Numerical Characteristic of Gear System Attractor in Phase Space based on G-P Algorithm of Correlation Dimension by He Lin, Matthias Rätsch, Sanmin Wang, Guangshen Xu

“…In order to depict the numerical characteristic of the attractor structure in phase space for gear system effectively, a nonlinear dynamical spur gear transmission model including backlash and general transmission error is established, the calculation formula of equispaced gear system correlation dimension is deduced based on G-P algorithm. …”
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MAGNETICMEMORY TESTING OF METAL PIPE CRACK by LIU Jun, HUANG Chen, CHENG Shaowei, HE Xing

“…Based on the experiment,a calculation formula with good accuracy is suggested to determine the crack length and is proved by the experiment result.…”
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THEORETICAL STUDY ON THE CRASHWORTHINESS OF CORRUGATED TUBE by ZHANG Ping, MA Jian, NA JingXin

“…The theoretical analysis method was proved with the simulation results. Based on the theoretical analysis and numerical simulation effects of geometric parameters on the mean crush load were studied. …”
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Study on a Stratified Sampling Investigation Method for Resident Travel and the Sampling Rate by Fei Shi

“…The stratified sampling rate formula and the sampling rate of each layer have been derived in detail according to Probability Theory and Mathematical Statistical Methods. …”
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Design and Analysis of a New Type of Metal Belt Continuously Variable Transmission by Zhang Wu, Guo Wei, Lu Zhengxiong, Cao Jianbo

“…Through the comparative analysis the constraint condition of two kinds of CVT metal belt ring and wire rope in six degrees freedom,the result shows that the WR- CVT has a stable working state of MB- CVT. …”
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Design and Analysis of Discrete Adjustable Radius Pulley Continuously Variable Transmission by Yuegang Chu, Yun Peng, Hao Zi, Kunpeng Zhao, Aiping Song

“…The relationship between the size parameters of the discrete adjustable radius pulley transmission structure and the transmission ratio is analyzed. The calculation formula of the critical friction force of the discrete adjustable radius pulley transmission is derived. …”
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Performance analysis of cost function based energy-efficient routing protocol in WSN by LIU Xing-cheng1, YUAN Dong-sheng1, LIANG Ping-yuan1, ZHANG Xiao-yu1

“…,the product of energy consumption and delay.At the same time,the performance of CEERP was simu-lated further on condition that the sensor nodes were deployed sparsely and the channels were non-ideal respectively.The results show that the comprehensive performance in terms of the product of energy consumption and delay of the CEERP outperforms that of other similar protocols.…”
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Design and Analysis of a Chuck-type Adjustable Diameter Continuously Variable Transmission by Ning Mei, Aiping Song, Chenwei Yu

“…In addition, the dynamics simulation based on Adams is carried out, and the experimental device of chuck-type adjustable diameter CVT is developed to test and verify. The results show that the drive speed of the new CVT is stable and meets the requirements of vehicle use.…”
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Pilot Position Optimization Design of WLAN System Based on Experiment by Jue Lan, Yunzhou Li, Xin Su, Shidong Zhou

“…Considering the frame structure of IEEE 802.11ac with “leading preamble plus comb-like pilot”，the performance evaluation formula of the correction scheme based on maximum likelihood estimation was derived，according to which the effect of pilot location，channel fading and subcarrier correlation was studied.Furthermore，a signalling exchange method was proposed，which ensured pilot position synchronization on both end，and a low complexity algorithm of pilot optimization according to the frequency channel amplitude information.In this way，the pilot overhead can be reduced without loss of correction performance.The experiment and simulation result shows that for ideal Rayleigh channel data，correction performance improves by 1.85 dB and 7.15 dB for unknown channel amplitude information in frequency domain and known cases respectively.For field experiment channel data，correction performance improves by 1.67 dB and 2.68 dB respectively.…”
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Theory and system research of communication with tracking and pointing function for hunter robot by YU Yang1, MIN Fu-hong2, NI Xiao-wu1, ZHANG Hong-chao1

“…Eye-hole wave communication frame was proposed first time.Tracking and pointing model of communication was put forward.New era of short distance optical communication was pioneered.Acguisition method of beaconing light was researched and acquisition time was computed.Two dimension pointing error normal distribution and rayleigh dis-tribution were simulated.Dithering Rician distribution of target pointing was simulated.Attenuation losing formula of receiving len’ diaphragm detection was calculated and simulated.Three dimension pointing error normal distribution and rayleigh distribution were proposed.Three dimension rayleigh fold dithering distribution was proposed.Simulation re-sults are computed and the results is shown.The concept of eye-hole wave communication is proposed first time.The two dimension and three dimension theory model of tracking/pointing dithering problem of robot are put forward and attenua-tion model is presented also.…”
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Dynamics Analysis of Self-balancing Mechanism for Wounded-transfer Robot by Chunyan Zhang, Maosheng Li, Xiangyu Liu, Yu Wan

