Effect of temperature on the transmission characteristics of high-torque magnetorheological brakes
Effect of temperature on the transmission characteristics of high-torque magnetorheological brakes
复制标题
DOI：
10.1088/1361-665x/ab134c
复制
发表时间：
2019-04
影响因子：
4.1
通讯作者：
Ningning Wang;Xinhua Liu;G. Królczyk;Zhixiong Li;Weihua Li
中科院分区：
文献类型：
--
作者：
Ningning Wang;Xinhua Liu;G. Królczyk;Zhixiong Li;Weihua Li
通过对盘式制动器、磁流变液轴向压力特性和磁流变制动器散热特性的理论分析，研究了温度对大扭矩磁流变制动器传动特性的影响。设计了一种采用水冷散热的大扭矩挤压式磁流变液制动器，建立了温度-扭矩性能实验系统进行了实验研究。实验结果表明，大扭矩挤压式磁流变液制动器具有良好的压力特性。同时，当温度从25 °C升高到150 °C时，制动力矩呈现先增大后减小的变化趋势。减小幅度约为210 Nm，从1800 Nm减小到1590 Nm。此外，磁流变液的温度呈现出几乎线性增加，在不同的转差功率和温度上升的速率增加的转差功率的增加。本研究的结果证明，有效的冷却方法可以是至关重要的高扭矩MR制动器的稳定运行。
This paper aims to investigate the effect of temperature on the transmission characteristics of high-torque magnetorheological (MR) brakes by theoretically analyzing a disc brake, the pressure characteristics of the magnetorheological fluid (MRF) in axial, and the heat dissipation of an MR brake. A high-torque squeezing MRF brake with a water cooling method for heat dissipation is designed and a temperature-torque performance experimental system is established to conduct the experiments. The experimental results indicate that the high-torque squeezing MRF brake exhibits workable pressure characteristics. Meanwhile, the braking torque presents a variation trend that is initially increasing then decreasing when the temperature increases from 25 °C to 150 °C. The magnitude of decrease is approximately 210 N m, which decreases from 1800 to 1590 N m. Moreover, the temperature of the MRF presents an almost linear increase at different slip powers and the rate of temperature rise increases with an increase in slip power. The findings of this study prove that an effective cooling method can be vital to the stable operation of the high-torque MR brakes.