>> Closed loop (feedback) system
In a closed loop control system, the input is adjusted function of the output of the system. This means that any disturbances affecting the system will be compensated by the input.
https://www.electronics-tutorials.ws/systems/closed-loop-system.html
>> Open loop (feedforward) control system
The open loop control system can adjust it’s input based on known disturbances. This control systems are called feedforward control systems. Knowing or measuring the amplitude and type of disturbance, the input signal can be modified in such a way that it compensate for the changing output.
