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2022 4th International Conference on Control and Robotics (ICCR)最新文献

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Design of Temperature Control System of Photodetector Based on ADN8831 基于ADN8831的光电探测器温度控制系统设计
Pub Date : 2022-12-02 DOI: 10.1109/ICCR55715.2022.10053852
Yajie Tang, Xisheng Li, Jia You, Ran Hong
The performance parameters and long-term operation stability of the photodetector in radiation temperature measurement will change with the change of working temperature. In order to meet the high precision temperature control demand of the photodetector, a temperature control system based on the thermoelectric refrigeration control chip ADN8831 is designed. The control system uses the thermistor as the temperature sensing element, and uses the analog proportional integral differential (PID) circuit to control the temperature closed-loop. The experimental results show that the Thermoelectric cooler (TEC) inside the photodetector can stabilize at the set temperature within 11 s under the drive of the temperature control system, and the temperature control accuracy is as low as ± 0.01 °C.
光电探测器在辐射测温中的性能参数和长期工作稳定性会随着工作温度的变化而变化。为了满足光电探测器的高精度温度控制需求,设计了一种基于热电制冷控制芯片ADN8831的温度控制系统。控制系统采用热敏电阻作为感温元件,采用模拟比例积分微分(PID)电路对温度进行闭环控制。实验结果表明,光电探测器内部的热电冷却器(TEC)在控温系统的驱动下,能在11 s内稳定在设定温度,控温精度低至±0.01℃。
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引用次数: 0
A DDQN-Based Path Planning Method for Multi-UAVs in a 3D Indoor Environment 基于ddqn的多无人机三维室内路径规划方法
Pub Date : 2022-12-02 DOI: 10.1109/ICCR55715.2022.10053884
Yuchen Ma, Yancai Xu
Path planning is one of the most essential for unmanned aerial vehicle (UAV) autonomous navigation. The deep Q-network (DQN) method is widely used for solving the path planning problem, but most researchers simplify the scene into the 2D environment with a single UAV and ignore the fact that there are always multi-UAVs working in 3D environments. Therefore, a double deep Q-network (DDQN) based global path planning algorithm for multi-UAVs in a 3D indoor environment is proposed in this paper. Firstly, the double deep Q-network was designed to approximate the action of multi-UAVs. The 3D space is discretized into grids while each gird is a basic unit of path planning and the whole grid map is the input for the neural network. Then, a continual reward function generated by building an artificial potential field was determined to replace the traditional sparse reward function. Moreover, the action selection strategy is used to determine the current optimal action so that multi-UAVs are able to find the path to reach target points in a simulated indoor environment and avoid crashing into each other and obstacles at the same time. Finally, the experiment verifies the effectiveness of the proposed method. The simulation result demonstrates that the agents can effectively avoid local optimal solution and correctly predict the global optimal action.
路径规划是实现无人机自主导航的关键问题之一。深度q -网络(deep Q-network, DQN)方法被广泛用于解决路径规划问题,但大多数研究人员将场景简化为单个无人机的二维环境,而忽略了三维环境中总是有多架无人机工作的事实。为此,本文提出了一种基于双深度q网络(DDQN)的三维室内多无人机全局路径规划算法。首先,设计了双深度q网络来逼近多无人机的动作;将三维空间离散成网格,每个网格作为路径规划的基本单元,整个网格图作为神经网络的输入。然后,通过构建人工势场生成连续奖励函数来代替传统的稀疏奖励函数。利用动作选择策略确定当前最优动作,使多架无人机在模拟室内环境中找到到达目标点的路径,同时避免相互碰撞和障碍物碰撞。最后,通过实验验证了所提方法的有效性。仿真结果表明,该智能体能够有效避免局部最优解,并正确预测全局最优行为。
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引用次数: 1
Table of Contentes 目录表
Pub Date : 2022-12-02 DOI: 10.1109/iccr55715.2022.10053866
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引用次数: 0
A Multi-AUV Bearings-Only Multi-target Tracking Method Based on the Fast LMB Filter 基于快速LMB滤波的多auv单方位多目标跟踪方法
Pub Date : 2022-12-02 DOI: 10.1109/ICCR55715.2022.10053872
Yuexing Zhang, Yiping Li, Shuo Li, J. Zeng, Liang Li, Gaopeng Xu, Peiyan Gao
Autonomous underwater vehicles (AUVs) with bearing target tracking capability are fundamental and essential. However, they face the problems of high nonlinearity, difficult target trajectory initialization, and poor multi-target tracking (MTT) performance. Consequently, we adopt a novel MTT method for multi-AUV based on the fast Labeled Multi-Bernoulli (LMB) filter. In this method, the LMB filter uses belief propagation (BP) to solve the data association problem quickly and effectively approximate the LMB during the update step. And a Gaussian mixture approximation is used to determine the new potential target trajectory based on individual AUV-bearing measurements. Furthermore, we employ the iterator-corrector strategy to perform the fast LMB filter for multi-AUV. The simulation results show that the method performs well in MTT for multi-AUV using bearing-only measurements.
