Measurement最新文献_第9页

Dynamic behavior of permanent magnet synchronous motor rotor bending fault 永磁同步电机转子弯曲故障的动态特性研究

IF 5.2 2区工程技术

Measurement Pub Date : 2025-06-07 DOI: 10.1016/j.measurement.2025.118123

Fengchao Huang , Changzheng Chen , Xianming Sun , Zhengqi Wang , Hao Fu

{"title":"Dynamic behavior of permanent magnet synchronous motor rotor bending fault","authors":"Fengchao Huang , Changzheng Chen , Xianming Sun , Zhengqi Wang , Hao Fu","doi":"10.1016/j.measurement.2025.118123","DOIUrl":"10.1016/j.measurement.2025.118123","url":null,"abstract":"<div><div>Permanent Magnet Synchronous Motors (PMSMs) are increasingly utilized across various applications due to their high energy efficiency, power density, and precision. The research on the vibration characteristics associated with rotor bending eccentricity faults in PMSMs presents complexities in modeling; consequently, relevant findings in this area are limited. This paper investigates the effects of two fault conditions (Case1: misalignment of bearing inner ring tilt angle and rotor bending coupling fault, Case2: healthy bearing but rotor bending fault) on system vibration using the finite element method. This paper presents a model for the time-varying rotor center position, incorporating a mixed eccentricity unbalanced magnetic pull (UMP) model alongside a dynamic misalignment angle restoring force model for the bearing’s inner ring. Based on these components, a finite element dynamics model for the rotor-bearing system has been established. The Newmark-β method is employed to solve the multi-degree-of-freedom dynamic equations, enabling the acquisition of the vibration response of the motor rotor bending fault system. Furthermore, a comparative analysis of the dynamic responses for Case1 and Case2 is performed. Research indicates that as fault intensity increases, the amplitude of the frequency-doubled component rises significantly. Furthermore, bearing misalignment faults notably enhances the restoring force of the bearings. This enhancement, which in turn increases the support stiffness and effectively dampens the vibrations of the rotor in the normal direction. These findings hold significant value for fault diagnosis and the development of these systems.</div></div>","PeriodicalId":18349,"journal":{"name":"Measurement","volume":"256 ","pages":"Article 118123"},"PeriodicalIF":5.2,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144262006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Automatic phase aberration compensation for digital holographic microscopy by alternating weighted least squares fitting 交替加权最小二乘拟合的数字全息显微镜相位像差自动补偿

IF 5.2 2区工程技术

Measurement Pub Date : 2025-06-07 DOI: 10.1016/j.measurement.2025.118124

Ying Guan, Wenjing Zhou, Ze Cui

{"title":"Automatic phase aberration compensation for digital holographic microscopy by alternating weighted least squares fitting","authors":"Ying Guan, Wenjing Zhou, Ze Cui","doi":"10.1016/j.measurement.2025.118124","DOIUrl":"10.1016/j.measurement.2025.118124","url":null,"abstract":"<div><div>Digital holographic microscopy (DHM), which is an advanced quantitative phase-imaging technique, can be used to acquire amplitude and phase information from samples with high resolution and without the need for labeling. However, phase aberrations within the optical system significantly affect the accuracy of the quantitative phase imaging in DHM, especially in applications that involve complex samples and dynamic imaging. This paper proposes an automatic phase aberration compensation method based on alternating weighted least squares (AWLS) fitting. The method employs a variable splitting strategy to decompose the phase aberration problem into object and the aberration terms. By incorporating the alternating least squares (LS) method into the variable splitting strategy and utilizing the Tukey biweight function to dynamically adjust the weights in regions with high residuals, the method effectively reduces the influence of noise and outliers on fitting accuracy. Simulation and experimental results showed that the proposed method significantly outperforms traditional methods in terms of the phase aberration compensation accuracy and demonstrates strong adaptability to complex samples.</div></div>","PeriodicalId":18349,"journal":{"name":"Measurement","volume":"256 ","pages":"Article 118124"},"PeriodicalIF":5.2,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144272079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design and analysis of a tunable eccentric bearing block mechanism for vibration control in spur gear systems with angular misalignment error 角对中误差直齿轮系统振动控制的可调偏心轴承座机构设计与分析

