Sensor feedback from Spatial Contact Force always equal to 0

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Tran 2025-8-13

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https://ww2.mathworks.cn/matlabcentral/answers/2179323-sensor-feedback-from-spatial-contact-force-always-equal-to-0

评论： Tran 2025-10-9

I am modeling a Mar Rover with Rocker Bogie Design,

I got a problem of taking sensor from Spatial Contact Force (between Grid Surface and Point Cloud)

I model a wheel by a matrix of point for the wheel then link the frame R of Point Cloud to Wheel (a file solid that i draw from inventor), then frame G to Follower frame of Spatial Contact Force, then frame R Grid Surface to B of Spatial Contact Frame.

My model is working normal but there is not information from the sensor.

Best,

Hieu.

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Yifeng Tang 2025-8-25

when you say "there is not information from the sensor", which sensor are you referring to? I didn't notice any sensor block in your snapshot and the sensor ports of the spatial contact force block doesn't seems enabled.

It's also very difficult to diagnose anything based on snapshots. Consider attaching the model, or a surrogate model that reproduces the issue, so the community can help further.

Tran 2025-10-9

Hi Staff, sorry for taking a long to response to you. I had found out the answer for my question. The other Staff said that Matlab still cannot calculate the contact force for a multipoint system such as my system. Because my wheel is simulated as Point Cloud.

Thank you Yifeng Tang Staff for answer me,

Have a nice day, Boss.

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