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

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Research on Attitude Active Disturbance Rejection Control for Miniature Unmanned Helicopter 小型无人直升机姿态自抗扰控制研究
Pub Date : 2022-12-02 DOI: 10.1109/ICCR55715.2022.10053873
Xinfan Yin, Hongxu Ma, Honglei An, Liang Wang
In this paper, the X-Cell 60 SE miniature unmanned helicopter is taken as the research object. Firstly, its full nonlinear flight dynamics model is established by Newton Euler method. On this basis, the model is trimmed for the basic state of hovering, and the control quantity and state quantity in hovering state are obtained. Then, the nonlinear model is analytically linearized according to the trimmed conditions of the hovering state, and the linearized simulation model in the hovering state is obtained. The active disturbance rejection controller is designed for the attitude control loop, and the numerical simulation is carried out in Matlab/Simulink simulation environment. The simulation results show that the designed active disturbance rejection controller can effectively stabilize the attitude motion of miniature unmanned helicopter and achieve reliable attitude stabilization control, and the control performance is significantly better than $Hinfty$ robust controller, which can meet the attitude control requirements of miniature unmanned helicopter.
本文以X-Cell 60se微型无人直升机为研究对象。首先,利用牛顿-欧拉法建立了其全非线性飞行动力学模型;在此基础上,对模型进行悬停基本状态的裁剪,得到悬停状态下的控制量和状态量。然后,根据悬停状态的裁剪条件对非线性模型进行解析线性化,得到悬停状态下的线性化仿真模型。针对姿态控制回路设计了自抗扰控制器,并在Matlab/Simulink仿真环境下进行了数值仿真。仿真结果表明,所设计的自抗扰控制器能够有效地稳定微型无人直升机的姿态运动,实现可靠的姿态稳定控制,控制性能明显优于$Hinfty$鲁棒控制器,能够满足微型无人直升机的姿态控制要求。
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引用次数: 0
Research on Multi-stage Closed-loop Control Strategy Based on Electromechanical Brake System 基于机电制动系统的多级闭环控制策略研究
Pub Date : 2022-12-02 DOI: 10.1109/ICCR55715.2022.10053916
Yifeng Zhu, Bo Yang, Lin Xu
In order to meet the dynamic and stable performance of the braking process in the electromechanical braking system, the relationship between the current threshold and the clamping force is selected to identify the critical point in the braking process, and the staged closed-loop control strategy is designed accordingly. At the same time, for the pressure loop of clamping force control in the braking process, the control strategy adopts fuzzy PID control. Finally, the electronic mechanical brake system simulation platform is built in the offline environment of MATLAB/Simulink. The simulation results prove that the control strategy in this paper can accurately identify the critical point in the braking process and stably follow the control objectives of each stage. Compared with the PID control, the fuzzy PID control algorithm designed in this paper improves the response speed and control quality of the target braking force within a certain range for the pressure loop which directly affects the clamping force control effect.
为了满足机电制动系统制动过程的动态稳定性能,选择电流阈值与夹紧力之间的关系,识别制动过程中的临界点,并据此设计分段闭环控制策略。同时,对于制动过程中夹紧力控制的压力回路,控制策略采用模糊PID控制。最后,在MATLAB/Simulink的离线环境下搭建了电子机械制动系统仿真平台。仿真结果表明,本文所提出的控制策略能够准确识别制动过程中的临界点,并稳定地遵循各阶段的控制目标。与PID控制相比,本文设计的模糊PID控制算法对于直接影响夹紧力控制效果的压力回路,在一定范围内提高了目标制动力的响应速度和控制质量。
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引用次数: 0
Weak Weld-target Recognition Based on Prior Knowledge 基于先验知识的弱焊接目标识别
Pub Date : 2022-12-02 DOI: 10.1109/ICCR55715.2022.10053910
Hongbin Ma, Yi Xu, Jie Liu
The welding technology is widely used in many manufacturing industries. The welding seams are weak targets due to unstable welding quality and the various kinds of noises. This article proposed a new method of weak-target recognition focus on welding seams, which helps to automatically track the welding seam in complex enviroment. We first relabel the data with “outer boxes” and “slopes” on the welding seam. Then we design a new recognition framework based on prior knowledge and YOLOv5 recognition algorithm. We trained weld images in many kinds of enviroment and compared the results. It shown that our method exceed the tradional method on both precision and recall.