IF 5.2 2区工程技术

Measurement Pub Date : 2025-06-07 DOI: 10.1016/j.measurement.2025.118126

Desheng Zou , Liming Wang , Bo Zou , Wennian Yu , Yimin Shao , Mechefske Chris

{"title":"Design and analysis of a tunable eccentric bearing block mechanism for vibration control in spur gear systems with angular misalignment error","authors":"Desheng Zou , Liming Wang , Bo Zou , Wennian Yu , Yimin Shao , Mechefske Chris","doi":"10.1016/j.measurement.2025.118126","DOIUrl":"10.1016/j.measurement.2025.118126","url":null,"abstract":"<div><div>Angular misalignment error is a prevalent issue in gear transmission systems, often leading to adverse effects such as uneven load distribution and the induction of vibrations. Tooth modification methods are commonly utilized to optimize load distribution and mitigate vibrations in gear systems experiencing angular misalignment. However, these methods may exhibit degradation when gear systems operate outside the supposed specified range of working conditions. In this paper, we introduce a new tunable eccentric bearing block (TEBB) mechanism specifically designed for vibration control in spur gear system with angular misalignment errors. The spatial position variation of bearing rotation axis, time varying mesh stiffness (TVMS) and contact line length are analyzed with the proposed TEBB and angular misalignment. Subsequently, a 10-degree-of-freedom (DOF) dynamic model of spur gear system is established to investigate the effects of the TEBB on dynamic responses considering angular misalignment. The findings reveal that the proposed TEBB offers superior performance in vibration control compared to the traditional tooth crown modification method. Furthermore, a back-to-back experimental setup is constructed to validate the effectiveness of the proposed TEBB. The results demonstrate that the proposed TEBB mechanism is indeed beneficial for vibration control in spur gear system with angular misalignment error.</div></div>","PeriodicalId":18349,"journal":{"name":"Measurement","volume":"256 ","pages":"Article 118126"},"PeriodicalIF":5.2,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144262004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electromagnetic sensing and modeling for cement paste moisture estimation 水泥浆体水分估算的电磁传感与建模

IF 5.2 2区工程技术

Measurement Pub Date : 2025-06-07 DOI: 10.1016/j.measurement.2025.118097

Ruixue Cao , Jie Hu , Yingjie Zhang , Na Zhao , Chonghui Yue

{"title":"Electromagnetic sensing and modeling for cement paste moisture estimation","authors":"Ruixue Cao , Jie Hu , Yingjie Zhang , Na Zhao , Chonghui Yue","doi":"10.1016/j.measurement.2025.118097","DOIUrl":"10.1016/j.measurement.2025.118097","url":null,"abstract":"<div><div>Electromagnetic sensing techniques, such as ground-penetrating radar and imaging radar, are capable of both surface and subsurface sensing of concrete structures, such as bridges, roadways, and tunnels, etc. However, the performance and effectiveness of electromagnetic sensing techniques for concretes highly depend on a fundamental understanding of the material’s dielectric properties as a function of the water-to-cement (w/c) ratio and moisture content. The aim of this paper is to investigate the combined effects of the w/c ratios (0.35, 0.42, 0.45, 0.5, 0.55) and moisture content in cement paste within the frequency range of 1–4.5 GHz. Twelve cement paste specimens were analyzed: six were oven-dried, and six were conditioned at room temperature. The dielectric properties of the twelve specimens were measured in a frequency range of 1–4.5 GHz. Subsequently, the dielectric constants were modeled and discussed. The model was used to estimate the moisture content of the cement paste. The estimated moisture contents were compared with the actual results. The results indicate that for most samples, the estimated results match very well with the actual results. However, with a lower moisture content, the model tends to exhibit a bias toward underestimation.</div></div>","PeriodicalId":18349,"journal":{"name":"Measurement","volume":"256 ","pages":"Article 118097"},"PeriodicalIF":5.2,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144262597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A parameter measurement method for DBD-type ozone generators based on data fitting 基于数据拟合的dbd型臭氧发生器参数测量方法

