上海工程技术大学学报

2024 Vol. 38, No. 1

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Modern Traffic Engineering
Materials Science and Eco-Chemical Engineering
Advanced Manufacturing and Intelligent Control
Mathematical Sciences and Application

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Modern Traffic Engineering

Capacitance status identification of subway vehicles based on optimized VMD and energy relative entropy

LI Xiaobo, CAO Shuo, FENG Qiufeng, BAI Yannian, YANG Zhihao, ZHANG Hao

2024, 38(1): 1-6. doi: 10.12299/jsues.23-0083

Abstract:
Aiming at the problem that there is no obvious symptom of capacitance performance degradation on subway vehicles, a capacitance status identification method based on optimized variational mode decomposition (VMD) and energy relative entropy was proposed. By establishing a Matlab circuit model, the o...

[Abstract](892) [FullText HTML] (139) [PDF 1343KB](387)

Research on vehicle location of improved point cloud matching algorithm with laser odometer

ZHU Meng, MA Qihua

2024, 38(1): 7-14. doi: 10.12299/jsues.22-0282

Abstract:
Aiming at the problems that traditional iterative closest point (ICP) algorithm depends on initial position, long matching time and poor matching accuracy in the process of point cloud matching, a vehicle location method based on laser odometry improved point cloud registration algorithm was propose...

[Abstract](1072) [FullText HTML] (132) [PDF 2714KB](327)

Optimization of metro express stopping scheme based on OD pair of passenger flow

LI Yuhua, YANG Kaihe, DING Xiaobing, LIU Zhigang

2024, 38(1): 15-22, 69. doi: 10.12299/jsues.23-0111

Abstract:
In order to further determine the metro express stopping station, an optimization model of express stopping scheme based on origin-destination (OD) pair of passenger flow was established. Firstly, a road cost function was constructed to allocate OD passenger flow according to route cost. Secondly, t...

[Abstract](337) [FullText HTML] (180) [PDF 1331KB](241) [Cited by] (1)

Research on safety redundancy of automotive EPS system based on functional safety

CAO Zijian, WU Changshui, CHEN Li

2024, 38(1): 23-29. doi: 10.12299/jsues.23-0108

Abstract:
Electric power steering (EPS) system is a commonly used steering actuator for vehicles at present, and its failure will seriously affect the safety of drivers and passengers. A safety redundancy mechanism for the EPS system was established based on functional safety standards. Based on ISO26262, the...

[Abstract](765) [FullText HTML] (202) [PDF 1408KB](235)

Materials Science and Eco-Chemical Engineering

Study on influence of pyramid baffle on PEMFC performance

WANG Yaochen, REN Hongjuan

2024, 38(1): 30-37. doi: 10.12299/jsues.22-0241

Abstract:
The flow channel structure of a proton exchange membrane fuel cell (PEMFC) has a significant impact on gas flow, diffusion and electrochemical reaction. By building the proposed three-dimensional PEMFC model of a pyramid-shaped baffle and running numerical simulations, the effects of different pyram...

[Abstract](450) [FullText HTML] (264) [PDF 1866KB](778) [Cited by] (1)

Influence analysis of parameters of bushing on oil film characteristics of piston/bushing interface in hydraulic piston pump

ZHU Xiling, ZHANG Yuhua

2024, 38(1): 38-43. doi: 10.12299/jsues.23-0175

Abstract:
To better the wear condition of the piston/bushing interface, the fluid-structure model was created, the interaction between fluid domain and solid domain was studied, the elastic deformations of the piston and bushing were considered, the impact of different thickness of bushing and material with d...

[Abstract](311) [FullText HTML] (273) [PDF 1956KB](456)

Research on lightweight solver for welding thermal cycle based on Lagrange-Galerkin finite element method

ZHANG Hao, YE Xin, XIA Peng, PAN Nanxu, LI Xianfa, YU Tingting, ZHANG Pengfei

2024, 38(1): 44-49. doi: 10.12299/jsues.23-0152

Abstract:
The welding thermal cycle has many interfering factors, fast changing speed and wide influence range, so it is often necessary to predict and control them immediately to ensure the welding quality. Taking the temperature distribution and change of weld center as the research object, and it was simpl...

[Abstract](366) [FullText HTML] (140) [PDF 1039KB](203)

Numerical simulation research of friction stir welding based on SPH method

HAN Zeping, CAO Lijie

2024, 38(1): 50-56. doi: 10.12299/jsues.23-0060

Abstract:
Smoothed particle hydrodynamics (SPH) is a meshless method based on Lagrangian. ABAQUS software was used to simulate the friction stir welding of AZ31B magnesium alloy based on the SPH method. By changing the rotation speed of the stirring too, the distributions of residual stress and temperature we...

