汽车的悬挂系统毕业设计詳解.doc

摘 要 ABSTRACT Automotive leaf spring is an important component of the car，Relationship with the cars safety and comfort,Research and Improvement in the rapid development of todays automotive industry, automotive leaf spring testing machine today has a very important significance.Plate spring fatigue testing machine test ,In order to know whether the objectives and requirements of automotive leaf spring ,Reduce the number of cars of defective goods ,Consumers get the maximum benefit , and effectively guarantee the safety of the consumers .So, whether from the research on the meaning and social significance，Automobile spring testing machine irreplaceable significance ,This is to ensure the healthy development of todays automotive industry.The purpose of automobile spring fatigue testing machine is designed to detect fatigue strength automotive leaf spring ,To ensure the safe operation of the vehicle.The design knowledge, including mechanical , electrical and hydraulic knowledge,Using rigorous scientific methods ,To ensure the normal operation of the entire testing machine .Finally, we use labviwe simulation software,Analog circuit section .Automobile spring fatigue testing machine is expected to be a good leaf spring fatigue strength ,Thus ensuring the safety of the people, and driving safety of the vehicle. Key words：Automobile spring；Fatigue testing machine；Electro-hydraulic servo testing machine 目 录 第1章 1 1.1 概述 2 1.2 国内外板簧疲劳试验机的主要形式 3 1.2.1 目前国内主流汽车板簧疲劳试验机 4 1.3 汽车板簧的技术条件 5 1.3.1 汽车板簧的抗疲劳检验项目以及检验方法 8 1.3.2 汽车板簧抗疲劳强度检验方法 9 第2章 汽车板簧疲劳试验机主体部分的设计 14 2.1 立柱的设计与分析 15 2.2 夹紧缸的设计 17 2.3 横梁的设计 18 2.4 横梁升降缸的设计 23 2.5 作动器的设计与校核 24 2.6 底座的计算与校核 26 2.7 油源的设计 27 2.8 伺服电机的选择 28 第3章 电气控制部分与数据的仿真 30 3.1 位移放大电路的设计 30 3.2 低通滤波器 32 3.3无限增益多路反馈 32 3.3.1 无限增益多路负反馈二阶滤波电路的特点 32 3.3.2 有源二阶低通滤波电路 32 3.4 OP07放大器 35 第4章 labviwe的应用与仿真 36 第5章 结 论 40 参 考 文 献 41 致 谢 43 附录1 外文资料 44 附录2 外文资料翻译 51 第1章1.1 概述 汽车板簧又叫做叠片弹簧