Why my car jumps off the ground when it moves from steep road to flat road? (video)
Hi, pos. I'm getting stuck into this issue with my simulation. (video) The problem is: My car jumps off the ground when it moves from steep road to flat road. (though it could move from flat road to steep road easily). Video: http://www.youtube.com/watch?v=Uaq2YWq-uCA&feature=youtu.be If i make it run faster, then it could avoid this issue. (but i need it run at different velocities)
Does setting sdf model of the car matter? or do i need to make to connection segment of road from steep road to flat road less sharp? Could you help me out? So many thanks.
Asked by TyNguyen on 2014-05-18 13:55:21 UTC
Answers
Are you using height maps for the road and cylinders for the collisions? The cylinder height map interaction in ODE is buggy (see issue 684).
Asked by scpeters on 2014-05-19 04:37:45 UTC
Comments
You're is totally right. I used heightmap for the road and cylinders for wheel collisions. My world with car model and heightmap is in here : https://github.com/tynguyen/my_simulation/blob/master/cart_demo_insert_good.world Yet, this issue is still open. And i wonder why if i set velocity faster by some (e.g: 10 m/s), then it runs okie (with a small jump). Btw, I'm using Gazebo 2.2. Upgrading to Gazebo 3.0 could help, could'nt it? Or what can i do to solve this problem?
Asked by TyNguyen on 2014-05-19 06:39:32 UTC
Video showing car run well is here: http://www.youtube.com/watch?v=kkMG1e6blso&feature=youtu.be
Asked by TyNguyen on 2014-05-19 06:54:45 UTC
how do you solve the problem??
Asked by olmer on 2014-06-27 09:52:44 UTC
Comments
my initial thought was that the car settles like floating on the ground at the very end of the video. so may be the collision and visual properties are not aligned properly for the final flat road. can you check on that.
Asked by peshala on 2014-05-18 20:57:56 UTC
I've check and found that if i set velocity faster by some (e.g: 10 m/s), then it runs okie (with a small jump to pass the connection between steep road and high flat road). Video: http://www.youtube.com/watch?v=kkMG1e6blso&feature=youtu.be My car model is derived from utility_cart model. It is here: https://github.com/tynguyen/my_simulation/blob/master/cart_demo_insert_good.world Is there possibly any other issue?
Asked by TyNguyen on 2014-05-19 07:02:49 UTC