Why the angular velocity is not constant?

Greetings

While running my mechanism , I have inputed a constant velocity of 1 rad/s to my motor and then I was watching the velocicities of the other part of the mechanisms.

In order to remove any kind of inertia I put the gravity g to [0 0 0] instead of [0 0 -0.981]

this the velocity profile

But the the velocity of the motor is still not constant

I have also attached the entire mechanism in sismscape

Any hint?

thank you!

Answer 1

[Steve Miller]

You have only configured your motor to have an initial speed of 1 rad/s. To specify that the motor should always move at 1 rad/s, no matter what the load is, you need to feed it an input signal that increases by 1 rad each second.

1. Configure the Revolute Joint to accept motion as an input signal and automatically calculate the torque
2. Add a Ramp block
3. Add a Simulink-PS Converter block
4. Connect as shown in the screenshot below.
5. Replace Revolute Joint O with this new joint

[amatoallah ouchen]

thank you very much!