一种新型简单6－SPS并联机器人及其位置正解

本文提出一种新型简单６－ＳＰＳ并联机器人机构，给出了它的变形型式并讨论了其位置正解．该机构的位置正解通过依次求解三个一元二次代数方程即可得到．本文最后给出了数值实例．     

基于神经网络的并联3自由度机器人位置正解

并联机器人位置正解是机器人运动学中难点问题之一，常规求解方法比较复杂且难度较大，通常需要对大量的非线性方程组进行推导计算且得到的解不唯一。该文提出了一种将人工神经网络用于并联机器人位置正解求解的通用方法，并结合实际机构对并联3自由度机器人进行了具体求解。通过对神经网络拓扑结构的设计以及选取有效的学习算法并用大量的位置反解数据对神经网络进行训练，获得了用于求解位置正解的神经网络模型，该网络可以实现位置正解问题的求解计算，从而避免了复杂的推导和演算。计算机仿真与实验结果表明了该方法的有效性与可行性。     

空间缩放式六自由度并联平台机构及位置分析

本文提出了一种以缩放机构为分支的新型六自由度空间并联机器人机构模型．文中讨论了它的机构学特点，给出了位置反解的方法，推导出了位置正解的８次封闭解法，并进行了数值验证．     

平面三自由度并联冗余机器人的位置分析

由于机构的结构复杂 ,对并联机器人进行位置分析 ,尤其是并联冗余机器人 ,要比串联机器人复杂得多 .本文提出一种新的平面三自由度并联冗余机器人位置分析方法 ,运用这种方法进行了位置正解和位置反解分析 .对于位置正解 ,其中方程的解最多为 4 ,说明这种平面并联机构可以有 4种不同的位姿 .对于位置反解 ,可以有16组解 .最后用数值实例进行了验证 ,给出了计算结果 .本文所提出的方法也为求解其它并联冗余机器人提供了新的途径     

基于位置反解算法的并联机器人坐标变换方法

目的为提高工作效率,提升工业机器人的可靠性、稳定性和运动精度,避免机器人出现速度以及加速度的突变,对机器人的位置进行准确的控制。方法 以RBT-6T03P并联机器人为例,应用坐标变化法和位置反解算法对并联机器人机构的位置坐标进行分析并利用MATLAB进行仿真。结果 结果表明：通过位置反解对并联机器人的坐标进行变换求解是方便可行。结论 所述控制方法相对于并联机器人求正解算法更加简单、方便、快捷。     

群论及其在机器人装配中的应用

本文介绍了群在机器人装配中的应用。首先简单介绍了机器人中常用的群及其基本性质；接着介绍了空间物体特征和表面参数的群表示；然后，讨论了如何用群表示装配工件相对位置关系和运动链；最后，介绍了群在机器人运动和装配规划中的应用。     

四元数法在4R机器人位置分析中的应用

四元数法应用于坐标变换中有计算量小、简洁方便的特点,在解决球面机构位置分析领域中有广泛的应用。本文将四元数法应用于一般4R机器人的各关节及末端位置分析问题中;根据该机构的结构参数和运动参数,运用Mathematica 8.0求得该机构末端位置的正解;并且推导出适用于解决该机构位置正解的一般性通用四元数公式。     

机器人机构精度研究的进展

本文就近年来机器人机构误差分析和精度综合等方面的文献资料进行了综合评述.特别是对机器人位置精度分析的基准位置、机器人机构的静态误差分析、动态误差分析、机器人手部位置误差的合成及补偿、位置精度综合及位置精度测试等方面的进展情况讨论得尤为详细.通过本文可对国内外机器人机构精度的研究现状有一概貌的了解.     

一种新型简单6—SPS并联机器人及其位置正解

本文提出了一种新型简单６－ＳＰＳ并联机人机构，给出了它的变形型式并讨论了位置正解，该机械的位置正解通过依次求解三个一一元二次代数方程即可得到。本文最后给出了数值实例。     

基于神经网络的机器人操作手IKP精确求解

结合位置正解模型，利用BP网络求解了机器人逆运动学问题（IKP）．为提高求解 结果精度，采用迭代计算进行误差补偿，计算结果表明，该法迭代次数少，计算精度高且计 算速度接近机器人实时控制的要求．     

On the dynamic model and kinematic analysis of a class of Stewart platforms

In this paper, a dynamic model for a class of Stewart platform (six degrees of freedom parallel link robotic manipulators) is derived by using tensor representation. A set of six Lagrange's equations are obtained. The kinematics analysis for a class of Stewart platform is conducted and a sixteenth order polynomial equation corresponding to the forward kinematic solution of the Stewart platform is obtained, which gives all possible global solutions of a manipulator configuration for a given set of six leg lengths.     

A New General-Purpose Method to Solve the Forward Position Problem in Parallel Manipulators

The method presented in this paper is a new approach to solve the forward position problem in parallel manipulators. Mechanisms are modeled as a set of nodes related by geometrical constraints. These form a system of equations that is solved using an iterative process. The procedure is systematic and is integrated in a software package for the analysis and simulation of mechanisms. Its high computational efficiency gives it the potential to be implemented in a velocity control scheme.     

