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基于西门子PLC的自动化装配联轴器的系统设计

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北京工业职业技术学院学报 2024年第2期23卷 7-12页

作者：魏洪旭李淼黄欢江苏汇博机器人技术股份有限公司江苏苏州215000 北京工业职业技术学院机电工程学院北京100042

随着工业自动化的不断发展,可编程逻辑控制器在自动化装配系统中的应用越来越广泛。基于目前新能源汽车企业自动化装配联轴器生产的需要,采用西门子1200PLC联合法奥机器人、康耐视Insight2000智能工业相机以及MCGS昆仑通泰触摸屏设计一... 详细信息

随着工业自动化的不断发展,可编程逻辑控制器在自动化装配系统中的应用越来越广泛。基于目前新能源汽车企业自动化装配联轴器生产的需要,采用西门子1200PLC联合法奥机器人、康耐视Insight2000智能工业相机以及MCGS昆仑通泰触摸屏设计一款自动化联轴器装配系统。实验证明:该系统性能良好,操作简单,功能完善,能够有效提高装配效率和产品质量。

关键词：法奥机器人西门子PLC 装配联轴器系统设计

Geographical distribution of Aralia elata characteristics correlated with topography and forest structure in Heilongjiang and Jilin Provinces,Northeast China

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Journal of Forestry Research 2021年第3期32卷 1115-1125页

作者： hongxu wei Guoshuang Chen Xin Chen Hengtian Zhao Research Group of Urban Forests and Urban Wetlands Northeast Institute of Geography and AgroecologyChinese Academy of SciencesChangchun 130102People’s Republic of China Research Group of Understory Plants Resources Northeast Institute of Geography and Agroecology(Harbin)Chinese Academy of SciencesHarbin 150081People’s Republic of China

The Araliaceae family consists of numerous species of medical plants of significant value as non-wood forest *** conserve and culture these plants in natural forest stands is an important undertaking which should be implemented according to the relationship between forest structure and understory *** this study,thirtyfive plots were established in natural A ralia elata *** individual and denser populations were found in the northern and in the eastern regions,*** population densities and individual leaf weight increased along *** contrast,their relationship with elevation and DBH were *** with the altitude gradient,both height and root-collar diameter increased but population density ***-collar diameter and population density decreased with latitude and DBH,***,dominant trees unlikely enforced strong disturbance to the development of understory *** populations unless concerning some specific topographic factors.

关键词： Aralia elata Chinese angelica-tree Stand quality Geographical distribution Undergrowth Nontimber forest species

振动分析在液压挖掘机安全护栏上的应用与研究

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工程机械 2024年第3期55卷 20-25,I0011,I0012页

作者：魏洪旭王运来李勋任长伟小松(中国)投资有限公司济宁分公司小松机械制造(山东)有限公司

挖掘机作业时,在发动机振动、物料冲击及行走颠簸等的作用下,车体会发生振动,有可能与车体上的部品发生共振,从而导致该部品出现早期失效或疲劳破坏,对作业施工及安全性产生影响。以挖掘机安全护栏为研究对象,应用Creo Simulation对其... 详细信息

挖掘机作业时,在发动机振动、物料冲击及行走颠簸等的作用下,车体会发生振动,有可能与车体上的部品发生共振,从而导致该部品出现早期失效或疲劳破坏,对作业施工及安全性产生影响。以挖掘机安全护栏为研究对象,应用Creo Simulation对其固有频率进行解析,研究其结构、质量及约束方式等对固有频率的影响并进行优化设计,提高其固有频率值,避免了因共振现象的发生而导致的早期疲劳开裂。

关键词：振动共振疲劳破坏固有频率 Creo Simulation

Interactive effects of irrigation and exponential fertilization on nutritional characteristics in Populus 3 euramericana cv. ‘74/76' cuttings in an open-air nursery in Beijing, China

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Journal of Forestry Research 2016年第3期27卷 569-582页

