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The motion of a passive-type intelligent walker is controlled based on visual estimation of the motion state of the user. The controlled walker would be a support for standing up and prevent the user from falling down. The visual motion analysis detects and tracks the human upper body parts and localizes them in 3D using a stereovision approach. Using this data the user's state is estimated to be...
We introduce a passive mobile robot called CPRP (Caster-type Passive Robot Porter). This robot consists of multiple casters with servo brakes and a controller. C-PRP employs passive dynamics with respect to the force applied by a human. Its appropriate motion is controlled using the servo brakes. In this paper, we derive and analyze a feasible braking force/moment that can be applied to the robot...
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 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...
In this paper, a passive type dance partner robot referred to as PDR (passive dance robot) is presented to realize ballroom dances in cooperation with a human. PDR is developed based on the concept of passive robotics. Compared to the active type robot actuated by servo motors, the passive type robot can guarantee higher level of safety, since this kind of robot moves passively based on the force...
In this paper, we propose a concept on realizing impedance-based motion control of passive type robots for transporting a single object in coordination with a human operator. In this research, we developed a prototype of passive type robot referred to as passive robot porter or PRP, which consists of three omni-directional wheels with MR Brakes, and on-board computer system. We analyze the singularity...
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