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中文摘要：
针对齿轮传动的振动噪声问题,搭建齿轮转动轴系实验台,并将一种剪切式磁流变阻尼器引入齿轮平行轴系,研究磁流变阻尼器对齿轮传动轴系振动的控制规律。采用加速度传感器,从齿轮箱体振动的角度研究磁流变阻尼器对齿轮传动轴系振动的影响,发现磁流变阻尼器可以抑制有效箱体振动,且降幅随阻尼器工作电流增加而升高,竖直方向降幅可达30%,水平方向降幅可达40%;通过分析其时、频域波形可以发现,磁流变阻尼器可以降低0-4 000 Hz各频率成分振动,尤其是降低1 000Hz以下振动成分幅值60%左右,降低3 000Hz左右振动成分幅值80%左右。应用磁流变阻尼器可以通过监测齿轮箱体振动情况,适时改变阻尼器电流来适应齿轮箱不同工况,保证箱体及传动轴振动保持在较低水平。
英文摘要：
In order to solve the problem that gearbox vibration and noise are too large, a parallel shafts system bench with gears is established to simulate the gearbox. One self-designed magneto-rheological damper is installed at each shaft. Different working conditions are set to study the influ- ences at different operating current of dampers. The acceleration sensor is used to measure the gearbox vibration in experiments, the influence of magneto-rheological damper on gear transmission shafting vibration is studied from the gearbox body vibration. The results show that the damper can reduce the vibration of the gearbox body, and the decreasing amplitude is rising with the damper working current increases. The decline of the vertical vibration is up to 30%, and the decline of the horizontal vibration is up to 40%. Through the analysis of time and frequency domain waveform, it is found that the 0-4 000 Hz frequency component of vibration can be reduced by using magneto-rheological damper, especially the vibration amplitude of lower 1000 Hz component can be reduced by 60%, the vibration amplitude of around 3000 Hz component can be reduced by 80 %. Application of magneto-rheological damper can change current to adapt to different conditions by monitoring the gear box vibration damper, which can keep the vibration of the gearbox low.
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