共查询到19条相似文献，搜索用时 156 毫秒
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翁伟 《福建工程学院学报》2016,(3):232-236
针对金属板料折弯工艺和更高精度的要求,提出基于人工智能神经网络的机器人折弯新技术。对机器人弯折工艺进行特征参数分析及提取,并建立改进算法的BP神经网络模型;比较了不同机器人折弯训练函数下的性能,建立更加有效的神经网络训练函数。通过经验实测值与改进算法的BP神经网络预测值对比,验证了所确定的机器人折弯的改进BP神经网络能够更加精准确定折弯工艺过程中所需的滑块行程,提高了折弯工艺精度。 相似文献
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从理论上论述了本机器人视觉伺服系统的结构,包括总体的控制方案,基于图像的控制方法的理论推导,BP神经网络在机器人视觉伺服中的引入以及如何进行合理的神经网络训练,用神经网络建立"视觉图像-运动信号"(visual-motor)关系. 相似文献
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使用机器人进行焊接作业是提升工业生产效率的重要手段，合理的工艺参数是保障机器人焊接质量的关键。针对现有焊接工艺参数优化方法易陷入局部最小、训练时间长、拟合精度不高的问题，提出了一种混沌麻雀搜索算法优化双权值神经网络的新算法。该方法利用混沌麻雀搜索算法的全局搜索能力为双权值神经网络的方向权值、核心权值、幅值选取最优参数。提出了基于新算法的焊接工艺参数优化方法，建立焊接工艺参数与焊接质量之间的映射模型，获取最优焊接参数。分别采用模拟数据与实测激光焊接实验数据对所提方法进行测试，结果表明，混沌麻雀搜索算法优化的双权值神经网络迭代速度快、拟合精度高，较传统的双权值神经网络和径向基神经网络性能更优，适用于工业生产中焊接机器人工艺参数的高效设定。 相似文献
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彭金华 《江西电力职业技术学院学报》2006,19(2):41-42,62
提出了一种采用稀疏RAM的N-tuple神经网络(SN-tuple)的方法,用在足球机器人比赛时,根据图像快速识别队员。通过大量实验证明,该方法有效地解决了传统BP神经网络收敛速度慢、易陷入局部最小值的问题,对机器人队员和足球位置的识别稳定可靠。 相似文献
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针对油气管道专用检测机器人运动控制系统进行研究。在深入分析管道内机器人运动特性的基础上,利用基于模糊控制与神经网络控制的环境自学习网络方法对环境信息进行学习判断。利用模糊神经网络方法对管道机器人的运行轨迹进行自学习跟随,同时解决了管道机器人障碍物识别与规避的问题。仿真结果表明,该方法能够实现管道机器人的环境识别、路径跟随与障碍物识别等功能,符合管道检测的实用要求,具有较高的实际应用价值。 相似文献
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周景雷 《绵阳师范学院学报》2011,30(5):88-91
考虑机器人建模误差不确定性,首先利用反馈控制技术,把基于拉个朗日方程的多关节机器人动力学模型转化成一线性状态方程。然后基于此状态方程,运用线性参数神经网络设计出鲁棒神经网络控制器,并且用李雅普诺夫函数思想证明了这种控制器能够使得机器人系统满足指数收敛的特性。 相似文献
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近几年，许多中小学都开始利用机器人教育来促进信息技术教育及培养学生动手能力。机器人教育将给信息技术教育带来新的活力，机器人也将会成为青少年能力、素质培养的智能平台。本文通过中知网，查阅并分析“机器人教育”相关文章，回顾了中小学机器人教育发展历程，分析了发展趋势，以助我们发现问题．把握方向。 相似文献
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Yi Yu Shao-min Zhang Huai-jian Zhang Xiao-chun Liu Qiao-sheng Zhang Xiao-xiang Zheng Jian-hua Dai 《Journal of Zhejiang University. Science. B》2010,11(4):298-306
Brain-machine interface (BMI) has been developed due to its possibility to cure severe body paralysis. This technology has been used to realize the direct control of prosthetic devices,such as robot arms,computer cursors,and paralyzed muscles. A variety of neural decoding algorithms have been designed to explore relationships between neural activities and movements of the limbs. In this paper,two novel neural decoding methods based on probabilistic neural network (PNN) in rats were introduced,the PNN decode... 相似文献
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Artificial neural networks (ANNs) have been widely used to solve a number of problems to which analytical solutions are difficult to obtain using traditional mathematical approaches. Such problems exist also in the analysis of industrial robots. This paper presents an overview of ANN applications to robot kinematics, dynamics, control, trajectory and path planning, and sensing. Reasons for using or not using ANNs to industrial robots are explained as well. 相似文献
