Etude et Simulation du Fonctionnement d'un Ascenseur

Abstract

This thesis presents the design, programming, and simulation of the automated control of a three-story elevator. The work is based on a real educational bench developed by the Algerian company MICROTECHNOLOGIES LAB, controlled by a Schneider Electric Twido TWDLCDA24DRF compact Programmable Logic Controller (PLC) with 14 digital inputs and 10 relay outputs, programmed using the TwidoSuite V2.0 development environment. After a historical introduction tracing the evolution of lifting systems from Antiquity to contemporary gearless permanent magnet machines, the thesis details the functional architecture of a modern automated elevator (mechanical subsystems, control and command systems, and human-machine interface), the applicable international standards, and the functional safety requirements. The control system is modeled using Ladder logic. Validation is performed by simulation using the integrated Twido Simulator. All observed results conform to the specifications, demonstrating the reliability of the developed program.