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IJEMS Vol.12(4) [August 2005] >

Title: Design and implementation of PLC cum micro-controller based electrically synchronized lift
Authors: Sivanandam, S N
Sumathi, S
Deepa, S N
Issue Date: Aug-2005
Publisher: CSIR
IPC CodeH02P6/00
Abstract: Automobile industry is developing most extravagantly. The maintenance of the automobiles plays an important role, which is achieved by latest service station equipments. Electro-mechanical two-post lift is used to lift the vehicle to top or bottom and performs the required service operations under chassis. As in the present design and fabrication of the two-post lift, sprockets and chain mechanism are present for the transmission of the drive, but this results in slight non-linearity in the arm arrangements. This non-linearity in worst case may result in destruction of the automobile placed on the lift. The main aim of this paper is to avoid this non-linearity hence synchronization control of the arm movements is proposed for automating the lift, by removing the sprocket and chain mechanisms. The synchronization is implemented using two types of controllers, which includes micro-controller and the programmable logic controller. An inductive proximity sensor is selected to sense the rotation of the motors and produce pulses, which is used to control the movement of arm arrangements. The micro-controller programming is implemented using the software AVR Studio 3.5. The programmable logic controller programming is performed using the software STEP-7 Micro/Win 32.
Page(s): 269-277
ISSN: 0975-1017 (Online); 0971-4588 (Print)
Source:IJEMS Vol.12(4) [August 2005]

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