Scheduling modern elevators : A comparison of the two algorithms FSO and FS4

Sammanfattning: Two of the most common elevator algorithms, FS4 and FSO, are discussed in this thesis. Their pros and cons regarding passenger waiting time and energy consumption are compared to find which of the algorithms perform best and what factors affect this. These topics are of interest for owners of modern building.By developing a simulation program the behavior of elevators controlled by these algorithms were simulated. Passenger pattern in the simulation was meant to emulate the pattern that occurs in office buildings at lunch hour.The conclusion is that due to differences in sector usage and specific rules for each algorithm they have different strengths concerning waiting time and energy consumption, but overall the FS4 is the stronger choice.