中文摘要：

提出液压系统方案设计的能量特征状态模型。以定性矢量的形式描述液压系统的能量特征,将一个完整的液压系统分解为若干个单动作子系统进行设计;将液压元件与其在系统回路中的使用方式相结合定义两类基本变换单元作为新的系统设计功能选择单元,并以功能分析为基础构建两类基本变换单元的定性矩阵表达;建立单动作子系统方案设计模型,将单动作子系统方案设计问题转化为模型空间内的矩阵分解与匹配。通过具体设计实例验证该方法的可行性与有效性。

英文摘要：

An energy characteristic state model for hydraulic system conceptual design is presented.The energy characteristics of hydraulic systems are represented by qualitative vectors,and integral hydraulic systems are visualized as several single-action subsystems for design.Basic transformation units are defined as new design building blocks from general hydraulic components,and the qualitative matrix representations for these design building blocks are established according to the function analysis.A conceptual design model of single-action system is developed,in which the conceptual design of single-action subsystems are transformed into the decomposition of system-level matrices and the matching of candidate matrices of basic transformation units.A design example is also given to show the feasibility and effectiveness of the approach.