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Design and Modeling of 9 Degrees of Freedom Redundant Robotic Manipulator 九自由度冗余度机械臂的设计与建模
Pub Date : 2022-12-30 DOI: 10.18196/jrc.v3i6.15958
Zuha Anjum, S. Samo, A. Nighat, Akhtar Un Nisa, Muhammad Ali Soomro, Reza Alayi
In disaster areas, robot manipulators are used to rescue and clearance of sites. Because of the damaged area, they encounter disturbances like obstacles, and limited workspace to explore the area and to achieve the location of the victims. Increasing the degrees of freedom is required to boost the adaptability of manipulators to avoid disturbances, and to obtain the fast desired position and precise movements of the end-effector. These robot manipulators offer a reliable way to handle the barrier challenges since they can search in places that humans can't reach. In this research paper, the 9-DOF robotic manipulator is designed, and an analytical model is developed to examine the system’s behavior in different scenarios. The kinematic and dynamic representation of the proposed model is analyzed to obtain the translation or rotation, and joint torques to achieve the expected position, velocity, and acceleration respectively. The number of degrees may be raised to avoid disturbances, and to obtain the fast desired position and precise movements of the end-effector. The simulation of developed models is performed to ensure the adaptable movement of the manipulators working in distinct configurations and controlling their motion thoroughly and effectively. In the proposed configuration the joints can easily be moved to achieve the desired position of the end-effector and the results are satisfactory. The simulation results show that the redundant manipulator achieves the victim location with various configurations of the manipulator. Results reveal the effectiveness and efficacy of the proposed system.
在灾区,机器人机械手被用于救援和现场清理。由于受损区域,他们会遇到障碍物等干扰,并且有限的工作空间来探索该区域并实现受害者的位置。增加自由度可以提高机械手的自适应能力以避免干扰,并获得末端执行器的快速期望位置和精确运动。这些机器人操纵者提供了一种可靠的方法来处理障碍挑战,因为它们可以在人类无法到达的地方进行搜索。本文对九自由度机械臂进行了设计,并建立了分析模型来考察系统在不同场景下的行为。分析了该模型的运动学和动力学表示,分别获得平移或旋转,以及关节力矩,以实现预期的位置、速度和加速度。可以提高度的数目,以避免干扰,并获得所需的快速位置和末端执行器的精确运动。对所建立的模型进行仿真,以保证机械手在不同构型下的自适应运动,并对其运动进行彻底有效的控制。在所提出的结构中,关节可以很容易地移动以达到末端执行器的期望位置,并且结果令人满意。仿真结果表明,冗余机械手在不同构型下均能实现对受害者的定位。结果表明了该系统的有效性和有效性。
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引用次数: 0
Fleet Management System for an Industry Environment 工业环境下的车队管理系统
Pub Date : 2022-12-23 DOI: 10.18196/jrc.v3i6.16298
Jakub Hažík, Martin Dekan, Peter Beno, F. Duchoň
The article deals with the management of a fleet of AMR robots that perform logistics in production. The entire system design is implemented in the ROS environment - state of the art for the development in robotics. Four already available solutions for fleet management in ROSe are analyzed in detail in the article. These solutions fail when there is a need to change the route plan in a dynamically changing environment. Likewise, some did not sufficiently synchronize the movement of the robots and collisions occurred or, with a larger number of robots, represented an enormous computational load. Our solution was designed to be as simple and reliable as possible for industrial use. It is based on a combination of semi-autonomous and centralized approach. A hybrid map is used for planning the movement of the robot fleet, which provides the advantages of both a metric and a topological map. This route map for a fleet of robots can be easily drawn in readily available CAD software. Synchronization of robots was designed on the principle of semaphore or mutex, which enabled the use of bidirectional paths. The results are verified in simulations and were aimed at verifying the proposed robot synchronization. It was confirmed that the proposed synchronization slows down the robots, but there were no collision situations. By separating route planning from synchronization, we simplified the entire fleet management process and thus created a very efficient system for network and hardware resources. In addition, the system is easily expandable.
