Patent ID: 7424934

Claim:
A method for vibration damping at an elevator car using a regulator, wherein a regulator design is based on a model of the elevator car, comprising the steps of: a. determining an overall model of the elevator car with model parameters which are at least one of known and estimated; b. identifying the parameters for the elevator car by comparison of at least one of transfer functions and frequency responses of the model with respective measured transfer functions and measured frequency responses; c. changing the model parameters in order to achieve a greatest possible correspondence with the measured frequency responses; d. designing an optimum regulator for active vibration damping of the elevator car, wherein the model together with the identified parameters serves as a basis for the design; and e. providing the elevator car with an active damping system as the regulator having the optimum regulator design, the active damping system including actuators for exciting the elevator car and measuring the frequency responses for use in step b.