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溫室3P3R機(jī)械臂系統(tǒng)動(dòng)力學(xué)建模與分析
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中國(guó)博士后科學(xué)基金資助項(xiàng)目(20100470992)


Dynamic Modeling and Analysis for 3P3R Universal Manipulator in Greenhouse
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    摘要:

    針對(duì)溫室等設(shè)施農(nóng)業(yè)環(huán)境,設(shè)計(jì)了一種具有3P3R機(jī)械臂結(jié)構(gòu)的機(jī)器人,為了分析機(jī)械臂的操作性能并實(shí)現(xiàn)精確運(yùn)動(dòng)控制,對(duì)機(jī)械臂進(jìn)行了運(yùn)動(dòng)學(xué)和動(dòng)力學(xué)分析;采用Kane方法和旋量理論分析方法建立了機(jī)器人的操作臂運(yùn)動(dòng)學(xué)和動(dòng)力學(xué)模型,利用該模型,針對(duì)原理樣機(jī)的具體結(jié)構(gòu),在Mathematica環(huán)境下研究了機(jī)械臂的操作性能,得到在一定作業(yè)任務(wù)規(guī)劃下,末端執(zhí)行器的位姿變化規(guī)律,以及按照該規(guī)劃軌跡運(yùn)動(dòng)時(shí)各關(guān)節(jié)的驅(qū)動(dòng)力;結(jié)果表明,結(jié)合了Kane方法和旋量理論的動(dòng)力學(xué)模型具有準(zhǔn)確、簡(jiǎn)單、有效等特點(diǎn),能夠滿足機(jī)械臂的運(yùn)動(dòng)學(xué)、動(dòng)力學(xué)分析的要求。

    Abstract:

    A universal type 3P3R manipulator in the facility agriculture environment such as greenhouse was designed. The kinematics and dynamics of the manipulator were analyzed for operating performance and accurately motion control acquired. The Kane’s method and screw theory were applied to set up the kinematics and dynamics models, respectively. Then in accordance with the models for the manipulator and the structure of the prototype robot manipulator, the operating performance of the manipulator was studied in the Mathematica environment. The orientation variation of the end-effectors and all joint driven torques of the system were obtained according to the planning motion. The result indicates that the correctness, simplicity and validity of the model are verified. Therefore, the dynamic requirements of the manipulator are satisfied with high dexterity. And this research established a foundation for trajectory planning and accurately motion control.

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焦有宙,丁攀,趙大旭.溫室3P3R機(jī)械臂系統(tǒng)動(dòng)力學(xué)建模與分析[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2012,43(5):179-183. Jiao Youzhou, Ding Pan, Zhao Daxu. Dynamic Modeling and Analysis for 3P3R Universal Manipulator in Greenhouse[J]. Transactions of the Chinese Society for Agricultural Machinery,2012,43(5):179-183.

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  • 在線發(fā)布日期: 2012-06-07
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