Influence of Two-stage Tooth Profile Modification on Transmission Accuracy of Robot Precision Reducer by Xuetao Qiao, Ke Jia, Cunfu Yan, Ze Yang, Peng Wang, Fang Li

“…The model of the whole machine is introduced into Adams to establish a virtual prototype，and the kinematics simulation is carried out to obtain the angular velocity curves of involutes planetary gear，cycloid wheel and planetary frame. …”
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NEW STRATEGY THE FOR DESIGNATION OF THE INTEGRITY PARAMETER IN SBAS POSITIONING IN AIR TRANSPORT by Magda MROZIK, Jarosław KOZUBA, Kamil KRASUSKI, Janusz ĆWIKLAK, Mieczysław BAKUŁA, Bilal BELDJILALI

“…The developed mathematical scheme was verified on real GNSS kinematic data recorded by two onboard Septentrio AsterRx2i and Trimble Alloy receivers installed on a Diamond DA 20-C aircraft. …”
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Application of Low-Intensity Laser in the Treatment of Skeletal Muscle Injury in Runners by Youdong Chen, Qiang Li

“…The subjects were allowed to run at three speeds: slow, medium, and fast. The kinematics, dynamics, and surface EMG signals of the subjects during running were collected to analyze the effect of low-intensity laser therapy on exercise muscle strain. …”
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A Method of Constructing Tooth Surface Without Backlash for Conical Line Gear by He Enyi, He Di, Wu Haihua, Du Yixian, Ye Xicong

“…According to tooth surface equations, a 3-D model is established and kinematics simulation experiment is carried out. The result shows that the conical LG constructed by this method can realize the smooth transmission process with the designed transmission ratio. …”
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Research on Integrated Guidance and Control of Distributed Cooperation of Multi-Interceptor with State Coupling by Xiang Liu, Xiaogeng Liang

“…Secondly, the cooperative control strategy of the multi-interceptor is designed with the “leader-follower” distributed network mode to obtain the speed in the three directions of the interceptor in air and transform them to the general flight speed, trajectory inclination angle, and trajectory deflection instruction by using the transformational relation of kinematics. Finally, the “follower” controller is designed with the FTDO and dynamic surface sliding-mode control. …”
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Statistics of Finite Scale Local Lyapunov Exponents in Fully Developed Homogeneous Isotropic Turbulence by Nicola de Divitiis

“…According to the hypothesis of fully developed chaos, this statistics is here analyzed assuming that the entropy associated with the fluid kinematic state is maximum. The distribution of the local Lyapunov exponents results in an unsymmetrical uniform function in a proper interval of variation. …”
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Dynamic Response of Shear-Flexible Cylindrical Isotropic Shells with Clamped Edges by Zafer I. Sakka, Jamal A. Abdalla, H.R.H. Kabir

“…In this paper an analytical investigation to the free vibration response of moderately-thick shear flexible isotropic cylindrical shells with all edges clamped is presented. The Sander’s kinematic relations for moderately thick cylindrical shell panels are utilized to develop the governing partial differential equations in conjunction with the boundary conditions. …”
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Heavy-duty Casting Robot Trajectory Planning Based on the Law of Composite Polynomial Motion by Wang Chengjun, Yang Lin, Li Long, Shen Yuzhe

“…The degree-of-freedom of the actuator is calculated by the topological structure theory of the robot mechanism, and the position of the parallel mechanism is solved by the closed-loop vector method, the kinematic position equation of the hybrid mechanism is derived according to the equivalent method and the geometric method. …”
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Vector Bond Graph Method of Kineto- static Analysis for Hybrid Driving Five Linkage Mechanism by Wang Zhongshuang, Wang Xifeng

“…For improving the reliability and efficiency of the kineto- static analysis for hybrid driving linkage mechanism,the corresponding vector bond graph method is proposed. Based on the kinematic constraint condition of planar translational joint,the more concise vector bond graph model of planar translational joint is built. …”
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Realtime Precise Orbit Determination Technology for LEO Mega-Constellation by Zhen LI, Chuang SHI

“…Supported by GNSS, it analyzed the advantages and disadvantages of solving LEO satellite orbit on the ground or onboard the satellites.The high-fidelity non-conservative force models were applied to the real-time orbit determination algorithm.To separate the kinematic and dynamic orbit determination process had been a great advantage for LEO satellites with much frequent orbital maneuvers.The test results showed that the accuracy of accelerations computed from the radiation pressure and atmospheric drag non-conservation force models were around 5 nm/s².Use the broadcast ephemeris, the real-time orbit determination algorithm could get an accuracy of 0.8 m in the satellites′ positions and 1.1 mm/s accuracy in the satellites′ velocity.When the real-time precise ephemeris of GNSS satellites were provided, the algorithm could get an accuracy of 8 cm in the LEO satellites′ position and 0.1 mm/s in the velocity.The method for real-time orbit determination and orbit prediction in this paper could be used to support the construction of navigation system with the mega-constellations.…”
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Optimizing Generative Design for Cam Curve Through NURBS Approach based on Objective Constraint by Li Linwen, Lu Bo, Xiao Yang, Zhao Zhe

