Research of the Vibration Characteristic in the Operation Process of the Long Distance V-ribbed Belt Drive Drilling Tool Transport System by Yu Qian

“…Aiming at the problems of long distance drilling tool transport system has high manufacturing cost,maintenance difficulty,the V- ribbed belt drive is introduced into the long distance drilling tool transport system,and the system mathematical model is established. The key components of the tensioning device are optimized through optimization design,and the optimization results are verified by the experiment method. …”
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Dynamical Analysis of a Pest Management Model with Saturated Growth Rate and State Dependent Impulsive Effects by Wencai Zhao, Tongqian Zhang, Xinzhu Meng, Yang Yang

“…A new pest management mathematical model with saturated growth is proposed. The integrated pest management (IPM) strategy by introducing two state dependent pulses into the model is considered. …”
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Simulation Study and Experimental Validation of Automated Mechanical Transmission Vehicle Transmission System based on Simscape by Tang Zhiyao, Zhang Bangji, Wang Ming, He Xiong, Kong Guoling

“…The traditional modeling method of simulation and study of Automated Mechanical Transmission（ AMT） powertrain for vehicle is using simulation platform to establish the mathematical model of AMT powertrain presently,but this method has a heavy workload. …”
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Multi-objective Optimization Design for a Kind of Three-translation Parallel Robot Mechanism by Zhiyuan Ma, Wei Zhu, Hanbing Li, Kanrong Gu, Chuanwei Wang, Jiuwei Shi

“…The optimization mathematical model is set up with the optimization goal of workspace and global dexterity. …”
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Study on Meshing Efficiency of Non-circular Gear based on Elastohydrodynamic Lubrication by Wanshan Liu, Hao Peng, Zhiqin Cai, Xiaofan Ma

“…Based on the analysis of the meshing characteristics of non-circular gear and the law of equal engagement angle of tooth profile， considering the influence of relative speed， friction coefficient， oil film thickness， and other key factors on the loss of meshing power， a novel mathematical model for the meshing efficiency of non-circular gear transmission under the elastohydrodynamic lubrication condition is established. …”
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Study on Tooth Profile Parameter of Gear Skiving Under the Influence of Multiple Factor by Zhongliang Qiu, Siming Wang

“…Finally， on the basis of the mathematical model， the influence of the rotational speed of tool and workpiece， tool feeding speed， helix angle of the tool and shaft angle on tooth profile deviation and tooth profile runtout are analyzed. …”
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Theoretical model of homogenized piezoelectric materials with small non-collinear periodic cracks by Jean M. Nianga, D. Marhabi

“…Contrary to the previous investigations, the focus of this paper is the development of a mathematical model taking the non-parallelism of cracks into account…”
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Analysis of Forces and Fatigue Life of the Sun Wheel in Shearer Planetary Reducer by Mao Jun, Guo Jianfeng, Chen Hongyue

“…According to the characteristics of coal cutting drum of shearer,the stress of drum is analyzed,the mechanical model of planetary reduction gear solar wheel’ s torque,instantaneous rotational speed and tangential force are obtained.By using the MATLAB software,the simulation of the derived mathematical model in sun wheel is carried out,with the pick position angle changes,the variation images of the solar wheel’s torque,instantaneous rotational speed and tangential force are obtained.Finally,the damage value under different loads is obtained by experiment,and based on the application of the Miner’s linear cumulative damage,the life of sun wheel is analyzed,it reaches a conclusion.For further optimal design of small size,high power of shearer provide a reliable theoretical basis.…”
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RELIABILITY BASED ROBUIST DESIGN OPTIMIZATION OF WIND TURBINE GEAR BOX BASED ON DYNAMICS by WANG ChunGuang

“…In order to meet the design requirements of large wind turbine gearbox with high reliability,good dynamic characteristics and high robustness,based on the system dynamic model and considering the correlation among the failure modes,a multi-objective optimization design mathematical model is developed from the perspective of system dynamics,reliability,robustness and volume. …”
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Analysis of time delay jitter of communication system on fault location of power line based on traveling wave method by Mingzhen LI, Jianming LIU, Hang WANG, Wenjun ZHOU

“…In order to study the time delay jitter of communication system on fault location of power line,a mathematical model of the delay jitter based on Poisson distribution was presented.The characteristic of the random delay jitter for single and multiple node cases were analyzed.Results show the delay jitter is remarkable when the communication load is high,and is insensitive when the communication load is low in the single node case.The total delay jitter is lower than the sum of the jitter in the queues on a path,and the position of the heavy load node in the path has a large influence on the total path jitter.The delay jitter with its influencing factors should be taken into account to perform optimal network design.…”
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Energy efficient cooperative spectrum sensing algorithm in cognitive wireless sensor networks by Gui-cai YU, Cheng-zhi LONG, Man-tian XIANG

