Xiang Zhou, Delou Wang, Peng Zhang, Liu Chen, Zheng Zhang, Chengjun Li, Yuwen Chen, Shunyi Chen, Tianjiao Xue
Abstract: This article conducts numerical calculations on the head cover bolts of the pump turbine in Yixing Pumped Storage Power Station under typical steady-state and transient conditions and analyses the force characteristics of the coupling bolts under turbine, pump, pump zero flow and load rejection conditions. On this basis, further evaluation of head cover bolts safety and reasonable suggestions for subsequent operation are provided.
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Kaiqiang He, Simin Zhu, Weiwei Ge, Liu Yang, Yinghui Li
Abstract: 4-Amino-3-hydrazino-1,2,4-triazolium 5-nitrotetrazolate (AHT·NT): an energetic nitrogen-rich salt was preparedand fully characterized by1H,13C NMR, and IR spectroscopy, differential scanning calorimetry (DSC), andelemental analysis. AHT·NT crystallizes in the triclinic crystal system in Monoclinic crystal system P2 (1) /c group. By including two molecular moieties in the unit cell, the calculated density is 1.789 g·cm-3. There are extensive hydrogen bonding interactions between the cation and …
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Haijun Zhou, Xiaolei Zhang, Lu Bai, Yating Zhao, Xiaoqi Chen, Fen Zhang, Yantao Li
Abstract: Polypropylene-based composites with high thermal conductivity were obtained by pressure injection molding using a hybrid form of PP as the matrix and FG as the thermally conductive filler with a particle size of 37 µm. Microscopic morphologies of the material were examined by SEM to determine the effect of FG content on the thermal conductivity and mechanical properties of the composites. The study found a clear correlation between the thermal conductivity of the composites and the FG content. …
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Xiao Sun
Abstract: With the rapid growth of global energy demand and increasing reliance on renewable energy, finding efficient, safe, and sustainable energy storage methods has become crucial. This article focuses on the importance of solid-state batteries in this context and their applications in renewable energy storage. Compared to traditional liquid lithium-ion batteries, solid-state batteries use solid-state electrolytes, providing enhanced safety, higher energy density, and longer service life. This article …
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Ruojing Zhang
Abstract: A five degree of freedom biomimetic robotic arm was designed using the anthropomorphic method. The arm mainly uses a combination of worm and gear mechanisms to achieve the motion of the robotic arm, which has the advantages of simple structure and reliable motion. adopt A mathematical model of the mechanism was established and kinematic analysis was conducted on the bionic robotic arm.
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Lingda Feng
Abstract: In order to make the temperature error of fiber-optic current sensor (FGB) based on polarization modulation principle meet the requirements of engineering applications, the temperature error characteristics of FGB are analyzed theoretically, and the optimized BP neural network is used for the temperature compensation of FGB, which realizes the nonlinear temperature error correction of the sensor, and compares and analyzes the experimental results with those of other types of temperature …
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Jiayi Li
Abstract: In order to replace humans performing hazardous tasks in complex high-altitude environments, we have designed a two-armed modular bionic robot with clawing, climbing and mobility capabilities for high-altitude tasks in agriculture, forestry and construction. In this paper, a five-degree-of-freedom climbing modular robot with the ability to maneuver between poles in space is presented and analyzed. Three types of climbing gaits is designed and compared in the ADAMS simulation environment based on …
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Yi Yang, Tao Wang, Zhengzhong Zeng, Jianpin Xia, Yuzhou Chang
Abstract: Propose a method for evaluating the measurement uncertainty of magnification error in metallographic microscope objective lens. Establish a measurement uncertainty evaluation model based on calibration methods and analyse the sources of each uncertainty. Combining measurement examples, this article elaborates on the evaluation of uncertainty in the measurement of magnification error of metallographic microscope objective lens.
