Tooth Contact Analysis of Discrete Involute Spherical Gear by Gao Xinghua, Liu Yang, Yang Ze, Yang Yitao, Xie Lanqiang

“…A new kind of the discrete involute spherical gear transmission mechanism is presented,this gear transmission mechanism can realize the transmission of the pitch motion,partial pendulum movement and rotary motion in the space and avoid the transmission principle error of the existing discrete spherical gear. …”
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PERFORMANCE OPTIMIZATION OF TRANSMISSION GEAR BASED ON OPTIMAL MODIFICATION DESIGN by HAN Wei, REN ZhiQun

“…Taking the gear transmission mechanism of a five-gear transmission as the research object,the simulation model of the gear transmission mechanism of the transmission is established by using Romax Designer software,and the load-bearing situation,transmission error and load distribution on the tooth surface of the 4 th gear are simulated and analyzed. …”
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Cooperative MAC protocol based on network coding and space-time coding by Qian-bin CHEN, Jian LIU, Yong FENG, Lun TANG

“…Aiming at the problems in wireless ad hoc networks,such as relays’ low efficiency caused by cooperation and difficult to meet the different QoS requirements,a co e MAC protocol was proposed based on the combination of network coding and space-time coding(NSTCMAC).Based on NSTCMAC protocol with the combination of Network coding and space-time coding techniques,a kind of cooperative MAC transmission mechanism that could distinguish the type of DATA packet was designed in order to meet the QoS requirements of different types of transm Further more,cooperative transmission mechanism and its performance were analyzed through Markov chain model.When transmitting the non-real-time(NR) packets,network coding was adopted to improve the efficiency of relay nodes; when transmitting the real-time(R) packets,randomized distributed space-time coding(R-DSTC)was used to enhance the reliability of transmission.Simulation results show that NSTCMAC protocol can meet different QoS requirements better,and solve the problem of relays’ low efficiency more effectively,when compared with legacy DCF、COOPMAC and CD-MAC protocol.…”
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THE FATIGUE CUMULATIVE DAMAGE PROBABILITY MODEL OF GEAR CONTACT by LV YuanBo, ZHUO Yi, ZHANG WenDong

“…For the gear transmission mechanism of a slat,based on S-N curve and linear cumulative damage theory,the reliability fatigue life caculation formula of gear contact can be obtained.In order to realize the global influence of the basic random variables on the distribution of the response performance function completely,the global sensitivities are proposed,which can provide effective theoretical guidance for optimazation and reliability design of gear.…”
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Research of Mechanical Resonance Analysis and Suppression Control Method of the Servo Drive System by Wenli Li, Yongkang Liu, Shuaishuai Ge, Daming Liao

“…Transmission mechanisms of the servo drive system are not a pure rigid body, and the existence of the elastic transmission mechanisms will make the system generate mechanical resonance. …”
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Development of a Coupled and Self-adaptive Robot Hand with Linear Empty-trip Transmission by Song Jiuya, Dang Linan, Qi Jingchen, Wei Yuangen, Zhang Wenzeng

“…The traditional coupled and self-adaptive fingers realize firstly coupling and secondly self-adaptive hybrid grasping mode with three springs and two sets of independently transmission mechanisms,which have disadvantages of complexity in mechanisms,huge consuming in power,and difficulty in spring selection.Aiming at the problem,a novel coupled and self-adaptive underactuated finger mechanism,called COSA-LET finger is designed. …”
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Research and Analysis of the Energy Saving Pulley Reducer by Fan Shiyao, Ren Xiaoming

“…In order to solve the problem of existing beam pumping unit reducer,the belt transmission mechanism is difficult to meet the long stroke and low speed,the contradiction of the energy requirements and form a complete set of small power motor,and the start from zero and real- time detection of load records can be carried out. …”
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Model Tests and FE-Modelling of Dynamic Soil-Structure Interaction by N. Kodama, K. Komiya

“…Successful improvement of the accuracy and reliability of numerically simulated results relies on a clear understanding of the seismic force transmission mechanism between the soil and a structure associated with mechanical properties of soil.…”
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Development Course and Research Question of Magnetic Gear by Jing Libing, Zhang Ting, Huang Zhangxian, Chen Junlin

“…The magnetic gear has the advantages of no friction between the rotor,simple manufacturing and installation,low cost and so on,it is an excellent transmission mechanism. The development history of magnetic gears from time to time is briefly described,and the research status of magnetic gears at home and abroad is compared. …”
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Kinematics Analysis and Dynamic Simulation of the Crank-group Driving Mechanism by Wang Yuqi, Liu Shoufa, Cao Jujiang

