共查询到19条相似文献,搜索用时 93 毫秒
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机器人视觉伺服系统的研究是机器人领域中的重要内容之一,其研究成果可以直接用于机器人自动避障、轨迹线跟踪和运动目标跟踪等问题中。本文针对机器人视觉伺服系统要求快速准确的特点,设计了基于TMS320C6201的机器人视觉图像处理系统,并分析了基于图像雅可比矩阵的机器人视觉伺服方法的基本原理。 相似文献
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机器人运动关节的伺服系统是机器人控制系统的基础,伺服系统的好坏决定了机器人整体性能的优劣。基于5自由度排爆机器人,使用Simulink设计出运动关节的伺服系统框图,并通过xPC目标系统生成可运行于PC104的实时控制系统。该系统采用先进PID控制器,具有专家特性。运行结果表明,该方案取得了良好的效果,机器人关节运动平稳且无静态误差,系统具有很好的鲁棒性和实时性。该伺服系统不但可用于机器人运动关节的伺服控制,还可以应用于数控机床等位置控制系统。 相似文献
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本文将模糊PID控制应用到机器人视觉伺服控制系统中,用以克服机器人视觉伺服系统的强耦合何非线性因素得影响。以二自由度机器人视觉伺服系统为例,仿真实现了其对直线运动和圆周运动轨迹跟踪,结果验证了控制器的效果。 相似文献
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本文介绍了直接驱动机器人(Direct Drive Robot)及其有关领域的技术状况和发展动向。其中包括 DD 机器人的特殊问题,DD 机器人本体结构,DD 机器人伺服系统,DD 机器人的控制策略等。 相似文献
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王杰高 《机器人技术与应用》2013,(2):21-22
南京埃斯顿自动化股份有限公司长期从事数控系统、交流伺服系统、电液伺服系统等自动化产品的研发、生产、销售、服务,年产交流伺服系统数万套,数控系统超过1万套.每年为1万套以上的各类机床生产配套运动控制系统和辅助设备,是国内伺服和控制产品的领军企业。公司于多年前就开始思考工业机器人产业发展战略,着手开始机器人相关的技术储备,例如,开发机器人专用伺服驱动器和电机,机器人控制系统技术和高速实时以太网总线技术。2010年获得国家科技部863计划专项经费对机器人专用伺服驱动器和电机开发的支持,使得机器人核心部件和技术的开发进一步加快。 相似文献
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复杂的作业环境和艰巨的作业任务使液压驱动型四足机器人对其伺服系统的精度、速度和力量均比一般机器人在普通情况下有更高的要求。为掌握液压驱动型四足机器人在多种路况下行走时各液压缸的受力情况以及液压系统内流量、压力的变化情况,需要对其虚拟样机进行机械动力系统和液压伺服系统的联合仿真,定性分析电液伺服系统位置、速度等被控对象的特性,并分析PID控制器在四足机器人伺服控制方面的特性与不足。针对传统控制算法在四足机器人控制存在的短板问题,设计了一种非对称前馈补偿模糊自适应PID算法,并利用物理样机进行了实际验证。实验结果为四足机器人电液伺服控制系统硬件、软件和控制算法的设计与优化指明了方向,还为研究四足机器人平稳步态控制策略提供了决策依据和数据支持。 相似文献
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This paper proposes a new visual servoing quasi-min-max MPC algorithm for stabilization control of an omnidirectional wheeled mobile robot subject to physical and visual constraints. The visual servoing dynamics of the robot are modeled as the state-dependent linear error system with nonlinear control inputs of rotation and deflection velocities of wheels. The state-dependent linear error system is covered as linear parameters-varying models which is used to design the visual servoing quasi-min-max MPC controller. The actual control inputs of the robot are then computed by the solution of an inverse algebraic equation of the MPC actions. The recursive feasibility and stability of the new visual servoing MPC are ensured by some LMIs conditions. The performance and practicability of the visual servoing MPC are verified by some simulation and experiment results. 相似文献
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考虑具有可见性约束和执行器约束的载荷不确定移动机器人视觉伺服系统,提出一种鲁棒视觉伺服预测控制策略.首先将该移动机器人视觉伺服系统建模为关于视觉伺服误差和驱动的不确定系统.其次,对约束的视觉伺服误差子系统,设计基于半正定规划的速度规划预测控制算法.该算法分为离线计算和在线调度两个部分,降低预测控制算法的在线计算量.而对约束的视觉伺服驱动子系统,采用极小极大鲁棒预测控制算法,实现对视觉伺服误差子系统的规划速度的渐近跟踪.进一步,建立了载荷不确定移动机器人视觉伺服误差和驱动系统的鲁棒渐近稳定性结果.最后,对比仿真结果验证了本文策略的有效性和优越性. 相似文献
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We present a new approach to visual feedback control using image-based visual servoing with stereo vision. In order to control
the position and orientation of a robot with respect to an object, a new technique is proposed using binocular stereo vision.
The stereo vision enables us to calculate an exact image Jacobian not only at around a desired location, but also at other
locations. The suggested technique can guide a robot manipulator to the desired location without needing such a priori knowledge
as the relative distance to the desired location or a model of the object, even if the initial positioning error is large.
We describes a model of stereo vision and how to generate feedback commands. The performance of the proposed visual servoing
system is illustrated by a simulation and by experimental results, and compared with the conventional method for an assembling
robot.
This work was presented in part at the Fourth International Symposium on Artificial Life and Robotics, Oita, Japan, January
19–22, 1999 相似文献
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Yimin Zhao Wen-Fang Xie Sining Liu 《International Journal of Control, Automation and Systems》2013,11(3):586-596
This paper addresses the challenges of choosing proper image features for planar symmetric shape objects and designing visual servoing controller to enhance the tracking performance in image-based visual servoing (IBVS). Six image moments are chosen as the image features and the analytical image interaction matrix related to the image features are derived. A controller is designed to efficiently increase the robustness of the visual servoing system. Experimental results on a 6-DOF robot visual servoing system are provided to illustrate the effectiveness of the proposed method. 相似文献
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M.T. Hussein 《Advanced Robotics》2013,27(24):1575-1585
In this review, recent developments in the field of flexible robot arm control using visual servoing are reviewed. In comparison to rigid robots, the end-effector position of flexible links cannot be obtained precisely enough with respect to position control using kinematic information and joint variables. To solve the task here the use of a vision sensor (camera) system, visual servoing is proposed to realize the task of control flexible manipulators with improved quality requirements. The paper is organized as follows: the visual servoing architectures will be reviewed for rigid robots first. The advantages, disadvantages, and comparisons between different approaches of visual servoing are carried out. The using of visual servoing to control flexible robot is addressed next. Open problems such as state variables estimation as well as the combination of different sensor properties as well as some application-oriented points related to flexible robot are discussed in detail. 相似文献