I am using matlab / simulink 2018a. When connecting the slider gain, const, gain, simulink-ps blocks in Simulink enviroment , the robot configuration is wrong when adjusting the matching variables, along with the wrong direction of the axes. how to fix it? thank you?
I am trying to simulate the contact forces between a fixed plane and a sphere . However, when I recreate the model and run the simulation , I get the following error "External Force and Torque External_Force_and_Torque_PlaB has its follower port rigidly connected to the world frame; it has no effect. You can configure this diagnostic in the Simscape Multibody Configuration Parameters dialog." How can I fix this error?
Hi folks, This error message is due to default model settings and has an easy fix. I've created a MATLAB Answer showing the solution, since many people are running into this issue: www.mathworks.com/matlabcentral/answers/378561-rigidly-connected-port-error-with-simscape-multibody-contact-forces-library
Hi Sebastian i really appreciate your work. Im a student and i was asked to create a remote laboratory experiment of finding friction of a mass sliding down a surface with the gravitational force when we change the angle of the surface( plank) and the mass . Would really appreciate any tips regarding this. Thanks
I'm trying to create a robot fish that swims underwater. Could I tackle the reaction forces with contact modelling or should I be looking at an alternative?
I'd probably look into the approach at the 13:00 time stamp -- that is, measuring positions/speeds, implementing the hydrodynamic equations in Simulink, and then applying the resulting forces/torques back to the bodies. The overall schematic would look the same, but the equations of a swimming robot would be quite different from those trying to emulate rigid body collisions.
This is possible to add to your models if you have equations to represent that contact. For example, see this video: www.mathworks.com/videos/determining-vibro-acoustic-effects-in-multidomain-systems-using-a-custom-simscape-gear-library-108105.html
Hey! You might want to have a go at this PID control playlist from MATLAB: ua-cam.com/play/PLn8PRpmsu08pQBgjxYFXSsODEF3Jqmm-y.html The presenter of those videos (Brian Douglas) has a whole channel dedicated to control systems theory and I found his videos very helpful in my engineering degree. It is a great place to start off!
Very Disappointed From Sebastian ,As he is not showing and telling the parameters setting in the simulation,,, Thats too bad Sebastian,,Extreme disappointed
Very Disappointed From Sebastian ,As he is not showing and telling the parameters setting in the simulation,,, Thats too bad Sebastian,,Extreme disappointed
Very Disappointed From Sebastian ,As he is not showing and telling the parameters setting in the simulation,,, Thats too bad Sebastian,,Extreme disappointed
Very Disappointed From Sebastian ,As he is not showing and telling the parameters setting in the simulation,,, Thats too bad Sebastian,,Extreme disappointed
Very Disappointed From Sebastian ,As he is not showing and telling the parameters setting in the simulation,,, Thats too bad Sebastian,,Extreme disappointed
Great explanation, thank you .
hi , is there a way to rotate the contact plane? I want to simulate a car hitting a wall. Thanks
Is there any way to find the position of the point of contact?
Where can I get the Rotational and Translational Simscape?
I am using matlab / simulink 2018a. When connecting the slider gain, const, gain, simulink-ps blocks in Simulink enviroment , the robot configuration is wrong when adjusting the matching variables, along with the wrong direction of the axes. how to fix it? thank you?
I am trying to simulate the contact forces between a fixed plane and a sphere . However, when I recreate the model and run the simulation , I get the following error "External Force and Torque External_Force_and_Torque_PlaB has its follower port rigidly connected to the world frame; it has no effect. You can configure this diagnostic in the Simscape Multibody Configuration Parameters dialog." How can I fix this error?
Oh, I have a same problem with you. Did you fix it?
Hi folks,
This error message is due to default model settings and has an easy fix. I've created a MATLAB Answer showing the solution, since many people are running into this issue:
www.mathworks.com/matlabcentral/answers/378561-rigidly-connected-port-error-with-simscape-multibody-contact-forces-library
Thank you guys a lot!
too difficult
Hi Sebastian i really appreciate your work. Im a student and i was asked to create a remote laboratory experiment of finding friction of a mass sliding down a surface with the gravitational force when we change the angle of the surface( plank) and the mass . Would really appreciate any tips regarding this. Thanks
I tried establishing contact forces between a plate and a box, it was failed. I could see the box passing through the plate. Why is it happening?
Did you download and applied the simscape multiphysics library and multibody contact forces library, check the video description please.
I'm trying to create a robot fish that swims underwater. Could I tackle the reaction forces with contact modelling or should I be looking at an alternative?
I'd probably look into the approach at the 13:00 time stamp -- that is, measuring positions/speeds, implementing the hydrodynamic equations in Simulink, and then applying the resulting forces/torques back to the bodies.
The overall schematic would look the same, but the equations of a swimming robot would be quite different from those trying to emulate rigid body collisions.
Is there a way to model the contact between two meshing gears to determine the vibration while they mesh?
This is possible to add to your models if you have equations to represent that contact. For example, see this video: www.mathworks.com/videos/determining-vibro-acoustic-effects-in-multidomain-systems-using-a-custom-simscape-gear-library-108105.html
Hey Sebastian, how did you learn control systems Design, I really want to learn it
Hey! You might want to have a go at this PID control playlist from MATLAB: ua-cam.com/play/PLn8PRpmsu08pQBgjxYFXSsODEF3Jqmm-y.html
The presenter of those videos (Brian Douglas) has a whole channel dedicated to control systems theory and I found his videos very helpful in my engineering degree. It is a great place to start off!
Very Disappointed From Sebastian ,As he is not showing and telling the parameters setting in the simulation,,,
Thats too bad Sebastian,,Extreme disappointed
Very Disappointed From Sebastian ,As he is not showing and telling the parameters setting in the simulation,,,
Thats too bad Sebastian,,Extreme disappointed
Very Disappointed From Sebastian ,As he is not showing and telling the parameters setting in the simulation,,,
Thats too bad Sebastian,,Extreme disappointed
Very Disappointed From Sebastian ,As he is not showing and telling the parameters setting in the simulation,,,
Thats too bad Sebastian,,Extreme disappointed
Very Disappointed From Sebastian ,As he is not showing and telling the parameters setting in the simulation,,,
Thats too bad Sebastian,,Extreme disappointed