法向和切向运动特征矩阵的概念，并讨论了机器人的移动性问题，得出机器人存在运动的条件，设计了溜冰机器人运动学状态空间表达式和运动学控制方程，以溜冰机器人为例，分析了其转弯和直线滑行时的运动学问题。     

电动连续式爬缆机器人设计理论分析与试验

在分析缆索曲线约束和爬升阻力等工作环境的基础上，提出一种采用铰链结构的电动连续式爬缆机器人结构模型，建立了其弹簧压紧力、车轮抱紧力等力学模型，并对样机研制实例进行了验算．研制的爬缆机器人具有液压控制的弹簧压紧装置，能在缆索上快速安装和安全收回．在实验室多次试验后，该机器人已在南浦大桥进行了现场试验．结果表明其能高效、可靠地爬升和涂装实际斜拉桥缆索全长．     

气动爬缆机器人气压分析与试验

针对索径变化较大、表面情况恶劣的缆索，提出了一种采用铰链结构的气动蠕动式爬缆机男人结构模型，建立了该机器人气缸受力与高空气压损失等理论模型，并对样机研制实例进行了验算．研制了工程样机并在上海徐浦大桥上成功地进行了现场试验．仿真和试验表明，机器人气体压力损失与施工距离、高度、系统耗气量、气管倾斜度等成正比例非线性变化；机器人下降时速度较上升时均匀性好，能在斜拉桥缆索上安全、高效爬升．     

面向缆索机器人的模糊灰关联综合评价方法

针对目前缆索的人工维护方式,研制了缆索1^#和缆索2^#维护机器人。根据缆索维护工程的特点,从技术、经济、实用、市场及环境五方面出发,提出了基于熵的模糊灰关联综合评价方法,建立了指标权重和模糊灰关联的评价模型,并对人工维护方式、缆索1^#、2^#维护机器人进行了综合评价,得到了方案优劣、排序和最优维护方案。基于熵的模糊灰关联综合评价方法有效地避免了各评价指标权重确定的主观性,正确处理了指标属性值的随机性、模糊性和灰色性。     

缆索类维护机器人对高空管道的线性动态响应

针对缆索落后的人工维护方式,研制了缆索类维护机器人以实现对缆索的自动清洗、检测、涂装等日常维护,分析了在高空管道维护中包括机器人质量在内的多参数对管道线性动态响应的影响,并根据机器人以不同速度在管道上运动作业所产生的动态响应进行了数值仿真。结果表明,移动机器人对管道的动态响应达到了静态响应的1．5倍。     

智能维护在轨道交通环境与设备监控系统中的应用

为了轨道交通的安全、高效运营,提出了基于轨道交通环境与设备监控系统的电子化协同智能维护平台.通过系统各模块之间的协作,使得环控系统中关键设备始终处于近乎"零"故障的状态.     

Direct and Inverse Kinematic Analysis of a Leg-wheeled Passive Wheel Mobile Robot - Ice-skater Robot

A new passive wheel type of leg-wheeled mobile robot based on rolling principle was introduced. To enhance the stability and maintain vertical to the ground of wheels, four passive wheels were installed at the end of four legs respectively and parallel mechanisms were used as legs. And an inertia coordinate system and a robot coordinate system were established, the related kinematic equation of the robot was gotten according to some assumptions after the configuration or the posture of wheels and legs was analyzed. At the same time, the turning conditions of the robot were also obtained. Based on the motion principle, the VSS-based logic control system was designed and the skating straight experiments and the turning experiments were conducted. And some conclusions were drawn.