考虑偏心挤压的磁流变制动器制动性能分析与优化
Research and Optimization on Performance of Magnetorheological Brake in Consideration of Eccentricity Compression
- 机械传动 2022年46卷第6期 页码：95-101
- 作者机构：
1.重庆理工大学 机械工程学院， 重庆 400054
- 作者简介：
陈松（1979— ），男，河南南阳人，工学博士，副教授；主要从事智能材料及传动方面的研究。
- 基金信息：国家自然科学基金(51875068);重庆市自然科学基金(cstc2020jcyj-msxmX0402);重庆市教育委员会科学技术研究项目(KJQN201901120)
DOI：10.16578/j.issn.1004.2539.2022.06.014
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陈松,蔡天伍,黄金等.考虑偏心挤压的磁流变制动器制动性能分析与优化[J].机械传动,2022,46(06):95-101.
Chen Song,Cai Tianwu,Huang Jin,et al.Research and Optimization on Performance of Magnetorheological Brake in Consideration of Eccentricity Compression[J].Journal of Mechanical Transmission,2022,46(06):95-101.
陈松,蔡天伍,黄金等.考虑偏心挤压的磁流变制动器制动性能分析与优化[J].机械传动,2022,46(06):95-101. DOI： 10.16578/j.issn.1004.2539.2022.06.014.
Chen Song,Cai Tianwu,Huang Jin,et al.Research and Optimization on Performance of Magnetorheological Brake in Consideration of Eccentricity Compression[J].Journal of Mechanical Transmission,2022,46(06):95-101. DOI： 10.16578/j.issn.1004.2539.2022.06.014.
摘要
针对均匀间隙磁流变制动器制动力矩较低、制动效率低的问题，根据磁流变液挤压增强效应原理，设计了偏心式磁流变制动器，建立了偏心式磁流变制动器制动力矩模型；分析了工作间隙、偏心率及偏心距对制动力矩的影响规律，基于Sobol法对制动器结构尺寸参数进行全局灵敏度分析，以偏心制动器制动力矩为目标进行了结构尺寸优化。结果表明，偏心率对制动力矩影响最大，且偏心制动器制动力矩随偏心率增大而增大；偏心率从,,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=35436837&type=,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=35436832&type=,11.00666618,2.70933342,到,,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=35436847&type=,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=35436842&type=,11.00666618,2.70933342,变化时，制动力矩从38.3 N,,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=35436866&type=,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=35436862&type=,1.86266661,2.62466669,m提升到51.9 N,,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=35436866&type=,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=35436862&type=,1.86266661,2.62466669,m；偏心距对制动力矩影响较弱，且制动力矩随偏心距的增大而减小，在偏心距,,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=35436875&type=,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=35436871&type=,1.43933344,2.62466669,大于1后，影响效果不明显；优化后的偏心制动器制动力矩达到86.3 N,,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=35436886&type=,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=35436882&type=,1.86266661,2.62466669,m，较优化前提高了约35.27%；在磁流变液达到磁饱和时，偏心结构对制动器制动力矩提升约7.57%。
Abstract
Aiming at problems of low braking torque and transmission efficiency of the gap of uniform clearance magnetorheological fluid brake and according to the principle of squeeze enhancement effect of magnetorheological fluid，an eccentric magnetorheological brake is designed and the braking torque model of eccentric magnetorheological brake is established. The effects of working clearance，eccentricity and eccentric distance on braking torque are analyzed. Based on Sobol method，the global sensitivity analysis of structural parameters of the brake is carried out. Optimization is carried out taking the maximum braking torque of eccentric MRB as the objective. The results show that eccentricity has great impact on the braking torque， the braking torque of eccentric brake increases with eccentricity； it rises from 38.3 N,,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=35436918&type=,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=35436914&type=,1.86266661,2.62466669,m to 51.9 N,,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=35436918&type=,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=35436914&type=,1.86266661,2.62466669,m when the eccentricity changes from 0.1 to 0.2； the eccentric distance has a slight influence on the braking torque， the braking torque decreases with the increase of eccentric distance； the effect is also decreased when the eccentric distance is greater than 1. After optimization， the brake torque reaches at 86.3 N,,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=35436918&type=,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=35436914&type=,1.86266661,2.62466669,m，with an increase of 39.73% compared with the previous design. When the magnetorheological fluid reaches magnetic saturation，the braking torque is increased by 7.57% due to the eccentric structure.
关键词
磁流变液偏心挤压强化灵敏度分析优化设计
Keywords
Magnetorheological fluidsEccentricityExtrusion strengtheningSensitivity analysisOptimal design
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