Hey Jeremy - This is an interesting project. The pieces are there I think. Probably start with a demo of the HMMWV and use rigid terrain. You can add sensors to the HMMWV model. In the past, we also did something like this with SCM deformable terrain. For instance, see here: “Enabling Artificial Intelligence Studies in Off-Road Mobility Through Physics-Based Simulation of Multi-Agent Scenarios,” A. Young, J. Taves, A. Elmquist, S. Benatti, A. Tasora, R. Serban, D. Negrut, ASME Journal on Computational and Nonlinear Dynamics, 17(5): 051001, 2022 “End-to-end learning for off-road terrain navigation using the Chrono open-source simulation platform,” S. Benatti, A. Young, A. Elmquist, J. Taves, A. Tasora, R. Serban, D. Negrut, Multibody System Dynamics, vol. 54, 399–414, 2022
Beyond looking at the examples provided in demos, another place where you can look for tidbits is here: https://github.com/uwsbel/public-metadata . Dan ------------------------------------------------- Bernard A. and Frances M. Weideman Professor NVIDIA CUDA Fellow Director, Wisconsin Applied Computing Center Department of Mechanical Engineering Department of Computer Science University of Wisconsin - Madison 4150ME, 1513 University Avenue Madison, WI 53706-1572 608 772 0914 http://sbel.wisc.edu/ http://projectchrono.org/ ------------------------------------------------- From: [email protected] <[email protected]> On Behalf Of Jeremy Kimball Sent: Monday, February 13, 2023 7:23 PM To: ProjectChrono <[email protected]> Subject: Re: [chrono] Re: PyChrono sensor import failed Hi Dan, Sure thing. My research is pertaining to active suspension control with terrain preview for off-road vehicles, and so I was hoping to use Project Chrono to play around with simulating sensor readings (LiDAR, stereo camera) that could be used for extracting road profile information for upcoming terrain. The ultimate goal would be to feed that sensor data into a controller to generate the active suspension control action. I also want to look at reinforcement learning control methods for active suspension and was considering using Chrono as a training environment. Any thoughts on that? Jeremy On Monday, February 13, 2023 at 9:09:46 PM UTC-4 Dan Negrut wrote: Jeremy – also tell us, ball park, what you want to do. We might be able to give you one of our models, with sensors and everything, for you to get going fast, rather than struggling to put things together… Are you into small AVs and such? I think we have one such model all set up, ready to go. Dan ------------------------------------------------- Bernard A. and Frances M. Weideman Professor NVIDIA CUDA Fellow Director, Wisconsin Applied Computing Center Department of Mechanical Engineering Department of Computer Science University of Wisconsin - Madison 4150ME, 1513 University Avenue Madison, WI 53706-1572 608 772 0914<tel:(608)%20772-0914> http://sbel.wisc.edu/ http://projectchrono.org/ ------------------------------------------------- From: [email protected] <[email protected]> On Behalf Of Jeremy Kimball Sent: Monday, February 13, 2023 6:20 PM To: ProjectChrono <[email protected]> Subject: [chrono] Re: PyChrono sensor import failed Thanks for the response! 1) My operating system is Windows 10 Enterprise 2) I am using Python 3.9.15 3) I specified a specific package with conda install <pychrono_package>.tar.bz2. I used 'pychrono 8.0.0-py39_0.tar.bz2'. 4) Yes, I have a directory called pychrono-8.0.0-py39_0. As far as I can tell when I run "conda list" I have all of the correct versions of the required packages. I have attached a .txt file of the "conda list" output in the venv. Maybe there is something out of place there that I am missing. Any ideas / other troubleshooting steps I could take? Thanks so much, Jeremy On Monday, February 13, 2023 at 7:52:04 PM UTC-4 [email protected] wrote: Hi Jeremy, Can you please answer a few questions so I can understand your issue better, 1. What is your Operating System? 2. Which version of Python are you using? 3. When you used conda to install Chrono, did you use "conda install -c projectchrono pychrono" command or did you specify a specific package with conda install <pychrono_package>.tar.bz2? 4. Go to the anaconda installation folder: In windows: "C:\Users\<username>\anaconda3\pkgs\", In linux: "~/anaconda3/pkgs" and see if you have a directory called: pychrono-X.0.0-py3X_XXXX. Is the py3X version consistent with your own python version? Ex: If you have python 3.10, you should have a directory called: pychrono-X.0.0-py310_XXXX. If there is a version mismatch for question 4, you need to install the correct chrono package corresponding to your python version. Go to: https://anaconda.org/projectchrono/pychrono/files to find the relevant package name and use conda install <pychrono_package>.tar.bz2 to install the package. Also, make sure you have all the requirements listed in https://api.projectchrono.org/pychrono_installation.html properly installed. Hope these steps fix your problem. Please let me know if this doesn't work, so we can further look into it. Best, Nevindu On Monday, February 13, 2023 at 3:46:38 PM UTC-6 Jeremy Kimball wrote: Hello everyone, I am relatively new to python programming and am just getting started with PyChrono for my masters thesis research, specifically I am interested in the sensor module. I have installed pychrono according to the steps outlined at: https://api.projectchrono.org/pychrono_installation.html. All of the demos other than the sensor ones run on my machine, however, when I attempt to run any of the sensor demos I get an import error: ImportError: cannot import name '_sensor' from 'pychrono'. I have Nvidia graphics driver version 528.02 and my machine has an Nvidia GeForce MX250 GPU. All of the packages in my venv seem to align with the required versions as per chrono documentation. I would also like to mention that I have only had success running the other demos when either 1) in VSCode I paste all of the .dll chrono files into the active folder or 2) when I run the demo scripts directly from the anaconda prompt. I am hopeful that there is a simple fix here that I am overlooking or that other users have encountered the same issue and found a solution. Any help would be greatly appreciated. Thanks, Jeremy -- You received this message because you are subscribed to the Google Groups "ProjectChrono" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/projectchrono/07475c16-26a5-40e3-b563-c30b74d36c29n%40googlegroups.com<https://groups.google.com/d/msgid/projectchrono/07475c16-26a5-40e3-b563-c30b74d36c29n%40googlegroups.com?utm_medium=email&utm_source=footer>. -- You received this message because you are subscribed to the Google Groups "ProjectChrono" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]<mailto:[email protected]>. 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