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Ion beam figuring of continuous phase plates based on the frequency filtering process
Mingjin XU,Yifan DAI,Xuhui XIE,Lin ZHOU,Shengyi LI,Wenqiang PENG
《机械工程前沿(英文)》 2017年 第12卷 第1期 页码 110-115 doi: 10.1007/s11465-017-0430-5
Ion beam figuring (IBF) technology is an effective technique for fabricating continuous phase plates (CPPs) with small feature structures. This study proposes a multi-pass IBF approach with different beam diameters based on the frequency filtering method to improve the machining accuracy and efficiency of CPPs during IBF. We present the selection principle of the frequency filtering method, which incorporates different removal functions that maximize material removal over the topographical frequencies being imprinted. Large removal functions are used early in the fabrication to figure the surface profile with low frequency. Small removal functions are used to perform final topographical correction with higher frequency and larger surface gradient. A high-precision surface can be obtained as long as the filtering frequency is suitably selected. This method maximizes the high removal efficiency of the large removal function and the high corrective capability of the small removal function. Consequently, the fast convergence of the machining accuracy and efficiency can be achieved.
关键词: ion beam figuring (IBF) continuous phase plates (CPPs) machining accuracy machining efficiency frequency filtering process
State identification of home appliance with transient features in residential buildings
《能源前沿(英文)》 2022年 第16卷 第1期 页码 130-143 doi: 10.1007/s11708-022-0822-z
关键词: nonintrusive load monitoring (NILM) load disaggregation online load disaggregation Kalman filtering factorial hidden Markov model (FHMM) Labeled hIgh-Frequency daTaset for Electricity Disaggregation (LIFTED)
Recognition of diamond grains on surface of fine diamond grinding wheel
HUO Fengwei, JIN Zhuji, KANG Renke, GUO Dongming, YANG Chun
《机械工程前沿(英文)》 2008年 第3卷 第3期 页码 325-331 doi: 10.1007/s11465-008-0071-9
关键词: topography frequency disturbance filtering analysis wavelength
High frequency group pulse electrochemical machining
WU Gaoyang, ZHANG Zhijing, ZHANG Weimin, TANG Xinglun
《机械工程前沿(英文)》 2007年 第2卷 第3期 页码 293-296 doi: 10.1007/s11465-007-0051-5
关键词: HGPECM process machining quality passivation inter-electrode
近似高斯共轭:非线性、多模态、不确定以及约束下的参数递归滤波等 Review
Tian-cheng LI, Jin-ya SU, Wei LIU, Juan M. CORCHADO
《信息与电子工程前沿(英文)》 2017年 第18卷 第12期 页码 1913-1939 doi: 10.1631/FITEE.1700379
滤波天线:从创新概念到工业应用 Review Articles
Yun-fei CAO, Yao ZHANG, Xiu-yin ZHANG
《信息与电子工程前沿(英文)》 2020年 第21卷 第1期 页码 116-127 doi: 10.1631/FITEE.1900474
关键词: 滤波天线;双频;天线阵列
A frequency error estimation for isogeometric analysis of Kirchhoff–Love cylindrical shells
《结构与土木工程前沿(英文)》 doi: 10.1007/s11709-023-0006-x
关键词: isogeometric analysis Kirchhoff–Love cylindrical shell free vibration frequency error convergence
Xiaowei LUO, Yannick BENICHOU, Suyuan YU
《能源前沿(英文)》 2013年 第7卷 第4期 页码 506-510 doi: 10.1007/s11708-013-0275-5
关键词: aerosol particles collision frequency function coagulation
Hanli WU, Hua ZHAO, Jenny LIU, Zhentao HU
《结构与土木工程前沿(英文)》 2020年 第14卷 第5期 页码 1232-1246 doi: 10.1007/s11709-020-0653-0
关键词: bridge weigh-in-motion continuous bridge fast Fourier transform influence line axle weight calculation
Fuel variability effect on flickering frequency of diffusion flames
Jizhao LI, Yang ZHANG
《能源前沿(英文)》 2009年 第3卷 第2期 页码 134-140 doi: 10.1007/s11708-009-0034-9
关键词: fuel variability flickering frequency diffusion flames dynamics of combustion
