Majalah Ilmiah UNIKOM
Vol.10 No. 1
65
H a l a m a n
DESIGN OF AN ELEVATOR GROUP CONTROLLER
USING TYPE-2 FUZZY LOGIC
MUHAMMAD ARIA
Department of Electrical Engineering
Engineering and Computer Science Faculty
Universitas Komputer Indonesia
The elevator group control systems are the control systems that manage
systematically two or more elevators in order to efficiently transport the
passengers. In the elevator group control system, the area-weight which
determines the load biases of elevators is a control parameter closely related to
the system performance. This paper proposes a type-2 fuzzy model to determine
the area-weight. The proposed method uses a two-stage fuzzy inference model
which is built by the study of expert knowledge. A software has been developed
to simulate the traffic flow of three elevator cars in a 15-floor building. The
software simulates the movements of the cars as found in practical elevator
systems. This simulation software was used to facilitate the evaluation of the
proposed Type 2 Fuzzy System strategy. The software allows simulation of
different passenger’s traffic situations. The Type 2 Fuzzy Logic System is
compared with Type 1 Fuzzy System. The simulation results show that the Type
2 Fuzzy Logic Controller has better performance in the case of heavy traffic
conditions. Type-2 Fuzzy Logic Controller reduced the average waiting time by 7
– 20 % and the long wait probability by 11 – 30 %.
Index Terms –
Long Wait Probability, Karnik-Mendel algorithms
I. INTRODUCTION
Buildings with thirty floors or more are
now a common sight in many cities around
the world. So the demand for more efficient
vertical transportation is rapidly increasing.
The installation of multiple elevator is one of
the nice solutions to cope with these trends.
The elevator group control system, as
shown in Figure 1, is a control system that
manages systematically three or more
elevators in a group to increase the service
for passengers and reduces the cost such
as power consumption.
Figure 1. Elevator Group Control Problem
bidang
REKAYASA