作者： Zi Wang Luyi Ma Zhongkui Jia hongxu wei Jie Duan College of Forestry Henan University of Science and Technology Luoyang 471003 Henan China National Energy R&D Center for Non-Food Biomass Beijing Forestry University Beijing 100083 China Northeast Institute of Geography and Agroecology Chinese Academy of Sciences Changchun 130102 China

Nutritional characteristics determine tree stock quality to a considerable extent. Exponential fertilization can induce nutrient reserves within juvenile trees, but its validity on poplar is contingent on interaction with a scientific irrigation regime due to limited water resources under global warming. In the present study, we raised 3200 Populus 9 euramericana cv. ＇74/76＇ cuttings under four irrigation regimes of 0（I0）, 60 %（I60）, 80 %（I80）, and100 %（I100） of field capacity for soil moisture content with or without（control） the employment of nitrogen（N） addition delivered as exponential fertilization at the rate of 8 g N cutting^（-1）（E8） in an open-air nursery in Beijing, China. Both height and diameter increased with the increment of soil moisture ratio or in response to exponential fertilization（EF） without any interactive effects. In general, concentrations of N, phosphorus（P）,and potassium（K） declined with time in stem but foliar N concentration did not change. Under the I100 regime, EF increased foliar N concentration relative to the control but failed to affect N concentration in stem in September, when both N concentration and N content were increased by EF under the I80 regime. Stem-K content and concentration by EF under the I80 regime also increased in September,therefore EF-treated cuttings had a higher ratio of K content in stem to that in whole plant（%ANAR）. Vector diagnosis for nutritional status indicated that EF resulted in dilution of K concentration but induced a steady-state P uptake in leaves under all irrigation regimes. Therefore, EF of N addition could promote N uptake to leaves of P. 9 euramericana cv. ＇74/76＇ cuttings, but it had a null effect on N and P reserves in stem and impaired K *** conclusion, the irrigation regime of 80 % field capacity of soil moisture content was suggested for the culture of juvenile P. 9 euramericana cv. ＇74/76＇ cuttings. As the interactive meaning, EF was also suggested for its excellent promotion on

关键词： Poplar - Nitrogen Phosphorus Potassium Nutrient loading Vector diagnosis

Effect of Short-term Forest Bathing in Urban Parks on Perceived Anxiety of Young-adults: A Pilot Study in Guiyang, Southwest China

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Chinese Geographical Science 2019年第1期29卷 139-150页

作者： ZHOU Changwei YAN Lingbin YU Lifei wei hongxu GUAN Haoming SHANG Chongfei CHEN Feiyu BAO Junzhou College of Life Science Guizhou University Northeast Institute of Geography and Agricultural Ecology Chinese Academy of Sciences

Forest can be taken as a natural therapy to alleviate perceived anxiety of visitors. Given the geographical difference between urban and rural forest environments, little is known about the urban forest therapy effect of anxiety alleviation with reference to the rural forest. In this study, forty-three university students(aged from 19 to 23) were recruited as participants to visit the forest parks at urban and rural areas of Guiyang City on 21 and 23 December 2016. The forest experience was separated by four sceneries. Participants were asked to complete questionnaires by self-evaluating specific anxiety change from 12 questions with scores from 1 to 10 at both entrance and exit of the parks. The Wilcoxon signed-rank test and paired t-test were used to compare the change of anti-anxiety scores during forest bathing and between urban and rural forests, respectively. Results revealed that forest bathing in the urban park can alleviate the anxiety from financial state(P = 0.0028), exam-pass pressure(P = 0.0040) and love-affair relationship(P = 0.0286). Although rural forest bathing can also alleviate the anxiety from financial state(P = 0.0222), meanwhile, it maintained the anxiety about campus life(P < 0.0001). Forest tree richness tended to be higher in the rural forest park than in the urban one, which in contrast decreased the anxiety alleviation from inter-communication in the rural forest park(P = 0.0487). Principle component analysis indicated that participants tended to perceive more decline of anxiety from social contact in the urban forest. In conclusion, university students were recommended to pay a short visit to the urban forest with partners if they felt anxious about personal affairs and felt necessary to talk with others. For general people's visiting, urban forest trees can be controlled in diversity to some extent to look orderly and alleviate perceived anxiety.

