Abstract
A representative vibration model for an electric lift is developed and analysed. Apart from the equations of motion for the lift components, equations are also derived for the rate of change of the rope tensions assuming that the rope elasticity is inversely proportional to rope length. Since an analytical solution is not possible, a Continuous System Modeling Program (CSMP) is written to simulate the lift operation in the computer. Results of a trial computer run for a typical lift which is accelerated down and suddenly stopped by application of the emergency safety clamp are given.
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