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2021 IEEE International Conference on Mechatronics (ICM)最新文献

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Adaptive Cutting Force Observer for Machine Tool Considering Stage Parameter Variation 考虑阶段参数变化的机床自适应切削力观测器
Pub Date : 2021-03-07 DOI: 10.1109/ICM46511.2021.9385598
K. Ohno, H. Fujimoto, Yoshihiro Isaoka, Yuki Terada
Monitoring cutting force generated during the machining process is crucial to prevent tool breakage and chattering. The cutting force observer, which considers the machine tool as the two-inertia system, has been proposed to estimate cutting forces in wide bandwidth using multiple encoders. However, modeling errors and the parameter variation during machining can deteriorate estimation accuracy in such a model-based observer. Previous studies solved some modeling error issues, but inertia, friction, and other parameters that belong to the moving stage had rarely considered. Therefore, the adaptive cutting force observer is proposed in this paper. The proposal consists of online stage parameter identification and updating algorithm. The effectiveness of the proposed adaptive observer is demonstrated through the experiments using the simplified experimental setup.
监测加工过程中产生的切削力是防止刀具断裂和颤振的关键。提出了一种考虑机床为双惯量系统的切削力观测器,利用多编码器在宽带宽下估计切削力。然而,在这种基于模型的观测器中,建模误差和加工过程中的参数变化会降低估计精度。以往的研究解决了一些建模误差问题,但很少考虑惯性、摩擦等属于运动阶段的参数。为此,本文提出了自适应切削力观测器。该方案包括在线舞台参数辨识和更新算法。在简化的实验装置上进行了实验,验证了自适应观测器的有效性。
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引用次数: 3
Suppressing spatially distributed disturbances by exploiting additional sensors and actuators in inferential motion control 在推理运动控制中利用附加传感器和致动器抑制空间分布的干扰
Pub Date : 2021-03-07 DOI: 10.1109/ICM46511.2021.9385648
N. Dirkx, T. Oomen
Structural deformations resulting from exogenous disturbances limit the control performance in high-precision positioning systems. The aim of this paper is to identify these limitations and mitigate these through multivariable inferential control. A systematic analysis and control design framework is established. Herein, additional sensors and actuators are exploited to achieve control performance beyond conventional limits. Successful performance enhancement using the presented methods is shown on an identified wafer stage model.
在高精度定位系统中,由外源扰动引起的结构变形限制了系统的控制性能。本文的目的是识别这些限制,并通过多变量推理控制减轻这些限制。建立了系统的分析与控制设计框架。在此,利用附加的传感器和执行器来实现超出常规限制的控制性能。在一个已确定的晶圆级模型上显示了使用所提出的方法成功地提高了性能。
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引用次数: 1
A Deep Learning-based Approach to Line Crossing Prediction for Lane Change Maneuver of Adjacent Target Vehicles 基于深度学习的相邻目标车辆变道机动过线预测方法
Pub Date : 2021-03-07 DOI: 10.1109/ICM46511.2021.9385665
Xulei Liu, Ge Jin, Yafei Wang, Chengliang Yin
Forecasting the motion of surrounding vehicles is a key issue for autonomous vehicles to assess potential risks and avoid collisions. Among them, the sharp lane change of vehicle in adjacent lane has a greater impact on the ego vehicle. In this paper, we propose a deep learning-based approach to predict the lane change maneuver of adjacent vehicles and quantitatively estimate the position and time to line crossing point (PTLC). In order to distinguish the real lane change from an unintentional drifting between lane boundaries and make accurate prediction of the line crossing point, the features of vehicle kinematics and the driver's driving style as well as the interaction with surrounding vehicle are extracted. Furthermore, a deep neural network is used to process and fuse these features to obtain the probability distribution of PTLC, in which a gated recurrent units (GRU) is adopted as an improvement to robustly learn the historical trajectory of the adjacent target vehicle. Experiments using the data collected from highways show that the proposed method can achieve a reliable prediction of the driver's intention and line crossing point.