焊接技术广泛应用于许多制造业。由于焊接质量不稳定和各种噪声的存在,焊缝是弱目标。提出了一种以焊缝为中心的弱目标识别新方法,有助于在复杂环境下对焊缝进行自动跟踪。我们首先在焊缝上用“外框”和“斜面”重新标记数据。然后设计了一种基于先验知识和YOLOv5识别算法的识别框架。对多种环境下的焊缝图像进行了训练,并对结果进行了比较。结果表明,该方法在查准率和查全率上均优于传统方法。
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引用次数: 0
Multi-UUV Detection Array Optimization Based on Ant Colony Algorithm 基于蚁群算法的多紫外探测阵列优化
Pub Date : 2022-12-02 DOI: 10.1109/ICCR55715.2022.10053915
Mingwei Liu, Lu Liu, Lichuan Zhang, Guang Pan, Peidong Dang, Yi Chen
With the increasing stealth performance of underwater detection targets and more complex detection tasks, a single underwater unmanned underwater vehicle (UUV) has been already unable to meet the current mission requirements. Therefore, in recent years, multi-UUV cooperative detection has been widely used in certain task. To address the problem that the change of multiple UUV formations in the detection task will have a large impact on the detection effectiveness, a multi-UUV formation optimization model is proposed. Then, the formation optimization problem of multi-UUV cooperative detection is solved through the ant colony algorithm. The results show that the algorithm in this paper is more robust than the traditional algorithm. and the ability to globally search for optimal solutions.
随着水下探测目标隐身性能的提高和探测任务的复杂化,单个水下无人潜航器已经无法满足当前的任务要求。因此,近年来,多紫外协同检测在某些任务中得到了广泛的应用。针对探测任务中多个UUV编队变化对探测效果影响较大的问题,提出了一个多UUV编队优化模型。然后,通过蚁群算法求解多uuv协同检测的队形优化问题。结果表明,本文算法比传统算法具有更强的鲁棒性。以及全局搜索最优解的能力。
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引用次数: 0
An Automated Statistical Evaluation Framework of Rapidly-Exploring Random Tree Frontier Detector for Indoor Space Exploration 一种用于室内空间探测的快速探测随机树边界探测器的自动统计评价框架
Pub Date : 2022-12-02 DOI: 10.1109/ICCR55715.2022.10053918
W. Andy, Wen-Yu Cheng Marty, Zhengbin Ni, Xiangnan Zhong
This paper focuses on the design of an automated statistical evaluation framework for mapping generation of Rapidly-Exploring Random Tree (RRT) frontier detectors. By evaluating the run time and distance traveled of the simulated Kobuki robot agent in a Gazebo environment, the designed framework can automatically evaluate the process on a user-defined Gazebo map for a large number of repeated simulations. We also expanded the experiment platform into customized maps with complex layouts and trial schemes. The key formulas and parameters are provided with different trial settings. During the development of this framework, we have added functions that allow the user to choose among the maps we have designed, and the initial positions of the simulated robots for each map at the beginning of each trial. We have also modified the modules developed by Umari et al. so that the RRT frontier detection process can be started automatically with pre-defined exploration area in place. Modules have also been added so that the run time and distance traveled by the simulated robot for each trial can be measured and saved to the respective CSV files for further statistical analysis. We have created additional procedures that ensure the consistency of each trial. The results show that our designed automated evaluation framework is reliable and suitable for use as a fully automated research platform for robot exploration.
