关于防止瞬时失速系统的分析与研究  

Analysis and Research for Anti-momentary-stall System

作　　者：马昌训[1] 

机构地区：[1]中南大学本部

出　　处：《工程机械》2009年第4期63-64,75,共3页Construction Machinery and Equipment

摘　　要：以静液压四轮驱动越野车和装载机等机械为研究对象,针对可能出现的瞬时失速问题进行探讨,介绍国内外常用的几种防止瞬时失速的控制系统:同步电传感控制系统、Twin-Lock液压孪生连锁同步系统和阻尼反馈控制系统等,详细分析这些系统的工作原理和特点。根据静液压四轮驱动的特点以及瞬时失速出现的原因,以防止瞬时失速系统的所要实现的功能为出发点,综合现有的几种控制系统的特点,通过采用有效的逆向推导法提出一种全新的全液压自控方法,并在原理分析的基础上,与现有的常用液压器件进行拟合,对减压阀进行改进,设计出一种系统简单、可靠性高、低成本并且高效率的自适应控制系统,对该系统的结构、工作原理和特点等方面作出分析。Taking hydrostatic,four-wheel drive all-terrain vehicles,loaders and other machinery as research objectives,possible problem of momentary stall is discussed.Several anti-momentary-stall control systems,commonly used home and abroad,are listed,including synchronous electric-sensing control system.Twin-Lock hydraulic synchronous system and damping feedback control system etc.Work principles and characteristics of these systems arc analyzed in detail.According to the characteristics of hydrostatic four-wheel drive as well as causes of momentary stall,a totally new fully hydraulic self-control method is suggested through adopting an effective reverse derivation starting from the functions that an anti-momentary-stall system should realize and combining the features of several existing control systems.On the basis of principle analysis,matching to common hydraulic units,a pressure reducing valve is improved and a self-adapting control system with simple structure,high reliability,low cost and high efficiency is designed.Structures,work principle and features of the system are discussed.

关 键 词：瞬时失速 同步电传感 孪生连锁 逆向推导法 全液压自控 

分 类 号：TH137.9[机械工程—机械制造及自动化]