关键词: 木薯收获机, 挖掘铲, 仿生设计, 层次分析法, 灰色关联分析

Abstract: To solve the structural design schemes selection problem of cassava harvester's digging shovel,a multi-objective grey relational decision-making method was proposed based on analytic hierarchy process.According to the multi-level,multi-index characteristics of design scheme,a decision-making objective system was built.Taking the static mechanical properties,vibration resistance and lightweight performance as the objective functions,the decision-making model of cassava digging shovel was established,and the decision-making model was solved by grey relational analysis method and analytic hierarchy process.The multi-objective grey relational decision-making method was used to select digging shovel of a digging-pulling style cassava harvester,the optimal bionic-type digging shovel was obtained,and the objective function of this digging shovel's structural optimization design was pointed out.The research result showed that the multi-objective grey relational decision-making method of cassava digging shovel based on analytic hierarchy had high practicability.

Key words: cassava harvester, digging shovel, bionic design, analytic hierarchy process, grey relational analysis