INITIATIVE DESIGN AND VISUALIZATION OF THE SINGLE-LOOP PLANETARY TRANSMISSION SYSTEM

2016 ◽  
Author(s):  
Bao-Feng Zhang ◽  
Ya-Hui Cui ◽  
Kai liu ◽  
Hou-Xin Li
Keyword(s):  
Transmission System ◽  
Single Loop ◽  
Planetary Transmission

Modeling and Simulation for Dual-Drive Transmission System of TBM Based on Bond Graph

2010 ◽  
Vol 44-47 ◽  
pp. 1703-1707
Author(s):  
Chao Lin ◽  
Xin Hong Su ◽  
Da Tong Qin ◽  
Song Song Yu
Keyword(s):  
High Power ◽  
Dynamic Performance ◽  
Graph Model ◽  
Tunnel Boring Machine ◽  
Bond Graph ◽  
Transmission System ◽  
State Equations ◽  
Response Curves ◽  
Tunnel Boring ◽  
Planetary Transmission

The dual-drive system to be used in the tunnel boring machine (TBM) is a new kind of high-power planetary transmission system. On the basis of the system’s transmission theory and the bond graph principle, the bond graph model of the dual drive transmission system is established and then the state equations are deduced. Based on this model, dynamic performance of the system is simulated by means of MATLAB/Simulink and the dynamic response curves of the speed and torques are acquired. The simulation response illustrates that the bond graph model of dual drive transmission systems is accurate. In addition this system is suitable for three types of TBM and can satisfy the requirements of dramatic changes of load in the running of TBM.

Dynamic Model of Automatic Transmission System of Tracked Vehicle

2013 ◽  
Vol 397-400 ◽  
pp. 369-373 ◽  
Author(s):  
Jun Yi ◽  
Shui Sheng Chen ◽  
Da Zhang You
Keyword(s):  
Regression Analysis ◽  
Dynamic Model ◽  
Intelligent Control ◽  
Automatic Transmission ◽  
Torque Converter ◽  
Transmission System ◽  
Simulation System ◽  
Tracked Vehicle ◽  
Planetary Transmission ◽  
Test Result

The dynamic characteristic of automatic transmission system of tracked vehicle was thorough analyzed. The primary characteristic of torque converter was proposed by means of regression analysis of test result. The dynamic model of three-freedom planetary transmission was constituted using drive principles of planetary transmission. Thus the foundation of intelligent control and simulation system of automatic transmission of tracked vehicle was established.

Influence mechanism of multi-coupling error on the load sharing characteristics of herringbone gear planetary transmission system

2019 ◽  
Vol 233 (4) ◽  
pp. 792-816
Author(s):  
Shuai Mo ◽  
Ting Zhang ◽  
Guoguang Jin ◽  
Zhanyong Feng ◽  
Jiabei Gong ◽  
...  
Keyword(s):  
Error Control ◽  
Load Sharing ◽  
Transmission Error ◽  
Transmission System ◽  
Main Role ◽  
Influence Mechanism ◽  
Planetary Transmission ◽  
Herringbone Gear ◽  
Assembly Error ◽  
Coupling Error

The load sharing characteristics of the herringbone planetary transmission system are a key indicator for evaluating the bearing stability and reliability of each planet gear in the transmission system. The value of the load sharing coefficient is closely related to the manufacturing error and the assembly error in gear processing and assembly process. Therefore, it is indispensable to study the influence mechanism of these errors on the load sharing characteristics of the transmission system. Nevertheless, researches on the multi-coupling transmission error to the load sharing characteristics of herringbone planetary transmission system did not receive enough attention, but much of the single errors. Based on the centralized parameters theory and the Lagrange method, this research establishes a dynamic model for herringbone planetary transmission system and creatively proposes a study of multi-coupling error which consists of eccentric error, tooth profile error, stagger angle and assembly error. This work shows that the changing regulation of the load sharing characteristics with any one of the above errors is different. However, the load sharing characteristics become worse with the increase of multi-coupling error, in which the eccentric error plays a main role. Therefore, the error control should focus on eccentric error.

scholarly journals Power Flow and Efficiency Analysis of High-Speed Heavy Load Herringbone Planetary Transmission Using a Hypergraph-Based Method

