% step response of G1 
% G1_ty = [time y] 
G1_ty=[ ... 
    0.000000, 0.000000; ...
    0.100000, 0.003977; ...
    0.200000, 0.017001; ...
    0.300000, 0.038301; ...
    0.400000, 0.067091; ...
    0.500000, 0.102657; ...
    0.600000, 0.144355; ...
    0.700000, 0.191601; ...
    0.800000, 0.243868; ...
    0.900000, 0.300676; ...
    1.000000, 0.361595; ...
    1.100000, 0.426233; ...
    1.200000, 0.494237; ...
    1.300000, 0.565285; ...
    1.400000, 0.639088; ...
    1.500000, 0.715384; ...
    1.600000, 0.793936; ...
    1.700000, 0.874529; ...
    1.800000, 0.956969; ...
    1.900000, 1.041079; ...
    2.000000, 1.126702; ...
    2.100000, 1.213693; ...
    2.200000, 1.301922; ...
    2.300000, 1.391272; ...
    2.400000, 1.481634; ...
    2.500000, 1.572914; ...
    2.600000, 1.665024; ...
    2.700000, 1.757884; ...
    2.800000, 1.851424; ...
    2.900000, 1.945579; ...
    3.000000, 2.040290; ...
    3.100000, 2.135504; ...
    3.200000, 2.231174; ...
    3.300000, 2.327256; ...
    3.400000, 2.423710; ...
    3.500000, 2.520502; ...
    3.600000, 2.617600; ...
    3.700000, 2.714973; ...
    3.800000, 2.812597; ...
    3.900000, 2.910446; ...
    4.000000, 3.008501; ...
    4.100000, 3.106740; ...
    4.200000, 3.205147; ...
    4.300000, 3.303706; ...
    4.400000, 3.402401; ...
    4.500000, 3.501221; ...
    4.600000, 3.600153; ...
    4.700000, 3.699187; ...
    4.800000, 3.798313; ...
    4.900000, 3.897522; ...
    5.000000, 3.996806; ...
    5.100000, 4.096158; ...
    5.200000, 4.195572; ...
    5.300000, 4.295042; ...
    5.400000, 4.394562; ...
    5.500000, 4.494128; ...
    5.600000, 4.593735; ...
    5.700000, 4.693380; ...
    5.800000, 4.793058; ...
    5.900000, 4.892767; ...
    6.000000, 4.992504; ...
    6.100000, 5.092266; ...
    6.200000, 5.192050; ...
    6.300000, 5.291855; ...
    6.400000, 5.391678; ...
    6.500000, 5.491519; ...
    6.600000, 5.591374; ...
    6.700000, 5.691243; ...
    6.800000, 5.791125; ...
    6.900000, 5.891018; ...
    7.000000, 5.990921; ...
    7.100000, 6.090833; ...
    7.200000, 6.190754; ...
    7.300000, 6.290682; ...
    7.400000, 6.390617; ...
    7.500000, 6.490559; ...
    7.600000, 6.590506; ...
    7.700000, 6.690457; ...
    7.800000, 6.790414; ...
    7.900000, 6.890374; ...
    8.000000, 6.990339; ...
    8.100000, 7.090307; ...
    8.200000, 7.190277; ...
    8.300000, 7.290251; ...
    8.400000, 7.390227; ...
    8.500000, 7.490206; ...
    8.600000, 7.590186; ...
    8.700000, 7.690168; ...
    8.800000, 7.790152; ...
    8.900000, 7.890138; ...
    9.000000, 7.990125; ...
    9.100000, 8.090113; ...
    9.200000, 8.190102; ...
    9.300000, 8.290092; ...
    9.400000, 8.390084; ...
    9.500000, 8.490076; ...
    9.600000, 8.590068; ...
    9.700000, 8.690062; ...
    9.800000, 8.790056; ...
    9.900000, 8.890051; ...
    10.000000, 8.990046; ...
];