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Future applications of wireless power transfer will include powering various devices in a room, charging electric vehicles in a parking area, charging moving robots and so on. Therefore practical wireless power transfer must be able to support complicated configurations for example combination of multi-receiver and repeaters. Many past works have discussed on methods for improving efficiency and more...
Accidents caused by automatic doors frequently occur. Infrared sensor or force sensor is often used for automatic doors to detect the presence of a human, and ensure the safety of doors. But in the case of train doors, we can not use infrared sensor and force sensor because of several reasons. In addition, train doors should be gated exactly not to disturb the train services. This paper suggests two...
Motor control to assist human force without a force sensor is designed based on two-degree-of-freedom control theory. First force sensor-less power assist control is designed and its robustness is analyzed. Then it is incorporated with the reference tracking control using the two degree-of-freedom control. The proposed control can design the motion with regarding to the reference and the motion with...
The motion of a wheelchair is different from any other vehicle. It needs control in three dimensions: the longitudinal, the lateral, and the pitch direction. This paper takes this point into consideration and provides a 3-D control of a wheelchair. We focus on the control of a push-rim power-assist wheelchair. The main objective of this paper is to provide a wheelchair rider with 3-D assistance that...
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