Are sensor blocks in Simscape supposed to affect the system dynamics?

I am developing a piston-cylinder model (a pneumatic piston chamber, a constant volume pneumatic chamber, a translational electromechanical converter and a controlled voltage source), and adding sensors to the system affects the system dynamics. Is this supposed to happen?

Answer 1

[Sebastian Castro]

What do you mean when you say "affecting system dynamics"?

Simscape is basically a multi-domain circuit simulator, so the whole "voltmeter vs. ammeter" discussion holds up for pneumatic/mechanical systems too. That is, the mechanical sensor blocks need to be connected in a particular way (i.e. series vs. parallel) -- otherwise, you might get undesired paths of zero/infinite resistance that will take your dynamics to zero.

The general rule is: Force sensors in series , Motion sensors in parallel .

If it's something completely different (i.e. not zero, but just different values), could you expand on what's going on? Thanks!

- Sebastian