How to build up a motor that controls the speed of an centrifugal pump through an ideal torque source?

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Malte 2025-4-12

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https://ww2.mathworks.cn/matlabcentral/answers/2176251-how-to-build-up-a-motor-that-controls-the-speed-of-an-centrifugal-pump-through-an-ideal-torque-sourc

回答： Yifeng Tang 2025-4-22

motor.slx

I tried to biuld up an easy version of an motor to control my centrifugal pump. The problem is I dont want to use an ideal velocity source because the model should be realistic. The motor build cant mesure the velocity so the PID is not working as well. Can anyone help me out?

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Yifeng Tang 2025-4-22

Hi Malte,

In your model right now the torque source R port is also connected to the mechanical reference (ground), so no movement of the R port will ever happen. Also, the inertia is connected to the ground, which should usually be on the R port, the shaft. Fixing these two will allow the model to behave quite reasonably. See below.