arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2001.05443cs.LGcs.ROstat.ML
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使用进化计算和深度强化学习的机器人抓取操作

Robotic Grasp Manipulation Using Evolutionary Computing and Deep Reinforcement Learning

Center of Intelligent Robotics, Indian Institute of Information Technology, Allahabad(印度阿拉哈巴德信息技术学院智能机器人中心);Indian Institute of Technology (Indian School of Mines), Dhanbad(印度丹巴德印度理工学院(印度矿业学院))

Priya Shukla, Hitesh Kumar, G. C. Nandi

摘要:

智能物体的抓取操作是机器人面临的一个挑战性问题。与机器人不同,人类几乎立即知道如何操纵物体进行抓取,这是由于多年来的学习。一个成年女性可以比一个孩子更熟练地抓住物体,因为多年来发展的学习技能,在当今的机器人抓取中缺乏这种技能,迫使它的表现远远低于人类物体抓取基准。在本文中,我们已经采取了发展的挑战,学习为基础的姿态估计分解成位置和方向学习的问题。更具体地说,对于抓取位置估计,我们探索了三种不同的方法-基于遗传算法(GA)的优化方法,以最小化计算的图像点和预测的末端执行器(EE)位置之间的误差,基于回归的方法(RM),其中机器人EE和图像点的收集的数据点已经用线性模型回归,伪逆(PI)模型,其以具有机器人EE位置和用于若干观测的图像点的映射矩阵的形式被制定。此外,对于抓取方向学习,我们开发了一个深度强化学习(DRL)模型,我们将其命名为Grasp Deep Q-Network(GDQN),并将我们的结果与Modified VGG 16(MVGG 16)进行了基准测试。严格的实验表明,由于固有的能力,产生非常高质量的解决方案的优化问题和搜索问题,基于遗传算法的预测器的性能远远优于其他两个模型的位置估计。对于方向学习,结果表明,通过GDQN的离策略学习优于MVGG 16,因为GDQN架构是专门为强化学习而设计的。基于我们提出的架构和算法,机器人是能够抓住所有具有规则形状的刚体对象。

英文摘要:

Intelligent Object manipulation for grasping is a challenging problem for robots. Unlike robots, humans almost immediately know how to manipulate objects for grasping due to learning over the years. A grown woman can grasp objects more skilfully than a child because of learning skills developed over years, the absence of which in the present day robotic grasping compels it to perform well below the human object grasping benchmarks. In this paper we have taken up the challenge of developing learning based pose estimation by decomposing the problem into both position and orientation learning. More specifically, for grasp position estimation, we explore three different methods - a Genetic Algorithm (GA) based optimization method to minimize error between calculated image points and predicted end-effector (EE) position, a regression based method (RM) where collected data points of robot EE and image points have been regressed with a linear model, a PseudoInverse (PI) model which has been formulated in the form of a mapping matrix with robot EE position and image points for several observations. Further for grasp orientation learning, we develop a deep reinforcement learning (DRL) model which we name as Grasp Deep Q-Network (GDQN) and benchmarked our results with Modified VGG16 (MVGG16). Rigorous experimentations show that due to inherent capability of producing very high-quality solutions for optimization problems and search problems, GA based predictor performs much better than the other two models for position estimation. For orientation learning results indicate that off policy learning through GDQN outperforms MVGG16, since GDQN architecture is specially made suitable for the reinforcement learning. Based on our proposed architectures and algorithms, the robot is capable of grasping all rigid body objects having regular shapes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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