Performance Measures for Smart Structures with MIMO Representations

Thus far we have explored the concept of smart structures as self contained feedback control systems designed to meet specific, predetermined performance goals. These goals included such metrics as “good” stability, tracking, command following, disturbance rejection and noise attenuation. In this chapter we will develop rigorous criteria for achieving both spatial and temporal performance as related to the above metrics. The criteria are presented in the context of smart structures as distributed parameter systems which have Multi-Input Multi-Output representations as illustrated using the transform methods of Chap. 4. More specifically the performance measures presented herein represent the logical extensions of modern robust multivariable control techniques to spatially distributed systems.