本文讨论了在生产中执行物流的AMR机器人车队的管理。整个系统设计是在ROS环境中实现的,这是机器人技术发展的最新技术。本文详细分析了ROSe中已有的四种车队管理解决方案。当需要在动态变化的环境中更改路由计划时,这些解决方案将失败。同样,有些机器人的运动没有充分同步,发生了碰撞,或者在机器人数量较多的情况下,代表了巨大的计算负荷。我们的解决方案设计得尽可能简单可靠,适用于工业用途。它是基于半自治和集中式方法的结合。混合地图具有度量地图和拓扑地图的优点,可用于规划机器人车队的运动。这个机器人车队的路线图可以很容易地在现成的CAD软件中绘制。基于信号量或互斥锁的原理设计了机器人的同步,实现了双向路径的使用。仿真结果验证了所提出的机器人同步方法。实验证实,提议的同步减缓了机器人的速度,但没有发生碰撞情况。通过将路线规划与同步分离,我们简化了整个车队管理流程,从而创建了一个非常高效的网络和硬件资源系统。此外,该系统易于扩展。
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引用次数: 0
Fuzzy Logic Control and PID Controller for Brushless Permanent Magnetic Direct Current Motor: A Comparative Study 无刷永磁直流电动机模糊控制与PID控制的比较研究
Pub Date : 2022-12-15 DOI: 10.18196/jrc.v3i6.15974
A. Shuraiji, S. W. Shneen
Electrical machines based on permanent magnet material excitations have been applied in many sectors since they are distinguished by their high torque-to-size ratio and offer high efficiency. Brushless permanent magnetic direct current (BLPMDC) motors are one type of these machines. They are preferable over conventional DC motors. one of the main challengings of the BLPMDC motor drives is the inherited feature of nonlinearity. Therefore, a conventional PID controller would not be an efficient choice for the speed control of such motors. The object of this paper is to design an efficient speed control for the BLPMDC motor. The proposed controller is based on the Fuzzy logic technique. MATLAB/ Simulink has been employed to design and test the drive system. Simulations were carried out for three cases, the first without a controller, the other using conventional control, and the third using expert systems. The results proved the possibility of improving the engine's working performance using the control systems. They also proved that the adoption of expert systems is better than the traditional nonlinear systems. The simulation response shows that the Rise Time(tr) at PID equals 66.306ms, while it equals 19.530ms for the Fuzzy logic controller. Moreover, Overshoot for PID and Fuzzy logic controller are 6.989% and 1.531%, respectively. On the other hand, undershoot is equal to 1.788% and 11.924% for PID and Fuzzy logic controller, respectively.
基于永磁材料激励的电机因其高转矩尺寸比和高效率而在许多领域得到了应用。无刷永磁直流电动机(BLPMDC)是其中一种类型的机器。它们比传统的直流电机更可取。BLPMDC电机驱动的主要挑战之一是其固有的非线性特性。因此,传统的PID控制器将不是这类电机速度控制的有效选择。本文的目的是为BLPMDC电机设计一种高效的调速系统。该控制器基于模糊逻辑技术。采用MATLAB/ Simulink对驱动系统进行了设计和测试。对三种情况进行了仿真,第一种是不使用控制器,另一种是使用常规控制,第三种是使用专家系统。结果证明了利用该控制系统改善发动机工作性能的可能性。并证明了采用专家系统比采用传统的非线性系统更有效。仿真结果表明,PID的上升时间为66.306ms,模糊控制器的上升时间为19.530ms。PID和模糊控制器的超调量分别为6.989%和1.531%。另一方面,PID和模糊控制器的欠冲率分别为1.788%和11.924%。
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引用次数: 4
A Comparative Study Between Convolution and Optimal Backstepping Controller for Single Arm Pneumatic Artificial Muscles 单臂气动人工肌肉的卷积与最优反步控制器的比较研究
Pub Date : 2022-12-15 DOI: 10.18196/jrc.v3i6.16064
A. S. Ahmed, S. Kadhim
This study was based on the dynamic modeling and parameter characterization of the one-link robot arm driven by pneumatic artificial muscles. This work discusses an up-to-date control design based on the notion of a conventional and optimal backstepping controller for regulating a one-link robot arm with conflicting biceps and triceps positions supplied by pneumatic artificial muscles. The main problems found in systems that utilize pneumatic artificial muscle as actuators are primarily the large uncertainties, non-linearities, and time-varying features that severely impede movement performance in tracking control. In consideration of the uncertainty, high nonlinearity, and external disturbances that can exist during the motion. Lyapunov-based backstepping control technique was utilized to assure the stability of the system with improved dynamic performance. The bat algorithm optimization method is utilized in order to modify the variables used in the design of the controller to enhance the efficiency of the suggested controller. According to the conclusions, a quantitative comparison of the response in the PAM actuated the arm model in the current study and earlier investigations with the Backstepping controlled system revealed fair agreement with a variation of 37.5% from the optimal classical synergetic controller. In addition, computer simulations were utilized in order to compare the effectiveness of the proposed conventional controls and the optimal background. It has been proven that an optimal controller can control the uncertainties and maintain the controlled system’s stability.
