Chapter Two automatic Control 2.5 State Space of Control System State: situations of a physical system. past current or future State variable: a minimum group of variables which can describe movement state of system State vector: a group of independent state variables State space: the set of all states such as a n dimension of state space X(=x1(),2.5 State Space of Control System • State: situations of a physical system, past, current or future • State variable: a minimum group of variables which can describe movement state of system. • State vector: a group of independent state variables • State space: the set of all states such as a n dimension of state space X(t)= ( ) ( ) 1 , , n x t x t Chapter Two Automatic Control