I need some idea of what type of controller I should use. But, I am thinking of a PID controller.
Here is my problem:
I have a simple circuit like this one:
simulate this circuit – Schematic created using CircuitLab
In this circuit, the resistor R is time variance. My goal is to have a desired current amplitude to be generated through this circuit. My idea is to control the voltage source via a PID controller do you think it is possible? Do you have any other suggestion?
Update:
The load characteristic over a wide range of voltage looks like this: