Model of a smooth thooth signal.
The output ( y ) remains at its initial
value yin until the enabling input
ENup remains false.
Then the signal changes smoothly. After the smoth start the signal
grows up linearly with a slope m. When
the output signal is close to the final value yfin, it is reached smoothly.
The signal returns at its initial value in a specular way, when the
input ENup becomes true.
The parameter alfa (that has to be
coprises between 0 and 1), indicates the portion of the rising time
occupied by the smooth junction.
The rising is delayed by wait_s
seconds, while the falling is delayed by wait_d seconds.
Initial and final values are externally defined.
Fixed Point not available in this model