摘要本课题根据汽车安全带固定点试验台的开发研究进行设计计算，为满足汽车座椅及安全带固定点强度试验需要，研制了汽车座椅及安全带固定点强度试验台。该试验台采用电液伺服系统为加载机构，具有9个加栽通道，能实现单轴或多轴同步加载试验。每个通道能进行位置伺服控制和力伺服控制加载试验。该试验台机械台架结构强度高，机械机构功能灵活，能针对不同车型自行调整工装位置，满足各种车型多种试验安装要求。该试验台多功能集成，在本试验台可以进行安全带固定点强度试验、座椅强度试验、客车座椅强度试验以及靠背静刚度试验等试验项目。采用了变增益等控制方法，有效提高试验系统加载精度，在复杂负载变化工况下仍能保持较好性能，具有较强的鲁棒性能。49107

毕业论文关键词：汽车安全带；固定点；试验台；液压伺服系统

Abstract

According to the automobile safety belt fixed point test bench development study of design and calculation, in order to meet the needs of car seats and seat belt fastened point intensity test, developed a car seat and seat belt fastened point intensity test bench. The test uses the electrohydraulic servo system for loading mechanism, has 9loading channel, can realize single or multi-axis synchronous loading test. Each channel can position servo control and force servo control loading test. The test machine frame structure of high strength, flexible mechanical function, can according to the different models of self adjusting tool position, to meet the various models of a variety of test installation requirements. The test table of functional integration, in this test bench can be performed safely with fixed point strength test, strength test, seat passenger seat backrest strength test and static stiffness testing project. A variable gain control method, the effective test system to improve the loading precision under complicated load condition, can still keep good performance, has strong robust performance.

Key words: automobile seat strength test; car; safety belt fixed point; test bench; electro-hydraulic servo loading; variable gain control

目录

第一章 绪论 1

1.1 引言 1

1.2我国安全带固定点试验台的现状与发展 1

1.3研究的意义与目的 1

1.4研究的主要内容 2

第二章 安全带固定点实验的相关研究法规 3

2.1主要技术法规 3

2.2相关技术法规的特点 3

2.2.1欧洲相关技术法规的特点 4

2.2.2美国相关技术法规的特点 4

2.2.3澳大利亚相关标准的特点 4

2.3常见的失效形式及原因探讨 5

2.3.1座椅锁止机构失效 5

2.3.2座椅靠背限位机构失效 6

2.3.3椅脚强度不够 7

2.3.4头枕问题 8

2.3.5座椅连接部位脱(断)开 8

2.3.6安全带固定点问题 9

2.3.7座椅固定件问题 9

第三章 总体功能方案设计 10

3.1机械结构设计 10

3.1.1试验台支架