机器人运动分析的一组新等式推证及应用

本文推证了一组刚体旋转矩阵与角速度矢的新等式，以该组等式为基础，文中提出并讨论了一种利用旋转矩阵的导数矩阵分析机器人运动的方法，所提方法在文中的运用表明，它可以取代以往过于繁琐的图解法和递推法，成为一种简明有效的机器人运动分析方法，作为该法应用结果，文中给出了由ｎ个杆件构成的ｎ个自由度机器人雅可比矩阵的一种简明封闭式，具有一定实和价值，这里的方法可作为一般刚体运动分析理论的补充。     

Dynamics and Cooperative Object Manipulation Control of Suspended Mobile Manipulators

Dynamics and control of mobile manipulators is obviously a more challenging problem compared to fixed-base robots. Including a suspension system for these mobile platforms increases their maneuverability, but considerably adds to their complexity. In this paper, a suspended wheeled mobile platform with two 6-DOF Puma-type manipulators is used to manipulate an object along a given path. To apply a model-based control algorithm, it is required to have an explicit dynamics model for such highly nonlinear system. This model should be as concise as possible to include fewer mathematical calculations for online computations. Therefore in this paper, a detailed set of dynamics equations for a multiple arm wheeled mobile platform equipped with an effective suspension system is presented. The method is based on the concept of Direct Path Method (DPM), which is extended here for such challenging type of robots. The obtained dynamics model is then verified with a dynamical analysis study using software ADAMS. Then, Natural Orthogonal Complement Method is used to include the non-holonomic constraint of the wheeled platform in a more concise dynamics model. Next, an impedance control law is applied for cooperative manipulation of an object by the two manipulators. The obtained results for a suspended wheeled platform equipped with two 6-DOF Puma-type manipulators reveal a successful performance for moving an object along a mixed circular-straight path, even in the presence of unexpected disturbing forces, system/end-effector flexibility and impacts due to contact with an obstacle.     

A simple method to solve the forward displacement analysis of the general six-legged parallel manipulator

In this work a simple method to solve the forward displacement analysis of the general 6-6 fully parallel manipulator is applied. The method is based on generating closure equations upon the unknown coordinates of three points embedded to the moving platform. The method is easy to follow and it is available for both, planar and three-dimensional moving platforms. Numerical examples are included with the purpose to show the application of the method.     

Mobility analysis and kinematics of the semi-general 2(3-RPS) series-parallel manipulator

This work reports on the kinematics of a series-parallel manipulator built with two zero-torsion tangential parallel manipulators assembled in series connection. Although this mechanism has been widely studied, there are some topics that must be revised, e.g. the mobility analysis here reported shows that the robot under study is not precisely a six degrees of freedom spatial mechanism as it has been commonly considered. Furthermore, the traditional hexagonal coupler platform is replaced with a three-dimensional platform which yields a mechanism with a more general topology. The forward and inverse displacement analyses of the robot are obtained in semi-closed form solutions based on simple closure equations which are generated upon the coordinates of three points embedded to the moving platform while the input–output equations of velocity and acceleration of the semi-general series-parallel manipulator are easily derived by resorting to reciprocal-screw theory. A case study is included in order to show the application of the method of kinematic analysis.     

智慧警务系统在地市公安局的应用研究

针对地市公安信息化建设的需求,首先研究智慧警务系统的总体架构,包括1个警务实战应用平台、1个数据中心和3个信息采集系统;其次,严格遵照软件系统架构标准提出警务实战应用平台设计方法,完成4个流程的业务模型分析和1个工具集的构建,平台利用工作流引擎支持相关业务流程的定制和调整。构建智慧警务数据中心平台,通过开放式云平台架构、大数据混合存储体系、大数据分析计算体系等关键技术应用,有效解决了地市公安局当前存在的数据分散存储、业务系统功能重叠和警务实战业务流程信息化程度不高等问题。该研究成果已被成功应用于全国公安数据标准化试点城市——邯郸市公安局警务实战应用系统建设项目中,对地市级公安信息化发展具有重要意义。     

Kinematics of a class of parallel manipulators which generates structures with three limbs

In this paper, the forward position analysis (FPA) of a class of parallel manipulators which can be modeled as structures with three limbs when the active joint rates, namely the generalized coordinates, are locked, is carried out using mixed and analytic procedures. The first option is a novel procedure which combines a numerical method and the closed-form solution of the geometry of a tetrahedron, that allows to find all the possible solutions for the FPA when specific requirements are satisfied. The second option is an analytic procedure capable of reducing a nonlinear system of three equations in three unknowns into a univariate 16th order polynomial equation, which evidently leads to a multiple solution. The introduction of linear equations, proposed in this contribution, obtained from the particular topology of these mechanisms simplifies considerably the FPA. In order to complement the kinematic analyses, the acceleration analysis of an exemplary parallel manipulator is approached by means of standard screw theory. Of course, as an intermediate step, this contribution also provides the velocity analysis of the chosen parallel manipulator. Finally, two numerical examples are provided.     

一种基于面向方面机制的模型转换方法

传统对象建模技术生成的PIM(Model Driven Architecture)一般是多重关注点混杂在一起的大型模型,该模型会导致PIM到PSM(Platform Specific Model)的模型转换工作较为困难.提出了一种基于面向方面机制的模型转换方法,该方法在模型层将系统横切关注点与核心关注点分离,单独建模为方面子模型,给出了方面PIM到方面PSM的转换规则,改进了对象建模生成的模型在转换中关注点混杂和对横切关注点管理的不足.