[Abstract](343) [FullText HTML] (132) [PDF 1836KB](86)

Advanced Manufacturing and Intelligent Control

Design and implementation of massage robot based on visual guidance

WU Xin, GONG Bin, YANG Hao, FANG Yu

2024, 38(1): 57-62. doi: 10.12299/jsues.23-0174

Abstract:
A traditional Chinese medicine (TCM) massage robot based on visual guidance was designed. By building a visual guidance platform, the massage robot platform was established based on the Franka multi-degree of freedom robotic arm, and the data mapping model between the two platforms was constructed. ...

[Abstract](547) [FullText HTML] (200) [PDF 1789KB](99) [Cited by] (1)

Force feedback control for variable parameter vascular interventional surgery robot based on terminal sliding mode

SUN Haoyue, HU Zhi

2024, 38(1): 63-69. doi: 10.12299/jsues.23-0082

Abstract:
Aiming at the problem of variable parameters and external disturbance in force feedback control system of master-slave vascular interventional surgery robot, a terminal sliding mode control method with continuous function characteristics was proposed. The parameters and changes of the force feedback...

[Abstract](375) [FullText HTML] (166) [PDF 1550KB](70)

Research on a new type of bolt axial force monitoring device

GAO Jian

2024, 38(1): 70-74. doi: 10.12299/jsues.23-0147

Abstract:
Most bolt axial force monitoring devices have complex structure, high cost, and are difficult to achieve real-time and effective judgment. A new type of anchor force monitoring device was proposed, that can judge the anchor force at this time by listening to the sound of different frequencies. Pro-E...

[Abstract](259) [FullText HTML] (116) [PDF 1657KB](70)

Improved weed identification algorithm based on YOLOv5-SPD

YANG Zhifan, LI Haibo

2024, 38(1): 75-82. doi: 10.12299/jsues.23-0037

Abstract:
Accurate identification of weeds is the primary prerequisite for achieving machine replacement of manual weeding. The target of nascent weeds is small, making identification difficult. YOLOv5-SPD has good performance in small target recognition, but its robustness and accuracy still need to be impro...

[Abstract](473) [FullText HTML] (162) [PDF 3649KB](97)

Mathematical Sciences and Application

Self-training credit evaluation integrated classification model based on data editing

LIU Wenjie, WANG Guoqiang

2024, 38(1): 83-89. doi: 10.12299/jsues.23-0054

Abstract:
Aiming at the problems of unbalance of credit data and difficult acquisition of label data, a self-training credit evaluation integrated classification model based on data editing was proposed. Firstly, synthetic minority over-sampling technique (SMOTE) was used to sample labeled samples to alleviat...

[Abstract](240) [FullText HTML] (130) [PDF 775KB](83)

Effect of magnetic shearing on thermal transport of electrons in magnetic islands

LI Zekun, XIA Qinghao, ZHA Xuejun

2024, 38(1): 90-95, 100. doi: 10.12299/jsues.23-0029

Abstract:
The influence of magnetic shear parameters on the electron temperature distribution and heat transport in the magnetic island were studied by numerically solving the tokamak plasma energy transport equation. The results show that for different radial distributions of the safety factor, the magnitude...

[Abstract](161) [FullText HTML] (85) [PDF 2769KB](57)

Optimal control of acceptance ratio for feed cabin of China's Eye of Heaven

TANG Yuxiang, WANG Chenyang, YAO Weiyi, FANG Tao

2024, 38(1): 96-100. doi: 10.12299/jsues.23-0058

Abstract:
A mathematical model was established to optimize the acceptance ratio of the feed cabin of China's Eye of Heaven, the Five-hundred-meter Aperture Spherical Telescope (FAST), and the ideal parabolic equation of the reflector of FAST system was obtained. The adjustment scheme of the main cable node of...

[Abstract](523) [FullText HTML] (133) [PDF 1078KB](77)

Influence of willingness to accept fashion sharing in context of sustainable development

WANG Hongfeng, ZHANG Yunhe, ZHU Xiaoyu, TIAN Bingqiang, QU Hongjian

2024, 38(1): 101-110. doi: 10.12299/jsues.22-0350

Abstract:
Taking fashion sharing as the research object, a theoretical model of fashion sharing influencing factors and acceptance willingness was constructed on the basis of literature review. Based on the questionnaire survey data, factor and regression analysis were used to verify the relationship and infl...