Results 201 to 210 of about 1,075 (258)

Reliability Model for Planetary Gear Trains

Journal of Mechanisms, Transmissions, and Automation in Design, 1983
A reliability model is presented for planetary gear trains in which the ring gear is fixed, the sun gear is the input, and the planet arm is the output. The input and output shafts are coaxial and the input and output torques are assumed to be coaxial with these shafts. Thrust and side loading are neglected.
M. Savage, C. A. Paridon, J. J. Coy
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Topological Synthesis of Planetary Gear Trains

Applied Mechanics and Materials, 2010
Application of topological graphs to analyze and synthesize planetary gear trains (PGTs) is an effective approach in searching for innovative planetary trains. Two topological graphs of basic structure and three fundamental units of PGTs are established as the basis of topological synthesis.
Ya Feng He, Qing Yu, You Ming Wang
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Planetary Gear Train Dynamics

Journal of Mechanical Design, 1994
A model to simulate the dynamic behavior of a single-stage planetary gear train with helical gears is developed. The three-dimensional dynamic model includes all six rigid body motions of the gears and the carrier. The generic nature of the formulation allows the analysis of a planetary gear set with any number of planets.
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Gear Trains and Planetary Gears

2020
In this chapter, the general concepts of ordinary gear trains are first described, particularly those concerning their efficiency and the obtainable transmission ratios. The same concepts are then extended to planetary gear trains and various methods of calculating the transmissions ratios achievable with these types of gear drives are defined.
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Planetary gear train for robotics

IEEE International Conference on Mechatronics, 2005. ICM '05., 2005
A recursive matrix model concerning the geometric analysis, kinematics and dynamics of a Bendix wrist planetary bevel-gear train for robotics is established in this paper. The prototype of this mechanism is a three-degree-of-freedom system with seven links and four bevel gear pairs. Controlled by electric motors, three active elements of the robot have
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Displacement isomorphism of planetary gear trains

Mechanism and Machine Theory, 1994
Abstract This paper presents an efficient method for the identification of the displacement isomorphism of planetary gear trains with any number of gear pairs. For every plantary gear train, the corresponding displacement graph and rotation graph are used to characterize its kinematic structure.
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Dynamic Analysis of Helical Planetary Gear Train

Applied Mechanics and Materials, 2013
A dynamic model for helical planetary gear train (HPGT) is proposed. Based on the model, the free vibration characteristics, steady-state dynamic responses and effects of design parameters on system dynamics are investigated through numerical simulations. The free vibration of the HGPT is classified into 3 categories. The classified vibration modes are
Xian Zeng Liu, Jun Zhang
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Survey of dynamics of planetary gear trains

International Journal of Materials and Structural Integrity, 2008
Planetary gear trains (PGT) have been widely used in many industries due to their unique advantages over parallel shaft gear trains. With increased demand for high speed and low vibration and low noise machinery, dynamic analysis of PGT has gained importance.
Jianming Yang, Liming Dai
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The Analysis of Planetary Gear Trains

Volume 2: 30th Annual Mechanisms and Robotics Conference, Parts A and B, 2006
The Generalized Lever is a new tool in gear train representation. It extends the traditional concept of a lever representation of a planetary gear set to one that includes negative lever ratios. This allows an exhaustive permutation of the nodes of a lever, thereby leading to all possible topological arrangements of a planetary gear train. Consequently,
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Analytical geometry method of planetary gear trains

Science China Technological Sciences, 2012
This paper presents an analytical geometry method for kinematics and efficiency of planetary gear trains (PGTs). The novel method which is capable of evolution and contrast analysis of mechanism kinematics, can be applied to any typical one- and two-degree-of-freedom plane PGTs containing any number of simple, compound or complex-compound planetary ...
XiaoAn Chen, Hong Chen
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