Sliding bifurcation research of an electromechanical coupling drive system containing friction under external excitation

2016 ◽  
Vol 51 (1) ◽  
pp. 21-36
Author(s):  
Shuang Liu ◽  
Zheng Wu ◽  
Yatao Shi ◽  
Jinjin Wang
Keyword(s):  
Electromechanical Coupling ◽  
Drive System ◽  
External Excitation ◽  
Sliding Bifurcation

Electromechanical Coupling Vibration of Rolling Mill Excited by Variable Frequency Harmonic

2014 ◽  
Vol 912-914 ◽  
pp. 662-665 ◽  
Author(s):  
Yi Fang Zhang ◽  
Xiao Qiang Yan ◽  
Qi Hui Ling
Keyword(s):  
Torsional Vibration ◽  
Rolling Mill ◽  
Electromechanical Coupling ◽  
Drive System ◽  
Current Signal ◽  
Output Current ◽  
Coupling Vibration ◽  
Current Harmonics ◽  
Electric Drive System ◽  
Frequency Harmonic

Using torque telemetry system to test the mechanical drive system of rolling mill,it is found that the torsional vibration and current signal in the electric drive system have the same obviously vibration frequency. The model of cycloconverter, synchronous motor and mechanical drive system of rolling mill are built and analysed by Matlab/Simulink and ANSYS.The simulation results show when the harmonic torque frequency and the torsional vibration natural frequency of for mechanical drive system are equal or close, the strong torsional vibration arouse It is proved that the convertor output current harmonics can induce the electromechanical coupling vibration of main mechanical drive system under the certain conditions.

Study on Electromechanical Coupling Vibration of Simulation Technology Based on the Drive System

2013 ◽  
Vol 676 ◽  
pp. 289-292 ◽  
Author(s):  
Hong Ying Wang
Keyword(s):  
Degrees Of Freedom ◽  
Electromechanical Coupling ◽  
Dynamic Performance ◽  
Drive System ◽  
Coupling Vibration ◽  
Ac Drive ◽  
Mass Damper ◽  
Coupling Factors ◽  
Vibration Simulation

Study the mechanical and electrical system,according to the mechanical system of the coupling mechanics principle, the AC drive system is simplified as many degrees of freedom "spring - mass - damper" system,the quality of construction of three two-axis system,established the two shafts electromechanical coupling vibration mathematical model; Using the electromechanical coupling vibration simulation model, the parameters of the current regulator, damping, harmonic disturbances, gap and load disturbance of electromechanical coupling factors such as vibrations caused by dynamic process.Improve the dynamic performance of the system is significant, have the great value for the parameters of the system design and fault diagnosis on this study.

Dynamic characteristics analysis and experimental of differential dual drive servo feed system

2021 ◽  
pp. 095440622110179
Author(s):  
Hanwen Yu ◽  
Laigang Zhang ◽  
Chong Wang ◽  
Xianying Feng
Keyword(s):  
Degrees Of Freedom ◽  
Electromechanical Coupling ◽  
Simulation Analysis ◽  
Drive System ◽  
Ball Screw ◽  
Parameter Method ◽  
Feed Speed ◽  
Feed System ◽  
Stick Slip ◽  
Low Speed

This paper presents the design for a new differential-dual-drive low-speed micro-feed mechanism. The ‘nut rotary ball screw pair’ is the main driving component of the mechanism. The screw and nut are each driven by a servo motor and these motors rotate in the same direction at a similar speed. The nonlinear factors such as friction and backlash can lead to unstable behaviours such as stick-slip and oscillation of the feed system. We use the Euler–Bernoulli beam elements, which have axial and torsional degrees of freedom, to describe the axial and torsional vibration of the ball screw, and use the spring-lumped parameter method to analyse other components of the feed system. An electromechanical coupling dynamic model with nonlinear factors of friction and clearance is established. Through simulation analysis and experiment, the difference in response of single-drive and differential-dual-drive systems under the influence of friction and clearance is studied. The results show that the nonlinear factors of friction and clearance have an influence on the feed speed of single-drive and differential-dual-drive system, but the low-speed micro-feed performance of the differential-dual-drive system is evidently better than that of the single-drive system. In the experiment, under the condition of screw single drive and differential dual drive, the critical crawling velocities of the table are measured. The experimental results are consistent with the simulation results, which verifies that the established models are reasonable. This lays a foundation for the design and research of the controller.

Sliding bifurcation research of a horizontal–torsional coupled main drive system of rolling mill

2015 ◽  
Vol 83 (1-2) ◽  
pp. 441-455 ◽  
Author(s):  
Shuang Liu ◽  
Zhaolong Wang ◽  
Jinjin Wang ◽  
Haibin Li
Keyword(s):  
Rolling Mill ◽  
Drive System ◽  
Sliding Bifurcation ◽  
Main Drive System

scholarly journals Application of Simulation Software in Optimization of Powertrain of Pure Electric Vehicle

2020 ◽  
Vol 10 (11) ◽  
pp. 42-55
Author(s):  
Baoqi Ma ◽  
Zhenping Wan ◽  
Zhibiao Hu ◽  
Zhantong Li ◽  
Chongyang Han ◽  
...  
Keyword(s):  
Electric Vehicles ◽  
Electromechanical Coupling ◽  
Simulation Software ◽  
Drive System ◽  
Heat Transfer Analysis ◽  
Technical Problems ◽  
The Core ◽  
Noise Optimization ◽  
Drive Motor ◽  
Core Components

— Pure electric vehicles are a research hotspot in today's new energy vehicle industry. Its core is the electromechanical coupled drive system (drive motor and gearbox), and its performance affects the overall performance of pure electric vehicles. The application of industrial software for electromagnetic design, electrothermal design, electromagnetic vibration and noise optimization of drive motors, heat transfer analysis, fatigue analysis, and noise optimization analysis of gearboxes has become important technologies for designing and manufacturing the core components of electromechanical coupling drive systems.This article analyzes the current status and existing problems of the development of simulation software for the core components (drive motor and gearbox) of the electromechanical coupling drive system of electric vehicles, and proposes solutions to key technical problems, and proposes the development direction of unified simulation of drive motor and gearbox on the electromechanical coupling platform

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