具有方位目标跟踪能力的自主水下航行器是水下航行器发展的基础和必要条件。然而,它们面临着高非线性、目标轨迹初始化困难和多目标跟踪性能差的问题。因此,我们采用了一种基于快速标记多伯努利(LMB)滤波器的多auv MTT方法。在该方法中,LMB滤波器使用信念传播(BP)来快速解决数据关联问题,并在更新步骤中有效地逼近LMB。基于单个auv方位测量,采用高斯混合近似确定新的潜在目标轨迹。此外,我们采用迭代校正策略对多水下机器人进行快速LMB滤波。仿真结果表明,该方法在多水下机器人的单方位MTT测试中具有良好的性能。
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引用次数: 0
Motion Estimation Based on an Improved Optical Flow Method Using PIV for VSLAM 基于PIV改进光流法的VSLAM运动估计
Pub Date : 2022-12-02 DOI: 10.1109/ICCR55715.2022.10053913
Sheng Yang, Lan Cheng, Jiaqi Yin
As an important research topic in the field of robotics, the optical flow method is widely used for motion estimation in visual simultaneous location and mapping (VSLAM). However, the optical flow method is based on the gray-invariant assumption, which restricts its application in the case of drastic luminosity variation. Moreover, the optical flow method can speed up the processing speed in motion estimation, but it cannot work effectively in scenarios with missing features. As a velocity measurement technology in the field of flow field and fluid, the particle image velocimetry (PIV) can overcome the aforementioned disadvantages of the optical flow method, and achieve motion estimation since it considers points in an image uniformly and can achieve sub-pixel accuracy for positional estimation. To this end, an improved optical flow method based on PIV is proposed by adopting the FFT cross-correlation matching algorithm and the sub-pixel displacement matching algorithm to estimate the image pixel displacement in the field of missing features. Experiments on the EUROC data-set show that the proposed method can not only track the motion of more pixels compared with that the multi-layer optical flow method, but also run in higher accuracy in the areas with missing features.
光流方法作为机器人领域的一个重要研究课题,被广泛应用于视觉同步定位与映射(VSLAM)中的运动估计。然而,光流法基于灰度不变假设,限制了其在亮度剧烈变化情况下的应用。此外,光流方法可以加快运动估计的处理速度,但在缺少特征的情况下不能有效地工作。粒子图像测速(PIV)作为流场和流体领域的一种速度测量技术,克服了光流法的上述缺点,由于均匀地考虑图像中的点,可以实现运动估计,并且可以实现亚像素精度的位置估计。为此,提出了一种改进的基于PIV的光流方法,采用FFT互相关匹配算法和亚像素位移匹配算法来估计缺失特征域的图像像素位移。在EUROC数据集上的实验表明,与多层光流方法相比,该方法不仅可以跟踪更多像素的运动,而且在特征缺失区域的运行精度更高。
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引用次数: 0
Traffic Prediction Model Based on Spatio-temporal Graph Attention Network 基于时空图注意力网络的交通预测模型
Pub Date : 2022-12-02 DOI: 10.1109/ICCR55715.2022.10053874
Jing Chen, Linkai Wang, Wen Wang, Ruizhuo Song
Smart transportation is an important part of building a smart city, and accurate traffic forecasting is crucial for citizen travel and urban construction. Aiming at the temporal and spatial dimensions in traffic forecasting, we focus on the extraction methods of the correlation between the two dimensions, and propose a new prediction model of the spatio-temporal graph attention network from the temporal correlation and the spatial correlation. The structure of the model is studied and analyzed. Finally, experiments are carried out on the mainstream traffic data sets, and by comparing with other prediction models, it is concluded that the evaluation indicators of the prediction model are better than other models.
