液压元件功能知识表达的能量特征状态模型及其应用  

Energy characteristic state model for functional knowledge representation of hydraulic valves and its application

作　　者：马文勇[1] 王德伦[1] 

机构地区：[1]大连理工大学机械工程学院,辽宁大连116024

出　　处：《大连理工大学学报》2009年第6期858-864,共7页Journal of Dalian University of Technology

基　　金：国家自然科学基金资助项目(50775016);"八六三"国家高科技发展计划资助项目(2006AA04Z101)

摘　　要：给出液压元件功能知识表达数学模型.将液压控制元件的自身结构与使用方式相结合,定义能量特征状态基本变换单元为系统方案设计的最小功能选择单元.构建了基本变换单元输入输出间的定量关系方程,通过对该方程的定性特征化处理抽象出特征状态变换方程,并将特征状态变换方程的系数矩阵作为基本变换单元功能知识的定性数学表达.归结了常用基本变换单元,形成了基本变换单元功能知识表达库和相应的特征状态变换矩阵.构建了单动作液压子系统综合模型,并给出相应的矩阵分解算法与特征运算规则,最后结合具体实例阐述了基本变换单元功能知识表达模型在系统方案设计中应用的有效性.A mathematical representation model for the functional knowledge of hydraulic valves is presented. New design building blocks, called energy characteristic state basic transformation units, are firstly defined as the minimal functional selection unit in system conceptual design based on the hydraulic valves and their jointing patterns in the circuits. According to the specific structures of valves, quantitative expressions of basic transformation units are then established. By analyzing and abstracting the quantitative expressions qualitatively, the characteristic state transformation equations are constructed, and then the coefficients matrices, called characteristic state transformation matrices, are served as the representations of functional knowledge for basic transformation units. Furthermore, general basic transformation units are compiled and the corresponding characteristic state transformation matrices are all established for the future synthesis. Finally, the synthesis process for the single action hydraulic system is developed, and the decomposition algorithm of matrices and the operation rules of entries are deduced. A design example is also given to show the validity in system conceptual design.

关 键 词：概念设计 知识表达 能量特征状态 液压系统设计 

分 类 号：TH122[机械工程—机械设计及理论]