Development of A Nonlienar Multivariable Control System for Sheet Forming Processes

板材成型过程非线性多变量控制系统的开发

• 批准号: 9313237
• 负责人: Karl Ousterhout
• 金额: $ 15.7万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-11-01 至 1997-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9313237&HistoricalAwards=false
• 关键词: Development; Nonlienar; Multivariable; Control; System

9313237 Ousterhout In this research project, innovative analytical techniques are developed for modeling and controlling sheet forming processes by combining closed-loop control theory with real-time process measurements. The procedure leads to optimum binder force profile in both space and time, and increases the level of in-process control and disturbance rejection towards significantly improving accuracy, part-to part consistency and flexibility. The project includes the design, fabrication and testing of a deep-drawing apparatus with a multivariable force controlled binder to test the analytical methods, and to assess the performance of the multivariable force controlled binder over a wide variety of materials and part configurations. The variable force controlled binder has the force control characteristics to regulate the binding force, and the capability to generate a variable force profile along the perimeter of the binder that changes with position and time. The results of this research lead to the development of theory and establishment of technology for improving accuracy and flexibility in sheet forming process. ***

9313237 OUSTERHUT在这项研究项目中，通过将闭环控制理论与实时过程测量相结合，开发了创新的分析技术来模拟和控制板材成形过程。该程序在空间和时间上都产生了最佳的粘结力分布，并提高了过程控制和干扰抑制的水平，从而显著提高了精度、零件到零件的一致性和灵活性。该项目包括设计、制造和测试具有多变量力控制粘结剂的拉深设备，以测试分析方法，并评估多变量力控制粘结剂在各种材料和零件配置上的性能。变力控制粘结剂具有调节粘结力的力控制特性，并且能够沿粘结剂的周长产生随位置和时间变化的可变力分布。本文的研究成果为提高板料成形过程的精度和柔性提供了理论依据和技术基础。***