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Research and Development of Highly Immersive Multi-projection Virtual Environment Systems

Jia Qingxuan,Xong Jingzhou,Sun Hanxu,Gao Xin,Yao Fusheng

Strategic Study of CAE 2006, Volume 8, Issue 8,   Pages 33-38

Abstract: ., graphics partition, render synchronization, geometric calibration, color calibration, etc. .

Keywords： multi-projection     render synchronization     stereo display     geometric calibration     color calibration    

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Deformable image registration with geometric changes

Yu LIU,Bo ZHU

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 10,   Pages 829-837 doi: 10.1631/FITEE.1500045

Abstract: Geometric changes present a number of difficulties in deformable image registration.In this paper, we propose aglobal deformation framework to model geometric changes whilst promoting aachieve this, we have developed an innovative model which significantly reduces the side effects of geometricintroduction of a sparsity-inducing norm, which is typically L1 norm regularization targeting regions where geometric

Keywords： Geometric changes     Image registration     Sparsity     Traumatic brain injury (TBI)    

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Probabilistic analysis of secant piles with random geometric imperfections

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 682-695 doi: 10.1007/s11709-021-0703-2

Abstract: safe and cost-effective secant-pile wall, a three-dimensional model of a secant pile, considering the geometricThe integrity of the secant-pile wall can be overestimated without considering the uncertainty of geometric

Keywords： secant piles     ultrasonic cross-hole testing     probabilistic analysis     reliability-based design     random imperfections    

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Zinc modification of Ni-Ti as efficient NiZnTi catalysts with both geometric and electronic improvements

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 4,   Pages 461-474 doi: 10.1007/s11705-021-2072-8

Abstract: The catalytic hydrogenation of nitroaromatics is an environmentally friendly technology for aniline production, and it is crucial to develop noble-metal-free catalysts that can achieve chemoselective hydrogenation of nitroaromatics under mild reaction conditions. In this work, zinc-modified Ni-Ti catalysts (NixZnyTi1) were fabricated and applied for the hydrogenation of nitroaromatics hydrogenation. It was found that the introduction of zinc effectively increases the surface Ni density, enhances the electronic effect, and improves the interaction between Ni and TiO2, resulting in smaller Ni particle size, more oxygen vacancies, higher dispersion and greater concentration of Ni on the catalyst surface. Furthermore, the electron-rich Niδ– obtained by electron transfer from Zn and Ti to Ni effectively adsorbs and dissociates hydrogen. The results reveal that NixZnyTi1 (Ni0.5Zn0.5Ti1) shows excellent catalytic performance under mild conditions (70 °C and 6 bar). These findings provide a rational strategy for the development of highly active non-noble-metal hydrogenation catalysts.

Keywords： bimetal strategy     oxygen vacancy     non-noble metal catalyst     hydrogenation     aromatic nitro compounds    

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Research on HJ-1A/B satellites data automatic geometric precision correction design

Xiong Wencheng,Shen Wenming,Wang Qiao,Shi Yuanli,Xiao Rulin and Fu Zhuo

Strategic Study of CAE 2014, Volume 16, Issue 3,   Pages 37-42

Abstract: The realization of the observation data geometric precision correction is of great significance for macroThe paper analyzed the parameter characteristics of HJ-1satellite and geometric features of HJ-1satellitegeometric precision correction method were designed.Actual operating data showed that the method couldachieve good result for automatic geometric precision correction of HJ-1satellite data，automatic HJ-1CCD image geometric precision correction accuracy could be achieved within two pixels and automatic

Keywords： HJ-1satellite     automatic     geometric precision correction     CCD    

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Development of a novel hand−eye calibration for intuitive control of minimally invasive surgical robot

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 3, doi: 10.1007/s11465-022-0698-y

Abstract: Obtaining the transformation with respect to the laparoscope and robot slave arm frames using hand−eye calibrationWe proposed a novel two-step modified dual quaternion for hand−eye calibration in this study.The dual quaternion was exploited to solve the hand−eye calibration simultaneously and powered by anThe obtained hand−eye calibration result was applied to the intuitive control by using the hand−eye coordinationResults demonstrate this method can improve the calibration accuracy.

