Study on Vibration Reduction Method by Gear Staggering Phase Tuning by Chen Gang, Wei Jing, Ju Guoqiang, Zhang Jiaxiong

“…The experimental scheme of the parallel shaft spur gear pair with different staggering phases is designed, the experimental study of vibration reduction effect of gear pair with different staggering phases is carried out, and the experimental results are compared and analyzed with the simulation results.…”
Get full text

Zeroing neural network for time-varying convex quadratic programming with linear noise by Jianfeng LI, Zheyu LIU, Yang RONG, Zhan LI, Bolin LIAO, Linxi QU, Zhijie LIU, Kunhuang LIN

“…Aiming at the problem that linear time-varying noise may have a negative impact on the existing zeroing neural network model to solve TVQP problem, resulting in slow convergence and low accuracy of the model, a double integral enhancement zeroing neural network was proposed.To solve the problem of linear time-varying interference of the noise, the double integral was introduced based on the original ZNN design formula, and a activation function was designed to eliminate the effects of linear time-varying noise.Theoretical analysis proved that the DIEZNN model had convergence and good noise suppression ability.The experimental results show that compared with the traditional gradient neural network and other variable ZNN models, the proposed DIEZNN model has faster convergence and higher accuracy, and can effectively solve the linear time-varying noise.…”
Get full text

3D Modeling Method and Strength Analysis of ZC₁ Worm by Jin Xiaoma, Ji Weixi

“…Through the data processing of finite element calculation results,the load distribution among gear teeth,the distribution of the contact stress along the direction of the worm gear tooth and the comparison between the results of the finite element method and the empirical strength formula are analyzed. …”
Get full text

Estimation and Study on the Potential of Irrawaddy River Waterway by LI Wenjie, LIU Dan, YANG Shengfa, YANG Wei, LONG Hao

“…Aiming at the development of the Irrawaddy River waterway, thispaper deduces the theoretical formula for the waterway depth based on the hydraulics, river dynamicsand available estimation methods for waterway potential, and estimates the theoretical depth of thewaterway that can be achieved in different sections of the Irrawaddy River by the measured data andempirical parameters.The results show that under the condition of 98% navigation guarantee rate ofthe Irrawaddy River, the minimum waterway development depth from Bhamo to Mandalay, Mandalay toProme, and Prome to Yangon is 2.14 m, 2.58 m and 2.75 m respectively, and the annual navigationcapacity is more than 1.8 billion tons.The research results can provide some theoretical andtechnical support for the development of the Irrawaddy River waterway.…”
Get full text

长圆形囊式气囊隔振器横纵向刚度特性研究 by 李东方, 赵应龙

“…As an effective vibration absorber,the lateral stability of the airbag isolator is closely related to the lateral stiffness.In order to understand and grasp theoretically the transverse and longitudinal stiffness characteristics of the long round bellow-type airbag isolator,according to the lateral and longitudinal force characteristics of the airbag isolator,the transverse and longitudinal stiffness of the airbag isolator from the bladder and the bearing flange were discussed.The theoretical calculation formula of the transverse and longitudinal stiffness of the airbag isolator was put forward.At the same time,the prototype of the corresponding air bag isolator was produced,the lateral and longitudinal stiffness characteristics of the long round airbag were tested.The results show that the error between theory and test results does not exceed 3%,which verifies the effectiveness of the method.And it can be determined that the stiffness provided by the capsule accounts for the main part of the lateral and longitudinal stiffness of the airbag.…”
Get full text

Real-time image matching for navigation system based on genetic algorithm by LENG Xue-fei1, LIU Jian-ye2, XIONG Zhi2

“…Moreover, the weighted Hausdorff distance algorithm based on bifurcations extraction and the corresponding weight formula was proposed. The calculation of matching search can be reduced and the accuracy of matching results can be improved by using the weighted Hausdorff distance as the fitness function of genetic algorithm. …”
Get full text

Analysis of Load Sharing Performance of Planetary Gear Reducer in Electric Vehicle Hub Motor by Zhang Jiang, Qing Xunpeng, Chen Haoran

“…The simulation results show that the planetary gear angular speed of the double floating type planetary gear system tends to be more consistent,less fluctuation and mutation during the operation process. …”
Get full text

Modeling and Simulation of Alternating Multiphase Walking with Two Legs on Human-machine Carrying Exoskeleton by Qi Chen, Fang Liu, Zhizheng Wang

“…Taking the process of multi leg replacement as the starting point，the simulation results are analyzed. The results can provide a reliable basis for the measurement and control system driven by human-machine exoskeleton.…”
Get full text

Application of Golden Sine Algorithm in Hydrogeological Parameter Optimization by ZHOU Yourong, LI Na, ZHOU Fahui

