Research in Multi-Input Multi-Output Robust Control Design

9313764 Chait本研究项目致力于将标准的定量反馈理论(QFT)对角控制器设计推广到多输入、多输出系统的非对角控制器。该方法综合了多环路系统中每个顺序环路闭合时控制设计之间的交互影响，并根据闭环系统传输的增益和相位裕度来强调这些影响。该技术在三维非对称腔体中的有源噪声控制实验中的有效性。该设备表示从扬声器到麦克风的高度耦合的传递函数矩阵、三维声学空间中的轻微衰减的共振频率以及扬声器电压和麦克风声压级之间的传输的建模和识别的不确定性。研究结果提供了一种比现有设计工具更有效的设计工具。***

9313764 Chait This research project deals with the development and extension of the standard Quantitative Feedback Theory (QFT) diagonal controller design to non-diagonal controllers for multiple-input, multiple-output systems. The methodology incorporates the interaction effects between control design at each sequential loop closure in multiple loop systems, and emphasizes these effects in terms of the gain and phase margins of the closed- loop transmission. The efficacy of the techniques to an active noise control experiment in a three-dimensional asymmetric cavity. The apparatus represents highly coupled transfer function matrix from speakers to microphones, lightly damped resonance frequencies in the three-dimensional acoustic space, and uncertainty in modeling and identification of the transmission between speakers voltage and microphone sound pressure levels. The research results provide a more effective design tool compared to those currently available. ***