“…The crank-group driving mechanism is a kind of new transmission mechanism,it is mainly used in some special light industrial machinery.Based on the Newton- Raphson method,the kinematics characteristics of the crank-group driving mechanism’s structural unit is validated and calculated by using an example of MATLAB,the 3D modeling and dynamic simulation of the new mechanism is completed through SolidWorks and ANSYS,a reference for the further research and development of the mechanism is provided.…”
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Design and Simulation for Disk-type Magnetorheological Fluid Transmission Device by Zhang Qiuxiang, Ren Yankun, Wang Lifeng, Liu Xinhua, Hu Yuan

“…The magnetorheological fluid transmission device power transmission mechanism is analyzed according to the Bingham model,and a disk- type magnetorheological fluid transmission device is designed. …”
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Test and Analysis of Performance of Flat Single-axis Photovoltaic Tracking Bracket Multi-point Drive Rotary Reducers by Ma Tao, Li Wei, Chen Xuehui, Gao Ting, Li Wei, Tang Xing

“…Firstly, the installation position and transmission mechanism of the multi-point drive rotary reducer were analyzed and compared with that of the single point drive. …”
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Study on Variable-ratio Wind Turbine Gearbox Transmission Design Method by Zhao Kun, Song Yongle, Bai Houyi, Yin Xue, Hu Tingjun

“…On the basis of the transmission principle of NGW differential gear train system,several types of variable-ratio transmission mechanisms of wind turbine gearbox are studied. …”
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FRACTURE ANALYSIS AND IMPROVEMENT OF BALL SCREW STEPPED SHAFT by NIE QingFeng, YU DongHui, LI HaiHong

“…The stepped shaft of ball screw was breakaway after loading test of transmission mechanism. To solve this problem,analysis and calculations were carried out from higher hardness,material defect,machining process and experimental loading. …”
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Design and Kinematic Analysis of Rod Gear Reducer and Transmission by Zhai Guodong, Li Zhen, Zhou Youqiang, Ai Chunpei, Lan Yu, Zang Fuyu

“…Rod gear speed reducer and transmission is composed of linkage mechanism and meshing transmission. This transmission mechanism is simplified plane four-bar mechanism. …”
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Simulation Analysis of the Dynamic Performance of Multi Tooth Meshing of Filtering Reducer based on ANSYS- LS / DYNA by Lei Xiaochun, Yang Rongsong, Zhu Bingfeng, Liu Qiang, Chen Zhiliang

“…The filtering reducer structure principle and multi tooth elastic meshing effect are introduced,with the help of explicit dynamics software ANSYS / LS- DYNA,the three- dimensional nonlinear finite element contact analysis model is established,the dynamic meshing simulation of gear transmission mechanism under a certain speed and different load torque is carried out,the tooth surface contact stress,tooth root bending stress distribution and the rules of contact force changes under the condition of multi tooth contact with time are obtained,a theoretical basis for further filter reducer gear strength analysis and fatigue life calculation is provided by this method.…”
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Design of Mechanism to Eliminate the Gear and Rack Backlash Automatically by Gong Aihong, Qiu Xinqiao

“…The gear backlash is in the process of gear and rack transmission,the gear backlash needed to be eliminated to ensure the bidirectional transmission precision of the transmission mechanism. In the designed mechanical mechanism,two racks meshing gears is driven through the axial relative displacement of the mechanism of sliding lead screw nut,and an axial relative displacement between the two racks（ gear rack staggered teeth） appeared,and the equivalent tooth thickness increased,and one mechanism is designed to eliminate gears backlash automatically. …”
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Investigating Impact of US, Europe, Frontier and BRIC Stock Markets on Indian Financial Stress Index by Amanjot Singh, Manjit Singh

“…There are different transmission mechanisms ranging from trade related to fi nancial linkages. …”
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Analysis of Planetary Closed Differential Motion in RV Reducer by Zhong Feng, Huaping Chen, Guanhua Feng, Xiaogang Liu, Jianjun Liu

“…The difference between the planetary differential mechanism and the planetary closed differential mechanism is analyzed by examples of planetary transmission mechanism. The evolution process of RV reducer from one tooth differential cycloid needle wheel reducer is analyzed，the concept that the crank shaft is a negative 1 tooth sun wheel in a tooth differential meshing drive is proposed and the transmission ratio equivalent calculation is carried out. …”
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Étude des représentations sociales de la culture occitane chez les élèves de Calandretas by Grégoire Andreo-Raynaud

“…The goal is to understand social representations of Occitan culture which circulate in the students population, and their connections with cultural transmission mechanisms. In the first part, I am doing a small summary about the concepts of culture, language and heritage, and about the necessity to link these notions to analyse the sociolinguistic dynamic of Occitan language. …”
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