3转动1移动并联机器人机构的结构综合

利用螺旋和反螺旋之间的互易关系，分析了给定机构运动自由度与支链约束之间的关系，提出了基于螺旋理论的4自由度并联机器人机构结构综合的一种方法．据此构造了3转动1移动4自由度并联机器人机构的可能支链类型，列举了多种新型对称机构和非对称机构．所提方法对其它少自由度并联机器人机构的结构综合具有普遍意义．     

抛物线过渡的并联机器人线性轨迹规划

针对并联机器人工作空间较小,轨迹规划时易于越出工作空间范围这一不足,提出了应用直线两端加抛物线过渡实现位置和速度连续的轨迹规划方法．并通过实例和图线比较得出该方法更适合于并联机器人这类小工作空间运动规划的结论．最后说明了该方法的可靠性．     

平面冗余并联机器人的综合性能优化设计

对平面二自由度冗余并联机器人的综合性能优化设计进行了探讨.基于运动学模型,给出了该机器人的雅可比矩阵和最优拓扑构形,分析了结构参数对工作空间和奇异性的影响规律.提出了衡量机器人运动精度、力传递性能、结构刚度和工作空间利用率的综合评价指标,建立了以综合评价指标为目标函数,以任务空间和无奇异位形为约束条件的数学优化模型,并采用自适应遗传算法求解.研究为同类机器人的优化设计提供了参考.     

单平行四杆柔性铰链机构刚度特性分析

柔性铰链是并联微动机器人的柔性关节,其刚度特性直接影响到微动机构的定位精度。根据材料力学能量法推导了圆弧型柔性铰平行四杆机构刚度的解析式,利用ANSYS软件对柔性铰四杆机构刚度进行了验证,有限元分析结果与解析式的计算结果基本一致;并分析了柔性铰平行四杆机构的结构参数对其刚度性能的影响,为柔性移动副设计提供了有价值的参考。     

一种新型四自由度并联机构设计与分析

根据放大尺原理构建具有大缩放比的六自由度菱形运动支链和四自由度菱形运动支链,将其作为并联机构组成支链,提出一种具有结构紧凑、工作空间大的新型四自由度并联机器人机构．依据等效替换原理,将菱形机构虚拟轴用传统串联运动支链的实轴替代,得到新型四自由度并联机构的等效模型．利用螺旋理论分析了新型并联机构等效模型各支链的运动螺旋系和约束反螺旋系,确定并联机构动平台具有两个移动自由度和两个转动自由度．     

平面单轴柔性关节的力传递关系

采用变形叠加方法分析了柔性微动关节的受力（矩）变形位移过程,推导了柔性关节两端广义力传递的矩阵变换.以对称半圆弧曲线柔性关节为例进行分析,并与以往采用伪刚体方法进行运动学建模的分析结果相比较,其结果与有限元分析结果更接近,从而大大提高了模型精度.     

一种新型4自由度并联机器人自由度分析

采用对称结构的4自由度并联机器人一般是过约束机构。采用传统的机构学理论和方法对其运动自由度进行分析往往会得出错误的结论，现采用螺旋理论对一种新型的、结构对称的4自由度并联机器人进行了全面的自由度分析，证明了这种机构运动平台的自由度数目及其相应的自由度特性，为这种机构进一步深入的研究打下了基础。     

整体弹性关节微型机器人的力学平衡方程

介绍了整体弹性关节三自由度平面并联微型机器人传动力学的正、反解问题的建模过程，整体弹性关节机构由于受运动范围的限制故常在低下使用，其动力学问题便成了弹性静力平衡问题，然而其高度非线性和偶合性，使正解模型较为复杂，一般没有封闭解，文中采用Newton-Raphson迭代法介绍正解问题的求解过程，并利用Matlab6.1编程，通过实例计算说明了其应用。     

并联机器人机构及其在交通行业中的应用

通过与串联机构比较,说明并联机器人机构的优点,在此基础上,结合并联机构易于实现多轴耦合驱动、承载力大等优点,探索并联机器人技术在交通领域中的发展方向和主要应用成果。     

并联机器人误差敏感系数及其在工作空间内的分布

提出了衡量并联机器人操作精确程度的指标－－误差敏感系数,并给出了其在工作空间中的分布情况,这样不需知道每一结构参数的制造误差及输入参数的误差,就可以了解机器人在工作空间中哪些区域工作时操作精度高。     

Modeling Study of Planar Flexible Manipulator Undergoing Large Deformation

The planar flexible manipulator undergoing large deformation is investigated by using finite element method (FEM). Three kinds of reference frames are employed to describe the deformation of arbitrary point in the flexible manipulator, which are global frame, body-fixed frame and co-rotational frame. The rigid-flexible coupling dynamic equation of the planar flexible manipulator is derived using the Hamilton’s principle. Numerical simulations are carried out in the end of this paper to demonstrate the effectiveness of the proposed model. The simulation results indicate that the proposed model is efficient not only for small deformation but also for large deformation.     

