面向复杂装备的工况适应性设计理论、方法及其应用研究

发布时间：2018-12-08 11:52

【摘要】：在复杂装备的设计过程中考虑外部环境扰动和本体状态变化,实现复杂装备在多样工况环境随机扰动状态下的适应性响应,本文提出了面向复杂装备的工况适应性设计理论,构建了复杂装备的工况适应性设计技术体系,对运行工况驱动的结构适应性变异设计方法、过程质量波动的特性适应性融合设计方法、结构强度失稳的模式适应性辨识设计方法和环境负荷胁迫的性能适应性修复设计方法进行了深入研究。结合实际项目,应用提出的理论和方法开发了面向复杂锻压装备的工况适应性设计集成系统,并在复杂锻压装备设计制造过程中进行了工程应用,取得了较好的效果。全文的组织结构为：第一章对复杂装备的设计现状进行分析,阐述了产品适应性设计,提出了面向复杂装备的工况适应性设计思想,给出论文的主要研究内容和结构体系。第二章定义了工况适应性设计的内涵。阐明了工况适应性设计的主体、介主体和适应等概念内涵,归纳了工况适应性设计的4个内涵特性和3个内涵机制,并构建了复杂系统工况适应性设计的技术体系。第三章提出了运行工况驱动的复杂装备结构适应性变异设计方法。构建了基于时序历程事件、生产环境因子、自然环境因子等多元因素的环境剖面基因模型；根据环境剖面基因模型,运用主链基因的缺失、新增、重组和分支链基因的缺失、新增等5种基因变异策略,对环境剖面差序基因模型进行演化运算,并以设计波动量最小为标准选取设计母板。以母版结构为基础,结合复杂装备的环境-功能-载体设计方案知识库对其结构进行适应性变异设计,使其更有效的适应运行工况,保障运行过程中的安全性和可靠性。通过锻压机液压系统的运行工况驱动结构适应性变异设计应用实例,证明了该方法的可行性和有效性。第四章提出了过程质量波动的复杂装备特性适应性融合设计方法。通过对过程质量进行内涵描述和波动性分析,构建了复杂装备过程质量特性空间／时间适应性融合模型。运用质量屋工具对设计过程的质量特性进行规划,基于田口质量损失方法对制造过程的质量特性进行运算,基于质量-成本模型对运行过程的质量成本进行求解。最后以锻压机机身部件为例,对所提出的设计方法进行验证。第五章提出了结构强度失稳的复杂装备模式适应性辨识设计方法。在复杂装备空间结构强度稳定性机理分析基础上,构建了空间结构形态矩阵,给出合并、扩增、分离、重组等4种空间结构形态矩阵的运算方法。运用隐马尔可夫模型对复杂装备结构强度失稳模式进行辨识,将空间结构信息引入训练过程中,经过形态矩阵的操作运算得到空间结构HMM适应性元模型,通过对经典HMM的辨识算法进行优化,提高故障模式溯源辨识的计算效率和准确性,从而实现复杂装备空间结构强度的模式适应性辨识设计。最后以机压机多连杆失稳模式适应性辨识设计为例,表明该方法的有效性。第六章提出了环境负荷胁迫的复杂装备性能适应性修复设计方法。以运行阶段系统所处的环境因素为研究对象,针对环境敏感系统提出了环境负荷胁迫响应模型,在环境负荷胁迫工况下,系统性能下降处于潜在故障状态时,利用闭环传感器系统对环境因子状态进行监测,并根据监测数据构建转录因子阵列和状态酶阵列,联合映射确定工况波动源和扰动幅度,启动环境修复方案并配合状态酶调控其运行程度进行工况适应性修复,避免潜在故障持续造成功能故障,保障系统的正常运行。通过对锻压冲压工艺性能状态进行模拟,验证了该方法的有效性。第七章结合实际项目,开发了面向复杂锻压装备的工况适应性设计集成系统(HD-CADIS),并将结构适应性变异设计方法、特性适应性融合设计方法、模式适应性辨识设计方法、性能适应性修复设计方法应用在复杂锻压装备的设计制造过程中,在实践中证明本文提出理论与方法的可行性和有效性。第八章对论文进行总结,并对以后研究进行展望。
[Abstract]:In the design process of complex equipment, the adaptive response of complex equipment under the condition of random disturbance of various working conditions is considered, and the adaptive design theory for the working condition of complex equipment is put forward. The working condition adaptability design technical system of the complex equipment, the structural adaptability variation design method driven by the running condition and the characteristic adaptability fusion design method of the process quality fluctuation are constructed, The model adaptability identification design method of structural strength instability and the performance adaptability repair design method of environmental load stress are deeply studied. According to the practical project, the application of the theory and method to the complex forging and forging equipment is developed, and the engineering application is carried out in the design and manufacture of the complex forging and forging equipment, and the better effect is achieved. Full-text organization structure In the first chapter, the paper analyzes the present situation of the complex equipment, expounds the product adaptability design, puts forward the design idea of the working condition for complex equipment, and gives the main research contents and knots of the paper. The second chapter defines the adaptability of working conditions. The connotation of the design is clarified. The concept of the main body, the main body and the adaptation of the working condition adaptability design is clarified. The four connotation and the three connotation mechanism of the working condition adaptability design are summarized, and the adaptability design of the working condition of the complex system is constructed. The third chapter puts forward the structure of complex equipment driven by operating condition. According to the environmental profile gene model, the deletion of the main chain gene, the deletion of the new, the recombination and the branch chain gene, the addition of the new 5 and the like are constructed. the genetic variation strategy is used to carry out the evolution operation on the environmental