Pressure regulator model: how to study its stability

AI Thread Summary
A pneumatic pressure regulator model is being developed to match commercial performance data, but stability issues arise during optimization. The discussion emphasizes the importance of understanding feedback mechanisms and the need to restrict parameter variations to avoid oscillations. Suggestions include conducting a grid search for stability boundaries and focusing on static force diagrams rather than dynamic models. The model's parameters, including spring stiffness and flow restrictions, are crucial for accurately simulating regulator behavior. Overall, a systematic approach to modeling and testing is necessary to achieve reliable results.
  • #51
Q_Goest said:
If a valve with a smaller port size on it will give you the correct flow rate and that port size is smaller than what is on the brake, go ahead and use a reducer somewhere. The only other option is to increase the volume of your brake, and that's not a particularly good answer.

I'm sorry my question was specific enough. The brake has G3/8 and the valve G1/4, so there is no problem, right?
 
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  • #52
serbring said:
I'm sorry my question was specific enough. The brake has G3/8 and the valve G1/4, so there is no problem, right?
That's correct.
 
  • #53
Q_Goest said:
That's correct.

great. Q_Goest, thanks a lot for your precious help! :)
 
  • #54
I am new to simscape and trying to setup a similar pressure regulator model. It seemed like I connected all the elements correctly but I am not getting the expected results.

I have attached a pic of the regulator and of the simscape model as well below.

Can someone please let me know if the elements are correctly connected ? Any advise, help , suggestion is appreciated.

upload_2015-6-8_13-20-31.png

Regulator Model

upload_2015-6-8_13-2-15.png


Simscape Model
 
Last edited:

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