ELEVATOR CONTROL SYSTEM FOR SYNCHRONOUS MOTOR

摘要

An elevator control system in which the elevator motor is a synchronous motor fed by a frequency converter. The elevator control system comprises a model (3) of the mechanical system, which is divided into a static part (1) and a variable part (2) dependent on load weight data, means for giving a speed and/or position reference (4), means for calculating the motor torque and speed requirements (5) on the basis of the model of the mechanical system and the speed and/or position reference (4), a parametrised model (6) of the motor, means for calculating the motor control quantities (7) on the basis of the parametrised model of the motor and the torque and speed requirements (5).