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A closed-chain robot has several advantages over an open-chain robot, such as high mechanical rigidity, high payload, high precision. Accurate trajectory control of a robot is essential in practical use. This paper presents an adaptive proportional integral differential (PID) control algorithm based on radial basis function (RBF) neural network for trajectory tracking of a two-degree-of-freedom (2-DOF) closed-chain robot. In this scheme, an RBF neural network is used to approximate the unknown nonlinear dynamics of the robot, at the same time, the PID parameters can be adjusted online and the high precision can be obtained. Simulation results show that the control algorithm accurately tracks a 2-DOF closed-chain robot trajectories. The results also indicate that the system robustness and tracking performance are superior to the classic PID method. 相似文献
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非确定环境下移动机器人多传感器系统及信息处理 总被引：3，自引：0，他引：3
PBJ- 01是一类移动机器人, 它的6个轮子和2个摆臂能够帮助机器人适应多种地形. 机器人上装有一个复杂的传感器系统, 包括超声波传感器、触觉传感器、视觉传感器等. PBJ-01采用基于行为的控制体系机构, 其关键部分是基于模糊神经网络的障碍识别系统. 仿真证明该系统能够从传感器的感知数据而识别出障碍类型, 从而帮助机器人在越障行为和避障行为之间进行抉择. 相似文献
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Based on the operation data from a certain wastewater treatment plant(WWTP) in northeast China,the models of back propagation neural network ( BP NN ) and radial basis function neural network ( RBF NN ) have been designed respectively and the ability of convergence and generalization has been analyzed separately.As for BP NN, the effects of numbers of layers and nodes have been studied ; as for RBF NN, the influences of the number of nodes and the RBF‘s width have been studied. It is concluded that BP NN has converged much slowly in comparison with RBF NN. The conclusion that the RBF NN is suitable for modeling activated sludge system has been drawn. An automatically optimum design program for RBF NN has been developed, through which the RBF NN model of traditional activated sludge system has been established. 相似文献
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新型神经网络的发展及其应用 总被引：2，自引：0，他引：2
人工神经网络是指模拟人脑神经系统的结构和功能,运用大量的处理部件,由人工方式建立起来的网络系统。近几年来,人工神经网络的研究工作十分活跃,取得了很大的进展,研究开发出了几十种神经网络的模型,出现了多种新型神经网络结构。本文重点介绍了近年来几种新型神经网络的基本模型及典型应用,包括小波神经网络、模糊神经网络、进化神经网络、细胞神经网络、混沌神经网络,同时比较了这几种新型神经网络的优势和不足。最后,根据这几种新型神经网络的特点,展望了它们今后的发展前景。 相似文献
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A Method for Reducing Noise Radiated from Structures with Vibration Absorbers by Using an Accelerated Neural Network 总被引：2，自引：0，他引：2
A method for reducing noise radiated from structures by vibration absorbers is presented. Since usual design method for the absorbers is invalid for noise reduction, the peaks of noise power in the frequency domain as cost functions are applied. Hence, the equations for obtaining optimal parameters of the absorbers become nonlinear expressions. To have the parameters, an accelerated neural network procedure has been presented.Numerical calculations have been carried out for a plate-type cantilever beam with a large width, and experimental tests have been also performed for the same beam. It is clarified that the present method is valid for reducing noise radiated from structures. As for the usual design method for the absorbers, model analysis has been given, so the number of absorbers should be the same as that of the considered modes. While the nonlinear problem can be dealt with by the present method, there is no restriction on the number of absorbers or the model number. 相似文献
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曹鸿霞 《湖北广播电视大学学报》2006,23(6):174-176
神经网络(neuralnetwork)是近年来再度兴起的一个高科技研究领域,数字识别就是其中一项既基本又非常重要的应用性研究领域。BP神经网络(Back-Propagation),又称误差反向传递神经网络,是一种依靠反馈值来不断调整节点之间的连接权值而构建的一种网络模型。BP网络可以看作是对多层感知器网络的扩展,即信息的正向传播及误差数据的反向传递。本文给出了设计用于识别手写数字BP神经网络的过程。 相似文献