VIBRATION CONTROL OF SUPER-HIGH-SPEED ELEVATORS (CAR VIBRATION CONTROL METHOD BASED ON COMPUTER-SIMULATION AND EXPERIMENT USING A FULL-SIZECAR MODEL)

A new vibration control mechanism and control method for suppressing h orizontal vibration in super-high-speed elevator cars are considered h ere. The actuator consists of all AC servomotor and a ball screw, and the vibration of the cabin, detected by an acceleration sensor. The ac celeration signal is integrated to determine the velocity and the posi tion. The control force is determined based on the above position and velocity, and oil the velocity of a motor encoder taking into account the car dynamics. First, the dynamics of an elevator car with the cont rol are formulated, and the effect of the control on vibration suppres sion is evaluated by numerical simulation. The results indicate good p erformance of the vibration control system, which suppresses 1st- and 2nd-mode vibrations of the car. Furthermore, the control force and act uator 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. Fin ally, using this system, it is experimentally confirmed that the vibra tion control mechanism reduces fibration to half that of a control-fre e car.