Sway amount estimation system and elevator apparatus

A sway amount estimation system comprising:

• a sensor that senses sway of a building in which an elevator apparatus is provided, the elevator apparatus including a displacement amplifier that amplifies a displacement of part of an elevator rope in a longitudinal direction;
• and
• processing circuitry
• to judge if an estimated value of an amount of sway of the elevator rope due to vibration caused by the sway of the building is greater than a threshold for switching an operation method for the elevator apparatus, and
• to calculate the estimated value based on the sway sensed by the sensor and an estimation model incorporating an effect of displacement amplification of the displacement amplifier,
• wherein
• wherein when the elevator rope is a main rope for moving a car of an elevator,
• the processing circuitry judges if an estimated value of an amount of sway of the main rope due to vibration caused by the sway of the building is greater than the threshold,
• the processing circuitry calculates as the estimated value the amount of sway of the main rope based on the sway sensed by the sensor and the estimation model incorporating the effect of displacement amplification of the displacement amplifier,
• when the displacement amplifier is a device that amplifies the displacement due to vibration of the elevator rope when the displacement amplifier is in a first state, and does not amplify the displacement due to vibration of the elevator rope when the displacement amplifier is in a second state,
• the processing circuitry switches a state of the displacement amplifier to the first state if the car is stopped at a resonance floor when the sensor has sensed sway of the building, and
• after the state of the displacement amplifier has been switched, the processing circuitry calculates as the estimated value the amount of sway of the main rope based on the sway sensed by the sensor and the estimation model incorporating the effect of displacement amplification of the displacement amplifier in the first state.