This example shows the usage of function StateSpace.Analysis.isControllable which is to check whether a system is controllable or not.
function analysisControllability extends Modelica.Icons.Function; import Modelica_LinearSystems2.StateSpace; import Modelica.Utilities.Streams.print; import Modelica_LinearSystems2.Utilities.Types.StaircaseMethod; input StateSpace ssi = StateSpace(A = [1, 0, 0, 0, 0, 0; 1, 0, 0, 0, 0, 0; 0, 2, 3, 0, 78, 6; 1, 1, 2, 2, 3, 3; 10, 13, 34, 0, 0, 1; 0, 0, 0, 2, 0, 0], B = [0, 0; 0, 0; 0, 0; 0, 0; 1, 0; 0, 0], C = [1, 0, 1, 0, 1, 0; 0, 1, 0, 1, 0, 1; 0, 1, 0, 1, 0, 1], D = [0, 0; 0, 0; 0, 0]); input Boolean systemOnFile = false "True, if state space system is defined on file" annotation( Dialog(group = "system data definition"), choices(checkBox = true)); input String fileName = "NoName" "file where matrix [A, B; C, D] is stored" annotation( Dialog(group = "system data definition", loadSelector(filter = "MAT files (*.mat);; All files (*.*)", caption = "state space system data file"), enable = systemOnFile)); input String matrixName = "ABCD" "Name of the state space system matrix" annotation( Dialog(group = "system data definition", enable = systemOnFile)); output Boolean ok; end analysisControllability;