对气动人工肌肉驱动的单连杆机械臂进行了动力学建模和参数表征。这项工作讨论了一种最新的控制设计,该设计基于传统和最佳反步控制器的概念,用于调节由气动人造肌肉提供的二头肌和三头肌位置冲突的单连杆机器人手臂。在使用气动人造肌肉作为执行器的系统中发现的主要问题主要是大的不确定性、非线性和时变特征,这些特征严重阻碍了跟踪控制中的运动性能。考虑到运动过程中存在的不确定性、高非线性和外部干扰。采用基于李雅普诺夫的反步控制技术,保证了系统的稳定性,提高了系统的动态性能。采用bat算法优化方法对控制器设计中使用的变量进行修改,以提高所建议控制器的效率。根据这些结论,将当前研究中PAM驱动的手臂模型的响应与之前的研究与Backstepping控制系统进行了定量比较,结果表明,与最优经典协同控制器相比,PAM驱动的手臂模型的响应相差37.5%。此外,利用计算机仿真来比较所提出的常规控制和最优背景的有效性。研究表明,最优控制器能够控制不确定性,保持被控系统的稳定性。
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引用次数: 2
Smart home Management System with Face Recognition Based on ArcFace Model in Deep Convolutional Neural Network 基于ArcFace模型的深度卷积神经网络人脸识别智能家居管理系统
Pub Date : 2022-12-04 DOI: 10.18196/jrc.v3i6.15978
T. Dang
In recent years, artificial intelligence has proved its potential in many fields, especially in computer vision. Facial recognition is one of the most essential tasks in the field of computer vision with various prospective applications from academic research to intelligence service. In this paper, we propose an efficient deep learning approach to facial recognition. Our approach utilizes the architecture of ArcFace model based on the backbone MobileNet V2, in deep convolutional neural network (DCNN). Assistive techniques to increase highly distinguishing features in facial recognition. With the supports of the facial authentication combines with hand gestures recognition, users will be able to monitor and control his home through his mobile phone/tablet/PC. Moreover, they communicate with data and connect to smart devices easily through IoT technology. The overall proposed model is 97% of accuracy and a processing speed of 25 FPS. The interface of the smart home demonstrates the successful functions of real-time operations.
近年来,人工智能已经在许多领域证明了它的潜力,特别是在计算机视觉方面。人脸识别是计算机视觉领域最重要的任务之一,从学术研究到情报服务都有广泛的应用前景。在本文中,我们提出了一种高效的深度学习人脸识别方法。我们的方法在深度卷积神经网络(DCNN)中利用基于骨干MobileNet V2的ArcFace模型架构。在面部识别中增加高度显著特征的辅助技术。在面部认证与手势识别相结合的支持下,用户可以通过手机/平板电脑/PC对自己的家进行监控。此外,它们还可以通过物联网技术轻松地与数据通信并连接到智能设备。该模型的总体精度为97%,处理速度为每秒25帧。智能家居界面展示了实时操作的成功功能。
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引用次数: 6
Control of Flexible Manipulator Robots Based on Dynamic Confined Space of Velocities: Dynamic Programming Approach 基于动态速度受限空间的柔性机械臂控制:动态规划方法
Pub Date : 2022-12-04 DOI: 10.18196/jrc.v3i6.16454
C. P. Peña Fernández
Linear Parameter Varying models-based Model Predictive Control (LPV-MPC) has stood out in manipulator robots because it presents well-rejection to dynamic uncertainties in flexible joints. However, it has become too weak when the MPC's optimization problem does not include kinematic constraints-based conditions. This paper uses dynamic confined space of velocities (DCSV) to include these conditions as a recursive polytopic constraint, guaranteeing optimal dependency on a simplex scheduling parameter. To this end, the local frame's velocities and torque/force preload of joints (related to violation of kinematic constraints) are associated with different time scale dynamics such that DCSV correlates them as a polytope. So, a classical LPV-MPC will be updated using a dynamic programming approach according to the DCSV-based polytope. As a result, one lemma about DCSV-based recursive polytope and a five-step procedure for two decoupled close-loop schemes with different time scales compose the LPV-MPC proposed method. Numerical validation shows that even for relevant flexibility situations, trajectory tracking performance is improved by tuning finite horizons and optimization problem constraints regarding DCSV's behavior.
