| 摘要: |
| 【目的】为了解决旋耕机设计效率低的问题，基于知识工程理论构建了旋耕机智能设计系统，为旋耕机的快速设计提供参考。【方法】在分析旋耕机设计相关知识的基础上，以系统 零部件 设计知识为思路，整理了设计规则，采用产生式表示方法建立零部件参数库、设计规则库、装配信息库、模型实例库，将基于规则的推理和基于实例的推理相结合，提出基于经验规则的模糊推理算法和推理解释机制，并通过相关程序编写推演应用，利用Visual-Studio和API对SolidWorks进行二次开发并整合相关程序，针对智能设计产品的可靠性进行EDEM-ANSYS耦合仿真验证。【结果】在研究整理旋耕机设计知识的基础上，深度挖掘了更多隐性知识，基于SQLite关系型数据库构建了旋耕机设计规则库和实例库，应用混合推理算法和用二次开发技术实现了设计资源的重用和数据关联、尺寸特征驱动零部件变更、零部件自动装配等功能，开发了.exe格式的整套系统，在Windows 10操作系统、Intel i5 7th处理器、16G内存配置环境下，2~3 min即可完成整机的设计并输出三维模型。仿真验证表明，设计旋耕机土壤破碎率约为72.13%，不平整土层厚度约为2.8 cm，碎土效果及地表平整度均较好；耕作部件强度满足设计要求。【结论】利用所设计的智能系统可快速自动生成符合用户需求的旋耕机三维模型和参数，且系统产品完全满足工作需求和工作可靠性，有效提高了旋耕机的设计效率。 |
| 关键词: 旋耕机 智能设计 知识工程 专家系统 二次开发 |
| DOI： |
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| 基金项目:云南省重大科技计划项目（2016ZF001-4-3）;云南省重大科技专项（2018ZC001-1-1，2018ZC001-3，2018ZC001-4，2018-ZC001-5）;国家自然科学基金项目（51975265，31960366）;云南省高校工程研究中心建设计划项目 |
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| Development of intelligent design system for rotary tiller based on KBE |
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LU Chaoyu,WANG Fenghua,LAI Qinghui，et al
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| Abstract: |
| 【Objective】In order to improve the design efficiency of rotary tiller,an intelligent design system for rotary tillers was developed based on knowledge engineering,which provides reference for rapid design of rotary tiller.【Method】On the basis of literature review on rotary tiller design and the idea of system components-design knowledge,the parameter library,design rule library,assembly information library,model instance library and design results library of rotary tiller were established using production display method.Combining rule-based reasoning with case-based reasoning,the fuzzy reasoning algorithm based on empirical rules and reasoning explanation mechanism was proposed.Secondary development of SolidWorks based on VisualStudio and API was conducted and related procedures were integrated.EDEM-ANSYS coupling simulation was also carried out to verify the reliability of intelligent design products.【Result】On the basis of design knowledge of rotary tiller,more tacit knowledge was deeply excavated,and the rotary tiller design rule library and case database were constructed based on the SQLite relational database.Reuse of design resources and relevant database,dimensional feature-driven part change, parts auto-assembly and other functions were developed by applying hybrid reasoning algorithm and secondary development technology.A complete system in the.exe format was developed,which completed 3D model in 2 to 3 minutes under the Windows 10 operating system with Intel i5 7th processor and 16G memory.Simulation verification showed that the designed rotary tiller had a soil crushing rate of about 72.13% and an uneven soil layer thickness of about 2.8 cm.The crushing effect and surface flatness were both good,and the strength of tillage components met design requirements.【Conclusion】The established system could quickly design a rotary tiller that meets user needs,and the product could fully meet work requirements and reliability.This system effectively improved the design efficiency of rotary tiller. |
| Key words: rotary tiller intelligent design knowledge based engineering expert system secondary development |
