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A fast and accurate dynamic relaxation scheme
Mohammad REZAIEE-PAJAND, Mohammad MOHAMMADI-KHATAMI
《结构与土木工程前沿(英文)》 2019年 第13卷 第1期 页码 176-189 doi: 10.1007/s11709-018-0486-2
关键词: viscous dynamic relaxation time step displacement error geometric nonlinear analysis
Mesh relationship modeling and dynamic characteristic analysis of external spur gears with gear wear
《机械工程前沿(英文)》 2022年 第17卷 第1期 页码 9-9 doi: 10.1007/s11465-021-0665-z
关键词: gear wear mesh relationship mesh stiffness transmission error vibration characteristics
Walha LASSAAD, Tounsi MOHAMED, Driss YASSINE, Chaari FAKHER, Fakhfakh TAHER, Haddar MOHAMED
《机械工程前沿(英文)》 2013年 第8卷 第2期 页码 127-136 doi: 10.1007/s11465-013-0254-x
In this paper we investigate the nonlinear dynamic behaviour of a cam mechanism with oscillating roller follower in presence of defects. The nonlinear developed lumped-mass model includes eight degrees of freedom with two nonlinear hertzian contacts. The first one is located between cam and first roller while the second is between second roller and the sliding rod. The nonlinear dynamic behaviour is described by second order differential equations which are resolved by using the implicit Newmark algorithm combined with the Newton-Raphson iterative scheme. The influence of the cam profile error on the dynamic behaviour is also investigated.
关键词: cam nonlinear behaviour oscillating roller follower profile error
Yin ZHANG, Jianwei WU, Kunpeng XING, Zhongpu WEN, Jiubin TAN
《机械工程前沿(英文)》 2020年 第15卷 第4期 页码 517-537 doi: 10.1007/s11465-020-0589-z
关键词: air-floating guide rail error transfer model driving and following structure dynamic error uncertainty evaluation Monte Carlo method
Chord error constraint based integrated control strategy for contour error compensation
Tie ZHANG, Caicheng WU, Yanbiao ZOU
《机械工程前沿(英文)》 2020年 第15卷 第4期 页码 645-658 doi: 10.1007/s11465-020-0601-7
关键词: cross-coupling controller contour error tracking error position error compensator feed rate regulator
Kinematic error separation on five-axis NC machine tool based on telescoping double ball bar
Min WANG, Jianzhong HU, Tao ZAN
《机械工程前沿(英文)》 2010年 第5卷 第4期 页码 431-437 doi: 10.1007/s11465-010-0110-1
关键词: error modeling error separation telescoping double ball bar five-axis numerical control (NC) machining tool
Robust ensemble of metamodels based on the hybrid error measure
《机械工程前沿(英文)》 2021年 第16卷 第3期 页码 623-634 doi: 10.1007/s11465-021-0641-7
关键词: metamodel ensemble of metamodels hybrid error measure stochastic problem
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
一种针对测试误差、参数误差和负荷突变故障分析的多功能动态状态估计器 Article
Mehdi AHMADI JIRDEHI,Reza HEMMATI,Vahid ABBASI,Hedayat SABOORI
《信息与电子工程前沿(英文)》 2016年 第17卷 第11期 页码 1218-1227 doi: 10.1631/FITEE.1500301
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
Error measurement and assemble error correction of a 3D-step-gauge
MAO Xinyong, LI Bin, SHI Hanmin, LIU Hongqi, LI Xi, LI Peigen
《机械工程前沿(英文)》 2007年 第2卷 第4期 页码 388-393 doi: 10.1007/s11465-007-0067-x
Error analysis and optimization of a 3-degree of freedom translational Parallel Kinematic Machine
null
《机械工程前沿(英文)》 2014年 第9卷 第2期 页码 120-129 doi: 10.1007/s11465-014-0300-3
In this paper, error modeling and analysis of a typical 3-degree of freedom translational Parallel Kinematic Machine is presented. This mechanism provides translational motion along the Cartesian X-, Y- and Z- axes. It consists of three limbs each having an arm and forearm with prismatic-revolute-revolute-revolute joints. The moving or tool platform maintains same orientation in the entire workspace due to its joint arrangement. From inverse kinematics, the joint angles for a given position of tool platform necessary for the error modeling and analysis are obtained. Error modeling is done based on the differentiation of the inverse kinematic equations. Variation of pose errors along X, Y and Z directions for a set of dimensions of the parallel kinematic machine is presented. A non-dimensional performance index, namely, global error transformation index is used to study the influence of dimensions and its corresponding global maximum pose error is reported. An attempt is made to find the optimal dimensions of the Parallel Kinematic Machine using Genetic Algorithms in MATLAB. The methodology presented and the results obtained are useful for predicting the performance capability of the Parallel Kinematic Machine under study.
