円筒型リニアモータを用いた昇降用アクチュエータの開発 （ケーブル材による推力特性に関する基礎的検討）

抄録

Elevators are used to carry people and luggage in large buildings such as skyscrapers. At present, such a device is driven up and down by using the frictional force generated by bringing it into contact with a cable using pulleys or tires. However, when the friction coefficient of the cable is small, the force in the direction of the contact surface increases because the friction force exceeding the weight of the device is required. This generation of large force lead to decrease the lifetime of the cable. In order to extend the lifetime of such a device, an actuator capable of ascending and descending without mechanical contact is required. Therefore, this research group proposes an actuator using a linear induction motor that ascends and descends a uniform cable with a conductor as a reaction plate. The proposed actuator uses a cylindrical linear induction motor. Cylindrical linear motors can passively generate a restoring force against gap fluctuations that are difficult with flat linear motors, so stable running can be expected. As fundamental studies of the actuator proposed in this research, electromagnetic field analysis was performed on a cylindrical linear induction motor, and the use as an actuator for elevation was examined from the thrust characteristics that can be exerted.