基于线性参数变化模型的模型预测控制(LPV-MPC)因其对柔性关节的动态不确定性具有良好的抑制能力而在机械臂机器人中脱颖而出。然而,当MPC的优化问题不包含基于运动约束的条件时,它就变得太弱了。本文利用动态速度受限空间(DCSV)将这些条件作为递归多边形约束,保证了对单纯形调度参数的最优依赖。为此,局部框架的速度和关节的扭矩/力预载荷(与运动学约束的违反有关)与不同的时间尺度动力学相关联,以便dccsv将它们关联为多面体。因此,经典的LPV-MPC将根据基于dcsv的多面体使用动态规划方法进行更新。结果表明,LPV-MPC方法由一个基于dcsv的递归多面体引理和两种不同时间尺度的解耦闭环方案的五步法组成。数值验证表明,即使在相关的柔性情况下,通过调整有限视界和优化DCSV行为的问题约束,也可以提高轨迹跟踪性能。
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引用次数: 3
Neural Network-based Finite-time Control of Nonlinear Systems with Unknown Dead-zones: Application to Quadrotors 基于神经网络的未知死区非线性系统有限时间控制:在四旋翼飞行器上的应用
Pub Date : 2022-12-02 DOI: 10.18196/jrc.v3i6.15355
Muhammad Maaruf, Aminu Babangida, H. Almusawi, Peter Szemes Tamas
Over the years, researchers have addressed several control problems of various classes of nonlinear systems. This article considers a class of uncertain strict feedback nonlinear system with unknown external disturbances and asymmetric input dead-zone. Designing a tracking controller for such system is very complex and challenging. This article aims to design a finite-time adaptive neural network backstepping tracking control for the nonlinear system under consideration. In addition,  all unknown disturbances and nonlinear functions are lumped together and approximated by radial basis function neural network (RBFNN). Moreover, no prior  information about the boundedness of the dead-zone parameters is required in the controller design. With the aid of a Lyapunov candidate function, it has been shown that the tracking errors converge near the origin in finite-time. Simulation results testify that the proposed control approach can force the output to follow the reference trajectory in a short time despite the presence of  asymmetric input dead-zone and external disturbances. At last, in order to highlight the effectiveness of the proposed control method, it is applied to a quadrotor unmanned aerial vehicle (UAV).