IF 5.2 2区工程技术

Measurement Pub Date : 2025-06-07 DOI: 10.1016/j.measurement.2025.118127

Xiongmin Tang , Tao Liang , Yiping Zhou , Jie Li , Xuecong Li , Miao Zhang

{"title":"A parameter measurement method for DBD-type ozone generators based on data fitting","authors":"Xiongmin Tang , Tao Liang , Yiping Zhou , Jie Li , Xuecong Li , Miao Zhang","doi":"10.1016/j.measurement.2025.118127","DOIUrl":"10.1016/j.measurement.2025.118127","url":null,"abstract":"<div><div>Due to its strong sterilization and oxidation properties, ozone is widely utilized. Dielectric barrier discharge (DBD) technology is the main method for industrial ozone synthesis. Accurate parameters of DBD-type ozone generators are essential for optimizing the design and improving the stability of DBD-type ozone generators. Generally, the parameters of DBD-type ozone generators are obtained using the Lissajous figure method. After obtaining the Lissajous figures of DBD-type ozone generators, the Lissajous figures are manually fitted into a parallelogram to calculate the equivalent parameters. This method has many disadvantages. For example, the measurement capacitor must be connected to the high-voltage circuit, the results are affected by human factors, and the processing efficiency is low. To address these issues, a method based on data fitting is proposed for obtaining the equivalent parameters of DBD-type ozone generators. A virtual voltage of the measurement capacitor is generated with the current data of DBD-type ozone generators. In order to reduce the influence of data noise, the LOWESS (Locally Weighted Scatterplot Smoothing) algorithm is used to fit the voltage of the virtual measurement capacitor and the voltage of the DBD-type ozone generator. A Lissajous figure is formed with the two voltages and the parameters of DBD-type ozone generators are calculated by the Lissajous figure. Experimental results show that the equivalent parameters of a DBD-type ozone generator are consistent with those from the traditional Lissajous figure method. Besides this, the measurement capacitor connected to the high-voltage circuit is removed in the proposed parameter measurement method.</div></div>","PeriodicalId":18349,"journal":{"name":"Measurement","volume":"256 ","pages":"Article 118127"},"PeriodicalIF":5.2,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144279947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Localizing acoustic sources in non-line-of-sight scenarios using irregular-grid beamforming and first-order edge diffraction 利用不规则网格波束形成和一阶边缘衍射在非视距场景中定位声源

IF 5.2 2区工程技术

Measurement Pub Date : 2025-06-07 DOI: 10.1016/j.measurement.2025.117944

Qingbo Zhai , Libin Du , Zhaojing Su

{"title":"Localizing acoustic sources in non-line-of-sight scenarios using irregular-grid beamforming and first-order edge diffraction","authors":"Qingbo Zhai , Libin Du , Zhaojing Su","doi":"10.1016/j.measurement.2025.117944","DOIUrl":"10.1016/j.measurement.2025.117944","url":null,"abstract":"<div><div>In this work, an algorithm that combines irregular-grid beamforming with first-order edge diffraction is proposed to localize acoustic sources in non-line-of-sight (NLOS) scenarios. The first-order edge diffraction impulse response is computed using the Biot–Tolstoy-Medwin method, which is then incorporated into the beamforming process to modify the steering vector. To improve performance, irregular grids are used to discretize the acoustic imaging area behind obstacles in the NLOS environment, minimizing main lobe deformation in the beamformer output. Simulation results demonstrate that the irregular-grid beamforming method enables precise acoustic source localization in NLOS environments. Unlike regular-grid beamforming, which exhibits significant main lobe deformation as the source position changes, the main lobe of the irregular-grid method remains nearly unaffected. Additionally, in the acoustic imaging area, the proposed algorithm achieves better resolution parallel to the edge of the obstacle compared to the resolution perpendicular to it. Experimental results confirm the validity of the simulation findings.</div></div>","PeriodicalId":18349,"journal":{"name":"Measurement","volume":"256 ","pages":"Article 117944"},"PeriodicalIF":5.2,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144262000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Step corrosion FBG-induced twin reflection spectrum for temperature and strain composite decoupling measurement with adjustment of range and sensitivity 阶梯腐蚀fbg诱导双反射光谱温度应变复合去耦测量与范围和灵敏度的调整

