Vibration Control of Super-High-Speed Elevators : Car Vibration Control Method Based on Computer Simulation and Experiment Using a Full-Size Car Model

Abstract

A new vibration control mechanism and control method for suppressing horizontal vibration in super-high-speed elevator cars are considered here. The actuator consists of an AC servomotor and a ball screw, and the vibration of the cabin, detected by an acceleration sensor. The acceleration signal is integrated to determine the velocity and the position. The control force is determined based on the above position and velocity, and on the velocity of a motor encoder taking into account the car dynamics. First, the dynamics of an elevator car with the control are formulated, and the effect of the control on vibration suppression is evaluated by numerical simulation. The results indicate good performance of the vibration control system, which suppresses 1st- and 2nd-mode vibrations of the car. Furthermore, the control force and actuator stroke are within the practical range of designed values. Second, a vibration test equipment system using a full-size car is developed in order to test the performance of the vibration control system. Finally, using this system, it is experimentally confirmed that the vibration control mechanism reduces vibration to half that of a control-free car.