A nonlinear torsional vibration model of harmonic gear reducer and the effect of various factors on torsional vibration during start and stop

Hu, Rukang; Zhou, Guangwu; Li, Junyang

doi:10.1177/10775463211031054

Cited by 6 publications

(3 citation statements)

References 15 publications

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“…According to the structural characteristics of harmonic gear reducer, and considering the nonlinear torsional stiffness and other factors, the nonlinear torsional dynamic model of harmonic gear reducer is established in the experiment. The results show that the speed, transmission error and motor inertia are in direct proportion to the amplitude of the harmonic gear reducer, while the load inertia and damping are negatively related to the amplitude [10].…”

Section: Introductionmentioning

confidence: 95%

Design of automotive mechanical automatic transmission system based on torsional vibration reduction

Zhuan¹

2023

J. vibroeng.

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Automatic transmission system is the core part of vehicle transmission processing, which can improve driving safety. In order to improve the shift effect of automotive automatic mechanical transmission and narrow the gap between the vehicle speed and the expected speed, an automotive automatic mechanical transmission system based on torsional damping was designed in the experiment. On the basis of hardware composed of different modules and fuzzy control algorithm, the system realizes the software design of vehicle automatic mechanical transmission system. The experimental results show that when the system is applied in practice, the gear selection time of the vehicle is between 0.2 s-0.3 s, and the gear shift time is between 0.3 s-0.4 s. The gap between the vehicle speed and the expected speed, and between the vehicle speed and the expected speed is small. The practical application effect is good.

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Section: Introductionmentioning

confidence: 95%

Design of automotive mechanical automatic transmission system based on torsional vibration reduction

Zhuan¹

2023

J. vibroeng.

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“…It is a critical way to reduce the unbalanced excitation force and to improve the starting, stopping, acceleration, and deceleration performance to effectively control the spindle inertia of the aero-engine through reasonable assembly methods. 8–11…”

Section: Introductionmentioning

confidence: 99%

A novel assembly method of aero-engine rotors with minimized spindle inertia

Liu

Sun

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part B:

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Assembly is an essential part of aero-engine manufacturing, and the assembly quality will affect the engine’s stability and service life. Spindle inertia is an essential factor affecting aero-engine dynamic performance. Assembly can affect the spindle inertia of the aircraft engine, which in turn affects the dynamic performance of the engine. This paper proposes a transfer model of spindle inertia based on machining error transmission, studying the variation law of spindle inertia of multi-stage rotors under the influence of assembly, providing an optimized assembly method with minimized spindle inertia. The influence law of machining errors on spindle inertia is analyzed through the simulation and probability density method. The assembly results of the designed rotors verify the effectiveness of the inertia transfer and assembly model. The results show that the spindle inertia of multi-stage rotors is affected by machining errors, and the spindle inertia can be adjusted by changing the assembly methods. This paper provides a new idea for the transmission and adjustment of spindle inertia of assembly rotors.

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“…For the harmonic reducer, Hu et al [14] developed a nonlinear torsional dynamic model for the harmonic gear reducer and used that model to analyze the effects of various factors on the torsional vibration of the reducer. Hu's results provide theoretical guidance for the optimal design and vibration reduction of the harmonic reducer.…”

Section: Introductionmentioning

confidence: 99%

Dynamic simulation analysis and experimental study of an industrial robot with novel joint reducers

et al. 2022

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Zero-backlash high precision roller enveloping reducers (ZHPRER) possess a wide array of potential applications in the field of industrial robot because of their high precision and efficiency. This paper presents a pilot study to verify the applicability of this type of reducers in industrial robots. An industrial robot was designed, whose joint reducers were the roller enveloping reducers. A dynamic model for this robot which accounts for the dynamic responses of the reducers was also established using multibody dynamics. This dynamic model was then used for analyzing the dynamic behavior of the joint reducers and the body of the robot under different operating conditions. Simulation results yielded from the developed model were verified by comparing them with the data obtained from experiments. The present study for the first time confirms the evident advantages of ZHPRER for industrial robotic applications. Meanwhile, the proposed dynamic model for the industrial robot provides theoretical support for the subsequent design of error compensation control.

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A nonlinear torsional vibration model of harmonic gear reducer and the effect of various factors on torsional vibration during start and stop

Cited by 6 publications

References 15 publications

Design of automotive mechanical automatic transmission system based on torsional vibration reduction

Design of automotive mechanical automatic transmission system based on torsional vibration reduction

A novel assembly method of aero-engine rotors with minimized spindle inertia

Dynamic simulation analysis and experimental study of an industrial robot with novel joint reducers

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