装载机电液变速操纵系统的研究

发布时间：2018-04-26 19:35

本文选题：装载机 + 变速操纵系统　；参考：《浙江大学》2011年硕士论文

【摘要】：论文以装载机的变速操纵系统为研究对象,首先介绍了装载机变速操纵系统的研究现状,从手动变速到自动变速,自动变速中从开关阀换档到比例阀换档,引出论文的研究内容——开发一套依托于比例阀换档的自动变速操纵系统。接着介绍了变速操纵系统的换档规律,并结合传统换档规律的不足,提出了基于模糊控制的换档控制策略,该换档策略整合了驾驶者的操作意图,自动进行档位运算和选择合适的换档时机,进而开发了相应的自动换档控制器。结合实际工况,设计了一种新结构的比例换档阀,并建立了该比例换档阀的数学模型和仿真模型,对其进行了全面的理论研究。然后对这一套系统进行了台架试验,试验结果表明：比例换档阀换档的压力曲线和理论换档曲线基本吻合,能实现平稳换档,改善换档品质。并提出了换档策略的验证方案。最后论文总结了全文的成果和对尚未完善的工作进行了展望。
[Abstract]:In this paper, the variable speed control system of loader is taken as the research object. First, the research status of the loader variable speed control system is introduced. From manual transmission to automatic transmission, and from the switch valve to the proportional valve shift in automatic transmission, the research content of the paper is drawn out - a set of automatic variable speed control system based on the proportional valve shift is developed. The shift regulation of variable speed control system is introduced, and the shift control strategy based on fuzzy control is put forward based on the shortage of traditional shift regulation. The shift strategy integrates the driver's operation intention, automatically carries out the gear position operation and selects the appropriate shift timing, and then develops the corresponding automatic shift controller. A new type of proportional gear shift valve is designed, and the mathematical model and simulation model of the proportional shift valve are set up, and a comprehensive theoretical study is carried out. Then a bench test is carried out on this system. The test results show that the pressure curve of the shift valve in the proportional shift valve is basically consistent with the theoretical shift curve, and can achieve a smooth shift. Finally, the paper summarizes the results and prospects for the imperfect work.

【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH243

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