We wanted to do more simulations with Simulink models to help cut back on physical prototypes. We started tracking time spent to get the results of these simulations. Most of our engineers' time was spent finding the right models, setting them up, and configuring these simulations. They didn't have much time left to do modeling and testing work.

At first we just created some "Bill Of Models" to define systems and simulations. Slowly we've expanded the scope. Each BOM contains a system definition, components, subcomponents, interfaces, and some metadata. There's pointers to different repositories, parameter databases, and scripts to configure runtime environments. We have a small tool that reads BOMs and instantiates them as full simulations.

When someone wants to test a new system variant, they can usually just modify an existing BOM. If they have a new feature, BOMs give them an easy way to see and create every variant simulation to work with. We had to do a lot of standardization of our models, but that helped our efforts to move toward fully automated tests and CI/CD. We now have a web-based catalog of models and BOMs that are automatically generated, run, and tested. All of this has also helped get new people to use simulations for their work.