“…The degree of freedom is analyzed by using screw theory and tested by the modified G-K formula. By utilizing the closed vector, the solution to the inverse kinematics and the relation between the length of each driving rod and the posture of the moving platform are obtained. …”
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Design and Simulation of a Robot for Hand Rehabilitation based on Wirerope- noose Transmission by Zhang Caihua

“…Lastly,the mechanical property of wirerope transmission is analyzed and the calculation formula of tension in wirerope is calculated at arbitrarily space attitude.…”
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Analysis of the Relationship of Video Text and Urban Image Communication Based on the Calculation Method of Wedge Diffraction in Geometrical Optics by Qi Sun

“…Based on the calculation method of wedge diffraction in geometrical optics, various heuristic uniform diffraction formulas of lossy wedge are compared and analyzed, and a better heuristic formula of uniform diffraction of lossy wedge is given. …”
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STUDIES ON THE GROUND RESPONSES OF CIRCULAR OUT-OF-PLANE OSCILLATORY FOCUS IN HALF-SPACE by WANG Ping

“…The variations of the ground displacement and the tangential shearing stress around the boundary of the circular oscillatory focus were discussed by a given example,and the results showed the effectiveness.…”
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Analysis of the Composite Transmission of Magnetorheological Fluids and Shape Memory Alloy by Chen Song, Jian Kailin, Huang Jin, Huang Xia

“…The magnetorheological effect of magnetorheological fluid reduce under a high temperature condition,which causes so many problems like the uncontrollability of the variation of shearing stress,and even failure of the transmission device.Based on the rheological property of magnetorheological fluid and the temperature characteristics of shape memory alloy,a composite transmission device of magnetorheological fluid and shape memory alloy is designed,which rely on magnetorheological fluid to transfer torque under a lower temperatures condition,shape memory alloy spring assisted power transmission when the magnetorheological performance reduce under a high temperature condition.The performance of drive force transmission device is analyzed,and the formula of power transmission of transmission device is derived.The study results show that the composite transmission device can work at the external magnetic field and the temperature control,the torque can maintain continuous,controllable under a high temperature condition,the stability and efficiency of transmission device are improved.…”
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Kinematics Analysis and Simulation of Line-driven Hedge Trimming Manipulator by Xue Zan, Luo Tianhong, Chen Cai

“…The inverse kinematics of redundant manipulator is studied by genetic algorithm, and the inverse kinematics of redundant manipulator is solved. The simulation results show that the genetic algorithm has high accuracy and fast solution. …”
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COMPARISON BETWEEN HB AND AGMA BEVEL GEAR STRENGTH CALCULATION STANDARD by LI XiangYu, LIU ShaoJun

“…In this paper similarities and differences in Bearing Capacity Calculation of Aviation Bevel Gears（ HB / Z89.1 ^HB / Z89.4-85） and Rating the Pitting Resistance and Bending Strength of Generated Straight Bevel,Zerol Bevel and Spiral Bevel Gear Teeth（ ANSI / AGMA 2003-B97） were analyzed and compared.It was compared in scope,calculation principle,fundamental rating formulas,correction factors and calculation example such several aspects.The strength evaluation value was introduced to make it easy for comparison.The two standards have their own characteristics according to the research results.The former’s correction factors are considered more comprehensive,and the correction factors are subject to theoretical calculation; the latter’s calculation is simple and the correction factors are mainly based on experience formula and test data.The contact strength evaluation value of the former is larger than the latter,while the bending strength evaluation value is smaller.At last the conclusion is the former’s strength rating is more conservative.…”
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A Novel Discrete DGM (2, 1, t2) Model Based on Stochastic Oscillation Sequence and Its Application by Jun-Lin Xu, You-Jun Chen

“…Secondly, the quadratic time power term is introduced to establish a novel discrete DGM (2, 1, t2) model, then derive a novel simulation prediction formula, and analyze properties of this novel model; it was concluded that its application scope is expanded. …”
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Learning the simplicity of scattering amplitudes by Clifford Cheung, Aurélien Dersy, Matthew D. Schwartz

“…Starting from lengthy input expressions, our networks can generate the Parke-Taylor formula for five-point gluon scattering, as well as new compact expressions for five-point amplitudes involving scalars and gravitons. …”
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The Statistical Properties of Conversational Speech Level of Chinese People and the Check of Speech Level Moni-toring Systems by Bao Ziwei

“…Moreover, the speech powers were calculated from the so called "Talker’s level" formula of Fletcher rather than from spherical wave, because of the scattering effect of head and torse must be taken into accournt.…”
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