机械系统原理的能量表达方法

原理表达是原理方案设计的首要问题 ,不仅要求能够抽象出物理原理 ,而且还需支持定常和非定常的设计任务。首先建立了机械系统的能量交互模型 ,描述了系统的能量转换关系 ;在此基础上 ,导出了原理方案设计的表达模型 ,转换原理方案设计为能量函数求解问题 ;运用键合图语言描述了机械系统包含的能量关系 ,给出其能量函数 ;最后 ,分析了该能量表达方法的特征 ,并结合具体设计实例说明其应用。

Energy-Based Principle Representation for Scheme Design of Mechanical Systems

The primary issue in principle schemes design is principle representation,which is required not only to abstract the physical principles,but also to support the design. In this paper,an energy interaction model of mechanical systems is built to describe all the energy transformations firstly. Then a model for principle schemes design is derived,in which principle schemes design is transformed into solving the energy function of system. The energy relations in mechanical systems are described using the language of bond graphs,and the energy functions is given. Finally,characteristics of the developed energy-based representation approach are analyzed and a design example of gate drive system is used to verify the approach.