智慧交通是智慧城市建设的重要组成部分,准确的交通预测对市民出行和城市建设至关重要。针对交通预测中的时间维度和空间维度,重点研究了两个维度之间相关性的提取方法,并从时间相关性和空间相关性两方面提出了一种新的时空图注意力网络预测模型。对模型的结构进行了研究和分析。最后,在主流交通数据集上进行实验,通过与其他预测模型的对比,得出预测模型的评价指标优于其他模型的结论。
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引用次数: 0
Research on the Optimal Sorting Path of Intelligent Logistics Warehouse 智能物流仓库最优分拣路径研究
Pub Date : 2022-12-02 DOI: 10.1109/ICCR55715.2022.10053898
Xingfang Fu, Hongjun Jiang
With the rapid development of China's economy and the wide application of Internet technology, the trend of intelligent development of logistics warehouses is becoming increasingly obvious, and it is particularly prominent to solve the problem of the shortest path of intelligent logistics warehouse robots. This paper proposes Ant colony algorithm, Dijkstra algorithm and $mathrm{A}^{star}$ algorithm to analyze the optimization problem of intelligent warehouse sorting path. According to the actual situation of intelligent warehouse sorting, simulation is carried out in three situations, such as the change of the placement position of inventory logistics spare parts and the transformation of the scale of intelligent warehouse, and the advantages and disadvantages of various algorithms in practical applications are compared and analyzed, so as to provide decision-making reference for the selection of intelligent warehouse sorting path optimization methods in different situations.
随着中国经济的快速发展和互联网技术的广泛应用,物流仓库智能化发展的趋势日益明显,解决智能物流仓库机器人最短路径问题尤为突出。本文提出蚁群算法、Dijkstra算法和$mathrm{A}^{star}$算法来分析智能仓库分拣路径的优化问题。根据智能仓库分拣的实际情况,对库存物流备品备件放置位置的变化和智能仓库规模的转变等三种情况进行了仿真,并对各种算法在实际应用中的优缺点进行了比较分析。从而为不同情况下智能仓库分拣路径优化方法的选择提供决策参考。
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引用次数: 0
Salient Knowledge-Based Object Detection 突出的基于知识的对象检测
Pub Date : 2022-12-02 DOI: 10.1109/ICCR55715.2022.10053899
Xueyuan Zhang, Chunzhe Wang, Han Du, Li Quan, Jin Shi, Yirong Ma
Human use their visual systems to perceive the interest objects in the images and videos with the past experience including shapes, textures, spatial knowledge and other subconscious information. In this paper, we develop an end-to-end object detection framework, combining with salient knowledge of objects. Firstly, we use the convolutional neural networks(CNNs) to extract the multi-scales feature maps representing the normal knowledge of objects in the images and videos. Then, the candidate feature map is selected from the extracted feature maps to encode the salient knowledge of objects using the mathematical strategy, and the new feature map is generated using the candidate feature map and the salient knowledge of objects. Thirdly, we use the feature map combining with salient knowledge and other feature maps at different scales to identify and localize the objects in the images and videos. The results show that our proposed approach can achieve better performance than other attention-based object detectors on PASCAL VOC 2007 and PASCAL VOC 2012, and this indicates the predicted results of our approach have a good consistency with the object's perception of human brains. At the same time, our approach can process 43 frames per second on the device NVIDIA GTX1080, and is more practical from the efficiency of running time.
