Question

What is controllability and observability?

Answer 1

Controllability is an important property of a
control system , and the controllability
property plays a crucial role in many control
problems, such as stabilization of unstable
systems by feedback, or optimal control.
Controllability and observability are dual
aspects of the same problem.

Answer 2

Answer:

Controllability measures the ability of a particular actuator configuration to control all the states of the system; conversely, observability measures the ability of the particular sensor configuration to supply all the information necessary to estimate all the states of the system.