How to change position of Coordinate Gravity when run the model

Hi all,

The position of Coordinate Gravity (image below) is a constant.

My project need this variable change value when run the model. Ex: with sample time = 0.1 t = 0, CG = [0 0 0] t = 0.1, CG = [1 0 -3] t = 0.2, CG = [2 2 -6] ...

Thanks

Answer 1

[Birdman]

Hi dinh,

Simscape parameters can not be changed while the model is running. The following link explains the differences between Simulink and Simscape tunable parameters. Check it:

https://www.mathworks.com/help/physmod/simscape/ug/how-simscape-run-time-parameters-differs-from-simulink.html

Especially, notice the following:

You can change the value of a Simulink tunable parameter while a simulation is running. Simscape run-time parameters are run-time configurable. You cannot change the value of a run-time configurable parameter during simulation. You can only change the value of a run-time configurable parameter when a simulation is stopped.

[Walter Roberson]

Would it be possible to ask that simulation be run for a limited time or limited number of steps, and then to change the parameter, and then to simulate more?

[Birdman]

Well, it is possible theoretically, but I doubt its efficiency.

[tran]

Thanks for help, I try using:

(1) Stop Simulation Block to change coordinate of gravity. But the simulation not continue. It run again at t = 0. (2) Press pause button in simulation window. But it also can not permit to change value.

I need change coordinate gravity because the model rotate with rotation_center is coordinate of gravity. Final, I solving the problem by rotation matrix. Again, Thanks so much :D