Research on the Optimization Strategy of the Speed Ratio Control Parameter of Vehicle Swing Pin Chain CVT by Guo Wei, Li Yuankai, Zhang Wu, Jia Gaoxiang

“…The results show that the speed ratio fuzzy control based on genetic algorithm is better than the traditional fuzzy PID control method in the following effect and error variation of the target speed ratio，and meets the requirements of the swing pin chain CVT speed ratio control.…”
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STUDY ON VIBRATION CHARACTERISTICS OF THE POLYGON EFFECT OF SCRAPER CONVEYOR by ZHANG DongSheng, YU HaiYang, ZHAO XiBei, SONG ZhenDuo

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Network quality and user perception improvement of high-speed rail scene by Songbai LIANG, Yingwu GUO, Xinwei LI

“…In view of the difficulty in improving the quality of mobile network in high-speed railway scenes and the poor efficiency of conventional methods, a methodology system for improving the perception of mobile communication users was explored in traffic trunk lines, especially in high-speed railway scenes.The methodology system was based on handover chain optimization with the core idea of “primary covering, reasonable reselection and orderly switching”.It adopted a three-layer theoretical structure include covering control firstly, then parameter optimization, and feature loading last.It used idle state and service state data pull graph correlation to determine problem road sections and cells, match the delay parameters of high-speed mobile scenes, load service quality and perception characteristics, and greatly improved the high-speed railway network quality and user perception.This method started from the principle analysis, with practical application, it could effectively solve the network problems, which could be fully extended to other linear scenes.…”
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Extrusion Hole Test for Improving Fatigue Strength of the Chain Plate of Bucket Lift by Diao Zhonghua, Liu Feng, Tang Chuanchang

Subjects: “…High speed and heavy load…”
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Fibrolytic efficiency of the large intestine microbiota may benefit running speed in French trotters: A pilot study by Maximilien Vasseur, Romuald Lepers, Nicolas Langevin, Samy Julliand, Pauline Grimm

“…An incremental running test was carried out to estimate the maximal running speed (MRS) of the horses, and blood samples were taken to measure energy metabolism parameters. …”
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Uncovering the hidden mechanics of upper body rotations in tennis serves using wearable sensors on Dutch professional players by B. van Trigt, B. van Trigt, E. Faneker, E. Faneker, A. J. R. Leenen, A. E. Hoekstra, M. J. M. Hoozemans

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Study on the Wearability Test Bed for the Oversized Chain by Shi Jingbi, Wang Shungong, Zhao Youkun, Wang Kui, Liu Yi

“…The characteristics of the oversized chains under the condition of pressure spray oil lubrication over 56B，such as wearability，power capacity and other characteristics of running in different speed and load can be tested，the technical data for the chains developers is provided.…”
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Research of Crawl Phenomenon of Chain Propulsion Equipment by Zhai Wang, Liu Jia, Qin Li

“…The elastic characteristics of the chain will cause the load speed change regularly,and produce resonance with the sprockets easily. …”
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Data traceability mechanism based on consortium chain by Shoucai ZHAO, Lifeng CAO, Xuehui DU

“…With the unprecedented growth in the speed of data generation and circulation in the era of big data, the emergence of blockchain technology provides a new solution for data authenticity verification.However, with the increasing demand for data flow between different blockchains, new security issues arise.Cross-chain data transmission can lead to data leakage, and detecting data leakage caused by illegal access becomes challenging.To address these problems, a data traceability mechanism based on a consortium chain was proposed.A cross-blockchain data traceability model was designed, incorporating private data pipelines to ensure the security of cross-chain data transmission.User behaviors were recorded through authorization and access logs, ensuring the traceability of illegal unauthorized access.To improve the efficiency of data traceability and query, an on-chain and off-chain synchronous storage mechanism was adopted.The state of data flow before each transaction was encrypted and stored in the database, and its index was stored in the blockchain transaction.This enables a one-to-one correspondence between on-chain and off-chain data.Additionally, Merkle trees were introduced into the block body to store block summaries, enhancing the efficiency of block legitimacy verification.Based on the data storage form and cross-chain data interaction mechanism, a data traceability algorithm was designed.The traceability results were displayed in the form of an ordered tree.An experimental environment for consortium chain traceability was built using fabric, targeting the cross-domain data traceability scenario in the e-commerce industry.The GO language was used to simulate and test the data traceability performance with a large number of blocks and transactions.The results demonstrate that with the increasing number of blocks and transactions, the proposed data traceability mechanism maintains satisfactory performance.…”
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Research of the Allowable Velocity of Chain Drive of Quantitative Conveyor by Shang Shibo, Wang Honglei, Yuan Hua

“…According to the loading speed requirements of the 50 tons skip loading by quantitative conveyor,to improve the operation reliability of the transmission chain under overload and at the velocity of 1.2m/s,the combination and optimization of sprocket tooth z,chain pitch pand allowable speed v optimization are solved.A method to predict the chain allowable speed is presented,according to the existing small-pitch chain parameters from GB/T 5269-1985,the theoretical formula and the relationship curves between p&vare determined by MATLAB data fitting model,the large pitch chain allowable speed is solved.The calculation shows that p=200 &z=12meet the requirements of the loading speed and nearly consistent with TSUBAKI’s sample.The results provide a theoretical basis for design and ordering of prototype,also can provide a reference for parameter selection of large chain.…”
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Fluctuation Characteristic Analysis on Scraper Chain Transmission System by Jixin Wang, Junxia Li, Yuan Wang