Keywords： minimally invasive surgery     hand−eye calibration     intuitive control     surgical robot     dual quaternion    

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Isogeometric analysis based on geometric reconstruction models

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4,   Pages 782-797 doi: 10.1007/s11465-021-0648-0

Abstract: In isogeometric analysis (IGA), the boundary representation of computer-aided design (CAD) and the tensor-product non-uniform rational B-spline structure make the analysis of three-dimensional (3D) problems with irregular geometries difficult. In this paper, an IGA method for complex models is presented by reconstructing analysis-suitable models. The CAD model is represented by boundary polygons or point cloud and is embedded into a regular background grid, and a model reconstruction method is proposed to obtain the level set function of the approximate model, which can be directly used in IGA. Three 3D examples are used to test the proposed method, and the results demonstrate that the proposed method can deal with complex engineering parts reconstructed by boundary polygons or point clouds.

Keywords： isogeometric analysis     reconstruction model     level set function     trimmed element     point cloud    

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Effects of critical geometric parameters on the optical performance of a conical cavity receiver

Hu XIAO, Yanping ZHANG, Cong YOU, Chongzhe ZOU, Quentin FALCOZ

Frontiers in Energy 2019, Volume 13, Issue 4,   Pages 673-683 doi: 10.1007/s11708-019-0630-2

Abstract: Most of the literature focuses on the optical performance of receivers with different geometric shapes, but less research is conducted on the effects of critical geometric parameters.

Keywords： parabolic collector     conical cavity receiver     critical geometric parameters     optical performance    

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Development of an onsite calibration device forrobot manipulators Research Article

Ziwei WAN, Chunlin ZHOU, Haotian ZHANG, Jun WU

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 2,   Pages 217-230 doi: 10.1631/FITEE.2200172

Abstract: During the calibration procedure, the robot manipulator first moves automatically to multiple end-effectorThe relative mounting positions are accurately measured and used as prior information to improve calibrationThe results of theoretical analysis indicate that MultiCal reduces calibration accuracy by 10% to 20%The results of a calibration experiment conducted on a Staubli TX90 robot show that MultiCal has only7% to 14% lower calibration accuracy compared to a measuring arm with a laser scanner, and 21% to 30%

Keywords： Calibration device     Kinematic calibration     Onsite calibration     Absolute accuracy    

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Mechanical and geometric advantages in compliant mechanism optimization

Michael Yu WANG

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 3,   Pages 229-241 doi: 10.1007/s11465-009-0066-1

Abstract: This paper presents a focused examination of the mechanical and geometric advantages in compliant mechanismsWith a linear elastic structural analysis, we quantify mechanical (and geometric) advantage in termsIt is shown that the common formulations using mechanical (or geometric) advantage would directly emulate

Keywords： compliant mechanisms     topology optimization     mechanical advantage     pseudo rigid-body mechanisms    

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Model of Fuzzy Geometric Programming in Economical Power Supply Radius and Optimum Seeking Method

Cao Bingyuan

Strategic Study of CAE 2001, Volume 3, Issue 3,   Pages 52-55

Abstract: A fuzzy geometric programming model of power supply radius under the fuzzy environment, including problemswith other static and dynamic optimum mathematical models such as controlling models and classical geometric

Keywords： fuzzy geometric programming     economic power supply radius     optimum seeking     transformer substations capacity    

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Remote calibration system for frequency based on in-place benchmark

Xiaobin HONG, Guixiong LIU, Zhuokui WU, Xipeng DU,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 3,   Pages 316-321 doi: 10.1007/s11465-010-0021-1

Abstract: According to the deficiencies of remote calibration mode based on material object reference, a new modelof a remote calibration system for frequency based on in-place benchmark is introduced, which is madeof a calibration subsystem on the spot and a remote management subsystem.The key technology of some key problems for the remote calibration system is particularly discussed,a phase method, frequency division based on dual high-frequency phase locked loop (PLL), and remote calibration