人类的视觉系统利用过去的经验,包括形状、纹理、空间知识等潜意识信息,感知图像和视频中感兴趣的物体。在本文中,我们开发了一个端到端的目标检测框架,并结合了目标的显著性知识。首先,利用卷积神经网络(cnn)提取图像和视频中代表物体正常知识的多尺度特征图;然后,从提取的特征图中选择候选特征图,利用数学策略对目标显著性知识进行编码,利用候选特征图和目标显著性知识生成新的特征图。第三,结合显著性知识和其他不同尺度的特征图对图像和视频中的目标进行识别和定位。结果表明,我们的方法在PASCAL VOC 2007和PASCAL VOC 2012上取得了比其他基于注意力的目标检测器更好的性能,这表明我们的方法的预测结果与人类大脑对目标的感知有很好的一致性。同时,我们的方法可以在NVIDIA GTX1080设备上每秒处理43帧,从运行时间的效率上更加实用。
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引用次数: 0
Analysis of Stray Current Intrusion into Grid Substation under Multiple Factors 多因素下电网变电站杂散电流入侵分析
Pub Date : 2022-12-02 DOI: 10.1109/ICCR55715.2022.10053908
Haiyan Gao, Ru Wei, Jiangtao Liu, Zijing Wang, Hemin Zhong, Ye Cao, Mingwei Tang, Jianlei Zhang
In modern cities, with the continuous intensification of subway lines, the impact of the stray current generated on the power system is constantly expanding, becoming a potential threat to the stability of the power supply of the power system. As a coupling channel between the subway system and the power grid system, different soil structures have a profound impact on the distribution of stray currents. In this paper, a coupled finite element model (FEM) of a single subway line and a power system is constructed, and the distribution characteristics of stray currents under different soil structure conditions and traction conditions are studied. The results show that different soil structures affect the surface potential distribution around the subway and affect the neutral point current of the transformer.
在现代城市中,随着地铁线路的不断强化,产生的杂散电流对电力系统的影响也在不断扩大,成为电力系统供电稳定的潜在威胁。作为地铁系统与电网系统之间的耦合通道,不同的土体结构对杂散电流的分布有着深刻的影响。本文建立了单一地铁线路与电力系统的耦合有限元模型,研究了不同土壤结构条件和牵引条件下杂散电流的分布特征。结果表明,不同土壤结构对地铁周围的表面电位分布有影响,对变压器中性点电流也有影响。
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引用次数: 0
Research on Dynamic Parameter Identification of Large Inertia Industrial Robot Based on RBFNNs 基于rbfnn的大惯量工业机器人动态参数辨识研究
Pub Date : 2022-12-02 DOI: 10.1109/ICCR55715.2022.10053871
Zicong Chen, L. Wang, Hui Zhang, Jianqi Liu, Qin-ruo Wang
Aiming at the accuracy of the large inertia industrial robot dynamic model, a radial basis function neural networks (RBFNNs) weighted least square (WLS) identification scheme is proposed to further improve the accuracy of the dynamic model. Based on the dynamic linearization model of a large inertia industrial robot, the open-source toolbox Sympybotics is introduced to assist in obtaining the minimum inertia parameter set and observation matrix. The finite-term Fourier series is selected as the excitation trajectory while the condition number of the observation matrix is applied as the performance index for optimization. Its purpose is to ensure that the impact of external disturbances on the identification data is minimized while fully exciting the robot dynamics. Based on the actual operating data, the weighted least squares method is used to identify the kinetic parameters to obtain a rough solution of the kinetic parameters. Further, the accurate solution is obtained by nonlinear constraint function optimization and RBFNNs optimization. The experimental results show that the proposed method could guarantee the accuracy of the dynamic model of the large inertia industrial robot effectively, which provides an important technical support for its high-performance motion control.
针对大惯量工业机器人动力学模型的精度问题,提出了一种径向基函数神经网络(RBFNNs)加权最小二乘(WLS)辨识方案,进一步提高了动力学模型的精度。基于大惯量工业机器人的动态线性化模型,引入开源工具箱symybotics辅助求解最小惯量参数集和观测矩阵。选取有限项傅立叶级数作为激励轨迹,以观测矩阵的条件数作为优化性能指标。其目的是确保外部干扰对识别数据的影响最小化,同时充分激发机器人动力学。根据实际运行数据,采用加权最小二乘法对动力学参数进行辨识,得到动力学参数的粗略解。在此基础上,通过非线性约束函数优化和rbfnn优化得到了精确解。实验结果表明,该方法能有效地保证大惯量工业机器人动力学模型的准确性,为其高性能运动控制提供了重要的技术支持。
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引用次数: 1
期刊
2022 4th International Conference on Control and Robotics (ICCR)
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