Bilateral Teleoperation Based on Modal System Design

摘要

Technology for teleoperation has been needed in many scenes. Especially in robotic surgery, It is required that to transmit the tactile sensation to the operator. To attain that need, teleoperation method called bilateral has developed. Bilateral means transmit information each other. Environmental information is transmitted both from master to slave and from slave to master in bilateral teleopera- tion. In bilateral teleoperation, environmental information of master and slave should be exchanged in common coordinates. It is difficult to define a common coordinates in different structured bilateral teleoperation. Mode based control for bilateral teleoperation is proposed in this paper. Coordinates based on geometric mode is used to common coordinates to exchange the environmental information be- tween master robot and slave robot. Geometric environmen- tal mode is quarried by quarry matrix and hypothetical axes bilateral controller based on acceleration control is applied to hypothetical mode motors. Hypothetical mode master motor and mode slave motor are transformed to mode common motor and mode differential motor. Force servo controller is applied to mode common motor and position regulator is applied to mode differential motor. Viability of proposed method is shown in experimental result.