how can I load library 'ehsCpuLib' in MATLAB simulation. currently I am using MATLAB version R2019A

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currently I am using MATLAB version R2019A. While running the simulation which is compatible with rt lab, i get an error message "Failed to load library ehsLibCpu".

Accepted Answer

Simar
Simar on 11 Jun 2024
Edited: Simar on 11 Jun 2024
Hi Nymisha,
I understand that you are facing difficulty with MATLAB (version R2019A) when running simulation that is compatible with RT-LAB.The error message "Failed to load library ehsLibCpu" typically indicates an issue with finding or loading a specific library required for executing simulations, especially in real-time or hardware-in-the-loop (HIL) environments like RT-LAB. This problem can arise due to several reasons, including incorrect installation paths, missing dependencies, or compatibility issues.
Here are steps to troubleshoot and potentially resolve this issue:
  • Verify Installation Paths: Check that the ehsLibCpu library exists in the installation directory of RT-LAB or the specified path where MATLAB expects to find it.
  • Check Environment Variables: Ensure that the environment variables related to RT-LAB and its libraries are correctly set. This includes paths to any runtime libraries or binaries required by RT-LAB. Check and modify environment variables through the System Properties in Windows.
  • Compatibility Check: Ensure the version of RT-LAB is compatible with MATLAB R2019a. If there is a compatibility issue, update RT-LAB, MATLAB, or both.
  • MATLAB Path: Ensure that MATLAB path includes the directories containing the RT-LAB libraries. Add directories to MATLAB's path using the addpath function. Addpath- https://www.mathworks.com/help/matlab/ref/addpath.html?searchHighlight=addpath&s_tid=srchtitle_support_results_1_addpath
  • Run as Administrator: Permission issues can prevent MATLAB or RT-LAB from accessing certain libraries. Try running MATLAB as an administrator to see if that resolves the issue.
Please refer to RT-LAB Documentation for troubleshooting on the issue-
Would require a bit of investigation to pinpoint the exact cause, but by systematically going through these steps, it should help to resolve it.
Hope it helps!
Best Regards,
Simar

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