Mechatronics最新文献

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A novel feedforward extended model reference adaptive control of PKMs: Design and real-time experiments PKM 的新型前馈扩展模型参考自适应控制:设计与实时实验
IF 3.1 3区 计算机科学
Mechatronics Pub Date : 2024-10-19 DOI: 10.1016/j.mechatronics.2024.103261
Youcef Fitas , Ahmed Chemori , Johann Lamaury , Thierry Roux
{"title":"A novel feedforward extended model reference adaptive control of PKMs: Design and real-time experiments","authors":"Youcef Fitas ,&nbsp;Ahmed Chemori ,&nbsp;Johann Lamaury ,&nbsp;Thierry Roux","doi":"10.1016/j.mechatronics.2024.103261","DOIUrl":"10.1016/j.mechatronics.2024.103261","url":null,"abstract":"<div><div>This paper presents a novel approach for controlling Parallel Kinematic Manipulators (PKMs) using a feedforward augmented Model Reference Adaptive Control (MRAC) scheme. The original direct MRAC approach lacks the knowledge of the dynamic model and does not ensure boundedness of the feedback gains. To overcome these limitations, our proposed approach incorporates a feedforward dynamic term to enhance the tracking performance, and a projection operator to guarantee the boundedness of the feedback gains. The proposed controller is validated through real-time experiments using a 6-Degrees-Of-Freedom (DOF) PKM, and is compared with the original direct MRAC and some state-of-the-art controllers in various scenarios, including nominal and robustness cases. The obtained experimental results demonstrate the superiority of the proposed approach in terms of trajectory tracking performances and adaptation efficiency.</div></div>","PeriodicalId":49842,"journal":{"name":"Mechatronics","volume":"104 ","pages":"Article 103261"},"PeriodicalIF":3.1,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Recover a moving rotor UAV without ground–air communications: System and control of a dual-stage tracking device 在没有地空通信的情况下回收移动旋翼无人机:双级跟踪装置的系统与控制
IF 3.1 3区 计算机科学
Mechatronics Pub Date : 2024-10-11 DOI: 10.1016/j.mechatronics.2024.103235
Jinge Si, Bin Li, Yongkang Xu, Liang Wang, Chencheng Deng, Junzheng Wang, Shoukun Wang
{"title":"Recover a moving rotor UAV without ground–air communications: System and control of a dual-stage tracking device","authors":"Jinge Si,&nbsp;Bin Li,&nbsp;Yongkang Xu,&nbsp;Liang Wang,&nbsp;Chencheng Deng,&nbsp;Junzheng Wang,&nbsp;Shoukun Wang","doi":"10.1016/j.mechatronics.2024.103235","DOIUrl":"10.1016/j.mechatronics.2024.103235","url":null,"abstract":"<div><div>Recovering a moving rotor unmanned aerial vehicle (UAV) using a single-stage dynamic tracking device poses a significant challenge, particularly without real-time communication between the two systems. This study presents a dual-stage tracking system comprising an unmanned ground vehicle (UGV) and a Stewart platform, aimed at dynamically tracking and recovering the UAV. Firstly, an observation algorithm combining Kalman filtering (KF) and curve fitting is designed to estimate and complete the drone’s states and predict its trajectory. Subsequently, a decoupled dual-stage tracking control structure is introduced, integrating two independent controlled subsystems. Specifically, in the UGV controller, the model predictive control (MPC) is employed to enhance dynamic tracking capabilities using absolute kinematics. A motion tracking algorithm based on relative kinematics was developed for the Stewart recovery platform to compensate for UGV tracking errors and improve tracking accuracy. Dynamic recovery simulations and experiments have been conducted to validate the feasibility and effectiveness of the proposed dual-stage tracking system. The results demonstrate the system’s capability to dynamically track and recover the drone without real-time communication in complex environments characterized by detection noise and target trajectory disturbances.</div></div>","PeriodicalId":49842,"journal":{"name":"Mechatronics","volume":"104 ","pages":"Article 103235"},"PeriodicalIF":3.1,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142416527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Gait self-learning control based on reference trajectory generation online for an asymmetric limb rehabilitation exoskeleton 基于参考轨迹在线生成的步态自学习控制,用于非对称肢体康复外骨骼