铲装机械手全关节动力学及其解析

目前,铲装机械手的动力学解析主要针对主动关节进行,对从动关节的动力学问题还很少进行过研究.在铲装机械手阻力检测系统设计时,有时需要在从动关节处安装力传感器,并对传感器的输出进行动力项、静力项的分离.为此,本文以铲装机械手主动关节动力学解析为基础,对连杆的受力进行了全面分析,推导出了从动关节的动力学计算式.在对主动关节和从动关节动力学解析进行综合的基础上,提出了全关节动力学的概念,并给出了铲装机械手全关节动力学方程式.     

六自由度重载装配机械手运动学分析及求解

针对汽车装配生产线作业对重载高精度的自动设备的需求,设计了一种液压驱动的六自由度多功能重载装配机械手。运用Denavi-Hartenberg(D-H)方法构建了机械手的运动学模型,分析了重载装配机械手的工作原理和正、逆运动学求解方法。从机械手的正、逆运动学方程的求解结果可以看出,采用液压方式实现对机械手6个自由度的驱动,具有驱动力大、操作简单、安装准确的特点,可适应多种汽车重载装配的需要。     

Stability Study of Cable-Suspended Stewart Platform

The control stability of the end manipulator of a cable-suspended Stewart platform in disturbance was studied by combination of the multi-body system dynamics and control theory and the eigensystem realization algorithm (ERA). The corresponding closed-loop vibration control strategies were suggested based on position prediction with PD (proportional plus derivative) control.Numerical simulation was made on a scale model to study the vibration control effects of the stewart platform with flexible suspension, including system response to step load, system response to cyclic load, and instability. Then, experiments for Stewart platform with cable suspension were designed to study the actual control effects and validate the validity of numerical simulation. The results show that the experimental results agree with the simulation results well, and the the system has a fairly good control effect to the end manipulator. Therefore, a preliminary conclusion can be made that it is feasible using the Stewart platform as the vibration control platform of the flexible support system, by position prediction of the base platform and PD feedback control law.     

Development of a Robotic Cochlear Implantation System

Traditional cochlear implantation surgery has problems such as high surgical accuracy requirement and large trauma,which cause the difficulty of the operation and the high requirements for doctors,so that only a few doctors can complete the operation independently.However,there is no research on robotic cochlear implantation in China.In response to this problem,a robotic cochlear implantation system is proposed.The robot is controlled by robot operating system (ROS).A simulation environment for the overall surgery is established on the ROS based on the real surgery environment.Through the analysis of the kinematics and the motion planning algorithm of the manipulator,an appropriate motion mode is designed to control the motion of the manipulator,and perform the surgery under the simulation environment.A simple and feasible method of navigation is proposed,and through the model experiment,the feasibility of robotic cochlear implantation surgery is verified.     

锥齿轮淬火机械手装置的总体结构设计

本文所研究的淬火机械手要求完成锥齿轮在热处理线上从恒温渗碳炉到淬火压床间的送料和上料动作，严格控制锥齿轮在空气中的裸露时间，准确地夹取工件。本文着重讨论了该机械手装置的总体结构设计和工作原理。     

A comprehensive evaluation method for kinematic accuracy of space manipulator based on analytic hierarchy process

The kinematic accuracy of space manipulator determines whether the spacecraft performs normally or not. Problems pertaining to structural deformation have received increased attention in recent times. In the space manipulator systems, flexible arms and joints can induce drastic dynamic instabilities. In applications such as the space station, kinematic error due to structural deformation can jointly affect the performance characteristics. And it is crucial for accuracy control of space manipulator to establish a precision index. Here we analyze the dynamics characteristic of flexible space manipulator considering the hysteresis of harmonic reducer based on method of nonconstraint boundary modal. For the sake of describing the output accuracy, we integrate the method of analytic hierarchy process(AHP) to establish a comprehensive evaluation index. A numerical simulation is performed to analyze the nonlinear dynamic characteristics of space manipulator with harmonic reducer. With the analysis of accuracy assessment, the relation among the hysteresis angle, rigidity and output accuracy is revealed. Considering the elastic modulus of flexible space manipulator and the hysteresis angle of harmonic reducer, we conduct an evaluation of output characteristics of flexible space manipulator with the proposed comprehensive evaluation index. The accuracy evaluation of output characteristics based on the proposed comprehensive evaluation index is implemented in the initial stage of space manipulator’s design, which can not only solve the problems existing in the design but also save cost savings for ground tests. The results can be used in designing and optimizing future space manipulators, which may provide valuable references for design and thermal control of the space manipulator.     

具有运动轨迹记忆功能的机械手的解决方案

对机械手的控制系统中,在机械手运行过程中的任意位置,均能够按原运动轨迹返回提出了自己的看法,介绍了用F-40M型PLC作为控制设备,实现机械手的前进、暂停、沿原运动轨迹返回的解决方案,该解决方案可作为机械手控制系统中的一个组成部分来使用.