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Fix diff_drive_skid test #357

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merged 3 commits into from
Sep 17, 2020
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@azeey azeey commented Sep 17, 2020

A recent update to DART changed the way the slip parameter is implemented. Part of this change removed the small amount of slip each surface had by default. This in turn broke this test because the vehicle would not steer as some amount of slip is needed in the lateral direction. The solution is to lower the coefficient of friction in the lateral direction so the friction in that direction can be overcome by the steering force.

I believe this should also fix test failures on Focal since the DART version used there does not support the slip parameter.

A recent update to DART changed the way the slip parameter is
implemented. Part of this change removed the small amount of slip each
surface had by default. This in turn broke this test because the vehicle
would not steer as some amount of slip is needed in the lateral
direction. The solution is to lower the coefficient of friction in the
lateral direction so the friction in that direction can be overcome by
the steering force.

Signed-off-by: Addisu Z. Taddese <[email protected]>
@azeey azeey added the physics Involves Ignition Physics label Sep 17, 2020
@azeey azeey requested review from nkoenig and chapulina September 17, 2020 15:38
@azeey azeey self-assigned this Sep 17, 2020
@azeey azeey mentioned this pull request Sep 17, 2020
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azeey commented Sep 17, 2020

Not sure why the GIthub CI Action is not running for this PR.

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Can we update the required ign-physics version to 1.9?

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azeey commented Sep 17, 2020

Can we update the required ign-physics version to 1.9?

Yup. f9d82ca

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azeey commented Sep 17, 2020

CI Looks good. The two failing tests are not caused by this PR.

@azeey azeey merged commit fe7b726 into gazebosim:ign-gazebo2 Sep 17, 2020
@azeey azeey deleted the fix_diff_drive_test branch September 17, 2020 22:17
@chapulina chapulina added the 📜 blueprint Ignition Blueprint label Sep 17, 2020
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3 participants