IF 3.1 3区 计算机科学
Mechatronics Pub Date : 2024-10-09 DOI: 10.1016/j.mechatronics.2024.103262
Qiang Zhang, Qingcong Wu, Bai Chen, Yanghui Zhu
{"title":"Gait self-learning control based on reference trajectory generation online for an asymmetric limb rehabilitation exoskeleton","authors":"Qiang Zhang,&nbsp;Qingcong Wu,&nbsp;Bai Chen,&nbsp;Yanghui Zhu","doi":"10.1016/j.mechatronics.2024.103262","DOIUrl":"10.1016/j.mechatronics.2024.103262","url":null,"abstract":"<div><div>Lower limb exoskeleton (LEX) are widely used to assist stoke survivors with walking dysfunction, which is lack of a more flexible trajectory and fails to address the control challenge posed by gait variability and asymmetry in rehabilitation training. This paper introduces an asymmetric self-learning lower exoskeleton (AS-LEX) based on reference trajectory generation for the affected side. Motor intent of the unaffected limb based on thresholds was identified to classify the gait phase of stance and swing. A parameterized gait trajectory was generated online, namely a combination of circular trajectory in the stance phase and an elliptical trajectory in the swing phase. Gait self-learning control is presented to make the affected limb adaptively learn the gait parameters generated by the unaffected limb. Feasibility of the AS-LEX is demonstrated experimentally using three healthy subjects. Resuls demonstrate that overground walking in a more natural speed (with a stride length 600 mm and 700 mm) make subjects more actively learn gait of the affected side from the unaffected side. Additionally, experiments of the fatigue level of the affected limb and human-robot interaction torques were carried out, and the results indicate a more natural gait and reduced interaction forces with the AS-LEX.</div></div>","PeriodicalId":49842,"journal":{"name":"Mechatronics","volume":"104 ","pages":"Article 103262"},"PeriodicalIF":3.1,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142416526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Model-free control for an industrial long-stroke motion system with a nonlinear micropositioning actuator 使用非线性微定位执行器的工业长行程运动系统的无模型控制
IF 3.1 3区 计算机科学
Mechatronics Pub Date : 2024-10-09 DOI: 10.1016/j.mechatronics.2024.103257
Yazan M. Al-Rawashdeh , Mohammad Al Saaideh , Marcel F. Heertjes , Tom Oomen , Mohammad Al Janaideh
{"title":"Model-free control for an industrial long-stroke motion system with a nonlinear micropositioning actuator","authors":"Yazan M. Al-Rawashdeh ,&nbsp;Mohammad Al Saaideh ,&nbsp;Marcel F. Heertjes ,&nbsp;Tom Oomen ,&nbsp;Mohammad Al Janaideh","doi":"10.1016/j.mechatronics.2024.103257","DOIUrl":"10.1016/j.mechatronics.2024.103257","url":null,"abstract":"<div><div>Fine positioning stages based on piezoceramic materials have found widespread success in various applications due to their attractive features. However, the inherent hard nonlinear behavior of piezoelectric actuators complicates modeling, control, and synchronization processes. In this study, adopting an input–output perspective, we propose and experimentally verify a model-free control and synchronization technique for these stages. Specifically, our approach introduces a model-free trajectory generator that adjusts the desired trajectory using position measurement data to minimize tracking errors. We validate this technique using a representative precision motion system, consisting of a planner stage and a uni-axial fine stage, under step-and-scan trajectories commonly employed in wafer scanners. Remarkably, despite its simplicity, the proposed design procedure can be seamlessly extended to other robotics and automation applications.</div></div>","PeriodicalId":49842,"journal":{"name":"Mechatronics","volume":"104 ","pages":"Article 103257"},"PeriodicalIF":3.1,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142416528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimal visual control of tendon-sheath-driven continuum robots with robust Jacobian estimation in confined environments 在密闭环境中通过鲁棒雅各布估计实现腱鞘驱动连续机器人的最佳视觉控制
IF 3.1 3区 计算机科学
Mechatronics Pub Date : 2024-10-03 DOI: 10.1016/j.mechatronics.2024.103260
