Results 21 to 30 of about 2,722 (144)
MathematicsIn view of the problems of the complex design, difficult machining, and high manufacturing cost of a traditional nutation reducer, this paper intends to design a nutation reducer and study its meshing performance.
Haoyu Chen, Qinghai Li, Chao Jia
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EVALUATION OF OUTER CORE VISCOSITY INFLUENCE ON THE EARTH FORCED NUTATION
Odessa Astronomical Publications, 2007 On the base of the combined method, consisting of the Sasao, Okubo, Saito (1980) approach with the iteration procedure, allowing couple finite element method with the solution of the Laplace equation, it have evaluated the influence of outer core ...
M. V. Lubkov
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Photonics, 2023 The signal-receiving end of acquisition, pointing, and tracking (APT) systems applied to intersatellite laser communication terminals usually uses a fast-steering mirror (FSM) to control the fiber-coupling process, has a complex structural design, and ...
Bo Peng +6 more
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Optimal Design of Single-stage Double-arc Spiral Bevel Gear Nutation Reducer
Jixie chuandong, 2020 According to the nutation motion principle，a new single-stage double circular-arc spiral bevel gear nutation reducer with simple structure and large transmission ratio is designed， and its transmission ratio calculation formula is obtained.
Zheng Lin +3 more
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The effect of the differential rotation of the earth inner core on the free core nutation
Geodesy and Geodynamics, 2019 Seismic observations shows that the inner core rotates faster than the mantle and the rotation axis of the inner core may not align with the rotation axis of the mantle. Free core nutation reflects core's information.
Mian Zhang, Chengli Huang
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Evaluation of the first three years of Vgos 24 h sessions using a Kalman filter with C5++
Earth, Planets and Space, 2023 We analyzed the first three years of VGOS 24 h sessions, and evaluated the performance in terms of Earth orientation parameters (EOP) and station positions.
Periklis-Konstantinos Diamantidis +1 more
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IEEE Access, 2019 Considering the wear in mechanical bearings and the requirement for sensors or electrical power in active magnetic bearings, a novel nutation blood pump using a passive magnetic spherical bearing was developed in this paper.
Gang Chen +4 more
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Micro-motion Recognition of Spatial Cone Target Based on ISAR Image Sequences
Journal of Aerospace Technology and Management, 2016 The accurate micro-motions recognition of spatial cone target is the foundation of the characteristic parameter acquisition. For this reason, a micro-motion recognition method based on the distinguishing characteristics extracted from the Inverse ...
Changyong Shu +4 more
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The Kinematics of Plant Nutation Reveals a Simple Relation between Curvature and the Orientation of Differential Growth. [PDF]
PLoS Computational Biology, 2016 Nutation is an oscillatory movement that plants display during their development. Despite its ubiquity among plants movements, the relation between the observed movement and the underlying biological mechanisms remains unclear.
Renaud Bastien, Yasmine Meroz
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Jixie chuandong, 2023 In the research of nutation magnetic drive, the torque density of gears is an important index to evaluate its performance. Thus, the analysis and optimization of the magnetic torque is particularly important.
Lou Meiyan, Yao Ligang, Guo Chenxian
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