研究了一种用于快速探索随机树(RRT)前沿探测器映射生成的自动统计评估框架设计。通过对仿真小木机器人agent在Gazebo环境中的运行时间和行走距离进行评估,设计的框架可以在用户自定义的Gazebo地图上自动评估过程,进行大量的重复模拟。我们还将实验平台扩展为具有复杂布局和试验方案的定制地图。给出了不同试验设置下的关键公式和参数。在这个框架的开发过程中,我们增加了一些功能,允许用户在我们设计的地图中进行选择,并在每次试验开始时为每个地图选择模拟机器人的初始位置。我们还修改了Umari等人开发的模块,使RRT边界探测过程可以在预定义的勘探区域内自动启动。还添加了一些模块,可以测量模拟机器人每次试验的运行时间和行进距离,并将其保存到相应的CSV文件中,以便进行进一步的统计分析。我们制定了额外的程序,以确保每次试验的一致性。结果表明,所设计的自动化评估框架是可靠的,适合作为机器人探索的全自动研究平台。
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引用次数: 1
Steering Wheel Rotation Angle Prediction Based on VGG-16 and Data Augmentation 基于VGG-16的方向盘转角预测及数据增强
Pub Date : 2022-12-02 DOI: 10.1109/ICCR55715.2022.10053867
Xin Song, Huili Cao, Haitao You
The deep learning technology based on convolutional neural network in the field of automatic driving makes automatic driving have extremely high practical application value and scientific research value. With the continuous improvement of network real-time and edge computing, autonomous driving technology will continue to show its powerful strength to liberate people's hands in the process of driving. Therefore, controlling the direction and angle of the steering wheel rotation according to the picture captured by the camera in front of the car is the core problem needs to be solved by automatic driving. We design and implement a steering wheel rotation angle prediction system for autonomous driving. By collecting road information on the simulator, data balance analysis is carried out on the collected road picture information. We designed related algorithms such as horizontal flipping of data balance processing, angle processing of bilaterally collected pictures, and random elimination of 0-angle information. For scenarios such as the correlation conditions in the prediction process of the actual vehicle rotation angle, we have done a complete and scientific data augmentation experiment, and trained an excellent prediction network model. From the results of the road test, it can make excellent performance in multi-scenario and complex road conditions, and can more accurately predict the trajectory and direction of the vehicle to be driven. It laies a certain theoretical foundation and accumulated practical experience for the development of autonomous vehicles under smart transportation.
基于卷积神经网络的深度学习技术在自动驾驶领域的应用,使得自动驾驶具有极高的实际应用价值和科研价值。随着网络实时性和边缘计算的不断提高,自动驾驶技术将继续展示其强大的力量,在驾驶过程中解放人们的双手。因此,根据车前方摄像头拍摄到的画面,控制方向盘转动的方向和角度,是自动驾驶需要解决的核心问题。设计并实现了一种用于自动驾驶的方向盘转角预测系统。通过在模拟器上采集道路信息,对采集到的道路图像信息进行数据平衡分析。我们设计了数据平衡处理的水平翻转、双边采集图片的角度处理、0角度信息的随机消除等相关算法。对于车辆实际转角预测过程中的相关条件等场景,我们进行了完整、科学的数据增强实验,训练出了优秀的预测网络模型。从路试结果来看,该系统在多场景、复杂路况下均能取得优异的性能,能够更准确地预测待驾驶车辆的行驶轨迹和方向。为智能交通下自动驾驶汽车的发展奠定了一定的理论基础和积累的实践经验。
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引用次数: 0
Lossless Image Compression with Learned Local and Global Features 学习局部和全局特征的无损图像压缩
Pub Date : 2022-12-02 DOI: 10.1109/ICCR55715.2022.10053851
Xuxiang Feng, An Li, Hongqun Zhang, Shengpu Shi
Estimating the probability distribution of an image is the key issue in lossless image compression. Though image compression can benefit from both global and local information, few works have been proposed to utilize both in lossless image compression. In this work, we propose to use a neural network for multiscale feature learning, the learned features are used to estimate the distribution of the image in a chain rule. In a further step, we utilize a context model to learn local features from the image. Finally, we combine the multiscale features with local features for image distribution learning. Our work surpasses state-of-the-art learning algorithms and several traditional codecs in several challenging datasets.
图像的概率分布估计是图像无损压缩的关键问题。虽然图像压缩可以从全局和局部信息中获益,但很少有人提出在无损图像压缩中同时利用全局和局部信息。在这项工作中,我们提出使用神经网络进行多尺度特征学习,使用学习到的特征在链式法则中估计图像的分布。在进一步的步骤中,我们利用上下文模型从图像中学习局部特征。最后,将多尺度特征与局部特征相结合进行图像分布学习。我们的工作在几个具有挑战性的数据集中超越了最先进的学习算法和几个传统的编解码器。
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引用次数: 0
The Influence Analysis of Stray Current on Urban Power Grid Substation Underlocal Damage of Rail Ground Insulation 杂散电流对城市电网变电站轨道地绝缘局部损坏的影响分析
Pub Date : 2022-12-02 DOI: 10.1109/ICCR55715.2022.10053901
Jianlei Zhang, Haiyang Gao, He Zhong, Mingwei Tang, Yujun Guo, Song Xiao, Guoqiang Gao
With the increase of the operation time of urban rail transit system, the insulation between the track and the earth is partially damaged due to environmental, stress damage and other factors, resulting in increased stray current leakage. The stray current flowing into the ground will flow into the neutral point of the transformer in the surrounding substation, which will have an impact on the urban power grid substation. The simulation model is used to analyze the impact of the location and number of rail ground insulation damage points on the ground potential and the impact of voltage and current density between substations with electrical connection relationship after rail ground insulation damage, providing support for rail ground insulation damage protection.