Chuanchuan Pan , Zhen Deng , Chao Zeng , Bingwei He , Jianwei Zhang
{"title":"Optimal visual control of tendon-sheath-driven continuum robots with robust Jacobian estimation in confined environments","authors":"Chuanchuan Pan ,&nbsp;Zhen Deng ,&nbsp;Chao Zeng ,&nbsp;Bingwei He ,&nbsp;Jianwei Zhang","doi":"10.1016/j.mechatronics.2024.103260","DOIUrl":"10.1016/j.mechatronics.2024.103260","url":null,"abstract":"<div><div>Accurate control of continuum robots in confined environments presents a significant challenge due to the need for a precise kinematic model, which is susceptible to external interference. This paper introduces a model-less optimal visual control (MLOVC) method that enables a tendon-sheath-driven continuum robot (TSDCR) to effectively track visual targets in a confined environment while ensuring stability. The method allows for intraluminal navigation of TSDCRs along narrow lumens. To account for the presence of external outliers, a robust Jacobian estimation method is proposed, wherein improved iterative reweighted least squares with sliding windows are used to online calculate the robot’s Jacobian matrix from sensing data. The estimated Jacobian establishes the motion relationship between the visual feature and the actuation. Furthermore, an optimal visual control method based on quadratic programming (QP) is designed for visual target tracking, while considering the robot’s physical constraint and control constraints. The MLOVC method for visual tracking provides a reliable alternative that does not rely on the precise kinematics of TSDCRs and takes into consideration the impact of outliers. The control stability of the proposed approach is demonstrated through Lyapunov analysis. Simulations and experiments are conducted to evaluate the effectiveness of the MLOVC method, and the results demonstrate that it enhances tracking performance in terms of accuracy and stability.</div></div>","PeriodicalId":49842,"journal":{"name":"Mechatronics","volume":"104 ","pages":"Article 103260"},"PeriodicalIF":3.1,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142416525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Learning to detect slip through tactile estimation of the contact force field and its entropy properties 通过对接触力场及其熵属性的触觉估计学习检测滑移
IF 3.1 3区 计算机科学
Mechatronics Pub Date : 2024-10-01 DOI: 10.1016/j.mechatronics.2024.103258
Xiaohai Hu , Aparajit Venkatesh , Yusen Wan , Guiliang Zheng , Neel Jawale , Navneet Kaur , Xu Chen , Paul Birkmeyer
{"title":"Learning to detect slip through tactile estimation of the contact force field and its entropy properties","authors":"Xiaohai Hu ,&nbsp;Aparajit Venkatesh ,&nbsp;Yusen Wan ,&nbsp;Guiliang Zheng ,&nbsp;Neel Jawale ,&nbsp;Navneet Kaur ,&nbsp;Xu Chen ,&nbsp;Paul Birkmeyer","doi":"10.1016/j.mechatronics.2024.103258","DOIUrl":"10.1016/j.mechatronics.2024.103258","url":null,"abstract":"<div><div>Slip detection during object grasping and manipulation plays a vital role in object handling. Visual feedback can help devise a strategy for grasping. However, for robotic systems to attain a proficiency comparable to humans, integrating artificial tactile sensing is increasingly essential, especially in consistently handling unfamiliar objects. We introduce a novel physics-informed, data-driven approach to detect slip continuously for control-oriented tasks. Our work leverages the inhomogeneity of tactile sensor readings during slip events to develop distinct features and formulates slip detection as a classification problem. We test multiple data-driven models on 10 common objects under different loading conditions, textures, and materials to evaluate our approach. The resulting best classification algorithm achieves a high average accuracy of 95.61%. Practical application in dynamic robotic manipulation demonstrates the effectiveness of the proposed real-time slip detection and prevention.</div></div>","PeriodicalId":49842,"journal":{"name":"Mechatronics","volume":"104 ","pages":"Article 103258"},"PeriodicalIF":3.1,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142416524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Magnetic equivalent circuit modeling of a permanent magnet linear synchronous motor composed of curved segments 由曲线段组成的永磁直线同步电机的磁等效电路建模
