|Definition:|| switching system the values of the output variables of which at a specified instant depend on the values of the input variables and the values of the state variables at this instant, whereas the values of the state variables of the system at a following instant depend on the values of the state variables and the values of the input variables at the specified instant|
SEE: Figure 22.
Note 1 to entry: A sequential circuit is described by the equations
|xi+1 = f(xi, ui)||transition function, consisting of a finite number of state variables|
|vi = g(xi, ui)||output function|
|xi||is the state vector at instant ti;|
|xi+1||is the state vector at instant ti+1;|
|ui||is the input vector at instant ti;|
|vi||is the output vector at instant ti.|
Note 2 to entry: For the sequential circuit a specific stability does exist. This stability means the property that the input variable which has caused the transition to a specific state cannot interact with this state or cannot cause another transition when interacting with this state.
Note 3 to entry: This entry was numbered 351-29-05 in IEC 60050-351:2006.