本文選題：機械臂 + 避障��； 參考：《華北電力大學》2017年碩士論文

【摘要】：電力設備X射線移動平臺包含末端安裝有X射線機的機械臂,機械臂安裝在移動機器人上,利用移動平臺來進行X射線機的位姿調(diào)整,提高檢測的工作效率。由于變電站的GIS設備具有無規(guī)則性,機械臂在運動過程中需避開GIS設備以免發(fā)生損傷。本文主要研究機械臂末端在周圍環(huán)境有障礙物時能夠自主搜索出一條從初始位置到目標位置的規(guī)劃路徑,并且可以避開環(huán)境中的障礙物。機械臂路徑規(guī)劃研究主要有三個層次,首先需要機械臂的末端能夠從初始位置運動到設定的目標位置;然后要求機械臂能夠在此運動的過程中避開周圍環(huán)境中的障礙物;最后要對規(guī)劃出來的路徑進行優(yōu)化,使其在所有可能存在的路徑中處于最優(yōu)的選擇。本文在研究的對象為UR5機械臂,通過電力設備X射線無損檢測移動平臺的真實工作環(huán)境進行分析的基礎上,對UR5機械臂進行了相關機械臂避障路徑規(guī)劃的研究,主要包括:對UR5機械臂進行運動學建模,進行機械臂的運動學正解和運動學逆解的求解;研究傳統(tǒng)人工勢場法存在的缺點并研究問題的解決辦法,介紹幾種常用的碰撞檢測算法并分析各種碰撞檢測算法的優(yōu)缺點,研究一種新的圓柱碰撞檢測算法;運用改進的人工勢場法和圓柱碰撞檢測算法進行機械臂避障路徑規(guī)劃,并將規(guī)劃好的避障路徑導入UR5機械臂模擬器中得到相應控制文件,將控制文件導入機械臂控制版面對機械臂進行一個避障運動控制。本文最后對實驗室里的UR5機械臂進行了仿真實驗,實驗結果表明,運用改進的人工勢場法和圓柱碰撞檢測之后可以很好的避開周圍環(huán)境中的障礙物,達到了項目所需要的功能。
[Abstract]:The X ray moving platform of power equipment consists of a mechanical arm with an X ray machine at the end. The robot arm is mounted on a mobile robot. The position and pose adjustment of the X ray machine is carried out by using the mobile platform to improve the efficiency of the detection. Due to the irregular nature of GIS equipment in substation, the mechanical arm should avoid the GIS equipment in the process of movement to avoid damage. In this paper, it is studied that the end of the manipulator can search for a planned path from the initial position to the target position independently when there are obstacles in the surrounding environment, and can avoid the obstacles in the environment. There are three levels in the path planning of the manipulator. Firstly, it is required that the end of the manipulator can move from the initial position to the target position, and then the manipulator can avoid the obstacles in the surrounding environment. Finally, the planned path should be optimized to make it the best choice among all possible paths. On the basis of analyzing the real working environment of the mobile platform of power equipment X-ray nondestructive testing, this paper studies the obstacle avoidance path planning of UR5 manipulator. The main contents are as follows: the kinematics modeling of UR5 manipulator, the solution of forward kinematics solution and inverse kinematics solution of the manipulator, the study of the shortcomings of the traditional artificial potential field method and the solution of the problem. This paper introduces several commonly used collision detection algorithms, analyzes the advantages and disadvantages of various collision detection algorithms, studies a new cylindrical collision detection algorithm, uses the improved artificial potential field method and the cylindrical collision detection algorithm to plan the obstacle avoidance path of the robot arm. And the planned obstacle avoidance path is imported into the UR5 manipulator simulator to obtain the corresponding control file, and the control file is imported into the manipulator control version to control the obstacle avoidance motion of the manipulator. At the end of this paper, the simulation experiment of UR5 manipulator in the laboratory is carried out. The experimental results show that the improved artificial potential field method and cylindrical collision detection can avoid obstacles in the surrounding environment and achieve the functions required by the project.
【學位授予單位】：華北電力大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM507;TP241

【參考文獻】

相關期刊論文 前10條

1 于虹;;電力設備X射線數(shù)字圖像拼接技術研究[J];云南電力技術;2015年01期

2 郭濤濤;王達達;于虹;吳章勤;郭鐵橋;;曝光量在GIS設備X射線可視化無損檢測中的選擇應用[J];核電子學與探測技術;2012年05期

3 楊柳;張洪;高忠國;;基于人工勢場法的移動機器人路徑規(guī)劃研究[J];機床與液壓;2011年09期

4 葉煒W，

本文編號：2053634