I am trying to understand the fundamental difference between the following terms in the context of control systems:
- Low pass filter
Are these just fancy names that can be tweaked to provide same result? By tweaking I mean some intelligent way of formulating the variables, such as using the absolute value of the output variable, instead of delta between current and previous value.
I can conceptually think of examples where the same behavior can be achieved by how we tweak any of the above three techniques. However, I am concerned that such tweaking is essentially changing the fundamental meaning of the term itself.