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基于强化学习的激光导航无人车路径跟踪控制

沈阳工业大学学报 2024年第2期46卷 206-211页

作者：母军臣何洪辉开封大学信息工程学院河南开封475000 河南大学软件学院河南郑州450046

针对智能仓储无人车运动轨迹控制精度的问题,提出了一种基于强化学习的激光导航无人车路径跟踪控制算法。建立了智能仓储无人车的数学模型,设计了一种激光导航定位算法,提出了一种Actor-Critic强化学习路径跟踪算法,最终实现对无人车路... 详细信息

针对智能仓储无人车运动轨迹控制精度的问题,提出了一种基于强化学习的激光导航无人车路径跟踪控制算法。建立了智能仓储无人车的数学模型,设计了一种激光导航定位算法,提出了一种Actor-Critic强化学习路径跟踪算法,最终实现对无人车路径跟踪的高精度控制。通过对比仿真验证了设计的路径跟踪算法具有更优的控制效果和更高的控制精度,最大路径跟踪误差仅为0.3 m,最大x坐标跟踪误差仅为0.1 m,最大y坐标跟踪误差仅为0.29 m,大幅提高了对仓储无人车运动轨迹的跟踪精度。

关键词：智能仓储无人车激光导航路径跟踪定位算法强化学习跟踪控制高精度

考虑车网互动的园区电网动态双层能量管理策略

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上海交通大学学报 2024年第6期58卷 916-925页

作者：邱革非冯泽华沈赋何超何虹辉刘铠铭昆明理工大学电力工程学院昆明650500

为解决大量接入的清洁能源出力波动和充电场内汽车数量的随机变化给电网能量管理带来的困难,提出一种园区电网双层优化控制策略.上层基于模型预测控制技术建立风光储集成动态优化模型,综合应用园区电池储能系统和电动汽车(EV)电池储能... 详细信息

为解决大量接入的清洁能源出力波动和充电场内汽车数量的随机变化给电网能量管理带来的困难,提出一种园区电网双层优化控制策略.上层基于模型预测控制技术建立风光储集成动态优化模型,综合应用园区电池储能系统和电动汽车(EV)电池储能系统参与电网能量平衡.下层则考虑同时满足EV车主对EV的充电需求和上层能量调度的车网互动管理需求,制定园区电网内停车场的EV有序充放电策略.仿真算例验证表明:所提策略能将分散园区各处的EV储能集成为统一虚拟储能,扩展园区电网储能系统,增加可再生分布式电源的消纳与园区电网的经济效益.

关键词：园区电网电动汽车入网电动汽车虚拟储能模型预测控制混合储能系统

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金刚石滚轮轮廓圆度误差在线判别

金刚石与磨料磨具工程 2024年第4期44卷 518-527页

作者：赵华东何鸿辉朱振伟周帅康刘畅郑州大学机械与动力工程学院郑州450001

金刚石滚轮形面的修形技术是制造金刚石滚轮的关键技术之一,常采用金刚石砂轮磨削法对其进行精密修形,修形后的轮廓圆度误差是考量滚轮修形合格与否的重要指标。目前的轮廓圆度检测方法是人工停机取下滚轮并放置于轮廓仪上进行,极大地... 详细信息

金刚石滚轮形面的修形技术是制造金刚石滚轮的关键技术之一,常采用金刚石砂轮磨削法对其进行精密修形,修形后的轮廓圆度误差是考量滚轮修形合格与否的重要指标。目前的轮廓圆度检测方法是人工停机取下滚轮并放置于轮廓仪上进行,极大地增加了滚轮制作的时间和成本。为此,对在五轴加工机床上的金刚石滚轮,沿其轮廓面横向磨削修形时产生的振动信号,提出基于小波包系数和随机森林的在线检测方法并对其轮廓修形状态进行识别,在修形进行状态时的识别准确率为93.3%,具有实际应用价值。

关键词：金刚石滚轮振动信号小波包系数在线识别随机森林

Polarisation optics for biomedical and clinical applications:a review

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Light(Science & Applications) 2021年第11期10卷 2028-2047页

作者： Chao he honghui he Jintao Chang Binguo Chen Hui Ma Martin J.Booth Department of Engineering Science University of OxfordParks RoadOxford OX13PJUK Guangdong Engineering Center of Polarisation Imaging and Sensing Technology Tsinghua Shenzhen International Graduate SchoolTsinghua University518055 ShenzhenChina Institute of Biopharmaceutical and health Engineering Tsinghua Shenzhen International Graduate SchoolTsinghua University518055 ShenzhenChina Department of Physics Tsinghua University100084 BeijingChina Department of Biomedical Engineering Tsinghua University100084 BeijingChina