多年来,研究人员研究了各种非线性系统的控制问题。考虑一类具有未知外部干扰和非对称输入死区的不确定严格反馈非线性系统。为这种系统设计跟踪控制器是非常复杂和具有挑战性的。针对非线性系统,设计了一种有限时间自适应神经网络反步跟踪控制。此外,将所有的未知扰动和非线性函数集中在一起,用径向基函数神经网络(RBFNN)进行逼近。此外,在控制器设计中不需要关于死区参数有界性的先验信息。利用Lyapunov候选函数,证明了跟踪误差在有限时间内收敛于原点附近。仿真结果表明,在存在非对称输入死区和外部干扰的情况下,该控制方法能使输出在短时间内跟随参考轨迹。最后,为了突出所提出的控制方法的有效性,将其应用于四旋翼无人机。
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引用次数: 1
Adaptive Controller with PID, FOPID, and NPID Compensators for Tracking Control of Electric – Wind Vehicle 基于PID、FOPID和NPID补偿器的风电跟踪控制自适应控制器
Pub Date : 2022-09-01 DOI: 10.18196/jrc.v3i5.15855
Mohamed A. Shamseldin
This paper presents a new combination between the Model Reference Adaptive Control (MRAC) with several types of PID’s controllers (PID, Fractional order PID (FOPID), and Nonlinear PID (NPID)) optimized using a new Covid-19 algorithm. The proposed control techniques had been applied on a new model for an electric-wind vehicle, which can catch the wind that blows in the opposite direction of a moving vehicle to receive wind; a wind turbine is installed on the vehicle’s front. The generator converts wind energy into electricity and stores it into a backup battery to switch it when the primary battery is empty. The simulation results prove that the new model of electric–wind vehicles will save power and allow the vehicle to continue moving while the other battery charges. In addition, a comparative study between different types of control algorithms had been developed and investigated to improve the vehicle dynamic response. The comparison shows that the MRAC with the NPID compensator can absorb the nonlinearity (air resistance and wheel friction) where it has a minimum overshoot, rise time, and settling time (35 seconds) among other control techniques compensators (PID and FOPID). 
本文提出了模型参考自适应控制(MRAC)与几种类型的PID控制器(PID,分数阶PID (FOPID)和非线性PID (NPID)之间的新组合,这些控制器使用新的Covid-19算法进行优化。将所提出的控制技术应用于一种新型电动风车辆模型,该模型可以捕捉与行驶车辆相反方向的风来接收风;风力涡轮机安装在车辆的前部。发电机将风能转化为电能,并将其储存在备用电池中,以便在主电池用完时进行切换。仿真结果表明,新模型的电动-风力汽车在其他电池充电的情况下,可以节省电力并使车辆继续行驶。此外,还对不同类型的控制算法进行了对比研究,以改善车辆的动态响应。对比表明,与其他控制技术补偿器(PID和FOPID)相比,采用NPID补偿器的MRAC可以吸收非线性(空气阻力和车轮摩擦),并且具有最小的超调量、上升时间和沉降时间(35秒)。
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引用次数: 2
Robotics in Industry 4.0: A Bibliometric Analysis (2011-2022) 工业4.0中的机器人:文献计量分析(2011-2022)
Pub Date : 2022-09-01 DOI: 10.18196/jrc.v3i5.15453
R. Aravind Sekhar, Pritesh Shah, I. Iswanto
Robotics forms an integral part of industry 4.0, the industrial revolution of the 21st century. This paper presents a bibliometric analysis of Web of Science (WoS) indexed publications addressing this emerging field from 2011 till June 2022. WoS research publications were firstly analysed along multiple verticals such as annual counts, types, publishing sources, research directions, researchers, organizations, and countries. Next, co-authorship collaborations among authors, organizations, and countries were discovered. This was followed by an analysis of co-occurring keywords related to robotics in industry 4.0. Finally, a detailed citation analysis was carried out to unearth citation linkages among authors, institutions, documents, nations, and journals. Latest trends, under-investigated topics, and future directions are also discussed. Primary results indicate that more than 3000 articles are being published annually in this emerging field, with a total of 18,893 documents published in WoS during the last decade. The 'IEEE Access', Chinese Academy of Science, Wang Y. (USA), and the USA emerged as the topmost productive journal, institution, author, and nation. Porpiglia Francesco (Italy), Chinese Academy Science and USA obtained the highest co-authorship total link strength (TLS); whereas Lee Chengkuo (Singapore), China, Chinese Academy Science, and the IEEE Access scored the highest citation TLS among authors, countries, organizations, and sources respectively. Machine learning (ML) emerged as the highest co-occurring keyword, followed by artificial intelligence (AI). Computer Science emerged as the most trending research domain, followed by general applications. In the future, ML and AI will advance more sophisticated robots in industry 4.0 systems.