随着城市轨道交通系统运行时间的增加,轨道与地面之间的绝缘由于环境、应力破坏等因素而部分损坏,导致杂散电流泄漏增大。流入地面的杂散电流会流入周围变电站的变压器中性点,对城市电网变电站产生影响。利用仿真模型分析钢轨地绝缘损坏后,钢轨地绝缘损坏点的位置和数量对地电位的影响以及具有电气连接关系的变电站间电压和电流密度的影响,为钢轨地绝缘损坏防护提供支持。
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引用次数: 0
Learning-Based Model Predictive Control for Quadruped Locomotion on Slippery Ground 滑地四足运动基于学习的模型预测控制
Pub Date : 2022-12-02 DOI: 10.1109/ICCR55715.2022.10053909
Zhitong Zhang, Honglei An, Qing Wei, Hongxu Ma
Nowadays, reinforcement learning (RL) and model predictive control (MPC) are two of the most widely used methods in robotics community. Model-based MPC enable the robot with stable locomotion capabilities, while Model-free RL provide an automatic approach to learn the policy to maximization the corresponding task performance. In this work, be aiming at utilize the advantages of these two approaches, we propose a Learning-Based Model Predictive Control (LBMPC) methodology for quadruped robot which improves MPC performance by learning the upper-layer decision parameters for MPC though a Heuristic Monte-Carlo Expectation-Maximization (HMCEM) algorithm. We validate this framework with the problem of dynamic locomotion on slippery ground by learning the friction factor which be fixed in standard MPC algorithm. Simulation results show that our LBMPC succeeds in find the optimal friction factor respect to different ground, and our heuristic overcome the problem that the conventional EM algorithms is sensitive to the initial value of policy. At last, we deduce a heuristic strategy for crude but fast ground classification based on empirical data.
强化学习(RL)和模型预测控制(MPC)是目前机器人领域应用最广泛的两种方法。基于模型的MPC使机器人具有稳定的运动能力,而无模型的RL提供了一种自动学习策略的方法,以最大化相应的任务性能。在这项工作中,为了利用这两种方法的优点,我们提出了一种基于学习的四足机器人模型预测控制(LBMPC)方法,该方法通过启发性蒙特卡罗期望最大化(HMCEM)算法学习MPC的上层决策参数来提高MPC的性能。通过学习标准MPC算法中固定的摩擦系数,对该框架在光滑地面上的动态运动问题进行了验证。仿真结果表明,LBMPC算法成功地找到了不同地面的最优摩擦因数,并且克服了传统EM算法对策略初始值敏感的问题。最后,基于经验数据推导出一种粗略而快速的地面分类启发式策略。
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引用次数: 0
A Vehicle Information Authentication Method of Expressway Based on Heterogeneous Blockchain Technology 基于异构区块链技术的高速公路车辆信息认证方法
Pub Date : 2022-12-02 DOI: 10.1109/ICCR55715.2022.10053848
Zhou Yuanyuan, Shan Chunlin, Zhu Guiqing, Yao Songpu
With the continuous development of expressways' convenient and unconscious toll collection, it is crucial to improve the accuracy of highway vehicle authentication while reducing the time delay of highway vehicle charging. Based on the characteristics of multi-body and multi-stage operation status of highway vehicles, starting from the dynamic authentication of highway vehicle driving process, we propose the highway reliable driving trajectory authentication based on heterogeneous blockchain technology. It realized the real-time inspection of vehicle information and the reliable track authentication of expressway vehicles based on track information chain association.
随着高速公路收费便捷化和无意识化的不断发展,提高公路车辆认证的准确性,同时减少公路车辆收费的时间延迟是至关重要的。针对公路车辆多体、多阶段运行状态的特点,从公路车辆行驶过程的动态认证出发,提出了基于异构区块链技术的公路可靠行驶轨迹认证。基于轨道信息链关联,实现了车辆信息的实时检测和高速公路车辆的可靠轨道认证。
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引用次数: 0
期刊
2022 4th International Conference on Control and Robotics (ICCR)
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