system identification toolbox Can someone help me what is the problem?

ss3 =

Continuous-time identified state-space model:

dx/dt = A x(t) + B u(t) + K e(t)

y(t) = C x(t) + D u(t) + e(t)

A =

x1 x2 x3 x4

x1 0.04628 0.02211 0.2358 0.1861

x2 -0.03448 -0.02235 -0.1094 -0.06304

x3 -2.246 -0.01122 -36.83 -16.79

x4 0.0789 0.06066 10.15 0.1362

B =

u1

x1 4.536e-07

x2 -2.28e-07

x3 -8.029e-05

x4 2.556e-05

C =

x1 x2 x3 x4

y1 494 -77.99 5.829 8.847

D =

u1

y1 0

K =

y1

x1 50.48

x2 -23.13

x3 -7758

x4 2090

Name: ss3

Parameterization:

FREE form (all coefficients in A, B, C free).

Feedthrough: none

Disturbance component: estimate

Number of free coefficients: 28

Use "idssdata", "getpvec", "getcov" for parameters and their uncertainties.

Status:

Estimated using N4SID on time domain data "ttt".

Fit to estimation data: 100% (prediction focus, stability enforced)

FPE: 2.69e-12, MSE: 2.669e-12

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Hello

I made a system Identification by toolbox for hardware actuator and got this model but the model dosent work like the plant hardware

when I design a state space model and substitute the A,B,C,D matrices its dosent work like plant system

Can someone help me what is the problem?

ttt data is a time domain

the input to the actuator is sinewave signal

output trajectory tracking for the input

Best Regards