Human – Robot Coordination For Multi – Sized Humanoid Robot Using Wireless

aid people working in hazardous situations such as defense, military and for those pursuing research, a robot based on replication technique capable of performing any task and which can be controlled via wireless link is proposed in this paper. These robots will be of immense use in such situations as they can don the roles of human beings. It has extensive monitoring and maneuvering capability attainable at a low driving voltage and has a good response to external stimuli. This paper presents the methods for making the robot's motion to be in congruence with that of the human being who operates it, obviating the need for sensors. An efficient design of cost effective robots of various sizes which can be interfaced with a single Teaching Hand Gripper (THG) designed specifically for the joints of the human for their operation has also been proposed. The THG is calibrated to overcome the discrepancies among potentiometers used for robot motion. The performance of the proposed system is tested on a robot with a single joint and the results are presented for a simple closed loop system. The robot is given fast, medium and slow responses as inputs such that a variation of 30 degrees is achieved in time intervals of 1, 2 and 3 sec. The output lag and the system efficiency are analyzed. The distance between the robot and the point of control can be up to 75km. The control signals are transmitted from the human to the robot via FM. These robots when under use in a hazardous situation can be efficiently operated from a safe environment.