关键词: translational Parallel Kinematic Machine error modeling global error transformation index
Identification of thermal error in a feed system based on multi-class LS-SVM
Chao JIN, Bo WU, Youmin HU, Yao CHENG
《机械工程前沿(英文)》 2012年 第7卷 第1期 页码 47-54 doi: 10.1007/s11465-012-0307-6
Research of thermal characteristics has been a key issue in the development of high-speed feed system. The thermal positioning error of a ball-screw is one of the most important objects to consider for high-accuracy and high-speed machine tools. The research work undertaken herein ultimately aims at the development of a comprehensive thermal error identification model with high accuracy and robust. Using multi-class least squares support vector machines (LS-SVM), the thermal positioning error of the feed system is identified with the variance and mean square value of the temperatures of supporting bearings and screw-nut as feature vector. A series of experiments were carried out on a self-made quasi high-speed feed system experimental bench HUST-FS-001 to verify the identification capacity of the presented method. The results show that the recommended model can be used to predict the thermal error of a feed system with good accuracy, which is better than the ordinary BP and RBF neural network. The work described in this paper lays a solid foundation of thermal error prediction and compensation in a feed system.
关键词: least squares support vector machine (LS-SVM) feed system thermal error precision machining
张国雄
《中国工程科学》 2000年 第2卷 第3期 页码 62-66
测量是获取信息的重要手段。科学研究、生产、高科技发展都离不开测量。测量技术发展的重要特点是它与信息技术的融合,这是提高测量精度、在线和动态测量、复杂参数和复杂环境下测量、智能测量的需要。这一融合贯穿始终,它包括信号调制与解调、采样与重构、信号融合、数据压缩、滤波、信号变换、时间序列分析、谱分析、数据拟合与建模、模式识别、神经网络、仿真与虚拟、误差分离、误差补偿、冗余技术、决策与智能技术等,它们互相支持。文章通过三坐标测量机误差补偿、圆度和轴系误差测量,以及大型工程的柔性坐标测量系统,介绍其在提高测量精度、优化、自标定、丢失信息自恢复、系统重组等方面的作用及其关键技术。
标题 作者 时间 类型 操作
A fast and accurate dynamic relaxation scheme
Mohammad REZAIEE-PAJAND, Mohammad MOHAMMADI-KHATAMI
期刊论文
Mesh relationship modeling and dynamic characteristic analysis of external spur gears with gear wear
期刊论文
Nonlinear dynamic behaviour of a cam mechanism with oscillating roller follower in presence of profileerror
Walha LASSAAD, Tounsi MOHAMED, Driss YASSINE, Chaari FAKHER, Fakhfakh TAHER, Haddar MOHAMED
期刊论文
Evaluation of measurement uncertainty of the high-speed variable-slit system based on the Monte Carlo method
Yin ZHANG, Jianwei WU, Kunpeng XING, Zhongpu WEN, Jiubin TAN
期刊论文
Chord error constraint based integrated control strategy for contour error compensation
Tie ZHANG, Caicheng WU, Yanbiao ZOU
期刊论文
Kinematic error separation on five-axis NC machine tool based on telescoping double ball bar
Min WANG, Jianzhong HU, Tao ZAN
期刊论文
Dependence of error sensitivity of frequency on bias voltage in force-balanced micro accelerometer
Lili CHEN, Wu ZHOU
期刊论文
一种针对测试误差、参数误差和负荷突变故障分析的多功能动态状态估计器
Mehdi AHMADI JIRDEHI,Reza HEMMATI,Vahid ABBASI,Hedayat SABOORI
期刊论文
Error measurement and assemble error correction of a 3D-step-gauge
MAO Xinyong, LI Bin, SHI Hanmin, LIU Hongqi, LI Xi, LI Peigen
期刊论文
Error analysis and optimization of a 3-degree of freedom translational Parallel Kinematic Machine
null
期刊论文
Identification of thermal error in a feed system based on multi-class LS-SVM
Chao JIN, Bo WU, Youmin HU, Yao CHENG
期刊论文