预测周围车辆的运动是自动驾驶汽车评估潜在风险和避免碰撞的关键问题。其中,相邻车道车辆急剧变道对自我车辆的影响较大。在本文中,我们提出了一种基于深度学习的方法来预测相邻车辆的变道机动,并定量估计到线交叉点(PTLC)的位置和时间。为了区分真正的变道和车道边界之间的无意漂移,准确预测车道交叉点,提取了车辆运动学特征、驾驶员驾驶风格特征以及与周围车辆的相互作用特征。然后,利用深度神经网络对这些特征进行处理和融合,得到PTLC的概率分布,其中采用门控循环单元(GRU)作为改进,鲁棒学习相邻目标车辆的历史轨迹。实验结果表明,该方法能较好地预测驾驶员意图和过线点。
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引用次数: 2
Observer-based Angle of Attack Estimation for Tilt-Wing eVTOL Aircraft 基于观测器的倾翼垂直起降飞机攻角估计
Pub Date : 2021-03-07 DOI: 10.1109/ICM46511.2021.9385670
Kentaro Yokota, H. Fujimoto, Hiroshi Kobayashi
Research and development have been very active in electric vertical takeoff and landing (eVTOL) aircraft. Tilt-Wing aircraft especially receive significant attention as one of the most efficient configurations; however, they are apt to be unstable during the transition from hover to cruise. The angle of attack (AoA) is a critical parameter for aircraft motion, and with its real-time data, Tilt-Wing aircraft would achieve a more robust transition. Conventional methods of obtaining AoA require either additional sensors or an aircraft model, which is not robust to propeller slipstreams and unsuitable for Tilt-Wing aircraft. In this paper, a new AoA estimation method for Tilt-Wing aircraft is proposed. The proposed method is based on the propeller dynamics model and requires only an existing pitot tube. Wind tunnel tests verify its effectiveness.
电动垂直起降(eVTOL)飞机的研究和开发非常活跃。倾斜翼飞机作为最有效的配置之一尤其受到重视;然而,它们在从悬停到巡航的过渡过程中容易出现不稳定。迎角(AoA)是飞机运动的关键参数,有了它的实时数据,倾翼飞机将实现更稳健的过渡。传统的AoA获取方法要么需要额外的传感器,要么需要飞机模型,而这种方法对螺旋桨滑流的鲁棒性不强,也不适用于倾翼飞机。提出了一种新的倾斜翼飞机AoA估计方法。该方法基于螺旋桨动力学模型,只需要一个现有的皮托管。风洞试验验证了其有效性。
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引用次数: 1
Waste object classification with AI on the edge accelerators 在边缘加速器上使用AI进行垃圾分类
Pub Date : 2021-03-07 DOI: 10.1109/ICM46511.2021.9385682
Michael Schneider, R. Amann, C. Mitsantisuk
The classification of waste with neural networks is already a topic in some scientific papers. An application in the embedded systems area with current AI processors to accelerate the inference has not yet been discussed. Therefore a prototype is created which classifies waste objects and automatically opens the appropriate container for the object. The area of application is in the public space. For the classification a dataset with 25.681 images and 11 classes was created to retrain the CNNs EfficentNet-B0, MobileNet-v2 and NASNet-Mobile. These CNNs run on the current Edge AI -accelerator processors from Google, Intel and Nvidia and are compared for performance, consumption and accuracy. The result of these comparisons and shows the advantages and disadvantages of the respective processors and the CNNs. For the prototype, the most suitable combination of hardware and AI architecture is used and exhibited at the university fair KasetFair2020.
