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How to connect a dc motor simulink model into a structure of simmechanics?

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Eleni.T
Eleni.T 2020 年 6 月 30 日
コメント済み: Vasco Lenzi 2020 年 8 月 19 日
Hello! I have a simulink model of a solar tracker, and the output is the angular position of a dc motor which rotates a solar panel. I have a CAD model of a solar tracker and i want to import it to simechanics. Wha t i have to do is relate the motor angular position to the joint where the motor is? Also, in the transfer function of the motor, i inlcuded the inertia of the motor+tracker's structure, and in the torque term i used motor torque-load torque. Now that i am going to connect it to a simmechanic model, are the torque and inertia automatically computed so do i have to remove them from the simulink equation? Any help would be appreciated.
Thank you

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Vasco Lenzi
Vasco Lenzi 2020 年 6 月 30 日
Hi Eleni
what you are suggesting goes in the right direction. We do have a multibody example of solar panel tracking if you want some Multibody files to prototype:
Regarding your question:
We released a free blockset addon with example of blocks that connect 1D simulation with 3D simulation in Simscape:
For older release than 20a look at the link in the File Exchange entry:
There is even a DC motor with Multibody ports that you can apply to move a rotational joint:
After you have looked at the example I believe you are going to understand properly the connection of 1D with 3D. You need to create a kinematic relationship between the components, here the screenshot fro mone of the example:
Hope that helps
Vasco
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Vasco Lenzi
Vasco Lenzi 2020 年 8 月 19 日
It depends on the dynamics of your system. I would take the response time of your motor and divide it by 10-100 at least depending on how accuate you want it.
So if your motor has a rising time of 100 ms, put 1 ms as a filtering time.

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