IF 5.2 2区工程技术

Measurement Pub Date : 2025-06-07 DOI: 10.1016/j.measurement.2025.118111

Tianliang Li , Yuhang Wen , Zichun Cao , Yongwen Zhu , Jianhui Hu , Jian Zhang , Kairui Xia , Ao Zhang

{"title":"Step corrosion FBG-induced twin reflection spectrum for temperature and strain composite decoupling measurement with adjustment of range and sensitivity","authors":"Tianliang Li , Yuhang Wen , Zichun Cao , Yongwen Zhu , Jianhui Hu , Jian Zhang , Kairui Xia , Ao Zhang","doi":"10.1016/j.measurement.2025.118111","DOIUrl":"10.1016/j.measurement.2025.118111","url":null,"abstract":"<div><div>This study introduces a novel method for composite temperature-strain sensing, addressing the growing need for large-range, high-sensitivity measurement systems in aeroengine compressor blades. We designed a sensor featuring an adjustable measurement range and sensitivity, incorporating a step corrosion FBG (SCF) and a “Bi”-shaped parallel lever elastic substrate. To improve the accuracy of strain monitoring, we established a six-layer strain transfer model for the SCF, with a suspended grating region and both ends bonded. An algorithm of dynamic adaptive twin-peak locking and extreme learning machine (DATLA-ELM) for twin reflection spectrum demodulation and nonlinear decoupling was proposed, achieving precise peaks identification and dual-parameter separation. The creep resistance and high-temperature performance of different packaging methods, including AB adhesive, tin welding and laser welding, were evaluated. The results show that the laser welding sensor can withstand temperatures up to 625 °C, with a drift ratio of 0.71 % and a drift rate of 0.01 %·h<sup>−1</sup> approximately. Additionally, it offers a measurement range of ±5,000 με and a sensitivity of 11.26 pm/με. By adopting DATLA-ELM, the maximum decoupling deviations for temperature and strain are 3.11 °C and 19.45 με, respectively. These attributes position the developed sensor as an ideal solution for composite strain-temperature sensing in various aerospace applications, underscoring its effectiveness and reliability in challenging operational environments.</div></div>","PeriodicalId":18349,"journal":{"name":"Measurement","volume":"256 ","pages":"Article 118111"},"PeriodicalIF":5.2,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144262599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A study on the optimal control strategy using sliding mode controller for Mecanum-Wheeled omnidirectional mobile robot 轮式全向移动机器人滑模控制器最优控制策略研究

IF 5.2 2区工程技术

Measurement Pub Date : 2025-06-07 DOI: 10.1016/j.measurement.2025.118113

Gia-Khang Nghiem , Thanh-Long Le , Tri Cong Phung , Quoc Hung Dinh

{"title":"A study on the optimal control strategy using sliding mode controller for Mecanum-Wheeled omnidirectional mobile robot","authors":"Gia-Khang Nghiem , Thanh-Long Le , Tri Cong Phung , Quoc Hung Dinh","doi":"10.1016/j.measurement.2025.118113","DOIUrl":"10.1016/j.measurement.2025.118113","url":null,"abstract":"<div><div>In this study, a dynamic model of the Mecanum-Wheeled Omnidirectional Mobile Robot (MWOMR) is developed and controlled using a Sliding Mode Controller (SMC) to determine the optimal control strategy in terms of operational time, trajectory error, and energy consumption. Despite extensive research on Mecanum-wheeled mobile robots, which primarily focuses on developing advanced control methods, the impact of different motion strategies on efficiency and adaptability, originating from the dynamic characteristics of the MWOMR, remains underexplored. Therefore, this study investigates whether pure translational movement or a combination of rotational and translational maneuvers provides superior performance. To achieve this, the SMC, known for its robustness in nonlinear control, is implemented in a MATLAB/Simulink simulation to evaluate various motion strategies. The findings suggest that the most effective strategy for MWOMRs leverages the advantages of omnidirectional wheel characteristics, with minimal maneuvering phases being the optimal strategy for the system. This result offers valuable insights into optimal control methods for real-world applications.</div></div>","PeriodicalId":18349,"journal":{"name":"Measurement","volume":"255 ","pages":"Article 118113"},"PeriodicalIF":5.2,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144240092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Flex-DD: Deep denoising model with flexible priors for sparse-view CT reconstruction Flex-DD：用于稀疏视图CT重建的柔性先验深度去噪模型

