Firstly, the position graph presented in the model spans 15 seconds. However, since we have added a saturation block with an upper limit set to 90 degrees, the graph flattens after reaching 90 degrees (i.e. at 4 seconds).
As per my understanding, you are trying to simulate the behavior of an aircraft's rotor nacelle, given that it rotates with a constant angular velocity of 10 rad/sec. At any point, the position of the nacelle should lie within the 0 to 90 degrees range.
In the current model, the use of a sine wave to generate the position seems unusual. Moreover, there hasn’t been any application of the angular velocity (10 rad/sec), which is the only known value to us.
Instead of using a sine wave, we could define a constant angular velocity and integrate it over time to obtain the position. We can further utilize a MATLAB function block to restrict the position between 0 and 90 degrees.
I have attached a model for reference. Here, I have assumed that the nacelle motion is oscillatory.
A similar approach could be followed for accelaration graph as well.
