RTCP(rotation tool centre point)检测方法是一种被广泛应用的五轴机床动态控制精度检测方法,目前针对RTCP检测的测量结果可视化方法对误差检测结果信息的展示完整度、误差图像特征明显程度等方面有进一步提升的空间,值得进一步研究改...RTCP(rotation tool centre point)检测方法是一种被广泛应用的五轴机床动态控制精度检测方法,目前针对RTCP检测的测量结果可视化方法对误差检测结果信息的展示完整度、误差图像特征明显程度等方面有进一步提升的空间,值得进一步研究改进。提出了一种新型误差检测结果可视化方法,将误差信息转化为极坐标形式,将误差数据进行极坐标网格化展示,能够更加充分地展示检测结果信息和图像特征,并通过应用示例论证了该方法的有效性、相对传统方法的优势、以及在误差溯源方面的应用潜力。目前,该方法已在ISO10791国际标准修订草案的会议讨论中获得应用,取得了良好的展示效果。展开更多
As part of the 4th industrial revolution,programmable mechanical metamaterials exhibit great application potential in flexible robotics,vibration control,and impact protection.However,maintaining a programmed state wi...As part of the 4th industrial revolution,programmable mechanical metamaterials exhibit great application potential in flexible robotics,vibration control,and impact protection.However,maintaining a programmed state without sustaining the external stimulus is often challenging and leads to additional energy consumption.Inspired by Rubik’s cube,we design and study an in-situ programmable and distribution-reconfigurable mechanical metamaterial(IPDR-MM).A matrix model is developed to model IPDR-MMs and describe their morphological transitions.Based on this model,the reinforcement learning method is employed to find the pathways for morphological transitions.We find that IPDR-MMs have controllable stiffness across several orders of magnitude and a wide range of adjustable anisotropies through morphology transformation.Additionally,because of the independence of the directions of morphology transformation and bearing,IPDR-MMs exhibit good stability in bearing and can readily achieve high stiffness.The Rubik’s cube-inspired design concept is also instructive for other deformable structures and metamaterials,and the current version of the proposal should be sufficiently illustrative to attract and broaden interdisciplinary interests.展开更多
文摘RTCP(rotation tool centre point)检测方法是一种被广泛应用的五轴机床动态控制精度检测方法,目前针对RTCP检测的测量结果可视化方法对误差检测结果信息的展示完整度、误差图像特征明显程度等方面有进一步提升的空间,值得进一步研究改进。提出了一种新型误差检测结果可视化方法,将误差信息转化为极坐标形式,将误差数据进行极坐标网格化展示,能够更加充分地展示检测结果信息和图像特征,并通过应用示例论证了该方法的有效性、相对传统方法的优势、以及在误差溯源方面的应用潜力。目前,该方法已在ISO10791国际标准修订草案的会议讨论中获得应用,取得了良好的展示效果。
基金the support of the National Natural Science Foun-dation of China(Grant No.12202084)the the Fundamental Re-search Funds for the Central Universities(Grant No.2024CDJXY009)+8 种基金the support of the National Natural Science Foundation of China(Grant No.12372127)the Fundamental Research Funds for the Central Uni-versities(Grant No.2022CDJQY-004)Chongqing Natural Science Foundation(Grant Nos.CSTB2024NSCQ-JQX0028 and CSTB2023NSCQ-LZX0083)the support of the National Natural Science Foundation of China(Grant No.12202085)the China Postdoctoral Science Foundation Funded Project(Grant No.2022M720562)the Special Fund for Postdoctoral Research Project of Chongqing(Grant No.2021XM3022)the support of the National Natural Science Foundation of China(Grant No.12302190)the Science Foundation of the National Key Laboratory of Science and Technology on Advanced Composites in Spe-cial Environments(Grant No.JCKYS2023603C018)the support of the EIPHI Graduate School(Grant No.ANR-17-EURE-0002).
文摘As part of the 4th industrial revolution,programmable mechanical metamaterials exhibit great application potential in flexible robotics,vibration control,and impact protection.However,maintaining a programmed state without sustaining the external stimulus is often challenging and leads to additional energy consumption.Inspired by Rubik’s cube,we design and study an in-situ programmable and distribution-reconfigurable mechanical metamaterial(IPDR-MM).A matrix model is developed to model IPDR-MMs and describe their morphological transitions.Based on this model,the reinforcement learning method is employed to find the pathways for morphological transitions.We find that IPDR-MMs have controllable stiffness across several orders of magnitude and a wide range of adjustable anisotropies through morphology transformation.Additionally,because of the independence of the directions of morphology transformation and bearing,IPDR-MMs exhibit good stability in bearing and can readily achieve high stiffness.The Rubik’s cube-inspired design concept is also instructive for other deformable structures and metamaterials,and the current version of the proposal should be sufficiently illustrative to attract and broaden interdisciplinary interests.
