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In recent years, robots working in human living space are increasing with development of robot technologies. Environmental information acquisition and human estimation are necessary to control the robots moving in this kind dynamic environment. In this study, we proposed a map generation method which can comprehend dynamic environment with SLAM technology. During the information acquisition of dynamic...
In this paper, we introduce a passive haptic device which consists of wires with servo brakes and its control method for physical support of human being. Since servo brakes control a point constrained by wires, this passive system is intrinsically safe and has a wide operating range. We especially develop a motion support system controlled on plane and conduct a path following experiment for illustrating...
This paper introduces a passive dance partner robot for realizing the effective human-robot cooperation. Different from the active-type robot with servo motors, the passive robot is controlled by the servo brakes attached to the wheels of the robot and its driving force is the actual force/moment applied by a human. We also propose a control architecture referred to as CAST (Control Architecture for...
A reliable predictor of drowsiness using objective measures is desirable for machine and vehicle operations in which human errors may cause fatal accidents. We have evaluated the Vestibulo-Ocular Reflex (VOR) as a possible predictor of drowsiness. The VOR is a compensatory eye movement that stabilizes retinal image during head motion, and is inevitably induced by vibration in a car running on the...
In this paper, we introduce a passive mobile robot called PRP (Passive Robot Porter), which has passive dynamics with respect to an applied force and its appropriate motion is controlled based on the servo brakes. In this paper, we especially focus on a motion control algorithm of multiple passive mobile robots for handling a large object in cooperation with a human. By controlling each passive mobile...
When supporting standing-up motion, a caregiver takes advantage of gravity force to make sufficient momentum without bearing heavy burden. The physical abilities or decision-making abilities decrease for many of elderly people who need care. We propose a self-help standing-up method for such people. The method with quasi-static motion in which the acceleration is approximated to zero, so as to keep...
In this research, we develop a passive dance partner robot for realizing the effective human-robot cooperation. Different from the active-type robot with servo motors, the passive robot is controlled by the servo brakes attached to the wheels of the robot and its driving force is the actual force/moment applied by a human. The maneuverability and the controllability of the passive robot are influenced...
In this paper, we propose a grasping mechanism for flat-shaped objects such as a dish, a plate, etc., inspired by humanpsilas lateral grasp. We analyze how the mechanism can grasp the object, and evaluate the robustness of the grasping against disturbance forces/moments applied to the grasping object. The mechanism is experimentally applied to handling of dishes, and several experimental results illustrate...
In this paper, we propose a user adaptive support system for sit-to-stand movement from a bed. The support system consists of a handrail and an electric bed which moves up and down. The evaluation indexes for the sit-to-stand movement based on a human model are introduced. By using these indexes, we set the parameters of the support system such as the handrail position, the height of the bed, and...
As aging progresses, fall accident of the person using the walker is an acute problem. It is necessary to know the situation of the userpsilas fall to prevent it. In this paper, we propose a method for estimating the userpsilas fall by modeling of the user in real time as a solid body link model, and pay attention to the center of gravity of the model. We also propose a method for controlling a passive...
In this paper, we introduce a passive wearable walking support system based on brake control referred to as ldquopassive wearable walking helperrdquo. According to the analysis of the walking of the human being, the knee joint has to support his/her weight during the walking, and the joint moment applied around the knee joint is large for supporting the weight. Consequently, in this paper, we pay...
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