Due to the fact that function structure generation and function solving were alternative processes with mutual causality during conceptual design phase of mechatronic system,a conceptual design cyclic feedback solving model of mechatronic system was put forward based on mappings among function layer,effect layer,working principle layer and structure layer.

The interface characters model of function principle solution for mechatronic systems was built up.

This paper introduces in detail the criteria for choice of shape and position tolerance for shaft parts,on the basis of geometrical features and functional requirements of parts, and the synthetic effects of its usage,technology and economic results.

According to the application characteristics of the security and defense technology for intelligent residential quarters, this paper provides a comprehensive description from the aspects of the implementation of related specifications, design concept and essential functional requirements.

Secondly, it puts forward the Network\|based Green Design System (Abbreviation is NGDS ) which mainly discusses the functional demand, program design and the developing approach, functional mode of prototype.