摘要
为了提高电磁-液压复合制动系统的紧急制动性能,设计了一套既适用于电磁制动特性,又适用于液压制动特性的电磁-液压复合制动系统,按系统结构建立了液压制动系统数学模型,分低速区和高速区分别建立了电磁制动数学模型。在1/4车辆模型受力分析的基础上,设计了滑模变结构控制器,搭建了硬件在环仿真平台,模拟沥青路面和冰雪路面进行了防抱死制动系统(ABS)性能仿真实验,并同商业ABS在同等条件下的实验结果进行了对比分析。实验结果表明:电磁-液压复合制动系统相比传统液压制动系统而言,响应速度更快,滑移率控制更精确,车辆制动稳定性更高,制动时间也有小幅减少,同时还减小了机械磨损,并降低了热衰退和失效的风险。
In order to promote the performance of the electromagnetic-hydraulic hybrid brake system when sudden stop occurs, a kind of hybrid system which adapts electromagnetic and hydraulic braking system was developed; it built a hydraulic mathematical model and a mathematical model of electromagnetic brake system which is different in low speed and high speed. Based on the force analysis of the 1/4 vehicle model, a sliding mode controller has been designed and hardware in loop experiment platform has also been constructed. The experiment which simulates on asphalt and ice road was made to compare with the commercial ABS at the same conditions. The results indicate that the hybrid brake system has more rapid responds time, more stable slip ratio controlling ability and less brake time than traditional hydraulic brake system. And at the same time, due to the electromagnetic braking system, the system＇ s abrasion and the braking heat fading or thermal failure is falling.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2014年第5期1-7,共7页
Transactions of the Chinese Society for Agricultural Machinery
基金
国家自然科学基金资助项目(51275212)
江苏省2012年度普通高校研究生科研创新计划资助项目(CXZZ12_0664)
2012江苏省汽车工程重点实验室开放基金资助项目(QC201203)
关键词
复合制动系统
液压
电磁
滑模控制
硬件在环仿真
Hybrid brake system
Hydraulic
Electromagnetic
Sliding mode control
Hardware in loop simulation