Tian-cheng LI,Gabriel VILLARRUBIA,Shu-dong SUN,Juan M. CORCHADO,Javier BAJO
《信息与电子工程前沿(英文)》 2015年 第16卷 第11期 页码 969-984 doi: 10.1631/FITEE.1500199
关键词: Particle filter Resampling Kullback-Leibler divergence Kolmogorov-Smirnov statistic
Capacity limitation of nuclear units in grid based on analysis of frequency regulation
Yiping DAI, Pan JIANG, Lin GAO, Weimin KAN, Xiaoqing XIAO, Ge JIN
《能源前沿(英文)》 2012年 第6卷 第2期 页码 148-154 doi: 10.1007/s11708-012-0174-1
关键词: nuclear units capacity overspeed primary frequency control (PFC) second frequency control (SFC)
Oscillation frequency of simplified arterial tubes
Hui AN, Fan HE, Lingxia XING, Xiaoyang LI
《机械工程前沿(英文)》 2009年 第4卷 第3期 页码 300-304 doi: 10.1007/s11465-009-0038-5
关键词: spatial kinematics natural frequency finite element method
Xuzhan ZHOU,Shanshan LIU,Mingkun WANG,Yiping DAI,Yaohua TANG
《能源前沿(英文)》 2014年 第8卷 第3期 页码 386-393 doi: 10.1007/s11708-014-0323-9
关键词: high voltage (HV) grid frequency stability parameter identification primary frequency regulation (PFR)
Dependence of error sensitivity of frequency on bias voltage in force-balanced micro accelerometer
Lili CHEN, Wu ZHOU
《机械工程前沿(英文)》 2013年 第8卷 第2期 页码 146-149 doi: 10.1007/s11465-013-0260-z
To predict more precisely the frequency of force-balanced micro accelerometer with different bias voltages, the effects of bias voltages on error sensitivity of frequency is studied. The resonance frequency of accelerometer under closed loop control is derived according to its operation principle, and its error sensitivity is derived and analyzed under over etching structure according to the characteristics of Deep Reaction Ion Etching (DRIE). Based on the theoretical results, micro accelerometer is fabricated and tested to study the influences of AC bias voltage and DC bias voltage on sensitivity, respectively. Experimental results indicate that the relative errors between test data and theory data are less than 7%, and the fluctuating value of error sensitivity under the range of voltage adjustment is less than 0.01 μm . It is concluded that the error sensitivity with designed parameters of structure, circuit and process error can be used to predict the frequency of accelerometer with no need to consider the influence of bias voltage.
关键词: Micro-Electro-Mechanical Systems (MEMS) micro accelerometer force-balanced micro accelerometer frequency error sensitivity
标题 作者 时间 类型 操作
Ion beam figuring of continuous phase plates based on the frequency filtering process
Mingjin XU,Yifan DAI,Xuhui XIE,Lin ZHOU,Shengyi LI,Wenqiang PENG
期刊论文
Recognition of diamond grains on surface of fine diamond grinding wheel
HUO Fengwei, JIN Zhuji, KANG Renke, GUO Dongming, YANG Chun
期刊论文
High frequency group pulse electrochemical machining
WU Gaoyang, ZHANG Zhijing, ZHANG Weimin, TANG Xinglun
期刊论文
Calculation of collision frequency function for aerosol particles in free molecule regime in presence
Xiaowei LUO, Yannick BENICHOU, Suyuan YU
期刊论文
A filtering-based bridge weigh-in-motion system on a continuous multi-girder bridge considering the influence
Hanli WU, Hua ZHAO, Jenny LIU, Zhentao HU
期刊论文
Resampling methods for particle filtering: identical distribution, a new method, and comparable study
Tian-cheng LI,Gabriel VILLARRUBIA,Shu-dong SUN,Juan M. CORCHADO,Javier BAJO
期刊论文
Capacity limitation of nuclear units in grid based on analysis of frequency regulation
Yiping DAI, Pan JIANG, Lin GAO, Weimin KAN, Xiaoqing XIAO, Ge JIN
期刊论文
Parameter identification of interconnected power system frequency after trip-out of high voltage transmission
Xuzhan ZHOU,Shanshan LIU,Mingkun WANG,Yiping DAI,Yaohua TANG
期刊论文