profile difference sequence gene model, and the design fluctuation amount is the least as the standard. Based on the master structure and combining with the environment of complex equipment-the knowledge base of the environment-function-carrier design of the complex equipment, the adaptive mutation design of its structure is carried out, so that it can adapt to the operation condition more effectively and guarantee the operation process. The safety and reliability of the method is proved by the application of the structural adaptive variation design of the hydraulic system of the forging press. The fourth chapter puts forward the complex equipment characteristic of process quality fluctuation Based on the description of the process quality and the analysis of the volatility, the quality characteristic space of the complex equipment process is constructed. The time-adaptive fusion model is used to plan the quality characteristics of the design process by using the quality house tool. The quality characteristic of the manufacturing process is calculated based on the field-port quality loss method, and the operation process is carried out based on the quality-cost model. The quality cost is solved. In the end, the body part of the forging press is used as an example, and the proposed method The design method of structural strength instability is presented in the fifth chapter. Based on the analysis of the mechanism of structural strength stability of complex equipment, the spatial structure form matrix is constructed, and four kinds of space, such as combination, amplification, separation and recombination, are given. By using the hidden Markov model, the structural strength instability mode of the complex equipment is identified, the space structure information is introduced into the training process, the space structure HMM adaptive element model is obtained through the operation operation of the morphological matrix, The identification algorithm of MM is optimized to improve the efficiency and accuracy of the identification of the source of fault mode, so as to realize the strong spatial structure of complex equipment. The adaptive identification of the multi-link instability mode of the machine-press machine is designed to The effectiveness of the method is shown in the sixth chapter, and the complexity of the environmental load stress is put forward in the sixth chapter. In order to study the environmental factors at the operation stage system, the environmental load stress response model is put forward for the environment-sensitive system. Under the condition of environmental load stress, the system performance degradation is in the potential fault condition, and the closed-loop sensor is used. the system monitors the state of the environment factor, constructs a transcription factor array and a state enzyme array according to the monitoring data, Non-potential failure continues to cause work can fault, ensure the normal operation of the system, The validity of this method is verified by simulation. Chapter 7, combining with the practical project, has developed an integrated system (HD-CADIS) for working condition of complex forging and forging equipment, and the design method and characteristic adaptability of the structural adaptability are set up. in that design and manufacture of the complex forging equipment, the design method of the method, the mode adaptability identification design method and the performance adaptability repair method are used in the design and manufacture of the complex forging equipment, The feasibility and effectiveness of the theory and method are put forward.
【学位授予单位】：浙江大学
【学位级别】：博士
【学位授予年份】：2014
【分类号】：TH122

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