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We have designed a mobile robot with a distribution structure for intelligent life space. The mobile robot was constructed
using an aluminum frame. The mobile robot has the shape of a cylinder, and its diameter, height, and weight are 40 cm, 80
cm, and 40 kg, respectively. There are six systems in the mobile robot, including structure, an obstacle avoidance and driving
system, a software development system, a detection module system, a remote supervision system, and others. In the obstacle
avoidance and driving system, we use an NI motion control card to drive two DC servomotors in the mobile robot, and detect
obstacles using a laser range finder and a laser positioning system. Finally, we control the mobile robot using an NI motion
control card and a MAXON driver according to the programmed trajectory. The mobile robot can avoid obstacles using the laser
range finder, and follow the programmed trajectory. We developed the user interface with four functions for the mobile robot.
In the security system, we designed module-based security devices to detect dangerous events and transmit the detection results
to the mobile robot using a wireless RF interface. The mobile robot can move to the event position using the laser positioning
system. 相似文献
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移动机器人导航空间表示及SLAM问题研究 总被引:1,自引:0,他引:1
导航研究是移动机器人研究的承要领域之一。 空间表示则是移动机器人导航研究的基础性问题。围绕移动机器人导航空间表示,该文首先对目前广泛采用的空间分解表示,几何特征表示,拓扑地图表示等多种移动机器人导航空间表示方法进行详细的归纳和总结。通过对移动机器人导航空间各种表示疗法进行性能对比,指出各种空间表示方法的优点与不足。最后,对移动机器人导航研究中的同时定位与地图创建(SLAM)问题作了阐述,指出SLAM研究面临的问题,探讨了SLAM的未来研究方向。 相似文献
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移动机器人路径规划技术的现状与发展 总被引:8,自引:0,他引:8
移动机器人技术是近年来的研究热点,路径规划技术是移动机器人技术研究中的一个重要领域。路径规划分为基于模型的环境已知的全局路径规划和基于传感器的环境未知的局部路径规划。该文详细地叙述了移动机器人路径规划技术的分类和发展现状,全局路径规划和局部路径规划中的各种方法,具体地分析了各种方法的算法过程,并指出了各种方法的优缺点,以及各种方法的改进的办法,最后对移动机器人路径规划技术的未来的发展趋势进行了展望。 相似文献
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针对现有的移动机器人视觉系统计算资源消耗大、实时性能欠佳、检测范围受限等问题,提出一种基于主动式全景视觉传感器(AODVS)的移动机器人障碍物检测方法。首先,将单视点的全方位视觉传感器(ODVS)和由配置在1个平面上的4个红色线激光组合而成的面激光发生器进行集成,通过主动全景视觉对移动机器人周边障碍物进行检测;其次,移动机器人中的全景智能感知模块根据面激光发生器投射到周边障碍物上的激光信息,通过视觉处理方法解析出移动机器人周边障碍物的距离和方位等信息;最后,基于上述信息采用一种全方位避障策略,实现移动机器人的快速避障。实验结果表明,基于AODVS的障碍物检测方法能在实现快速高效避障的同时,降低对移动机器人的计算资源的要求。 相似文献
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室内自主式移动机器人定位方法 总被引:3,自引:0,他引:3
定位是确定机器人在其工作环境中所处位置的过程.应用各种传感器感知信息实现可靠的定位是自主式移动机器人最基本、也是最重要的一项功能之一.本文对室内自主式移动机器人的定位技术进行了综述,介绍了当前自主式移动机器人定位方法的研究现状.同时,对国内外具有典型性的研究方法进行了较洋细的介绍,并重点提出了几种室内自主式移动机器人通用的定位方法,对其中的地图构造、位姿估计方法进行了详细介绍.最后,论述了自主式移动机器人定位系统与地图构造中所面临的主要问题及其解决方法并指出了该领域今后的研究方向. 相似文献
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《Robotics and Autonomous Systems》2006,54(1):23-33
A variety of approaches for path tracking control of wheeled mobile robots have been implemented. While most of these are based on controlling the robot dynamics, they are not applicable if the robot dynamics are inaccessible. In this paper, a fuzzy logic controller (FLC) for the path tracking of a wheeled mobile robot based on controlling the robot at a higher level is presented. The controller is highly robust and flexible and automatically follows a sequence of discrete waypoints, and no interpolation of the waypoints is needed to generate a continuous reference trajectory. The speeds are varied depending on the variations in the path and on the posture of the robot. The heuristic rules of the FLC are based on an analogy with a human driving a car and the optimization of the controller is based on experimentation. The implementation on a P3-AT mobile robot shows the effectiveness of the proposed approach. 相似文献
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In the recent past, mobile robots with high mobility have been developed actively. We have already proposed a holonomic and omnidirectional mobile robot using two active dual-wheel caster assemblies and also derived the kinematic models for the assembly and the mobile robot. This paper presents dynamic analysis and control for the mobile robot. The dynamic model has been derived based on the forces acting on the steering axis. Then a model-based resolved acceleration controller is constructed. The validity of the model and the effectiveness of the control system are confirmed by experiments using a prototype robot as well as simulations. 相似文献
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《Advanced Robotics》2013,27(9):925-950
Considering that intelligent robotic systems work in a real environment, it is important that they themselves have the ability to determine their own internal conditions. Therefore, we consider it necessary to pay some attention to the diagnosis of such intelligent systems and to construct a system for the self-diagnosis of an autonomous mobile robot. Autonomous mobile systems must have a self-contained diagnostic system and therefore there are restrictions to building such a system on a mobile robot. In this paper, we describe an internal state sensory system and a method for diagnosing conditions in an autonomous mobile robot. The prototype of our internal sensory system consists of voltage sensors, current sensors and encoders. We show experimental results of the diagnosis using an omnidirectional mobile robot and the developed system. Also, we propose a method that is able to cope with the internal condition using internal sensory information. We focus on the functional units in a single robot system and also examine a method in which the faulty condition is categorized into three levels. The measures taken to cope with the faulty condition are set for each level to enable the robot to continue to execute the task. We show experimental results using an omnidirectional mobile robot with a self-diagnosis system and our proposed method. 相似文献