利用神经网络对垃圾进行分类已经成为一些科学论文的主题。目前的人工智能处理器在嵌入式系统领域加速推理的应用尚未讨论。因此,创建了一个原型,它可以对废物进行分类,并自动打开相应的容器。应用的领域是在公共空间。在分类方面,建立了包含25.681张图像和11个类的数据集,对cnn的EfficentNet-B0、MobileNet-v2和NASNet-Mobile进行了再训练。这些cnn在谷歌、英特尔和英伟达目前的Edge人工智能加速器处理器上运行,并在性能、消耗和准确性方面进行了比较。这些比较的结果显示了各自处理器和cnn的优点和缺点。对于原型机,使用了最合适的硬件和人工智能架构组合,并在KasetFair2020大学博览会上展出。
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引用次数: 1
Design of Acceleration Control for Center of Mass on Sliding Robot 滑动机器人质心加速度控制设计
Pub Date : 2021-03-07 DOI: 10.1109/ICM46511.2021.9385681
Masatsugu Nishihara, F. Asano
To achieve steady locomotion with simple control for a locomotion robot on a slippery surface, the authors have been developing a crawling-like locomotion robot positively utilizing sliding. The previous researches were clarified that motion of the center of mass mightily induces sliding motion; whereas, they does not elucidate a principle of sliding motion generation on slippery ground. Aiming at designing effective acceleration control to efficiently slide on a slippery level ground based on a locomotion principle, we investigate relation between acceleration of the center of mass and friction in this paper. First, we introduce a simple robot model with two orthogonal telescopic joints. Second, we derive the equation of motion. Third, we design the acceleration control for the center of mass. Fourth, we show numerical simulation. The robot steadily locomotes on the slippery ground with simple control. In addition, our model allowed us to choose appropriate spring parameters which improve the specific resistance of the robot to 0.2039 [-].
为了使运动机器人在光滑的表面上以简单的控制实现稳定的运动,作者开发了一种积极利用滑动的类爬行运动机器人。澄清了以往的研究,即质心的运动强烈地引起滑动运动;然而,它们并没有阐明滑地上滑动运动产生的原理。基于运动原理,为设计有效的加速度控制系统,使滑车在光滑的地面上高效滑行,研究了质心加速度与摩擦力的关系。首先,我们介绍了一个具有两个正交伸缩关节的简单机器人模型。其次,推导出运动方程。第三,设计了质心加速度控制。第四,进行了数值模拟。通过简单的控制,机器人可以在光滑的地面上平稳地移动。此外,我们的模型允许我们选择合适的弹簧参数,将机器人的比阻提高到0.2039[-]。
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引用次数: 0
Precision Motion Control of Constrained SISO Nonlinear System via Direct Optimized Compensation 基于直接优化补偿的约束SISO非线性系统精确运动控制
Pub Date : 2021-03-07 DOI: 10.1109/ICM46511.2021.9385645
Xingyi Liu, Yingqiang Liu, Fuxin Duan, Zheng Chen, B. Yao
Maintaining high precision tracking while considering both state and input constraints has always been a challenging issue, where most existing studies merely solve constrained issues and few take integrated performance into account. Thus, we put forwarded a direct optimization-based compensation adaptive robust control (DOCARC) approach for single input single output(SISO) nonlinear system, where the model compensation term of the control input is directly optimized and the reference is simultaneously replanned so as to conform to the constraints. Simulations are conducted in the single-axis linear motor system, and comparative results further verify the superiority and effectiveness of the proposed scheme.
在同时考虑状态约束和输入约束的情况下保持高精度跟踪一直是一个具有挑战性的问题,大多数现有研究只是解决约束问题,很少考虑综合性能。为此,针对单输入单输出(SISO)非线性系统提出了一种基于直接优化的补偿自适应鲁棒控制(DOCARC)方法,该方法直接优化控制输入的模型补偿项,同时对参考点进行重新规划,使其符合约束条件。在单轴直线电机系统中进行了仿真,对比结果进一步验证了所提方案的优越性和有效性。
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引用次数: 1
A Study of Multisampling Deadbeat Control for Low Carrier Frequency PMSM Drive System Used in EVs and HEVs 电动汽车和混合动力汽车低载频永磁同步电机驱动系统多采样无差拍控制研究
Pub Date : 2021-03-07 DOI: 10.1109/ICM46511.2021.9385637
Kazuya Ito, Ryosuke Suzuki, K. Yoshimoto, T. Yokoyama
This paper proposes MSDB (Multi Sampling Deadbeat control) of PMSM (Permanent Magnet Synchronous Motor) drive system for EVs (Electric Vehicles) and HEVs (Hybrid Electric Vehicles) using a FPGA (Field Programmable Gate Array) to use potential performance of motor control response. The electric motor drive system used in EVs and HEVs gives not only efficient powertrain, but also quick and smooth response as an advantage compared with ICE (Internal Combustion Engine). The proposed deadbeat control using a FPGA could show good response and robustness, especially for electric motor drive system using low carrier frequency of PWM (Pulse Width Modulation) inverter like as EVs and HEVs.
