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Modeling tactile perceived intensity for vibration from a coin eccentric rotating mass motor

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Science China Technological Sciences 2025年

作者： Yun FANG jingchen HUANG Yujun WU jiaqi dong Weichao guo Xinjun SHENG State Key Laboratory of Mechanical System and Vibration School of Mechanical Engineering Shanghai Jiao Tong University Meta Robotics Institute Shanghai Jiao Tong University

Establishing the relationship between vibrotactile parameters and perceived intensity（PI） is of great significance in the regulation of desired sensations, which contribute to haptic interfaces in practical applications. Coin eccentric rotating mass（ERM） motors are routinely utilized due to their lightweight design and efficient ability to evoke strong tactile sensations. By adjusting input voltages, ERMs can yield different stimuli, but the effects of their physical properties on PI remain ***, we developed the physical model of the ERM-skin system and optimized the parameters affecting PI. Moreover, the relationship between stimulus and perception was derived based on Fechner?s law. Three experiments were conducted on fifteen subjects（ten males and five females, aged 24.40 ± 2.87 years） to identify the vibration parameters and corresponding PI to verify the proposed PI model. ERMs in this study were attached to phantom skin/forearm with slim adhesive tape to minimize the interference. Experiment 1 performed vibration calibration with ERM attached to the skin phantom to simulate the actual configuration. Then, the relative and absolute PI of subjects on specific stimuli were acquired in Experiments 2 and *** fitting reliability of the proposed PI model was evaluated on fifteen subjects with R2of 0.73 ± 0.07 and root mean squared error（RMSE） of 1.35 ± 0.28. Overall, the proposed PI model established the quantitative relationship between stimulus parameters（vibration parameters and physical parameters） and subjective PI, which provided theoretical support for ERM optimization and vibrotactile modulation.

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辽河油田超稠油废水潜流湿地处理系统研究

中国环境科学 2001年第1期21卷 85-88页

作者：籍国东孙铁珩常士俊马学军郭书海中国科学院沈阳应用生态研究所辽宁沈阳110015

首次以经过驯化的芦苇湿地为介质处理超稠油废水.在辽河油田进行的中试研究表明,即使超稠油废水的BOD5/COD仅为0.06,潜流湿地系统也具有很好的净化效果,当系统的水力负荷为2cm/d时,主要污染物的去除率为石油类91.83%,COD 83.16%,BOD5 90... 详细信息

首次以经过驯化的芦苇湿地为介质处理超稠油废水.在辽河油田进行的中试研究表明,即使超稠油废水的BOD5/COD仅为0.06,潜流湿地系统也具有很好的净化效果,当系统的水力负荷为2cm/d时,主要污染物的去除率为石油类91.83%,COD 83.16%,BOD5 90.66%,TN 89.37%;出水平均浓度为:石油类 2.26mg/L,COD 77.34mg/L,BOD5 3.13mg/L,TN 1.66mg/L.中试研究还表明,该系统出水水质稳定、耐冲击负荷强,是一种经济有效的超稠油废水处理新技术.对系统内外芦苇的生长量、纤维素、木质素、戊糖及纤维素的长宽比的研究表明,超稠油废水对芦苇材质无明显影响,可回收用于造纸等.

关键词：潜流湿地采油废水难降解污染物辽河油田稠油油田废水处理

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盐腔内回填碱渣沉降固结特性室内试验研究

岩土力学 2014年第2期35卷 407-412页

作者：冀国栋杨春和徐玉龙宗显雷左江江重庆大学西南资源开发及环境灾害控制工程教育部重点实验室重庆400044 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室武汉430071

碱渣回填到充满卤水的废弃盐腔后,颗粒会自由沉降到盐腔底部形成沉积层,进而在自重作用下固结。为了解盐腔内回填碱渣的沉降固结特性,以江苏淮安地区碱渣为对象,进行了沉降柱试验和固结试验。试验结果表明:(1)碱渣在卤水中的沉降过程可... 详细信息

碱渣回填到充满卤水的废弃盐腔后,颗粒会自由沉降到盐腔底部形成沉积层,进而在自重作用下固结。为了解盐腔内回填碱渣的沉降固结特性,以江苏淮安地区碱渣为对象,进行了沉降柱试验和固结试验。试验结果表明:(1)碱渣在卤水中的沉降过程可以分为3个阶段:絮凝阶段、沉降阶段和固结阶段。初始浓度对碱渣的沉降曲线和沉降速率有很大的影响。(2)碱渣颗粒分布、密度、含水率和孔隙比均呈现出分层特性,颗粒粒径、密度随深度的增加而增大,含水率、孔隙比随深度的增大而减小。(3)碱渣具有很高的压缩性,压缩系数a1-2为3.36 MPa-1。在压力范围小于100 kPa下,固结系数随固结压力的增加而显著减小。试验结果对了解盐腔内回填碱渣的沉降固结特性提供了参考,有利于指导回填施工工艺和碱渣的后期处理。

