modeling a solenoid coil

19 vues (au cours des 30 derniers jours)
Goutham Sajja
Goutham Sajja le 23 Fév 2021
Commenté : Juan Sagarduy le 26 Fév 2021
Hello All,
I am trying to model a solenoid in simscape using the blocks from simscape electrical, mechanical and physical signal blocks. The equation that I have considered is
V = i*R + L*di/dt + i*(dL/dt)
V = voltage, i = current through the solenoid, R = resistance of the coil, L = inductance, dL/dt = dL/dx*dx/dt rate of change of inductance with respect to change in plunger position.
I will be using the force - stroke characteristic data to evaluate dL/dx.
When I rearrange the above equation and solving for i, we get
i = (1/L) * int ( V - (i*R) - i*(dL/dx)*(dx/dt))
When I impliment this particular equation using physical signal blocks and try to simulate it, I am getting the following error:
I kindly request you to guide me to overcome this error.
Thanks and Regards,
Goutham Sajja

Réponses (1)

Juan Sagarduy
Juan Sagarduy le 25 Fév 2021
Hello Goutham
I think you will find creating a Simscape component a better solution. Then, you can write the equations textually.
See link to give u a hint: https://se.mathworks.com/videos/simscape-language-electronic-example-73114.html
Best Regards Juan
  2 commentaires
Goutham Sajja
Goutham Sajja le 25 Fév 2021
Modifié(e) : Goutham Sajja le 25 Fév 2021
Hello Juan,
I thank you for your reply.
I did try to create a custom Simscape component. I considered adding an additional input to the PS Subtract block. But when I try to simulate it, I am getting the following error:
Kindly advice,
Thanks
Goutham Sajja
Juan Sagarduy
Juan Sagarduy le 26 Fév 2021
Hello Goutham
I attach a ssc implementation of a dynamic inductance, pretty much as described in the snapshot. You will see how this is done, I use the inductor in the Foundation Library as a base to create the ssc in the attachment.
We have a 1-day course on Simscape that you may find interesting to attend and give you a rounded insight on physical network modeling. See link:
Best of Luck
Juan

Connectez-vous pour commenter.

Catégories

En savoir plus sur Electrical Sensors dans Help Center et File Exchange

Produits


Version

R2020b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by