Many polarisation techniques have been harnessed for decades in biological and clinical research,each based upon measurement of the vectorial properties of light or the vectorial transformations imposed on light by *** advanced vector measurement/sensing techniques,physical interpretation methods,and approaches to analyse biomedically relevant information have been developed and *** this review,we focus mainly on summarising methodologies and applications related to tissue polarimetry,with an emphasis on the adoption of the Stokes-Mueller *** recent breakthroughs,development trends,and potential multimodal uses in conjunction with other techniques are also *** primary goal of the review is to give the reader a general overview in the use of vectorial information that can be obtained by polarisation optics for applications in biomedical and clinical research.

关键词： clinical optics breakthrough

QUANTITATIVE MUELLER MATRIX POLARIMETRY TECHNIQUES FOR BIOLOGICAL TISSUES

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Journal of Innovative Optical health Sciences 2012年第3期5卷 34-40页

作者： honghui he NAN ZENG DONGZHI LI RAN LIAO HUI MA Shenzhen Key Laboratory for Minimal Invasive Medical Technologies Shenzhen 518055 P.R.China Laboratory of Optical Imaging and Sensing Graduate School at Shenzhen Tsinghua UniversityShenzhen 518055P.R.China Department of Physics Tsinghua University Beijing 100084P.R.China

We propose and conduct both the rotating linear polarization imaging(RLPI)and Mueller matrix transformation(MMT)measurements of different biological tissue samples,and testify the capability of the Mueller matrix polarimetry for the anisotropic scattering *** independent parameters extracted from the RLPI and MMT techniques are compared and *** tissue experimental results show that the parameters are closely related to the structural characteristics of the turbid scattering media,including the sizes of the scatterers,the angular distribution and order of alignment of *** results and conclusions in this paper may provide a potential method for the detection of precancerous and early stage cancerous ***,such studies represent the Mueller matrix transformation procedure which results in a set of parameters linking up the Mueller matrix elements to the structural and optical properties of the media.

关键词： Polarization scattering Mueller matrix biological tissues

POLARIZATION IMAGING AND SCATTERING MODEL OF CANCEROUS LIVER TISSUES

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Journal of Innovative Optical health Sciences 2013年第3期6卷 91-98页

作者： DONGZHI LI honghui he NAN ZENG E DU RAN LIAO YONGHONG he HUI MA Shenzhen Key Laboratory for Minimal Invasive Medical Technologies Graduate School at Shenzhen Tsinghua University Shenzhen 518055P.R.China Department of Physics Tsinghua University Beijing 100084P.R.China

We apply diferent polarization imaging techniques for cancerous liver tissues,and compare the relative contrasts for difference polarization imaging(DPI),degree of polarization imaging(DOPI)and rotating linear polarization imaging(RLPI).Experimental results show that a number of polarization imaging parameters are capable of differentiating cancerous cells in isotropic liver *** analyze the contrast mechanism of the cancer:-sensitive polarization imaging parameters,we propose a scattering model cont aining two types of spherical scatterers and carry on Monte Carlo simula tions based on this bi-component *** the experimental and Monte Carlo simulated results show that the RLPI technique can provide a good imaging contrast of cancerous *** bi-component scattering model provides a useful tool to ana-lyze the contrast mechanism of polarization imaging of cancerous tissues.

关键词： Polarization imaging liver cancerous tisues sca tering model Monte Carlo si mul ation

Nanoconfinement-induced water molecules and hydrogen molecules transport behaviors in ball-in-ball structure photocatalysts to improve hydrogen evolution

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Nano Research 2024年第5期17卷 3752-3760页

作者： Ben Chong Baorong Xu he Li honghui Ou Guidong Yang XJTU-Oxford Joint International Research Laboratory of Catalysis School of Chemical Engineering and TechnologyXi’an Jiaotong UniversityXi’an 710049China

The diffusion,adsorption/desorption behaviors of water molecules and hydrogen molecules are of great importance in heterogeneous photocatalytic hydrogen *** the study of structure-property-performance relationships,nanoconfined space provides an ideal platform to promote mass diffusion and transfer due to their extraordinary properties that are different from the bulk ***,we designed and prepared a nanoconfined CdS@SiO_(2)-NH_(2) nanoreactor,whose shell is composed of amino-functionalized silica nanochannels,and encapsulates spherical CdS as a photocatalyst *** and simulated results reveal that the amino-functionalized nanochannels promote water molecules’and hydrogen molecules’directional diffusion and *** molecules are enriched in the nanocavity between the core and the shell,and promote the interfacial photocatalytic *** a result,the maximized water enrichment and minimized hydrogen-occupied active sites enable photocatalyst with optimized mass transfer kinetics and localization electron distribution on the CdS surface,leading to superior hydrogen production performance with activity as high as 37.1 mmol·g^(-1)·h^(-1).