2020 ◽  
Vol 10 (17) ◽  
pp. 5849
Author(s):  
Yun Wang ◽  
Wei Yang ◽  
Xiaolin Tang ◽  
Xi Lin ◽  
Zhonghua He
Keyword(s):  
Power Loss ◽  
High Speed ◽  
Power Flow ◽  
Transmission Efficiency ◽  
Transmission System ◽  
Flow Diagram ◽  
Mechanical Transmission ◽  
Loss Mechanism ◽  
Heavy Load ◽  
Planetary Transmission

The existing research problem is that the hypergraph-based method does not comprehensively consider the power loss factors of the mechanical transmission system, especially the existing windage power loss. In the power flow diagram, it is difficult to express and calculate the power loss separately, based on the power loss mechanism. Furthermore, the hypergraph-based methods purposed by some researches are not suitable for high-speed and heavy-load conditions. This paper presents a new hypergraph-based method for analyzing the transmission efficiency of complex planetary gear trains. In addition, a formula for calculating transmission efficiency is derived. The power loss model is established for a high-speed heavy-load herringbone planetary transmission pair considering several sources of power losses such as gear meshing friction, windage, and bearing friction. Then, the efficiency of a two-stage herringbone planetary transmission system is calculated using the proposed method. Furthermore, the influence of input speed, input power, and lubrication state on transmission efficiency is investigated. Finally, the proposed method is verified by comparing calculated values with values published in the literature.

Research on Torsional Dynamic Model and Rigidity Excitation of Cycloid Ball Planetary Transmission System

2011 ◽  
Vol 86 ◽  
pp. 775-778
Author(s):  
Peng Zhang ◽  
Zi Jun An ◽  
Zuo Mei Yang
Keyword(s):  
Differential Equations ◽  
Dynamic Model ◽  
Frequency Spectrum ◽  
Transmission System ◽  
Parametric Vibration ◽  
Vibration System ◽  
Transmission Process ◽  
High Order Harmonic ◽  
Harmonic Components ◽  
Planetary Transmission

A torsional dynamic model of the cycloid ball planetary transmission system is established with considering the direction changing of engagement force and the multi-balls engagement in transmission process. By analyzing the position relationships of each engagement force and the displacement relationships of each component, the governing differential equations of system as well as the dimensionless equivalent engagement rigidities of each transmission disc are derived, and the frequency spectrum of the engagement rigidity excitation is present. The results show that the cycloid ball planetary transmission system is a parametric vibration system. The engagement rigidity excitation between the center disc and the planetary disc is a periodic and time-variant function, and the high-order harmonic components are included in the frequency spectrum.

scholarly journals A Dynamic Investigation of the Impact Failure Analysis of the Friction Plate in a Planetary Transmission System

2020 ◽  
Vol 25 (4) ◽  
pp. 577-586
Author(s):  
Shenlong Li ◽  
Shuhan Zhou
Keyword(s):  
Transmission System ◽  
Radial Clearance ◽  
Clear Understanding ◽  
Gear Teeth ◽  
Impact Forces ◽  
Multibody Dynamic ◽  
Friction Disc ◽  
Friction Plate ◽  
Planetary Transmission ◽  
The Impact

A clear understanding of both vibrations and the impact forces of planetary transmission systems is very helpful for decreasing impact failures of their friction discs and preventing serious accidents of the system. This study presents a multibody dynamic (MBD) investigation based on a commercial MBD software to predict the vibrations and impact forces of the friction disc in a planetary transmission system. In the MBD model, the radial clearance of the planet bearing is formulated, as well as the backlash between the outer gear teeth of the ring and friction disc teeth. However, the previous works in the literature only considered single radial clearance or backlash. The influences of the radial clearance of the planet bearing and backlash between the outer gear teeth of the ring and friction disc teeth on the vibrations and impact forces of the friction disc in the planetary transmission system are studied. The results give that a smaller radial clearance and backlash can be useful for decreasing both the vibrations and impact forces of the friction disc in the planetary transmission system. The MBD method can be applied to predict the vibrations and impact forces in the planetary transmission system as well.

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