“…To analyze the speed and acceleration fluctuation characteristics of the scraper chain transmission system during the meshing process, a double-sided contact fluctuation model is constructed, the correctness of the model is verified by experiments. …”
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Chaining ＆ counter-based block cipher mode for authentication by HUANG Yu-hua1, HU Ai-qun2, WANG Jian-dong1

“…For raising the operation efficiency of block cipher algorithms,a fast authentication mode based on chaining ＆ counter（CCTR） was put forward;and its security was proved.Its speed was about 30% faster than that of authentication modes in common use（for example,CBC-MAC）.The dependence test results accord with the demands.The CCTR mode is complete;its degree of avalanche effect is about 0.999 3;its degree of strict avalanche criterion is 0.992 or so.The frequency test results indicate that the output generated by the CCTR mode had uniformity.The binary matrix rank,Run,spectral,non-overlapping template matching,overlapping template matching,Maurer’s universal statistical test,Lempel-Ziv compression,linear complexity,serial,approximate entropy,cumulative sums,random excursions and random excursions variant tests results fulfilled the requirements all.Therefore,the CCTR mode has good pseudo-randomness,which the security of CCTR mode is verified by way of statistical evaluation.…”
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Designing a causal model of factors affecting the Lars supply chain by mojtaba khalesi, mojdeh rabani, Hasan Dehghan Dahnavi, Abolfazl Sadeghian, mohammad taghi honari

“…Research Findings The findings showed that the Lars supply chain dimensions include the dimensions of sustainable supply chain, resilient supply chain, agile supply chain, lean supply chain, along with 16 indicators of supplier management, supporting suppliers, multiple distribution channels, waste elimination, timely production, logistics management, continuous improvement, flexibility, competence, speed, communication with customers, responsiveness, agility, economic, environmental, and social. …”
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Analysis of the Noise Characteristic of Automotive Engine Timing Chain System by Xu Shuxin, Ye Bin, Fan Chengyan, Meng Fanzhong

“…In the process of test,the emphasis should be put on the mechanical noise of the timing drive chain and the camshaft. Compared to other forms of chain transmission noise test,it is more close to the actual operating conditions of timing chain system. …”
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Dynamic Investigation in Green Supply Chain considering Channel Service by Qiuxiang Li, Mengmeng Li, Yimin Huang

“…The conclusions are as follows: the stable scope of the green supply chain system enlarges with decision makers’ risk-aversion level increasing and decreases with service value increasing; excessive adjustment of price parameters will make the green supply chain system fall into chaos with a large entropy value; the attraction domain of initial prices shrinks with price adjustment speed increasing and enlarges with the channel service values raising. …”
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Movement Analysis and Fatigue Life Analysis of the Plough Chain of Coal Plough by Mao Jun, Yao Xu, Chen Hongyue

“…By using the Matlab,the simulation analysis is carried out,the time course of plough chain tension and speed in different condition plough cut resistance are got. …”
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Study on Dynamic Load Characteristic of Multi Axis Silent Chain System by Xu Shuxin, Xing Jianheng, Wang Hongjun

“…By using the cylinder head anti drag system test bench,through static and dynamic load torque test,the load coefficient and the method of determining under different speed conditions of the timing silent chain system are proposed,which is of great reference value to the design of the multi axis and high speed silent chain system.…”
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Development and Experimental Research of the Chain Transmission Motion Characteristic Test Rig by Li Yongjian, Lu Tianwei, Wu Luming, Mei Songwei

“…The overall design,measurement and control system of chain transmission test rig are described.A lot of experimental test is finished by the developed test rig.The experimental results show that chain transmission speed fluctuation curve and the unevenness coefficient curve is acquired by the test rig comply with the variation laws on the theoretical calculation.Also the high-precision and reliability is verified through the results.The analysis of experimental results has important guiding signification in practical engineering applications of transmission.…”
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Analysis and Simulation of the Creeping Phenomenon of Roller Conveyor Chain based on Recurdyn by Liu Yu, Zhao Juntian

“…The creeping phenomenon is a common instability phenomenon of chain transmission. Because of the roller conveyor chain often use to transfer power and convey material in the low speed,heavy duty and poor working environment,it more easily happen the creeping phenomenon to affect the normal operation of the conveyor chain. …”
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Study on the Wear-resisting Performance of Automobile Engine Timing Sleeve Chain by Xu Xiuqin, Zhao Jianxiang, Meng Fanzhong

“…The wear test of 05 CT automobile engine timing chain of slit sleeve and seamless sleeve is carried out,the results show that,under the same experimental conditions,the pin and sleeves of two different forms all have cyclic softening phenomenon more or less after the chain went through high-speed wear test,and the softening degree of slit sleeve is less than that of the seamless sleeve. …”
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