IF 3.1 3区 计算机科学
Mechatronics Pub Date : 2024-09-30 DOI: 10.1016/j.mechatronics.2024.103256
Gerd Fuchs , Andreas Kugi , Wolfgang Kemmetmüller
{"title":"Magnetic equivalent circuit modeling of a permanent magnet linear synchronous motor composed of curved segments","authors":"Gerd Fuchs ,&nbsp;Andreas Kugi ,&nbsp;Wolfgang Kemmetmüller","doi":"10.1016/j.mechatronics.2024.103256","DOIUrl":"10.1016/j.mechatronics.2024.103256","url":null,"abstract":"<div><div>This paper advances magnetic equivalent circuit (MEC) modeling for permanent magnet linear synchronous motors (PMLSMs) with arbitrarily curved segments. As PMLSMs are increasingly utilized in industrial applications, accurate and computationally efficient modeling techniques are paramount. This research proposes a novel approach that meets these requirements and paves the way for real-time model-based control, observers, and estimation strategies. Existing MEC models for PMLSMs primarily consider straight stator segments, neglecting the impact of the curvature of curved segments commonly used in modern PMLSM designs. The approach proposed in this paper systematically incorporates these effects into the MEC model for PMLSMs to address this limitation. As demonstrated by several validation experiments, a calibration concept based on measurements further enhances the model’s accuracy. Finally, a method for efficiently implementing the proposed MEC model for a whole PMLSM setup significantly reduces the computation time compared to the standard implementation.</div></div>","PeriodicalId":49842,"journal":{"name":"Mechatronics","volume":"104 ","pages":"Article 103256"},"PeriodicalIF":3.1,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142358146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Understanding friction and superelasticity in tendon-driven continuum robots 了解肌腱驱动连续机器人中的摩擦和超弹性
IF 3.1 3区 计算机科学
Mechatronics Pub Date : 2024-09-05 DOI: 10.1016/j.mechatronics.2024.103241
Luca Raimondi, Matteo Russo, Xin Dong, Dragos Axinte
{"title":"Understanding friction and superelasticity in tendon-driven continuum robots","authors":"Luca Raimondi,&nbsp;Matteo Russo,&nbsp;Xin Dong,&nbsp;Dragos Axinte","doi":"10.1016/j.mechatronics.2024.103241","DOIUrl":"10.1016/j.mechatronics.2024.103241","url":null,"abstract":"<div><p>Tendon-driven continuum robots are conventionally modeled with either discrete or differential representations of their shapes, which neglect the physical design of the robot itself. As each segment of these robotic systems is usually realized by alternating compliant elements and rigid disks for tendon routing, these discontinuities cause non-negligible position and orientation errors. Although the factors that cause these curvature errors have often been identified in the mechanical behavior of the compliant element (usually made of superelastic alloys), tendon routing, and friction, no study available in the open literature gives a satisfactory explanation of these phenomena. In this article, a Finite Element (FE) model is proposed in conjunction with a bottom-up approach to study the physical behavior of this class of robots and ultimately to quantify the impact of these factors on the shape of a tendon-driven continuum robot. The model proved capable of approximating the experimental data with good accuracy, showing an average percentage error of 0.80% and a peak percentage error at the maximum curvature of the continuum robot of 1.30%, significantly smaller than the average error of 4.1% and peak error of 13.86% obtained with a conventional model.</p></div>","PeriodicalId":49842,"journal":{"name":"Mechatronics","volume":"104 ","pages":"Article 103241"},"PeriodicalIF":3.1,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0957415824001065/pdfft?md5=7183d1ac1de5f156425285c5e712bf58&pid=1-s2.0-S0957415824001065-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142151828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
FalconScan: A hybrid UAV-crawler system for NDT inspection of elevated pipes in industrial plants FalconScan:用于工业厂房高架管道无损检测的无人机-爬虫混合系统
