I am using the spacecraft dynamics block in Simulink.
I am giving two nonzero moment inputs as shown below in one of the attached screenshots. It is just a PRBS input for both.

However, my angular velocity output looks like the next attached photo.
How is it that my angular velocities are all going negative and becoming larger in magnitude negative as time goes on when the input is swinging negative and positive? You would think that the input given would cause the spacecraft to essentially wobble back and forth, but instead we see it abruptly start to spin one direction and spin faster and faster in that same direction as time goes on. This does not match my intuition and makes me think something is wrong. I would really appreciate if someone could clarify.I am using the spacecraft dynamics block in Simulink.
I am giving two nonzero moment inputs as shown below in one of the attached screenshots. It is just a PRBS input for both.

However, my angular velocity output looks like the next attached photo.
How is it that my angular velocities are all going negative and becoming larger in magnitude negative as time goes on when the input is swinging negative and positive? You would think that the input given would cause the spacecraft to essentially wobble back and forth, but instead we see it abruptly start to spin one direction and spin faster and faster in that same direction as time goes on. This does not match my intuition and makes me think something is wrong. I would really appreciate if someone could clarify. I am using the spacecraft dynamics block in Simulink.
I am giving two nonzero moment inputs as shown below in one of the attached screenshots. It is just a PRBS input for both.

However, my angular velocity output looks like the next attached photo.
How is it that my angular velocities are all going negative and becoming larger in magnitude negative as time goes on when the input is swinging negative and positive? You would think that the input given would cause the spacecraft to essentially wobble back and forth, but instead we see it abruptly start to spin one direction and spin faster and faster in that same direction as time goes on. This does not match my intuition and makes me think something is wrong. I would really appreciate if someone could clarify. aerospace toolbox, spacecraft dynamics MATLAB Answers — New Questions

​