Keywords： remote calibration     in-place benchmark     frequency comparison     global position system (GPS)    

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Geometric optimization model for the solar cavity receiver with helical pipe at different solar radiation

Chongzhe ZOU, Huayi FENG, Yanping ZHANG, Quentin FALCOZ, Cheng ZHANG, Wei GAO

Frontiers in Energy 2019, Volume 13, Issue 2,   Pages 284-295 doi: 10.1007/s11708-019-0613-3

Abstract: In consideration of geometric parameters, several researches have already optimized the thermal efficiencyBesides, for a receiver in constant geometric parameters, the total heat losses increases dramatically

Keywords： cylindrical cavity receiver     3-D numerical simulation     geometric optimization     direct normal irradiation    

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Ultrasound-guided prostate percutaneous intervention robot system and calibration by informative particle

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 1,   Pages 3-3 doi: 10.1007/s11465-021-0659-x

Abstract: By applying the calibration method, a reasonable, reliable forward kinematic model is built, and the

Keywords： ultrasound image guidance     prostate percutaneous intervention     parallel robot     kinematics identification     particle swarm optimization     informative value    

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Application of consistent geometric decomposition theorem to dynamic finite element of 3D composite beam

Iman FATTAHI, Hamid Reza MIRDAMADI, Hamid ABDOLLAHI

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 3,   Pages 675-689 doi: 10.1007/s11709-020-0625-4

Abstract: and strain fields are decomposed into cross-sectional and longitudinal components, called consistent geometricFurthermore, from the viewpoint of consistent geometric decomposition theorem, the transformation and

Keywords： composite beam     dynamic finite element     degrees of freedom coupling     experimental validation     numerical validation    

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Title Author Date Type Operation

Research and Development of Highly Immersive Multi-projection Virtual Environment Systems

Jia Qingxuan,Xong Jingzhou,Sun Hanxu,Gao Xin,Yao Fusheng

Journal Article

Deformable image registration with geometric changes

Yu LIU,Bo ZHU

Journal Article

Probabilistic analysis of secant piles with random geometric imperfections

Journal Article

Zinc modification of Ni-Ti as efficient NiZnTi catalysts with both geometric and electronic improvements

Journal Article

Research on HJ-1A/B satellites data automatic geometric precision correction design

Xiong Wencheng,Shen Wenming,Wang Qiao,Shi Yuanli,Xiao Rulin and Fu Zhuo

Journal Article

Development of a novel hand−eye calibration for intuitive control of minimally invasive surgical robot

Journal Article

Isogeometric analysis based on geometric reconstruction models

Journal Article

Effects of critical geometric parameters on the optical performance of a conical cavity receiver

Hu XIAO, Yanping ZHANG, Cong YOU, Chongzhe ZOU, Quentin FALCOZ

Journal Article

Development of an onsite calibration device forrobot manipulators

Ziwei WAN, Chunlin ZHOU, Haotian ZHANG, Jun WU

Journal Article

Mechanical and geometric advantages in compliant mechanism optimization

Michael Yu WANG

Journal Article

Model of Fuzzy Geometric Programming in Economical Power Supply Radius and Optimum Seeking Method

Cao Bingyuan

Journal Article

Remote calibration system for frequency based on in-place benchmark

Xiaobin HONG, Guixiong LIU, Zhuokui WU, Xipeng DU,

Journal Article

Geometric optimization model for the solar cavity receiver with helical pipe at different solar radiation

Chongzhe ZOU, Huayi FENG, Yanping ZHANG, Quentin FALCOZ, Cheng ZHANG, Wei GAO

Journal Article

Ultrasound-guided prostate percutaneous intervention robot system and calibration by informative particle

Journal Article

Application of consistent geometric decomposition theorem to dynamic finite element of 3D composite beam

Iman FATTAHI, Hamid Reza MIRDAMADI, Hamid ABDOLLAHI

Journal Article