“…The results yield to a generative motion that satisfy the prescribed terminal conditions that include performance criteria related to kinematic,geometry,pressure angle as well as undercutting property of the system. …”
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Design of a New Type of Arm Joint Training Instrument with Multi-posture and Multi-motion Forms for Family Use by Wenjun Xu, Jianfeng Zhou, Liwen Zheng, Yuzhen Lin, Huifen Zhu

“…Through theoretical design and calculation， and based on NX， a forward kinematic analysis and comparison of the four-bar mechanism without rapid return is conducted， 3 sets of rod length parameters (corresponding to 2 attitudes， 3 different motion forms， 9 different motion parameters respectively) are determined as a design scheme， and the force balance and load change analysis of the arm joint training equipment are carried out by the design scheme. …”
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MULTI-OBJECTIVE OPTIMIZATION DESIGN OF ROADHEADER’S CUTTING HEAD BASED ON THE GA by ZHAO LiJuan, FAN JiaYi

“…In order to improve the dynamic reliability of the roadheader,the roadheader’s rigid-flexible coupled model was established based on virtual prototyp,dynamic reliability analysis was done on the rotary table of different structural parameters,evaluation function was established based on mechanical optimization design theory,the function’s design variables was half cone angle,helix Angle and cutting line spacing, the function’s objective function was the minimization of maximum equivalent stress as the objective function.The cutting head’s optimal structural parameters was obtained by genetic algorithm.Based on the cutting productivity and rotary table equivalent stress, the optimal yawing speed was obtained by optimized multi-objective.The results shows that after two optimizations,rotary table maximum stress is decreased 18.495 MPa,the fatigue life is improved from 3.067 E4 to 3.326 E6,productivity is improved 18.6 t/h,prediction error is less than 1.3%,meet the design requirement.This method provides data support for the structure and kinematic parameters of cutting head,provides a new method for the optimization design of heavy complicated mechanical equipment.…”
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Structure Design of Variable Diameter Walking Wheel based on Tensegrity Structure by Jianwei Sun, Daohao Sun, Yipeng Luan, Wenrui Liu, Guangsheng Song

“…The basic tensegrity walking unit of the variable diameter wheel is designed after the analysis of two-bar and three-cable plane tensegrity mechanism. The kinematics analysis of the tensegrity variable diameter unit is carried out by using the principle of minimum potential energy， and the parameters of the walking wheel are obtained by Matlab software. …”
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Position Control Using Trajectory Tracking and State Estimation of a Quad-rotor by Onur Sarıpınar, Muharrem Mercimek

“…Mathematical modeling involves creating a holistic model of the various subsystems of the aircraft including aerody-namic, kinematic, dynamic and control systems. The control system is a mechanism used for the aircraft to perform the desired movements. …”
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Exclusion Limits on a Scalar Decaying to Photons and Distinguishing Its Production Mechanisms by Tanumoy Mandal

“…We show that combining various kinematic variables in a multivariate analysis can be very powerful to distinguish different production mechanisms from one another.…”
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Molecular Detection of <i>Acetobacter aceti</i> and <i>Acetobacter pasteurianus</i> at Different Stages of Wine Production by Irina Mitina, Cristina Grajdieru, Rodica Sturza, Valentin Mitin, Silvia Rubtov, Anatol Balanuta, Emilia Behta, Angela Deaghileva, Fatih Inci, Nedim Hacıosmanoğlu, Dan Zgardan

“…Thus, it would be advantageous to detect them using molecular methods at all stages of winemaking and storage. In this paper, we analyzed wines, musts and grapes of 13 varieties grown in different regions with Protected Geographical Indication of the Republic of Moldova for the presence of AAB, <i>Acetobacter aceti</i> and <i>Acetobacter pasteurianus</i> by real-time PCR and measured wine volatile acidity. …”
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Influence of lubricant type on churning power loss of worm gear by Hardik G. Chothani, Devendra J. Marsonia, Nisha N. Jadeja, Sanjay H. Zala, Ketan S. Vaghosi

“…According to the experiment results, churning power loss values for mineral oil are 20 – 25 % greater than those of synthetic oil, which has almost the same kinematic viscosity at a temperature of 40 °C.…”
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Bi-directional extensional control of the Berane Basin formation, northern Montenegro by Stefanović Katarina, Krstekanić Nemanja

“…In this paper, we conducted field kinematic analysis by applying fault‐slip inversion to derive paleostress regimes and study the deformation phases that led to the formation of the Berane Basin. …”
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Error Analysis and Error Allocation for Turntable Systems Used in GyroWheel Calibration Tests by Yuyu Zhao, Hui Zhao, Xin Huo, Yu Yao

“…Subsequently, an error model of the turntable system is derived using rigid body kinematics, by which the relationship between the orientation error and turntable errors is described. …”
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