抄録
Recently, riding quality becomes an important item for elevator system. Many studies on vibration suppression of elevator have been conducted. In this paper, vertical vibration suppression by controlling the torque of the elevator traction machine motor is discussed. Additionally, the effects of the switching of linear controllers designed by H-infinity control theory according to the position of the elevator are also examined because the transfer characteristic from motor torque to car acceleration depends on the rope length from the car to the main sheave. The simulation result shows that the car vertical vibration is efficiently suppressed by adopting this method.
