Saturation¶

The saturation element is the most commonly encountered non-linearity in control engineering. It limits the input value to the upper and lower saturation values SU and SL.

If the input signal is greater than SU, the overflow output (OF) is set to logic 1. If the input signal is lower than SL, the underflow output (UF) is set to logic 1. But the analog output signal always stays between the limits.