[SOLVED] I want a plant for which states are not available

[satishgmmd]

I want a plant for which input and output can be measured and its dynamics(mathematical model) are not available. Someone please suggest me such kind of systems.Also state varaibles are not available for measurement.

 

[ZekeR]

Virtually any control system can fit this description; all you have to do is remove the sensors so that its states cannot be measured. In my profession, a linear power regulator fits the description quite well: one can measure the input and output, but adding sophisticated sensors and estimators would be much too costly to be practical.