关键词： urbanization tension mental disease behavior disorder undergraduate well-being

New insights in nano-copper chromite catalyzing ultrafine AP:Evaluation of dispersity and mixing uniformity

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Defence Technology（防务技术） 2024年第2期32卷 120-133页

作者： Yong Kou Peng Luo Lei Xiao Yanping Xin Guangpu Zhang Yubing Hu Junqing Yang hongxu Gao Fengqi Zhao wei Jiang Gazi Hao National Special Superfine Powder Engineering Research Center of China School of Chemistry and Chemical EngineeringNanjing University of Science and TechnologyNanjing210094China Xi'an North Huian Chemical Industry Co.Ltd Xi'an710302China Xi'an Modern Chemistry Research Institute Xi'an710065China

Improving the application of nanomaterials has always been a research hotspot in the field of energetic materials(EMs)due to their obvious catalytic effect on the EMs,especially the uniformly dispersed ***,few studies have reported the dispersion of *** this study,the dispersity and mixing uniformity of nano-CuCr_(2)O_(4)was evaluated based on the difference of solid UV light absorption between the nano-catalytic materials and *** nano-CuCr_(2)O_(4)/ultrafine AP composites with different dispersity of nano-CuCr_(2)O_(4)were prepared by manual grinding and mechanical grinding with different grinding strength and griding *** then,the absorbance of different samples at 212 nm was obtained by solid UV testing due to the high repeatability of the absorbance at 210-214 nm for three parallel experiments,and the dispersity of different samples was calculated through the established difference ***,the samples were characterized by XRD,IR,SEM,EDS,DSC and TG-MS,which confirmed that different mixing methods did not change the structure of the samples(XRD and IR),and the mixing uniformity improved with the increase of grinding strength and grinding time(SEM and EDS).The scientificity and feasibility of the difference equation were further verified by *** dispersity of nano-CuCr_(2)O_(4)exhibits a positive intrinsic relationship with its catalytic performance,and the uniformly dispersed nano-CuCr_(2)O_(4)significantly reduces the thermal decomposition temperature of ultrafine AP from 367.7 to 338.8℃.The TG-MS patterns show that the dispersed nano-CuCr_(2)O_(4)advanced the thermal decomposition process of ultrafine AP by about 700 s,especially in the high temperature decomposition stage,and the more concentrated energy release characteristic is beneficial to further enhance the energy performance of AP-based *** above conclusions show that the evaluation method of dispersity based on solid UV curves could pro

关键词： Nano-CuCr_(2)O_(4) Ultrafine AP Dispersity UVeVis diffuse reflectance spectroscopy Thermal decomposition

Can forest bathing in spring enhance the positive psychological response of university students: A pilot study in Northeast China

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林业与环境科学 2018年第4期34卷 123-130页

作者： wei hongxu Wang Dan He Xingyuan Ren Zhibin An Baiyi Northeast Institute of Geography and Agroecology Chinese Academy of SciencesChangchunJilin 130102P.R.China College of Horticulture Jilin Agricultural UniversityChangchunJilin 130118P.R.China University of Chinese Academy of Sciences Beijing 100049P.R.China

Forest bathing is well known to be beneficial of the visitors’psychological changes with better emotion and *** understanding about the psychological change of university students in response to forest bathing is mainly obtained by the profile of mood states(POMS)method:a psychological rating scale to assess the transient and distinct mood *** some other studies explored to use a new questionnaire to assess the psychological change of university students in the urban park,more detailed information is *** this study,23 university students(12 female;aged 20-23)were recruited to walk for 3.5 hours in Nanhu forest park,Changchun,China on 22 and 23 May 2018,when they were arranged to walk in an urban routine *** was found that these students instantiated more positive emotion in the urban *** positive psychological changes were accompanied by improved perception about personal details and school *** contrast,participants walking in the urban environment did not feel any psychological ***,forest bathing can be taken as an active way to stimulate more positive psychological changes compared to the urban ***,as a pioneer project,this study suggests more studies by designing more specific questions about social contact affairs for university students’forest bathing.

