Design of Mechanical Motion's Program Based on Qualitative Reasoning in Conceptual Design

Qualitative reasoning is a key step in qualitative simulate.The characterization of symbols constituted the matrix to mechanical-based unit(BMU) into the function.Vector was used as the import and export of state and Unit Qualitative Function Matrix(UQFM) was used through a combination,thus it was derived to help designers to complete mechanical conceptual design and the idea of innovation.In this program,the unit was looked as the basis of a study.Qualitative algebra,logic combination,fractal algorithm and qualitative state were used to derive to fully grasp and forecast the composition of complex machinery and select a reasonable project according with the design requirements.By the end,through the conceptual design of Needle Driving Mechanism of sewing machine,the derived instance of a program verifies the rationality and feasibility in the article.