IF 5.2 2区工程技术

Measurement Pub Date : 2025-06-07 DOI: 10.1016/j.measurement.2025.118121

Yunyi Li , Huijuan Wu , Zhengdan Li , Weihao Dai , Chen Ye

{"title":"Flex-DD: Deep denoising model with flexible priors for sparse-view CT reconstruction","authors":"Yunyi Li , Huijuan Wu , Zhengdan Li , Weihao Dai , Chen Ye","doi":"10.1016/j.measurement.2025.118121","DOIUrl":"10.1016/j.measurement.2025.118121","url":null,"abstract":"<div><div>Sparse-view Computed Tomography (SVCT) can effectively reduce radiation risk and improve scan-imaging speed. However, the severe streak artifacts will degrade the reconstruction results. Traditional iterative reconstruction methods rely on appropriate prior knowledge for achieving satisfactory results, while supervised deep learning techniques require large-scale paired training data that is challenging in practical CT application. In this paper, we propose a novel deep denoising model for SVCT reconstruction, which can jointly exploit deep prior and flexible hand-crafted prior. Specifically, we develop an ADMM algorithm for the optimization of Flex-DD. Moreover, we introduce a novel mechanism for flexible incorporation of Flex-DD model into the SVCT reconstruction task via HQS optimization framework, which significantly improves the reconstruction performance with good convergence. Extensive experiments on both simulated ellipses images and human CT images have demonstrated that our proposed method can achieves promising results in both qualitative and visual evaluations compared to popular state-of-the-art methods.</div></div>","PeriodicalId":18349,"journal":{"name":"Measurement","volume":"256 ","pages":"Article 118121"},"PeriodicalIF":5.2,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144272188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improvements of the calibration of the electronic level and by a new multiple reflections technique-based setup 改进了电子电平的标定，并采用了一种新的基于多重反射技术的装置

IF 5.2 2区工程技术

Measurement Pub Date : 2025-06-07 DOI: 10.1016/j.measurement.2025.118115

M. Arif Sanjid

{"title":"Improvements of the calibration of the electronic level and by a new multiple reflections technique-based setup","authors":"M. Arif Sanjid","doi":"10.1016/j.measurement.2025.118115","DOIUrl":"10.1016/j.measurement.2025.118115","url":null,"abstract":"<div><div>Dimensional measuring machines in the National Metrology Institute require accurate levelling on a surface plate during installation for the optimal performance. Nowadays, the commercially available electronic inclinometers having an accuracy and precision of the order of a micro-radian serve the purpose. Therefore, their calibration became essential. This work attempted to establish authentic practices to calibrate electronic levels using various measuring instruments. Different experiments are performed using a reference autocollimator, an angle measuring laser interferometer, and a novel setup. Various errors involved in each of the calibration system are explored. The results obtained in the experiments are mathematically modelled. Then, their associated uncertainty of the measurement is calculated.</div><div>A new measurement algorithm is devised to improve the results by reducing errors due to misalignment. A novel experimental setup is developed by implementing the multiple reflection technique for the calibration of the electronic level. The calibration results of the electronic level are improved by 20 % by the novel setup.</div></div>","PeriodicalId":18349,"journal":{"name":"Measurement","volume":"256 ","pages":"Article 118115"},"PeriodicalIF":5.2,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144261287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0