“…To improve the accuracy of hydrogeological parameters, this paper conducts the simulationverification of golden sine algorithm (Gold-SA) algorithm by six standard test functions andcompares the simulation results with that of the particle swarm optimization (PSO) algorithm, andtaking two pumping test data as examples, optimizes two key parameters, i.e. transmissivitycoefficient and storage coefficient of theis formula by the Gold-SA algorithm and compares theresults with that of the PSO algorithm, wiring method and literature method. …”
Get full text

Development and analysis of physical and mathematical models of combustion of single drops of coal-water fuel in furnaces of boiler plants by E. S. Flek

“…The results of calculation of time of burning of a drop depending on a radius of a drop and a moisture content are presented.…”
Get full text

Weighted Moving Averages for a Series of Fuzzy Numbers Based on Nonadditive Measures with σ − λ Rules and Choquet Integral of Fuzzy-Number-Valued Function by Zengtai Gong, Wenjing Lei, Kun Liu, Na Qin

“…Finally, some properties are investigated by means of convolution formula of Choquet integral. It shows that the results obtained in this paper extend the previous conclusions.…”
Get full text

On fractional Pennes bio-heat equation using Legendre collocation method by Arvind Kumar Mishra, Sushil Kumar, Ajay Kumar Shukla

“…Temperature variations concerning several parameters such as derivative [Formula: see text] time, blood perfusion, and transmitted power are described using the Legendre collocation technique. …”
Get full text

Norm inflation for the derivative nonlinear Schrödinger equation by Wang, Yuzhao, Zine, Younes

“…This ill-posedness result is sharp since DNLS is known to be globally well-posed in $L^2(\mathbb{R})$ [16]. …”
Get full text

Mean-Square Exponential Synchronization of Markovian Switching Stochastic Complex Networks with Time-Varying Delays by Pinning Control by Jingyi Wang, Chen Xu, Jianwen Feng, Man Kam Kwong, Francis Austin

“…Sufficient conditions for mean-square exponential synchronization are obtained by using the Lyapunov-Krasovskii functional, Itö’s formula, and the linear matrix inequality (LMI), and numerical examples are given to demonstrate the validity of the theoretical results.…”
Get full text

Research on E-Commerce Platform-Based Personalized Recommendation Algorithm by Zhijun Zhang, Gongwen Xu, Pengfei Zhang

“…The experimental results on real dataset verify the feasibility and validity of the algorithm and it owns higher predicting accuracy compared with present recommendation algorithms.…”
Get full text

Stochastic Stability Criteria for Neutral Distributed Parameter Systems with Markovian Jump by Yanbo Li, Chao-Yang Chen, Chengqun Li

“…Finally, a numerical example is provided to support the validity of the mathematical results.…”
Get full text

Study on Absolute Positioning Error Compensation for the Drill Rod of the Three-arm Rock-drilling Jumbo by Xia Yimin, Li Zhengguang, Luo Jianli, Ma Jiesong

“…Finally,the laser total station is used as the measuring device,and the LM algorithm is used to solve the calibration parameters to verify the kinematics calibration effect. The results show that the method effectively compensates the absolute positioning error of the drill rod,the absolute positioning error of the drill rod is reduced by 79. 6%.…”
Get full text

New Subclass of Analytic Function Related with Generalized Conic Domain Associated with q− Differential Operator by Shahid Khan, Saqib Hussain, Ilyas Khan, Amnah s. Al-johani, Mulugeta Andualem

“…For this class, we investigate structural formula, coefficient estimates, sufficient condition, Fekete–Szegö problem, and also some subordination results.…”
Get full text

FATIGUE LIFE PREDICTION FOR ROW ANGULAR CONTACT BALL BEARINGS UNDER THERMO-MECHANICAL COUPLING BASED ON FEM by JIN Yan, LIU ShaoJun, JIANG YuXiao

“…Based on the L-P fatigue life and Hertz contact theory,an mathematical model was established with the combination of Goodman formula,material P-S-N curves and EM modify rule. …”
Get full text

Unloading Groove Optimization and the Inner Flow-field Simulation Analysis of the Variable Displacement External Gear Pump by Gao Jiahe, Wang Yansong, Zhao Lihui, Guo Hui, Li Jinguo

“…A CFD model of a variable displacement external gear pump is established.The quantitative analysis method is applied to analyze characteristics of the pump inner flow field.The accuracy of the established model is verified by comparing the flux simulated and corresponding tested data.The tooth width formula of gear meshing is obtained.Through oil pressure analysis in the trapped oil area,an optimization scheme with a wedge-shape unloading groove added at the upper piston of the driven gear is proposed,which effectively reduces the pressure fluctuation of trapped oil area.The study results show that,under the condition of the same pump flux,the optimized unloading groove can reduce the pressure fluctuations in the suction and discharge chambers by 12.3% and 8%,respectively.The work is helpful for design and development of the variable displacement external gear pump.…”
Get full text