Dead band

DEAD_BAND

Type	Function
Input X	REAL (input)
L	REAL ( Lockout Value)
Output	REAL (output value)
	DEAD_BAND is a linear transfer function with dead zone. The function moves the positive part of the curve to -L and the negative part of the curve by +L. DEAD_BAND is used to filter a quantization noise and other noise components from a signal. DEAD_BAND, for example, is used in control systems in order to prevent that the controller permanently switches in small increments, while the actuator is overstressed and worn out.
	DEAD_BAND = X - SGN(X)*L if ABS(X)> L if ABS(X) > L
	DEAD_BAND = 0 if ABS(X) <= L