Synchronized Multi-Motor Lift System

This paper proposes the development of an intelligent control system for applications where multiple Induction Motors are required to be operated in order to raise and lower platforms carrying heavy cargo. The speed of the induction motors is controlled using V IF control, with the goal of making the platform level at all times. A set of motors are placed on each side of the platform, which operate in parallel. A three-leg inverter and microcontroller help control the speed and direction of the motors in order to facilitate a smooth lifting and lowering of the platform. A simulation of the entire prototype was developed on MATLAB Simulink, along with a visual representation of the same on Simscape Multibody. The control algorithm is implemented on a scale model by using PMDC motors with an accelerometer to sense the tilt.