Formulas

Transfer function

The transfer function for Y is:

Calculation formula for Y

The calculation formula for Y is:

Special case: lag =0

This amounts to pure differentiation without a 1st order time limiter.

In this situation the transfer function is:

The formula of calculation is:

Meaning of the sizes

The meaning of the formula sizes is as follows:

Variable	Meaning
	the input X value for the current cycle
	the input X value from the previous cycle
	the output Y value from the previous cycle
	is the time differential between the current cycle and the previous cycle