IF 3.1 3区 计算机科学
Mechatronics Pub Date : 2024-08-30 DOI: 10.1016/j.mechatronics.2024.103239
Fadl Abdellatif , Ali J. Alrasheed , Amjad Felemban , Ahmed Al Brahim , Hesham Jifri , Mohamed Abdelkader , Shehab Ahmed , Jeff S. Shamma
{"title":"FalconScan: A hybrid UAV-crawler system for NDT inspection of elevated pipes in industrial plants","authors":"Fadl Abdellatif ,&nbsp;Ali J. Alrasheed ,&nbsp;Amjad Felemban ,&nbsp;Ahmed Al Brahim ,&nbsp;Hesham Jifri ,&nbsp;Mohamed Abdelkader ,&nbsp;Shehab Ahmed ,&nbsp;Jeff S. Shamma","doi":"10.1016/j.mechatronics.2024.103239","DOIUrl":"10.1016/j.mechatronics.2024.103239","url":null,"abstract":"<div><p>Periodic non-destructive testing (NDT) of pipes and tanks is vital in industrial plants, such as Oil &amp; Gas facilities, to proactively detect defects and corrosion before leaks and forced shutdowns occur. This paper presents a hybrid system, consisting of a UAV and a crawler, which enables detailed contact-based inspection of elevated pipes, in pursuit of eliminating the need for dangerous scaffolding and manual inspection to improve safety and reduce cost. Similar to avian animals, the UAV autonomously perches on the pipe to conserve energy. A small inspection crawling robot is carried by the UAV, and is subsequently released onto the pipe’s surface to inspect its health. The crawler uses magnetic wheels for agile mobility and houses an ultrasonic testing (UT) sensor to thoroughly scan the pipe and detect wall thinning, which is a precursor for leaks. Finally, the crawler re-docks with the UAV, which in turn detaches from the pipe to fly back home or inspect another pipe. The multi-robot system is designed for and tested on pipe diameters as small as 8 in.</p></div>","PeriodicalId":49842,"journal":{"name":"Mechatronics","volume":"103 ","pages":"Article 103239"},"PeriodicalIF":3.1,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142094899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A robust design of time-varying internal model principle-based control for ultra-precision tracking in a direct-drive servo stage 基于时变内部模型原理的稳健控制设计,用于直接驱动伺服平台的超精确跟踪
IF 3.1 3区 计算机科学
Mechatronics Pub Date : 2024-08-28 DOI: 10.1016/j.mechatronics.2024.103249
Yue Cao, Zhen Zhang
{"title":"A robust design of time-varying internal model principle-based control for ultra-precision tracking in a direct-drive servo stage","authors":"Yue Cao,&nbsp;Zhen Zhang","doi":"10.1016/j.mechatronics.2024.103249","DOIUrl":"10.1016/j.mechatronics.2024.103249","url":null,"abstract":"<div><p>This paper proposes a robust design of the time-varying internal model principle-based control (TV-IMPC) for tracking sophisticated references generated by linear time-varying (LTV) autonomous systems. The existing TV-IMPC design usually requires a complete knowledge of the plant I/O (input/output) model, leading to the lack of structural robustness. To tackle this issue, we, in this paper, design a gray-box extended state observer (ESO) to estimate and compensate unknown model uncertainties and external disturbances. By means of the ESO feedback, the plant model is kept as nominal, and hence the structural robustness is achieved for the time-varying internal model. It is shown that the proposed design has bounded ESO estimation errors, which can be further adjusted by modifying the corresponding control gains. To stabilize the ESO-based TV-IMPC, a time-varying stabilizer is developed by employing Linear Matrix Inequalities (LMIs). Extensive simulation and experimental studies are conducted on a direct-drive servo stage to validate the proposed robust TV-IMPC with ultra-precision tracking performance (<span><math><mrow><mo>∼</mo><mn>60</mn><mspace></mspace><mi>nm</mi></mrow></math></span> RMSE out of <span><math><mrow><mo>±</mo><mn>80</mn><mspace></mspace><mi>mm</mi></mrow></math></span> stroke).</p></div>","PeriodicalId":49842,"journal":{"name":"Mechatronics","volume":"103 ","pages":"Article 103249"},"PeriodicalIF":3.1,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142088297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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