Search scope:
排序: Display mode:
What if the Global Positioning System Didn’t Work?
Mitch Leslie
Engineering 2019, Volume 5, Issue 6, Pages 985-986 doi: 10.1016/j.eng.2019.10.007
Influence of Rigidity of Feed System With Ball Screw in NC Lathe on Positioning Precision
Wu Nanxing,Hu Rufu,Sun Qinghong
Strategic Study of CAE 2004, Volume 6, Issue 9, Pages 46-49
Rigidity of feed system with ball screw in NC lathe has a major influence on loss of momentum andpositioning precision.Based on the spring mechanics model and the quality of the feed system, the analytic formulation forTheoretic basis for designing the structure, reducing loss of momentum and increasing positioning precisionof feed system has been provided.
Keywords: NC lathe rigidity loss of momentum positioning precision
The hoisting techniques of huge segments of the steel tower
Zhang Ping,Xiao Wenfu,Huang Tao,Jiang Jian,Cai Wei
Strategic Study of CAE 2010, Volume 12, Issue 4, Pages 58-62
Taizhou Changjiang River Highway Bridge adopts a three-tower, two-span layout for the first time in the world. The longitudinal shape of the middle tower is herringbone, and the steel gallows frame is adopted in the cross direction. This paper describes the installation, locating, and adjusting construction techniques of the huge segments including the selection of hoisting equipment.
Keywords: huge segments of steel tower lifting positioning adjusting precision control positioning system
Peter Weiss
Engineering 2021, Volume 7, Issue 3, Pages 290-303 doi: 10.1016/j.eng.2021.02.001
Keywords: EngineeringAchievements
Chengyuan LIANG, Fang YUAN, Xuedong CHEN, Wei JIANG, Lizhan ZENG, Xin LUO
Frontiers of Mechanical Engineering 2019, Volume 14, Issue 3, Pages 255-272 doi: 10.1007/s11465-019-0538-x
Keywords: nano-precision positioning stage analysis and design structural and dynamic parameters dynamic accuracy
Kinematic calibration of precise 6-DOF stewart platform-type positioning systems for radio telescope
Juan Carlos JáUREGUI, Eusebio E. HERNáNDEZ, Marco CECCARELLI, Carlos LóPEZ-CAJúN, Alejandro GARCíA
Frontiers of Mechanical Engineering 2013, Volume 8, Issue 3, Pages 252-260 doi: 10.1007/s11465-013-0249-7
The pose accuracy of a parallel robot is a function of the mobile platform posture. Thus, there is no a single value of the robot’s accuracy. In this paper, two novel methods for estimating the accuracy of parallel robots are presented. In the first method, the pose accuracy estimation is calculated by considering the propagation of each error, i.e., error variations are considered as a function of the actuator’s stroke. In the second method, it is considered that each actuator has a constant error at any stroke. Both methods can predict pose accuracy of precise robots at design stages, and/or can reduce calibration time of existing robots. An example of a six degree-of-freedom parallel manipulator is included to show the application of the proposed methods.
Keywords: pose errors error estimation parallel robot radio telescopes
Analysis and control of micro-stepping characteristics of ultrasonic motor
Ning CHEN, Jieji ZHENG, Xianliang JIANG, Shixun FAN, Dapeng FAN
Frontiers of Mechanical Engineering 2020, Volume 15, Issue 4, Pages 585-599 doi: 10.1007/s11465-019-0577-3
Keywords: ultrasonic motor stepping characteristics pulse number control synchronous acquisition system precisepositioning
Hua LIU, Xin XIE, Ruoyu TAN, Lianchao ZHANG, Dapeng FAN
Frontiers of Mechanical Engineering 2017, Volume 12, Issue 2, Pages 265-278 doi: 10.1007/s11465-017-0453-y
Most of the XY positioning stages proposed in previous studies are mainly designed byIn this study, a 2-degree-of-freedom linear compliant positioning stage (LCPS) is developed by mechatronicdesign to balance the interacting performance indicators and realize the desired positioning stage.
Keywords: mechatronic design linear compliant positioning stage large travel range high out-of-plane payload capacity
Wang Renchao,Huang Jingfeng,Shi Zhou,Wang Ke
Strategic Study of CAE 2000, Volume 2, Issue 6, Pages 80-83
Based on “On Construction of Agricultural Information System Engineering”,the developmentThe agricultural information science was defined as an agricultural science system which is based ontechnique, global positioning system technique and computer net system technique.technology, geographic information system technology, global positioning system technology and computernet system technology and its function were introduced simply.
