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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...
A novel motion control algorithm was introduced to achieve dance between a man and a passive type robot (PDR), which can not move by itself, but can guarantee higher level of safety in the process of human-robot cooperation. Firstly, the characteristics of servo brake were analyzed, and the motion was divided into 8 states according to the kinematic model and control constraint condition. Then feasible...
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...
In this paper, we introduce a passive mobile robot with casters developed based on the concept of passive robotics. This mobile robot consists of two casters with servo brakes, one passive rigid wheel and a controller. We can manipulate the robot by controlling external force/moment applied by a human based on the control of the servo brakes attached to the casters. We consider the characteristics...
In this paper, we propose an intelligent cane developed based on passive robotics concept for supporting the elderly and the disabled persons who have difficulty walking. The intelligent passive cane (IP Cane) is controlled by servo brakes attached to the wheels and intrinsically safe for humans, because it cannot move unintentionally, i.e., it has no driving actuators. In addition, the IP cane provides...
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...
In this paper, we introduce omni-directional object handling robot system developed based on passive robotics and propose its motion control algorithm for realizing variable motion characteristics of the handling object. Passive object handling robot called PRP (Passive Robot Porter) is controlled by servo brakes attached to the wheels of the robot. By designing the control algorithms of the servo...
We propose a new intelligent walker based on passive robotics that assists the elderly, handicapped people, and the blind who have difficulty in walking. We developed a prototype of the robot technology walker (RT walker), a passive intelligent walker that uses servo brakes. The RT walker consists of a support frame, two casters, two wheels equipped with servo brakes, and it has passive dynamics that...
In this paper, we propose a concept of a passive type robot for transporting a single object in coordination with a human operator. We developed a prototype of passive type robot referred to as RT Porter, which consists of support frame, three omni-directional wheels with MR brakes, and onboard computer system. In this research, we control the brake torque of each wheel based on the brake force/moment...
An omnidirectional passive walking aid system called "Omni RT Walker" (omnidirectional robot-technology walker) is proposed in this paper. Omni RT Walker consists of an omnidirectional platform with servo brake system, an onboard control unit and a frame. The system is called passive since it excludes motion generating parts such as wheel actuators and translates by force applied by its...
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