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茄子收獲機器人機械臂避障路徑規(guī)劃
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    摘要:

    提出了一種茄子收獲機器人機械臂在笛卡爾空間的避障方法。將空間障礙物等效為可以用數(shù)學建模的圓柱扇環(huán),將三維空間的路徑規(guī)劃簡化為二維,提高了控制的實時性;將障礙從工作空間轉(zhuǎn)換到C空間中,使對機器人的控制直接作用于關節(jié),避免了使用雅可比逆陣進行復雜的坐標轉(zhuǎn)換。將C空間映射到圖像矩陣中,通過對圖像進行適當?shù)奶幚?,?guī)避了在使用A*算法尋優(yōu)時可能出現(xiàn)的失敗。實驗結(jié)果表明,該避障路徑規(guī)劃方法計算量小,實時性好,適合自然生長狀態(tài)下茄子的自動收獲。

    Abstract:

    A method was put forward to avoid obstacles for an eggplant harvesting robot manipulator in Cartesian space. The obstacles were supposed equivalently as cylindrical-rings, and then a three-dimensional planning path problem was simplified to a two-dimensional one, which improved the real-time control performance greatly. Transforming the obstacles from work-space to configuration-space could control the robot joints directly, which could avoid complex coordinate translation using Jacobian inverse matrix. Moreover, processing properly image matrix mapped from C space could avoid the path planning failure under A star algorithm. The experimental results show that this algorithm with less computational amount and excellent real-time performance is suitable for harvesting natural growing eggplant automatically.

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姚立健,丁為民,陳玉侖,趙三琴.茄子收獲機器人機械臂避障路徑規(guī)劃[J].農(nóng)業(yè)機械學報,2008,39(11):94-98.[J]. Transactions of the Chinese Society for Agricultural Machinery,2008,39(11):94-98.

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