Nonlinear Torsional Vibration Analysis and Control of Semidirect Electromechanical Coupling Transmission System in Shearer

Jiang, Song; Li, Wenyuan; Sheng, Lianchao; Chen, Jiajun; Li, Min

doi:10.1155/2019/7431239

Cited by 7 publications

(5 citation statements)

References 28 publications

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“…Mao et al 9 took the MG500/1180-WD shearer as their research object and experimentally obtained the dynamic characteristic curve of the shearer cutting units under different conditions, thereby providing experimental data for the dynamic analysis of shearer cutting sections. Jiang et al 10 established an electromechanical coupling dynamic model of the shearer cutting unit. Based on the Routh-Hurwitz criterion, the Hopf bifurcation characteristics and the type and effects of torsional vibration of the system were determined.…”

Section: Dynamical Behavior Of Coal Shearer Traction-swing Coupling Umentioning

confidence: 99%

Dynamical Behavior of Coal Shearer Traction-swing Coupling under Corrected Loads

Yang

Chen

Murai

et al. 2020

Sci Rep

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Vibration is a major concern in coal mining with a shearer, and an accurate model that allows complex responses can analyze the overall vibration of the system. The large load impact on and severe vibration of a coal shearer under operating conditions were considered. A numerical model was proposed for characterizing the nonlinear dynamics of the shearer traction-swing coupling in 13 degrees of freedom using vibration mechanics and multibody dynamics. Particularly, the contact between the shearer sliding shoe and scraper conveyor was characterized using three-dimensional fractal theory, the gapped contact between the driving wheel and base plate was characterized using Hertz contact theory, and the rigidity of the lift cylinder, the coupling between the shearer fuselage and haulage unit, and the rigidity of the shearer ranging arm were characterized using Hooke’s law. Using experimentally corrected drum loads as the external excitation, the numerical model was resolved to characterize and analyze the dynamical responses of critical shearer components. The numerical model was validated against the vibration responses of a shearer and its critical components under different operating conditions obtained from a mechanical test.The research results provide theoretical basis for the structure optimization and process parameter optimization of the shearer.

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Section: Dynamical Behavior Of Coal Shearer Traction-swing Coupling Umentioning

confidence: 99%

Dynamical Behavior of Coal Shearer Traction-swing Coupling under Corrected Loads

Yang

Chen

Murai

et al. 2020

Sci Rep

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show abstract

“…Liu et al proposed to include the calculation of all natural frequencies under different meshing conditions in the design of the transmission system, but to ignore the parameters of the meshing frequency and its frequency multiplication [6]. Jiang et al studied the electromechanical coupling torsional vibration characteristics of the gear transmission system driven by a low-speed and high-torque permanent magnet synchronous motor, and found that the electromagnetic effect reduces the first natural frequency of the system and inhibits the vibration of the gear [7][8][9]. Ge et al proposed a fuzzy control method based on active disturbance rejection and self-adaptation to suppress effectively the dynamic load of the transmission system [10].…”

Section: Introductionmentioning

confidence: 99%

Dynamic characteristics analysis for gear transmission system in shearer cutting section under different loads

Ye,

Deng,

et al. 2023

J. vibroeng.

Self Cite

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Gear transmission system is an important component of the shearer cutting part. The quality of its performance affects the reliable and high-efficiency operation of the whole system. Multi-rigid body and rigid-flexible coupling models were established respectively, and the dynamic analysis is carried out in the virtual simulation software Adams for the gear transmission system of the shearer cutting section. The dynamic characteristics of the gear transmission system under different load conditions were studied. The effects of constant load torque and step load torque on the dynamic characteristics of the drive system are explored. The research results show that the simulation results obtained from the rigid-flexible coupling model of the gear transmission system are closer to the actual operating conditions. It provides a visual means of dynamic analysis, which is more intuitive and convenient. The research methods and results can provide a reference for the further exploration of the electromechanical coupling dynamic characteristics of the motor-gear transmission system.

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“…Zhang 3 used numerical analysis method to analyze the dynamic response of their designed three-drum shearer under different working conditions. Jiang 4 , 5 established the electro-mechanical coupling torsional dynamics model for the transmission system of cutting part of the shearer, analyzed the influence of internal control parameters and drum load on the torsional vibration characteristics of the system and obtained the control method of the system in the case of large vibration amplitude and unstable oscillation. Chen 6 , 7 established a non-linear dynamics model for the traveling part transmission system of the shearer, obtained the load characteristics of the gears of transmission system and analyzed the dynamic reliability of the gears under different working parameters using fatigue damage theory; the dynamics model of the transmission system of cutting unit was established and the dynamic characteristics of the system under different working temperatures were analyzed.…”

Section: Introductionmentioning

confidence: 99%

Analysis on vertical–pitch coupled dynamics characteristics of shearer with corrected load

Yang

Chen

et al. 2021

Sci Rep

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With regard to the severe vertical and pitching vibration of shearer in actual working conditions, the vertical–pitch coupled dynamics model of shearer with 13 degrees of freedom was established using multi-body dynamics theory. Based on the elasticity theory, Hertz contact and collision dynamics, the connection stiffness model of shear body and the traction section, the rocker arm with clearance and the traction section, the support stiffness models for the guide shoe and the smooth shoe, and the stiffness characteristics model of the rocker arm were constructed respectively. Taking into account the convergence of solution process and the reliability of results, a modified drum load was proposed as the external excitation of the system and the dynamic characteristics of key parts of shearer under different working conditions were analyzed. The numerical models were validated against the vibration responses of the whole machine and critical components of shearer obtained from mechanical test under different operating conditions. The research results provide theoretical basis for the structure optimization and process parameter optimization of shearer.

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Nonlinear Torsional Vibration Analysis and Control of Semidirect Electromechanical Coupling Transmission System in Shearer

Cited by 7 publications

References 28 publications

Dynamical Behavior of Coal Shearer Traction-swing Coupling under Corrected Loads

Dynamical Behavior of Coal Shearer Traction-swing Coupling under Corrected Loads

Dynamic characteristics analysis for gear transmission system in shearer cutting section under different loads

Analysis on vertical–pitch coupled dynamics characteristics of shearer with corrected load

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