Hi @Yuval
The provided block diagram suggests that you have attempted to model two coupled second-order inertial rotational systems, characterized by the variable 'Theta_dot_dot' (
) and the implied 'Phi_dot_dot' (
)
) and the implied 'Phi_dot_dot' ()Ideally, in the absence of any pole-zero cancellation, the resulting transfer function for 
should be a fourth-order system. This is due to the inherent complexity of the coupled second-order dynamics involved in the model.
should be a fourth-order system. This is due to the inherent complexity of the coupled second-order dynamics involved in the model.Thus, instead of using the Derivative block twice to numerically derive the angular accelaration signal 
, you should use the knowledge of first principles to construct the mathematical equation (ODE) for 
.
, you should use the knowledge of first principles to construct the mathematical equation (ODE) for .