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一种移动机器人超声波导航系统 总被引:13,自引:0,他引:13
本文设计了一种用于移动机器人的超声波导航系统,介绍了系统的工作原理及结构,
并进行了样车实验.实际的导航实验表明:系统可用于室内结构环境中的移动机器人导航. 相似文献
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路径规划算法是实现移动机器人自主导航的关键技术。针对移动机器人路径规划技术进行研究,分析各算法的实现机制与原理,并系统性的总结了主流路径规划算法研究现状。根据移动机器人路径规划算法的特点,将路径规划算法分为:传统规划算法、智能规划算法、基于采样的规划算法。基于以上分类,分述近年来的主要研究成果,重点分析各类算法的优缺点。针对移动机器人路径规划算法研究现状,对其未来研究方向进行展望,为移动机器人路径规划大发展提供一定的思路。 相似文献
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《Control Engineering Practice》1999,7(6):729-740
This paper shows how to improve the robustness of mobile robot path tracking when predictive control algorithms are used. When uncertainties in a mobile robot are considered, it is shown how the classical generalised predictive controller (GPC) may lead to an unstable behaviour of the mobile robot. The equivalence between the GPC and a structure composed by an optimal predictor and a classical controller is given, and it is shown that use of a Smith predictor instead of an optimal predictor increases the robustness of the system. A new strategy, the Smith-predictor-based GPC, is proposed. Experimental tests carried out on a LABMATE mobile robot validate the performance of the proposed controller. 相似文献
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Tetsushi Kamegawa Taichi Akiyama Satoshi Sakai Kento Fujii Kazushi Une Eitou Ou 《Advanced Robotics》2020,34(2):132-139
AbstractIn this study, we propose a new robot system consisting of a mobile robot and a snake robot. The system works not only as a mobile manipulator but also as a multi-agent system by using the snake robot's ability to separate from the mobile robot. Initially, the snake robot is mounted on the mobile robot in the carrying mode. When an operator uses the snake robot as a manipulator, the robot changes to the manipulator mode. The operator can detach the snake robot from the mobile robot and command the snake robot to conduct lateral rolling motions. In this paper, we present the details of our robot and its performance in the World Robot Summit. 相似文献
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稀疏无线传感器网络中各传感器节点距离较远,而传统的静态数据收集方法要求各传感器节点直接通信,导致网络延迟时间长,能耗高。针对该问题,提出一种基于移动机器人的无线传感器数据收集方法。该方法首先由静态节点选择与路径最短的移动机器人作为簇头,移动机器人比较一定周期内检测到的邻居节点的平均剩余能量与整个网络传感器节点平均剩余能量,根据比较结果决定其是否移动,若移动则采用范围可控的随机移动策略;当移动机器人移动到新位置时,传感器节点更新路由,选择新的移动机器人作为簇头。仿真结果表明,与传统的静态无线传感器网络数据收集方法相比,基于移动机器人的无线传感器网络数据收集方法大大降低了数据传输延迟和节点能量消耗。 相似文献
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The purpose of this paper is to propose a hybrid trigonometric compound function neural network (NN) to improve the NN-based tracking control performance of a nonholonomic mobile robot with nonlinear disturbances. In the mobile robot control system, two NN controllers embedded in the closed-loop control system have the simple continuous learning and rapid convergence capability without the dynamics information of the mobile robot to realize the tracking control of the mobile robot. The neuron functions of the hidden layer in the three-layer feedforward network structure consist of the compound cosine function and the compound sine function combining a cosine or a sine function with a unipolar sigmoid function. The main advantages of this NN-based mobile robot control system are better real-time control capability and control accuracy by use of the proposed NN controllers for a nonholonomic mobile robot with nonlinear disturbances. Through simulation experiments applied to the nonholonomic mobile robot with the nonlinear disturbances of dynamics uncertainty and external disturbances, the simulation results show that the proposed NN control system of a nonholonomic mobile robot has better real-time control capability and control accuracy than the compound cosine function NN control system of a nonholonomic mobile robot and then verify the effectiveness of the proposed hybrid trigonometric compound function NN controller for improving the tracking control performance of a nonholonomic mobile robot with nonlinear disturbances. 相似文献
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This paper presents the robust velocity estimation of an omnidirectional mobile robot using a regular polygonal array of optical mice that are installed at the bottom of a mobile robot. First, the velocity kinematics from a mobile robot to an array of optical mice is derived, from which the least squares estimation of the mobile robot velocity is obtained as the simple average of the optical mouse velocity readings. Second, it is shown that a redundant number of optical mice contributes to the robustness of the least squares mobile robot velocity estimation against both measurement noises and partial malfunction of optical mice. Third, the sensitivity analysis of the least squares mobile robot velocity estimation to imprecise installation of optical mice is made, from which a practical method of optical mouse position calibration is devised. Finally, some experimental results using commercial optical mice are given to demonstrate the validity and performance of the proposed mobile robot velocity estimation. Copyright © 2011 John Wiley and Sons Asia Pte Ltd and Chinese Automatic Control Society 相似文献