关键词： nanochannels photocatalytic hydrogen evolution mass transfer amino-functionalized CdS

Material flow analysis and global warming potential assessment of an industrial insect-based bioconversion plant using housefly larvae

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Journal of Environmental Sciences 2024年第5期139卷 483-495页

作者： Tao Lu Fan Lü Nanlin Liao honghui Chai Hua Zhang Pinjing he Institute of Waste Treatment and Reclamation Tongji UniversityShanghai 200092China State Key Laboratory of Pollution Control and Source Reuse Tongji UniversityShanghai 200092China Zhejiang Qihe Ecological Technology Co. Ltd.Hangzhou 310052China

The significant increase in the demand for biomass waste treatment after garbage classification has led to housefly larvae treatment becoming an attractive treatment *** can provide a source of protein while treating biomass waste,which means that nutrients can be returned to the natural food ***,the performance of this technology in terms of its environmental impacts is still unclear,particularly with regards to global warming potential(GWP).This study used a life cycle assessment(LCA)approach to assess a housefly larvae treatment plant with a treatment capacity of 50 tons of biomass waste per *** LCA results showed that the 95% confidence intervals for the GWP in summer and winter were determined to be 24.46-32.81 kg CO_(2) equivalent(CO_(2)-eq)/ton biomass waste and5.37-10.08 kg CO_(2)-eq/ton biomass waste,*** greater GWP value in summer is due to the longer ventilation time and higher ventilation intensity in summer,which consumes more *** main GWP contributions are from(1)electricity needs(accounting for 78.6% of emissions in summer and 70.2%in winter)and(2)product substitution by mature housefly larvae and compost(both summer and winter accounting for 96.8% of carbon reduction).

关键词： Biomass waste Musca domestica Housefly larvae Life cycle assessment Global warming potential

Advances in environmental DNA monitoring:standardization,automation,and emerging technologies in aquatic ecosystems

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Science China(Life Sciences) 2024年第7期67卷 1368-1384页

作者： Suxiang Lu honghui Zeng Fan Xiong Meng Yao Shunping he State Key Laboratory of Freshwater Ecology and Biotechnology Institute of HydrobiologyChinese Academy of SciencesWuhan 430072China Institute of Ecology College of Urban and Environmental SciencesPeking UniversityBeijing 100871China School of Life Sciences Peking UniversityBeijing 100871China Institute of Deep Sea Science and Engineering Chinese Academy of SciencesSanyaChina Center for Excellence in Animal Evolution and Genetics Chinese Academy of SciencesKunmingChina

Environmental DNA(eDNA)monitoring,a rapidly advancing technique for assessing biodiversity and ecosystem health,offers a noninvasive approach for detecting and quantifying species from various environmental *** this review,a comprehensive overview of current eDNA collection and detection technologies is provided,emphasizing the necessity for standardization and automation in aquatic ecological ***,the intricacies of water bodies,from streams to the deep sea,and the associated challenges they pose for eDNA capture and analysis are *** paper delineates three primary eDNA survey methods,namely,bringing back water,bringing back filters,and bringing back data,each with specific advantages and constraints in terms of labor,transport,and data ***,innovations in eDNA sampling equipment,including autonomous drones,subsurface samplers,and in-situ filtration devices,and their applications in monitoring diverse taxa are ***,recent advancements in species-specific detection and eDNA metabarcoding are addressed,highlighting the integration of novel techniques such as CRISPR-Cas and nanopore sequencing that enable precise and rapid detection of *** implications of environmental RNA and epigenetic modifications are considered for future applications in providing nuanced ecological ***,the review stresses the critical role of standardization and automation in enhancing data consistency and comparability for robust long-term *** propose that the amalgamation of these technologies represents a paradigm shift in ecological monitoring,aligning with the urgent call for biodiversity conservation and sustainable management of aquatic ecosystems.

关键词： eDNA methodology sampler environment biomonitoring ecogenomic sensors ocean observation instrument