| 摘要 |
PROBLEM TO BE SOLVED: To satisfactorily maintain comfortableness at the time of a start of an elevator by correcting an exciting current instruction according to the operation state of the elevator. SOLUTION: Comfortableness is an important factor for an elevator, and a speed instruction generating means 100 generates a speed instruction ωR in consideration of it. The speed instruction ωR is inputted to a terminal on the addition side of an adding/subtracting means 110, the rotation angular velocity ωM of the rotor of a motor 60 detected by a speed detecting means 120 fitted to the rotor of the motor 60 is inputted to a terminal on the subtraction side of the adding/subtracting means 110, and a speed deviation is generated from the difference between them. A speed control means 130 generates the torque instruction ωR in response to the speed deviation. The torque instruction ωR is inputted to the addition side terminal of an adding/subtracting means 140. The instantaneous torque ωM generated in the motor 60 at this time from a generated torque estimating means 150 is inputted to the subtraction side terminal of the adding/subtracting means 140. |