关键词：盐腔回填碱渣沉降固结沉降柱试验

Formation and evolution of supercritical geofluid

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Science China Earth Sciences 2025年第1期68卷 39-51页

作者： Huaiwei NI Yilin XIAO Xiaolin XIONG Xiandong LIU Chunxiao GAO Yi-Xiang CHEN Yunguo LI Wan-Cai LI Xuan guo Yang-Yang WANG dong-Bo TAN Li ZHANG State Key Laboratory of Lithospheric and Environmental Coevolution University of Science and Technology of China Deep Space Exploration Laboratory/School of Earth and Space Sciences University of Science and Technology of China Guangzhou Institute of Geochemistry Chinese Academy of Sciences School of Earth Sciences and Engineering Nanjing University State Key Lab of Superhard Materials Jilin University

In this work, we provide a comprehensive review on the formation, evolution, properties, and effects of supercritical geofluid. In Earth's interior, enhanced miscibility between H2O and silicate by the addition of special components or by the increase of pressure and temperature gives rise to supercritical geofluid with a significant amount of both H2O and silicate *** formation of supercritical geofluid in magmatic-hydrothermal systems, typified by pegmatite system, is governed by meltfluid critical curve. The formation of supercritical geofluid in metamorphic systems, typified by subducted slab, is governed by the second critical end point. Experimental results suggest that the presence of boron and fluorine in pegmatite system makes it possible to form supercritical geofluid at crustal depths, but the release of supercritical geofluid from subducted slab is withheld until almost 100 km depth. A major presence of both H2O and depolymerized structural units（monomers, dimers, etc.） endows supercritical geofluid with unique physical properties including low density, low elastic moduli, low viscosity, high diffusivity,and high electrical conductivity. Supercritical geofluid can effectively mobilize a variety of elements even including high field strength elements and heavy rare earth elements. The chemical signatures of supercritical geofluid can be inherited by metasomatized mantle and mantle-derived melts, and this could give an explanation of the oxidation of arc magmas. Phase separation of supercritical geofluid through the mechanism of spinodal decomposition leads to formation of a melt network. Multiphase fluid inclusions recovered from subduction zone rocks and pegmatites are possible relics of supercritical geofluid. Supercritical geofluid can cause electrical anomaly and low seismic velocity near the top of subducted slab, and can be linked with intermediate-focus earthquakes. Supercritical geofluid may have played a crucial role in the formation of pe

关键词： Supercritical geofluid Miscibility Subduction zone Pegmatite

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Research on the deformation mechanism of flexural toppling deep-seated landslides based on large centrifuge physical model testing: A case study of the Genie landslide in the Tibetan Plateau

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Journal of Earth Science 2025年

作者： Shichao Cao Xiujun dong Changbao guo Ruian Wu Zhihua Yang Guang Zheng Xiaoqiang Zhu State Key Laboratory of Geohazard Prevention and Geoenvironment Protection， Chengdu University of Technology Institute of Geomechanics， Chinese Academy of Geological Sciences Key Laboratory of Active Tectonics and Geological Safety， Ministry of Natural Resources

Flexural toppling is a widespread failure mode in natural and excavated anti-inclined rock slopes of the eastern Tibetan Plateau， which can further evolve into large deep-seated landslides， posing significant threats to the construction and operation of important infrastructure. In this study， we took the large deep-seated Genie landslide as a case study and established a centrifuge physical model to analyze the deformation mechanism and evolutionary process of flexural toppling deep-seated landslides under the effect of gravity. The results indicate that the geomechanical mode of landslide instability is characterized by flexural toppling-shearing-sliding， with the deformation process could be divided into three stages: initial slow deformation stage marked by crack generation， rapid deformation stage characterized by the expansion and fracturing of cracks， and a low-speed deformation stage characterized by creep. Notably， the sliding surfaces do not adhere strictly to predefined bending zones but develop cracks along the bending parts， which gradually expand and penetrate deeper， eventually forming multiple potential sliding surfaces. The analysis of the entire process deformation evolution of flexural toppling deep-seated landslides suggests that the rapid deformation stage is the optimal time to take action for landslide prevention and control. The study demonstrates that the shear strength also plays a key factor in the evolution of flexural toppling. The research reveals the deformation mechanism and evolutionary process of large deep-seated landslides in deep-cut canyon areas， providing valuable reference for the prediction， assessment， and prevention of such slopes and landslides.

