Control Systems

Wikipedia states the following:

A control system manages, commands, directs, or regulates the behavior of other devices or systems using control loops.

This section covers packages that provide the tools needed to create and analyze control systems in Julia.

ControlSystems.jl

There is a github organization called JuliaControl, the star of which is ControlSystems.jl. It is a Control Systems Toolbox for Julia, and provides a lot of common functionality for working with control systems.

ModelPredictiveControl.jl

A new and much less used/tested package is ModelPredictiveControl.jl. I the author can not speak to its capabilities.

Other

While not directly aimed at control systems, ModelingToolkit.jl is also capable of performing some of the modeling and analysis typical for this domain. It is however a more general framework with a different focus, and so, will require more lines of code to perform similar analysis. The upside is that due to its general and flexible nature, it may be easier to extend for some projects as they grow.