基于全锻造过程建模的复杂大型模锻装备设计与控制研究

项目名称： 基于全锻造过程建模的复杂大型模锻装备设计与控制研究

项目编号： No.51205420

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 机械工程学科

项目作者： 陆新江

作者单位： 中南大学

项目金额： 26万元

中文摘要： 大型模锻系统是一种典型的复杂大惯量装备与微观流变成形的强耦合系统，影响因素众多且存在大量的不确定性。而传统的设计方法不能处理不确定性下非线性装备设计问题与动态性能设计问题，已有的建模方法割裂了微观流变成形与宏观装备运行状态之间的联系，传统的控制方法也不考虑运行段之间的模型差异与并行驱动回路之间的特征差异，导致系统严重偏离理想的设计性能也难以获得所需的工艺条件，无法实现锻件形/性协同制造。为此，必须对大型模锻装备的设计、建模与控制进行全方位的研究。 以大型模锻装备的整体性能为目标，首先创新鲁棒设计方法，在传统鲁棒设计方法的基础上考虑系统的非线性、模型不确定性、稳定性与动态鲁棒性,实现不确定性下静/动态设计要求；其次，研究微观成形过程与宏观装备运行状态的相互作用机制及结合机理与数据补偿的全锻造过程建模方法；再次，研究全锻造过程的"分治-协调"控制原理与策略，实现分段精确运行与多缸同步控制。

中文关键词： 锻造；鲁棒设计；过程建模；过程控制；

英文摘要： On the one hand, the forging press system studied has complex nonlinearity with strong coupling between the movement of nonlinear equipment and the forming process of forging part. Since the mechanism of the forming process is unclear and there exists many uncertain influences during movement of the forging equipment, the analytic model of the forging press system is difficult to obtain, which causes difficult to design and control. On the other hand, the traditional design methods are difficult to design not only the robustness of the strongly nonlinear system but also the stability and dynamic robustness under uncertainty. Moreover, the existing modeling methods do not consider the relation between the movement of forging equipment and the forming process of forging part. Furthermore, the traditional control methods do not consider both the model difference between different movement stages and the feature difference between all parallel driven systems. All these cause poor forging performance and undesirable forging production. Thus, for high-performance and high-precision forging production, a systematic method, including novel system design method, process modeling method and control method, should be developed. Aiming at the shortcomings of the traditional methods and according to the feature of the forg

英文关键词： Forging；Robust design；Process modeling；Process control；