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农村生活排水多介质生态处理技术模式研究——效果评价篇

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中国农村水利水电 2010年第3期 1-5页

作者：谢崇宝李仰斌张国华籍国东周游中国灌溉排水发展中心北京100054 北京大学环境工程系水沙科学教育部重点实验室北京100871

通过对关键装置的模式集成及示范工程的运行监测,研究评价了多功能折流反应器单一处理模式(HBR)、多功能折流反应器与多介质生态滤池复合模式(HBR-MEF)、多功能折流反应器与多介质生态滤池及多介质毛管渗滤三合一模式(HBR-MEF-MCP)、多... 详细信息

通过对关键装置的模式集成及示范工程的运行监测,研究评价了多功能折流反应器单一处理模式(HBR)、多功能折流反应器与多介质生态滤池复合模式(HBR-MEF)、多功能折流反应器与多介质生态滤池及多介质毛管渗滤三合一模式(HBR-MEF-MCP)、多功能折流反应器与多介质生态滤池及多介质人工湿地三合一模式(HBR-MEF-MCW)等4种处理模式的运行效果,结果表明,HBR-MEF-MCP模式、HBR-MEF-MCW模式、HBR-MEF模式的化学需氧量、氨氮和总磷处理标准达到了《城镇污水处理厂污染物排放标准》(GB 18918-2002)规定的排放标准。

关键词：生态处理模式集成多介质

农村生活排水多介质生态处理技术模式研究——总体布局篇

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中国农村水利水电 2009年第5期 1-3页

作者：李仰斌谢崇宝张国华籍国东周游中国灌溉排水发展中心北京100054 北京大学环境工程系水沙科学教育部重点实验室北京100871

农村生活排水处理工程是不可缺少的重要基础设施,在保证生产、改善人居环境等方面担负着重任。针对我国农村特点,提出了农村生活排水处理的技术需求,开发了农村生活排水多介质生态处理装置多功能折流反应器(HBR)、多介质生态滤池(MEF)... 详细信息

农村生活排水处理工程是不可缺少的重要基础设施,在保证生产、改善人居环境等方面担负着重任。针对我国农村特点,提出了农村生活排水处理的技术需求,开发了农村生活排水多介质生态处理装置多功能折流反应器(HBR)、多介质生态滤池(MEF)、多介质人工湿地(MCW)、多介质毛管渗滤(MCP),集成了HBR、HBR-MEF、HBR-MEF-MCW、HBR-MEF-MCP等多种处理模式,实际应用时可根据用水水质和经济水平要求,具体选择不同的处理模式。

关键词：农村生活排水多介质处理模式

农村生活排水多介质生态处理技术模式研究——关键装置开发篇

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中国农村水利水电 2010年第2期 32-34,37页

作者：李仰斌谢崇宝张国华籍国东周游中国灌溉排水发展中心北京100054 北京大学环境工程系水沙科学教育部重点实验室北京100871

已有污水处理技术应用于农村生活排水处理时,存在终年运行不稳定、易堵塞和除磷脱氮效率低等技术方面的制约瓶颈。为此,从设施的基本组成和设施的技术特点2方面,重点介绍了农村生活排水多介质生态处理装置多功能折流反应器(HBR)、多介... 详细信息

已有污水处理技术应用于农村生活排水处理时,存在终年运行不稳定、易堵塞和除磷脱氮效率低等技术方面的制约瓶颈。为此,从设施的基本组成和设施的技术特点2方面,重点介绍了农村生活排水多介质生态处理装置多功能折流反应器(HBR)、多介质生态滤池(MEF)、多介质毛管渗滤(MCP)、多介质人工湿地(MCW)的开发过程,以期为我国的农村生活排水治理提供技术支撑。

关键词：污水处理多功能折流反应器多介质生态滤池多介质毛管渗虑多介质人工湿地

完全垄断产品市场中企业最优决策模型的动静态图形实现

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石家庄经济学院学报 2006年第5期29卷 601-604页

作者：苏红顺董继国河北师范大学数学与信息科学学院河北石家庄050016

研究经济学原理离不开数学分析方法和数学软件的帮助。利用数学软件Mathcad2001,作出了完全垄断产品市场中企业最优决策模型的静态图形和动态模型演示,强化了曲线、对应点间的联系,通过图形实现了总量分析方法和边际分析方法的统一,结... 详细信息

研究经济学原理离不开数学分析方法和数学软件的帮助。利用数学软件Mathcad2001,作出了完全垄断产品市场中企业最优决策模型的静态图形和动态模型演示,强化了曲线、对应点间的联系,通过图形实现了总量分析方法和边际分析方法的统一,结合作出的图形进行了详尽的经济分析,实现了数学、计算机和经济学理论的完美结合。

关键词： Mathcad2001 完全垄断最优决策图形实现