“…A novel energy-efficient scheme of cooperative spectrum sensing in cognitive wireless sensor networks is proposed.Firstly,in order to reduce energy consumption of distributed sensor nodes,and assumed that instantaneous SNR and average SNR for each node is available.The mathematical model of spectrum sensing nodes energy consumption and optimum detection threshold are analyzed. …”
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Adaptive Sliding Mode Tracking Control for Unmanned Autonomous Helicopters Based on Neural Networks by Min Wan, Mou Chen, Kun Yan

“…In this paper, an adaptive sliding mode tracking control scheme is developed for the medium-scale unmanned autonomous helicopter with system uncertainties and external unknown disturbances. A simplified mathematical model is established, which is divided into position subsystem and attitude subsystem. …”
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Research of Reachable Workspace of 2-RPR+RRP Spherical Hybrid Mechanism by Zhao Jianwen, Song Shengtao, Li Ruiqin, Li Dahai

“…Secondly,taking the geometric relation of mechanism as the constraint condition and combining with the rotation matrix,the mathematical model of the closed positive solution of the kinematics position of the mechanism is established. …”
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Deployment strategy for static chargers in WRSN by Hao HE, Yong-rui CHEN, Wei-dong YI, Ming LI

“…The traditional deployment strategy of static chargers in wireless rechargeable sensor networks (WRSN) covers all the area.The basic idea is to cover all the positions of nodes.A mathematical model of distance between a charger and the farthest node was established,the relationship between the number of nodes and the mathematical expectation of minimum radius of charging was analyzed,and deployment strategy for static chargers was proposed.The method based on the locations of all nodes that need to be charged in the area,used the smallest enclosing circle (SEC) algorithm and finds the optimal location of the charger through Euclidean delivery boy algorithm.It will decrease charging radius,reduce the minimum required transmitted power,thereby saving the average charging energy consumption.The experimental results demonstrated that the less the number locations that the nodes existed,the more energy will be saved.…”
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THE EVOLUTIONARY-PRACTICAL ORIENTATION OF TRAINING MASTERS-CREATORS by Nadezhda M. Melnik

“…Based on the analysis of the mathematical model of the process of professional activity, concluded about need the implementation of the evolutionary-practical approach to training of Masters, which improves the intelligence up to the fourth level by resonant coupling of extensive and intensive learning.…”
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Account of Mechanical Characteristics of Generalized Drive in Algorithm of Fast-Acting Self-Start of High-Voltage Synchronous Motors by V. V. Kourganau, U. V. Kryshneu, B. A. Vyaryga

“…Object of the investigation is control systems of high-voltage synchronous motors which are applied at industrial enterprises with continuous technological process.A mathematical model for the run-out of generalized assembly including a motor and a mechanism has been developed. …”
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Design and Analysis of Back Lifting Mechanism of Modular Multifunctional Nursing Bed by Dianxing Xu, Hui Fang, Li Wang, Ping Yuan

“…By analyzing and comparing the advantages and disadvantages of the existing back lifting mechanism，a two-fold back lifting mechanism is designed，and the corresponding mathematical model of motion is established. With the help of Matlab,the theoretical motion analysis is carried out, and it is compared with the simulation results of Adams kinematics to verify the rationality of the mechanism design. …”
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On the decay of strength in Guilin red clay with cracks by Yi Li, Keneng Zhang, Baochen Liu, Zongyuan Pan

“…In order to research the effect of cracks in red clay on shear strength through dry-wet cycle test, the experimenters used imaging software and a mathematical model to determine fractal dimension and crack ratio of surface cracks in red clay in Guilin, China. …”
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Service-based network as a platform: research on a new information communication network architecture by Xiaoyun WANG, Xiaodong DUAN, Tao SUN

“…The deployment of 5G enables the network to expand from serving individuals to the industry.The evolution of mobile communication system was analyzed, and a new architecture development direction-service-based network as a platform was proposed.Facing the fundamental challenge of diversified requirements of industrial scenarios, the new architecture employed “platform” to address the generalization and scalability obstacles, and employed “service” to address heterogeneous characteristics of the network.The network service level assurance could also be guaranteed.The definition, overall architecture and mathematical model of “service-based network as a platform” were given.Based on the innovative practice of 5G service-based architecture (SBA) design, the principles of service design were proposed, and then the hierarchical design ideas were given.…”
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Application study of Costas arrays in multiuser radar systems by YAO Jian-guo1, HUANG Qing2

“…The construction and performance of frequency hopping codes were discussed but the emphasis was laid on the construction of Costas arrays.The frequency hopping codes called Costas arrays could be designed to have almost ideal auto-ambiguity and good cross-ambiguity.A mathematical model was established for frequency hop coded waveforms and the conditions for orthogonal sub-pulse were given.The auto-and cross-correlation properties of Costas arrays were illuminated,the practical properties of cross-correlation function of permutation matrices were revealed,the algorithms for computing ambiguity function were presented and the simulation results were demonstrated.After a study of the cross-ambiguity properties of Costas arrays the ways were suggested to reduce interference in a multiuser radar system.…”
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