Linear elevator velocity control system based on correction factor fuzzy PID

The elevator cab will vibrate because of the edge effect in the linear elevators that is driven by the permanent magnet linear synchronous motor (PMLSM). This article adopts correction factor fuzzy - PID control method in order to solve the vibration of elevator cab. The fuzzy control is not completely dependent on the mathematics model, but the fuzzy rules are obtained by experiences of authors or knowledge of experts. The correction factor fuzzy-PID can adjust the fuzzy rules so it has adaptability. And this method reduces the influence of edge effect in elevator cab. The simulations show that system has good tracking ability and inhibit the fluctuation of the thrust result in edge effect. So the elevator cab will become more comfortable and suitable for people. © 2008 IEEE.