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Nianyun Liu, Weiwei Song
Abstract: With the continuous development of industrial automation, rolling bearings play a crucial role in many fields as key mechanical components, and the fault diagnosis of rolling bearings have great significance. This paper discusses a deep learning based rolling bearing fault diagnosis method, aiming to improve the accuracy and efficiency of fault detection. Firstly, the vibration signals of rolling bearings are pre-processed to extract the feature information that helps fault diagnosis. Then, the …
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Shiqi Xiong, Weiwei Song
Abstract: Memristor is a newly realized physical element, and it is a non-linear circuit element with memory function. We constructed a new three-dimensional chaotic system is constructed which contains four parameters and five non-linear terms. The system is analyzed by nonlinear dynamic analysis methods such as theoretical deduction analysis, numerical simulation, lyapunov exponent spectrum, and bifurcation diagram. The dynamic behavior of the system. This paper proposes a new three-dimensional chaotic …
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Shijie Hou, Benlin Ying, Yonghao Zhang
Abstract: Two kinds of interface shear force transmission models of expanded pile are introduced in combination with FRIC subroutine. ABAQUS is used to carry out numerical analysis to study the load transfer characteristics of expanded pile under vertical load. The results show: the load on the top of the pile is transmitted by the strong cohesive force between the pipe pile and the expanded interface. Under the vertical load, the axial stress of the pipe pile in the expanded pile gradually decreases with …
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Guangzhong Hu, Guangyu Xie, Xiuquan Cao, Zhiyuan Deng, Yuhang Zhang, Tingting Chen, Lixian Xie
Abstract: The lateral climbing force of a crawler transporter is analyzed with the help of relevant theoretical formulas. Discrete element software and multi-body dynamics software were used to carry out coupling simulation for tracked vehicles, and orthogonal test was used to analyze the main and secondary factors affecting the lateral climbing of tracked vehicles. The results show that the main factors affecting the lateral climbing of tracked transporters are respectively the track gauge, the lateral …
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Bo Zhou, Jing Yang, Xiang Wang, Sixiao Chen, Linsong Hu, Kaiyang Wu
Abstract: In order to solve the problems of high lubricating oil temperature, fast aging of seals and serious wear of parts during high-speed operation of equipment, a lubricating oil circulation refrigeration system for cigarette machine was designed. The system uses PLC as the main controller, and controls the motor speed through Profibus bus mode to realize the circulating refrigeration of lubricating oil. Through the test with ZJ112 unit as the object,we found that the system runs well and the failure …
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Guorui Li, Maosong Li, Yu Guo, Jinhua Song, Yang Zhao, Xianan Li, Yajie Feng, Jun Yin
Abstract: As the most important equipment in the automated storage of cigarette product warehouses, the stacker is a machine used for automated operation of high-rise shelves in cigarette product automated warehouses. In order to ensure the safe operation of the stacker crane, it is necessary to promptly repair the ground rail when the local rail cracks. After completing general welding operations such as surfacing, the track cracks again after three days of operation, and the stacker crane makes a huge …
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Juanjuan Li, Guofang Wang, Sen Jia, Yun Wang, Yannan Liu
Abstract: Gear pitting failure in the reducer has a significant impact on the normal operation and transmission efficiency of the equipment. In this paper, a vibration-based experimental platform for diagnosing gear pitting failure in reducers is developed. The platform aims to simulate gear pitting failure conditions and analyze vibration signal characteristics. Through the validation of experimental results, this paper demonstrates that analyzing vibration parameters such as clearance, impulse, peak …
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Hongyu Gao
Abstract: Visual sound synthesis (which refers to the process of recreating, as realistically as possible, the sound produced by the movements and actions of objects within a video, given specific conditions such as video content and accompanying text) is an important part of the composition of high-quality films at present. Most traditional methods of sound synthesis are based on the artificial creation of simulated props for sound effects synthesis, which is achieved by using various existing props and …
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Zhiyang Xu
Abstract: The environmental and other factors can cause data missing in power systems; thus, data reconstruction is of great significance. In this paper, we model the observed signal as time-varying signal based on graph signal processing (GSP) and establish an optimization problem with the objective of minimizing the error between the true signal and the reconstructed signal at the sampling points and improving the smoothness of the reconstructed signal. To solve the optimization problem, Taylor series …
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Ruopeng Li
Abstract: Although the accuracy of existing neural network models is high, in pedestrian tracking tasks, due to the uncertainty of targets, when tracking new targets, it is necessary to fine-tune the model, which further requires large computing and storage resource overhead. Therefore, its application on some lightweight platforms, such as robots and UAVs, is limited. Pedestrian tracking by robots and UAVs still faces great challenges in occlusion, multi-target, target loss, etc. This paper mainly solves …
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Yi Yang, Tao Wang, Wei Zhang, Yuzhou Chang
Abstract: Based on the measurement method of coordinate measuring machine flatness, establish a black box evaluation model for CMM flatness measurement uncertainty, and analyze the sources of each uncertainty. Combining measurement examples, this paper elaborates on the evaluation process of CMM flatness measurement uncertainty based on Monte Carlo, calculates the included interval and expanded uncertainty of CMM flatness, and provides reference for the evaluation of CMM flatness measurement uncertainty.
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Lixuan Li, Haijiao Lin, Tiantian Zheng
Abstract: The paper introduces the definition, main functions, and classification of the integrated passenger transportation hub from a holistic perspective; Elaborated on the definition of the basic forms of transfer and conducted corresponding comparative evaluations; Using the fuzzy analytic hierarchy process, select reasonable evaluation indicators, establish corresponding evaluation indicator system, and systematically evaluate the transfer organization of the integrated passenger transportation hub, …
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Haijiao Lin, Lixuan Li, Alibumi Zhang
Abstract: As a zero-emission, pollution-free and pure green public transport, pure electric bus has received more and more attention from society and enterprises. At present, most urban public transport lines in China have basically realized pure electric bus. With the popularization of pure electric bus, the operation and management of pure electric bus in specific areas are required. How to reasonably set the departure time interval, configure the number of vehicles and reduce the charging cost while …
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Jinghao Hu
Abstract: In this paper, a three-degree-of-freedom harvesting robot is proposed and its feasibility for harvesting fruit from shorter plants is verified, although agricultural robots are widely used in various agricultural production activities, there is a lack of adequate analysis in this field. The kinematic analysis is carried out and the kinematic parameters and trajectory equations of the manipulator are determined. A control method of the manipulator’s arm based on fuzzy neural network control is …
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