The purpose of vibration and noise control of gear transmission is mainly to improve the dynamic performance of the transmission system and the working environment of the operator, which is different from the purpose of dynamic design in the bearing capacity design. The dynamic design is mainly to reduce the dynamic load of the transmission system and improve the bearing capacity of the transmission system.
1. Gear vibration control
The research literature of gear drive vibration control mainly includes the vibration modeling and control of multi-stage power shunt drive, the vibration analysis and control under multi working conditions and variable loads, and the influence of friction on vibration characteristics. LAN et al. Established the dynamic model of multi-stage shunt gear transmission system, obtained the time history curve of vibration acceleration and noise spectrum, analyzed the influence of gear parameters on dynamic response and structural noise, and reduced thenoise to about 10dB by adjusting the gear design parameters. Xiang et al. Studied the torsional and translational natural vibration characteristics of two-stage planetary gear system, and the sensitivity of the natural characteristics to mass, moment of inertia, meshing stiffness, bearing stiffness and coupling stiffness. Heider et al. Studied the vibration excitation behavior of planetary gear transmission system and its influencing factors. Giacometti et al. Realized the vibration control of the vehicle’s power transmission system under multi working conditions and variable loads through targeted measurement and simulation. Magyar et al. Established the friction and dynamics model of worm drive, and analyzed the influence of friction on the vibration characteristics of worm drive.
2. Noise control
The research literature of gear drive noise control mainly uses statistical energy method to predict vibration and noise, acoustic psychological evaluation of gear noise, objective evaluation of gear noise causing mood upset, gear noise control based on load contact analysis, modeling analysis and experiment of automobile gear knocking noise, etc. According to the basic principle of statistical energy analysis, Liyan et al. Proposed a statistical energy analysis model to predict the noise of gearbox. In order to predict the user’s response to gear noise, Brecher et al. Proposed psychoacoustic evaluation method to evaluate the noise of gearbox, and verified the effectiveness of the method through experimental analysis and numerical simulation. Lutz proposed to describe the user’s uneasiness caused by gearbox noise objectively by using the synthesized psychoacoustic value, so as to realize the analysis and evaluation of gearbox noise. Borner et al. Put forward the calculation model of noise excitation based on load contact analysis, so as to realize the low noise design of transmission device. Albert et al. Established a noise analysis model based on gear knock simulation to evaluate the knock noise level and noise source of automobile gearbox. Kadmiri et al carried out theoretical and Experimental Research on the knock noise of automobile gearbox, pointing out that the knock noise is closely related to the impact recovery coefficient, excitation amplitude and resistance moment of the system.