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MagSus
Anti-Vibration Technology for Elevator
To provide all the passengers comfortable elevator riding experiences, vibration and noise must be eliminated. The current Anti-vibration achievable target for elevator is preventing a 10 yen coin from toppling while the car is moving. However, this target is not sufficient enough to provide a comfortable ride to the passengers of the high –rise, high-speed elevator.
Toshiba has decided to move a step forward to the pursuit of quality riding comfort. After several years of researches and experiments, Toshiba has developed the world's first magnetic suspension elevator, MagSus.
Enhancing the Riding Comfort with Magnetic Levitation
Toshiba had developed the world's first magnet suspension elevator, MagSus, in 2006. The new technology used for MagSus will greatly enhance the riding comfort of the passengers because MagSus elevators are travel in the hoistway without any contact with the cage and guide rail, just like a linear motor.
Ordinary elevators are driven with ropes by motor. In the hoistway, the elevators are supported by the two sides of the guide rail and move upward or downward along the guide rails.
These elevator cars make contact with the guide rail via roller guide. When the roller guide passes through the connection between the guide rails, minor shock will occurs. The shock will be magnified as the speed inceases, especially on the elevators that travel with high speed.
A lot of effort had been made to reduce the shock due to the contact of the guide rail and roller guide. However, all these technical problems can be solved easily with the magnetic levitation power of MagSus.
Permanent magnet and Electromagnet, the Secret of Magsus
Magnetic Levitation
MagSus is developed from the integration of permanent magnet (allows the elevator car to run along the guide rails) and electromagnet (to control the stability of elevators car).
When the permanent magnet is near to the guide rail, a strong attraction force will be induced and lead to a firm holding force. The movement of the elevator car can be controlled by using electromagnet to adjust the magnetic field of the permanent magnet.
Merit of Magnetic Levitation
Traveling the in the electromagnetic field, allowing the sensor to estimate the distance and making adjustment on the magnetic field.
The magnet unit maintains the appropriate distance from the guide rail at the same time ease the vibration with the magnetic suspension. Hence, the vibration of the elevator car is under controlled.
Moreover, the elevator car is travel without making contact with the guide rail, which means the finishing and the connection of the guide rail are no longer an issue. In additional, the noise from roller guide can be eliminated too.
As a result, MagSus is the solution of comfortable and quiet riding experiences.
MagSus is meant to apply on the high-speed elevators (300m/min above) for high-rise buildings that are 100m and above. Toshiba is currently preparing MagSus for mass production.