Abstract
Essential Tremor (ET) is a kind of tremor and the cause isn't understood. In general, ET is suppressed by medicines which may give a patient side effects and not give enough effects. Therefore, another suppression method which is more reliable and doesn't give physical stress very much is required. Hence, we propose a method to suppress ET by using an exoskeleton robot. In this paper, we measure upper-limb's motions by using the upper-limb's motion measuring system as a preliminary experiment. The system consists of an encoder and 3 accelerometers and gyroscopes and can measure an upper-limb's motion three-dimensionally. In the experiments, subjects are healthy persons and they imitated an ET patient motion. From the results, it was confirmed that hands of subjects with tremor movement move three-dimensionally.