Adaptive Control of Hot Isostatic Pressing (HIP) for Metal Matrix Composite Fabrication

93621117梅赫拉制造金属基复合材料(MMC)需要使用复杂的制造工艺。热等静压(HIP)就是这样一种工艺，它正在成为加固先进飞机用MMC机身结构板的关键技术。本文的目标是综合运用现代控制理论、系统辨识和神经网络等技术，设计一种递阶两级自适应优化控制器。2级控制器将单位生产的最终成本降至最低，1级控制器调节热等静压工艺，以实现2级控制器规定的最佳温度和压力分布。第一阶段的研究包括(I)最先进的调查(Ii)从实际数据中识别第一级过程模型(Iii)自适应模型预测控制器(MPC)的设计(Iv)测试MPC控制器和(V)开发第二级控制器的体系结构。材料技术领域的领先者IBIS Associates将提供分包支持。世界上最大的HIP固结商工业材料技术公司(IMT)已经表示愿意支持第一阶段的工作。***

93621117 Mehra Fabrication of Metal Matrix Composites (MMC) requires the use of sophisticated manufacturing processes. One such process is Hot Isostatic Pressing (HIP) which is becoming a key technology for consolidating MMC airframe structural panels for advanced aircraft. The objective of proposed effort is to develop a hierarchical two level adaptive optimizing controller using, techniques of Modern Control Theory, System Identification and Neural Networks. The Level 2 controller minimizes the ultimate cost per unit of production and the Level 1 controller regulates the HIP process to achieve optimal temperature and pressure profiles dictated by the Level 2 controller. Phase I research includes (i) a State-of-The-Art survey (ii) identification of Level 1 process models from real data (iii) the design of an adaptive Model Predictive Controller (MPC) (iv) testing of the MPC controller and (v) development of architecture for Level 2 controller. IBIS Associates, a leader in the field of materials technology will provide subcontract support. Industrial Materials Technologies (IMT), the largest HIP consolidator in the world, has indicated their willingness for supporting the Phase I effort. ***