Keywords: agricultural information science agricultural information system technology remote sensing technology geographic information system technology global positioning system technology computer net technology
Luan Xiuchun,Han Weishi,Wang Junling,Yang Aiguang
Strategic Study of CAE 2010, Volume 12, Issue 3, Pages 45-50
This paper sets forth the realization of automatic positioning of cranestorehouse for nuclear waste, including the hardware configuration and software configuration of the control system
Keywords: nuclear waste crane automatic control positioning
Guo Shuren, Jiang Kun, Li Xing, Liu Gang, Li Ping, Li Linze, Guo Siyuan
Strategic Study of CAE 2023, Volume 25, Issue 2, Pages 50-58 doi: 10.15302/J-SSCAE-2023.02.006
Keywords: positioning navigation and timing system satellite navigation satellite-independent navigation technologyintegration system development
Positioning Australia for the Future
Nicholas Brown, John Dawson, Ryan Ruddick
Engineering 2020, Volume 6, Issue 8, Pages 857-859 doi: 10.1016/j.eng.2020.07.012
Bi-modes alternation stepping ultrasonic motors
JIN Jiamei, ZHAO Chunsheng
Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1, Pages 101-105 doi: 10.1007/s11465-008-0018-1
Keywords: miss-step bi-direction Two-phase sinusoidal positioning accumulative
Xin Chen,Youdun Bai,Zhijun Yang,Jian Gao,Gongfa Chen
Engineering 2015, Volume 1, Issue 3, Pages 391-398 doi: 10.15302/J-ENG-2015063
High-speed and precision positioning are fundamental requirements for high-acceleration low-load mechanismsTherefore, we propose a new structural optimization and velocity-planning method for the precision positioningamplitude of residual vibration could be decreased by more than 20% via structural optimization and the positioningThis method provides an effective theoretical support for the precision positioning of high-acceleration
Keywords: high-acceleration low-load mechanism precision positioning spatial and temporal distribution inertial
Mutiara Syifa, Sung-Jae Park, Chang-Wook Lee
Engineering 2020, Volume 6, Issue 8, Pages 919-926 doi: 10.1016/j.eng.2020.07.001
Keywords: Pine wilt disease Drone remote sensing Artificial neural network Support vector machine Global positioningsystem
Title Author Date Type Operation
Influence of Rigidity of Feed System With Ball Screw in NC Lathe on Positioning Precision
Wu Nanxing,Hu Rufu,Sun Qinghong
Journal Article
The hoisting techniques of huge segments of the steel tower
Zhang Ping,Xiao Wenfu,Huang Tao,Jiang Jian,Cai Wei
Journal Article
The Global Positioning System (GPS): Creating Satellite Beacons in Space, Engineers Transformed Daily
Peter Weiss
Journal Article
Comprehensive analysis of the influence of structural and dynamic parameters on the accuracy of nano-precision positioning
Chengyuan LIANG, Fang YUAN, Xuedong CHEN, Wei JIANG, Lizhan ZENG, Xin LUO
Journal Article
Kinematic calibration of precise 6-DOF stewart platform-type positioning systems for radio telescope
Juan Carlos JáUREGUI, Eusebio E. HERNáNDEZ, Marco CECCARELLI, Carlos LóPEZ-CAJúN, Alejandro GARCíA
Journal Article
Analysis and control of micro-stepping characteristics of ultrasonic motor
Ning CHEN, Jieji ZHENG, Xianliang JIANG, Shixun FAN, Dapeng FAN
Journal Article
Mechatronic design of a novel linear compliant positioning stage with large travel range and high out-of-plane
Hua LIU, Xin XIE, Ruoyu TAN, Lianchao ZHANG, Dapeng FAN
Journal Article
Discussion on the Agricultural Information Science——On Construction of Agricultural Information System
Wang Renchao,Huang Jingfeng,Shi Zhou,Wang Ke
Journal Article
The realization of automatic positioning of crane in high precise in the storehouse for nuclear waste
Luan Xiuchun,Han Weishi,Wang Junling,Yang Aiguang
Journal Article
Development of Satellite and Satellite-Independent Navigation Technologies from the Perspective of PNT System
Guo Shuren, Jiang Kun, Li Xing, Liu Gang, Li Ping, Li Linze, Guo Siyuan
Journal Article
A Precision-Positioning Method for a High-Acceleration Low-Load Mechanism Based on Optimal Spatial and
Xin Chen,Youdun Bai,Zhijun Yang,Jian Gao,Gongfa Chen
Journal Article