针对电动汽车和混合动力汽车的永磁同步电机驱动系统,提出了基于FPGA(现场可编程门阵列)的多采样无差拍控制(MSDB),以充分利用电机控制响应的潜在性能。电动汽车和混合动力汽车中使用的电动机驱动系统不仅具有高效的动力系统,而且与内燃机相比具有快速平稳的响应能力。基于FPGA的无差拍控制具有良好的响应性和鲁棒性,尤其适用于电动汽车和混合动力汽车等采用低载波PWM(脉宽调制)逆变器的电机驱动系统。
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引用次数: 2
An improved ant colony optimization for path planning with multiple UAVs 多无人机路径规划的改进蚁群算法
Pub Date : 2021-03-07 DOI: 10.1109/ICM46511.2021.9385695
Jing Li, Yonghua Xiong, Jinhua She
As exploiting unmanned aerial vehicles (UAVs) as mobile elements is a new research trend recently, approximation algorithms to solve path planning problems for UAVs are promising approaches. This paper present a solution for the problem of minimum mission time to cover a set of target points in the surveillance area with multiple UAVs. In this methodology, we propose an improved ant colony optimization (ACO) combining ACO with greedy strategy. The main purpose is to find the optimal number of UAVs and to plan the paths of the minimum mission time. Simulation results demonstrate the validity and the superiority of the proposed algorithm.
利用无人机作为移动单元是近年来研究的一个新趋势,逼近算法是解决无人机路径规划问题的一种很有前途的方法。针对多架无人机在监视区域内覆盖一组目标点时任务时间最短的问题,提出了一种解决方案。在此方法中,我们提出了一种将蚁群优化与贪婪策略相结合的改进蚁群优化方法。其主要目的是寻找最优的无人机数量和规划最短任务时间的路径。仿真结果验证了该算法的有效性和优越性。
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引用次数: 10
Challenges of Linearization-based Control of Industrial Robots with Cycloidal Drives 摆线驱动工业机器人线性化控制的挑战
Pub Date : 2021-03-07 DOI: 10.1109/ICM46511.2021.9385627
Patrick Mesmer, Michael Neubauer, A. Lechler, A. Verl
Most industrial robots are still controlled with motor-side feedback. To increase the accuracy of industrial robots, controllers with joint-side feedback and explicit consideration of the joint elasticity, such as linearization-based controllers, are needed. The key issue for the performance of linearization-based controllers is a high-fidelity model. Today, the drivetrains installed in the joints of industrial robots of the high payload class usually consist of a permanent magnet synchronous machine and a cycloidal drive. Such robot joints are highly nonlinear due to effects like hysteresis, torque ripples and friction. Therefore, the drivetrain dynamics are crucial for the experimental performance of linearization-based controllers for industrial robots. This paper identifies the challenges in linearization-based control of industrial robots with such a drivetrain configuration based on experimental results on a KUKA KR-210-2. Using an exemplary approach, it is shown that a linearization-based controller does not provide the theoretical performance due to needed model simplifications. For this purpose, simulation and experimental results are compared to a linear robot controller with motor-side feedback. These results indicate why such controllers are still a valid alternative for the practical application of similar industrial robots.
大多数工业机器人仍然由电机侧反馈控制。为了提高工业机器人的精度,需要具有关节侧反馈和明确考虑关节弹性的控制器,如基于线性化的控制器。基于线性化的控制器性能的关键问题是高保真度模型。目前,安装在高载荷级工业机器人关节中的传动系统通常由永磁同步电机和摆线轮驱动组成。由于迟滞、转矩波纹和摩擦等影响,这种机器人关节具有高度非线性。因此,动力传动系统动力学对基于线性化的工业机器人控制器的实验性能至关重要。本文基于KUKA KR-210-2的实验结果,确定了具有这种动力传动系统配置的工业机器人线性化控制的挑战。使用示例性方法表明,由于需要模型简化,基于线性化的控制器不能提供理论性能。为此,将仿真和实验结果与具有电机侧反馈的线性机器人控制器进行了比较。这些结果表明,为什么这种控制器仍然是一个有效的替代类似的工业机器人的实际应用。
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引用次数: 2
期刊
2021 IEEE International Conference on Mechatronics (ICM)
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