关键词： Forest therapy Human being Well-being stress Anthropogenic activities City

Exploring the hygroscopic behavior of highly energetic oxidizer ammonium dinitramide(ADN)at different temperatures and humidities using an innovative hygroscopic modeling

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Defence Technology（防务技术） 2024年第10期40卷 25-34页

作者： Qiangqiang Lu Ben Liu Zhifang Xie Yiwen Hu Hongyu Yang Junqing Yang Lei Xiao Fengqi Zhao hongxu Gao wei Jiang Gazi Hao National Special Superfine Powder Engineering Research Center of China School of Chemistry and Chemical EngineeringNanjing University of Science and TechnologyNanjing 210094China Xi'an Modern Chemistry Research Institute Xi'an 710065China Shanxi Northern Xingan Chemical Industrial Co. Ltd.Taiyuan 030008China

Ammonium dinitramide(ADN)is a new type of green energetic oxidizer with excellent energy density and low pollution combustion ***,the strong hygroscopicity has a significant impact on its practical *** assist in the research on moisture-proof modification of ADN materials,an innovative hygroscopic modeling approach was proposed to evaluate the hygroscopicity of ADN at various temperatures and *** investigating the diffusion coefficient of water molecules in molecular dynamics processes,a visual insight into the hygroscopic process of ADN was ***,analyzing the non-covalent interactions between ADN and water molecules,the hygroscopicity of ADN could be evaluated qualitatively and *** energy analysis revealed that electrostatic forces play a dominant role in the process of water adsorption by ADN,whereas van der Waals forces impede *** a whole,the simulation results show that ADN presents the following hygroscopic law:At temperatures ranging from 273 K to 373 K and relative humidity(RH)from 10%to 100%,the hygroscopicity of ADN generally shows an increasing trend with the rise in temperature and humidity based on the results of three *** to the non-hygroscopic point(298 K,52%RH)of ADN obtained by experiment in the literature,a non-hygroscopic range of temperature and humidity for ADN can be depicted when the simulation results in relative hygroscopicity is less than or equal to 17%.This study can provide effective strategies for screening anti-hygroscopic modified materials of ADN.

关键词： Ammonium dinitramide Molecular dynamics Hygroscopicity Diffusion coefficient Noncovalent interactions

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基于双五次多项式的智能汽车换道轨迹规划

汽车工程 2021年第7期43卷 978-986,1004页

作者：牛国臣李文帅魏洪旭中国民航大学机器人研究所天津300300

为满足智能汽车换道过程中安全性和舒适性的要求,提出了一种基于双五次多项式的智能汽车换道轨迹规划算法。以动态规划换道时间和增加舒适性约束条件来改进五次多项式规划算法,在该基础上结合当前环境和换道始末状态计算出中转状态,并... 详细信息

为满足智能汽车换道过程中安全性和舒适性的要求,提出了一种基于双五次多项式的智能汽车换道轨迹规划算法。以动态规划换道时间和增加舒适性约束条件来改进五次多项式规划算法,在该基础上结合当前环境和换道始末状态计算出中转状态,并采用两次改进的五次多项式算法避免与前方车辆碰撞。轨迹规划与轨迹跟踪的仿真和试验结果表明,对于不同的工况,本文中提出的双五次换道轨迹规划算法在横向速度、加速度、加速度变化率以及算法运行时间等方面都具有优势,得到的轨迹也满足实际状况下的车辆换道要求,安全性得到提升且操纵稳定性良好,证明该算法具有一定的实际应用价值。

关键词：智能汽车换道轨迹规划双五次多项式轨迹跟踪