How to compute forces in global reference frame?

I have a model of the golf swing in simulink that outputs the forces in a local reference frame (relative to the follower block). I would like to find the forces relative to a global reference frame. What is the easiest way to do this throughout the model? Transform sensor?

Answer 1

[Sulaymon Eshkabilov]

Presuming that you are also using some blocks from SimScape toolbox in the Simulink environment, here are some points to consider:

! Use a Simulink block called the "Coordinate Transformation" block.

Some generalized outline of the whole model building process:

1. Define Coordinate Systems: Define the local and global reference frames. Use blocks "Local Coordinate System" and "Global Coordinate System" blocks of Simscape Foundation library.
2. Coordinate Transformation Block: Use the "Coordinate Transformation" block to perform the transformation from the local frame to the global one.
3. Use Sensor Blocks ("Transform Sensor" from Simscape Multibody): Force sensors in the local reference frame.
4. Connect all blocks ...
5. Simulate the built model
6. Have fun :)

Don't foget converters: between Simulink and Simscape signals.