Integrated Instrumentation and Control Design Using Finite Signal-to-noise Models*

In this paper, iiew signal-to-noise models a,re used to characterize instrumentation design specifications arid an integration of control and instrumentation design is achieved by simultaneously designing the feedback coiltrol law and the instrument signal-to-noise ratios to meet performance requirements for the closed loop system. Iterative algorithms are proposed to find locally opt,imal solutions. Assuming that the signal-to-noise ratio is directly related to the instrumentation cost, this integration provides a systematic procedure to design a low cost, control syst,em. More importantly, t,his procedure identifies the performance limiting component of a. closed loop system.