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Fatigue is modeled as a smooth of the normalized input u which is indicating the current workload with regard to capital equipment or workers. The current workload will be normalized by dividing the input u by a constant or a variable reference workload (referenceWorkload
or u_ref
, respectively). The timeToGetFatigued
describes the time constant for the smooth and indicates the lag between beginning to work at an excessive level and the onset of the full effect on productivity (or quality).
Janoscheks growth curve is used to model the nonlinear effect of a prolonged work intensity. It describes a negatively sloping s-shaped curve that will pass through the reference point (1,1). The upper bound of the effect (effectMax
) must be given slightly above 1.0 as the curve will collapse in all other cases. If the effect is to be clipped at 1.0 then the parameter clipEffect
should be set to true
.
hours worked per month
, output per hour
etc.).init
in the Advanced tab allows to select →InitializationOptions:initialFatigue
to determine the initial output of the smoothed, normalized workload.fatigue
using initialFatigue
as an initial guess.