CONTROL DEVICE OF ELEVATOR
First Claim
1. A control device of an elevator, comprising:
- a model torque calculating section which calculates, on the basis of a speed instruction value for an electric motor which drives an elevator, a model torque instruction value of the electric motor which is independent of a rotation speed of the electric motor;
a storage section which stores a relationship between a speed-dependent loss torque of the electric motor which varies due to variations in the rotation speed of the electric motor and the rotation speed of the electric motor;
a speed-dependent loss torque calculating section which calculates, on the basis of a detected value of the rotation speed of the electric motor, a speed-dependent loss torque value correlated to the detected value; and
a driving torque calculating section which calculates a torque instruction value for driving the electric motor by adding the speed-dependent loss torque value correlated to the detected value to the model instruction value.
1 Assignment
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Accused Products
Abstract
A control device of an elevator improving the speed control performance by performing feedforward compensation. The control device includes a model torque calculating section which calculates, based on a speed instruction value for an electric motor, a model torque instruction value of the electric motor, a storage section which stores the relationship between the speed-dependent loss torque of the electric motor which varies due to variations in the rotation speed of the electric motor and the rotation speed of the electric motor, a speed-dependent loss torque calculating section which calculates, based on a detected value of the rotation speed of the electric motor, a speed-dependent loss torque value correlated to the detected value, and a driving torque calculating section which calculates a torque instruction value by adding the speed-dependent loss torque value correlated to the detected value to the model instruction value.
12 Citations
6 Claims
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1. A control device of an elevator, comprising:
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a model torque calculating section which calculates, on the basis of a speed instruction value for an electric motor which drives an elevator, a model torque instruction value of the electric motor which is independent of a rotation speed of the electric motor; a storage section which stores a relationship between a speed-dependent loss torque of the electric motor which varies due to variations in the rotation speed of the electric motor and the rotation speed of the electric motor; a speed-dependent loss torque calculating section which calculates, on the basis of a detected value of the rotation speed of the electric motor, a speed-dependent loss torque value correlated to the detected value; and a driving torque calculating section which calculates a torque instruction value for driving the electric motor by adding the speed-dependent loss torque value correlated to the detected value to the model instruction value. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification