Speed Measurement in Torque Control
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Sabin
2023-7-14
The load speed is the actual machine speed. By using an Ideal Angular Velocity Source, we aim to keep the machine speed constant so we can test the torque controller. It is like what is happening in a real back-to-back test rig where we have two machines, one is torque controlled and one is speed controlled. The assumption is that speed load is working perfect so we only have to worry about torque control strategy. I hope this helps.
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Sabin
2023-7-17
Yes, this is a very good way of simulating the torque control for a given speed profile.
An alternative approach would be to compute the load speed based on the vehicle dynamics and road conditions but that would slow down the simulation. An example of doing this is included in Simscape Electrical: https://www.mathworks.com/help/sps/ug/ipmsm-torque-control-in-an-axle-drive-ev.html
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