机器人技术是21世纪工业革命工业4.0的重要组成部分。本文对2011年至2022年6月科学网(Web of Science, WoS)索引的这一新兴领域的出版物进行了文献计量分析。首先从年度数量、类型、出版来源、研究方向、研究人员、组织和国家等多个垂直维度对WoS研究出版物进行分析。接下来,作者、组织和国家之间的合作被发现。随后分析了工业4.0中与机器人相关的共同出现的关键词。最后,进行了详细的引文分析,揭示了作者、机构、文献、国家和期刊之间的引文联系。还讨论了最新的趋势,未调查的主题和未来的方向。初步结果表明,每年在这个新兴领域发表3000多篇文章,在过去十年中,世界卫生组织共发表了18 893份文件。“IEEE Access”、中国科学院、王毅(美国)和美国成为产出最高的期刊、机构、作者和国家。意大利的Porpiglia Francesco、中国科学院和美国的共同作者总链接强度(TLS)最高;而李成国(新加坡)、中国、中国科学院和IEEE Access分别在作者、国家、组织和来源中获得了最高的引用TLS。同时出现最多的关键词是机器学习(ML),其次是人工智能(AI)。计算机科学成为最热门的研究领域,其次是通用应用。未来,机器学习和人工智能将在工业4.0系统中推进更复杂的机器人。
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引用次数: 8
A Comprehensive Overview of Classical and Modern Route Planning Algorithms for Self-Driving Mobile Robots 自动驾驶移动机器人经典与现代路径规划算法综述
Pub Date : 2022-09-01 DOI: 10.18196/jrc.v3i5.14683
N. S. Abu, W. Bukhari, M. Adli, S. Omar, S. A. Sohaimeh
Mobile robots are increasingly being applied in a variety of sectors, including agricultural, firefighting, and search and rescue operations. Robotics and autonomous technology research and development have played a major role in making this possible. Before a robot can reliably and effectively navigate a space without human aid, there are still several challenges to be addressed. When planning a path to its destination, the robot should be able to gather information from its surroundings and take the appropriate actions to avoid colliding with obstacles along the way. The following review analyses and compares 200 articles from two databases, Scopus and IEEE Xplore, and selects 60 articles as references from those articles. This evaluation focuses mostly on the accuracy of the different path-planning algorithms. Common collision-free path planning methodologies are examined in this paper, including classical or traditional and modern intelligence techniques, as well as both global and local approaches, in static and dynamic environments. Classical or traditional methods, such as Roadmaps (Visibility Graph and Voronoi Diagram), Potential Fields, and Cell Decomposition, and modern methodologies such as heuristic-based (Dijkstra Method, A* Algorithms, and D* Algorithms), metaheuristics algorithms (such as PSO, Bat Algorithm, ACO, and Genetic Algorithm), and neural systems such as fuzzy neural networks or fuzzy logic (FL) and Artificial Neural Networks (ANN) are described in this report. In this study, we outline the ideas, benefits, and downsides of modeling and path-searching technologies for a mobile robot.
移动机器人越来越多地应用于各种领域,包括农业、消防、搜索和救援行动。机器人技术和自主技术的研发在实现这一目标方面发挥了重要作用。在机器人能够在没有人类帮助的情况下可靠而有效地在空间中导航之前,仍有几个挑战需要解决。在规划到达目的地的路径时,机器人应该能够从周围环境中收集信息,并采取适当的行动,避免与沿途的障碍物相撞。下面的综述分析和比较了来自Scopus和IEEE Xplore两个数据库的200篇文章,并从这些文章中选择了60篇文章作为参考文献。这种评估主要集中在不同路径规划算法的准确性上。本文研究了常见的无碰撞路径规划方法,包括经典或传统和现代智能技术,以及静态和动态环境中的全局和局部方法。经典或传统的方法,如路线图(可视性图和Voronoi图)、势场和细胞分解,现代方法,如启发式(Dijkstra法、A*算法和D*算法)、元启发式算法(如PSO、Bat算法、ACO和遗传算法)和神经系统,如模糊神经网络或模糊逻辑(FL)和人工神经网络(ANN)在本报告中进行了描述。在这项研究中,我们概述了移动机器人建模和路径搜索技术的思想、优点和缺点。
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引用次数: 0
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Journal of Robotics and Control (JRC)
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