simulation 3d, gravity effect and force feedback

i have a force feedback enabled joystick and if i have a model in simulation 3d in which a robotic pick n place application is created, than if the robotic arm tries to pick some object, can we have a gravity(earth's gravity) effect on that object? so that the effect of gravity can be felt at the jostick

Answer 1

[JMP Phillips]

I interpret this to mean that you want your joystick to feel heavy when it picks up an object. That depends if your joystick force feedback is programmable or not. Did it come with an SDK or otherwise that you can adjust the feedback settings?

[Rishabh Parmar]

thanks for your reply. My joystick is force feedback programmable. The issue i am facing here is in the design. How can i incorporate effect of gravity in my design?? Is it to be done in the CAD itself and than import it to the Simulink 3D? Since i am not a design guy so not much familiar with design specs and softwares.

[JMP Phillips]

I think you include or turn on gravity in the CAD (assume you are using SolidWorks for example) model, and then drop it into Simulink. See https://www.youtube.com/watch?v=h7wY8_eqW1s as an example.

So Simulink is really just a nice way to connect it all together - the gravity is included in the CAD itself.

Then you will need to design a Simulink block between your CAD model output into your force feedback joystick input. The block will take force outputs from the model, and convert to input signals for your joystick. Your joystick inputs will need to be appropriately scaled for the CAD model outputs - one way is to normalize the inputs and outputs between 0 and 1 (1 for maximum force, 0 for no force).