Feedback Control to Target Joints Angle in Middle Finger PIP and MP Joint Using Functional Electrical Stimulation

Autor: Makoto Oka, Kyosuke Watanabe, Hirohiko Mori
Rok vydání: 2019
Předmět:
Zdroj: Human Interface and the Management of Information. Information in Intelligent Systems ISBN: 9783030226480
HCI (5)
DOI: 10.1007/978-3-030-22649-7_35
Popis: In our dairy life, we often have opportunities to give others some tips of finger movements. If we can control the joints angle of each finger to the target joints angle by functional electrical stimulation, it is possible to give others some tips of finger movements. However, controlling the detail movements of fingers by functional electrical stimulation has not realized so far, because the structures of the musculoskeletal system involved in finger movement is very complicated. In this paper, we proposed a controller to control the PIP joint (the second joint of the finger) and MP joint (the third joint of the finger) in the middle finger to the arbitrary target joints angles by giving the electrical stimuli to the flexor digitorum muscle and the extensor digitorum muscle. Based on the knowledge about the relationships of the PIP/MP joints and the muscles, in our controller, the amounts to the flexor digitorum muscle and extensor digitorum muscle comparing with the current joint angles. First, we investigated we can control the PIP and MP joint to the given static target angles. As the result, it was possible to control both of PIP and MP joint to the arbitrary target. We also adopted this controller to control the joints to the target angles which change with time dynamically. Among these trials, we sometimes succeeded to track the changing target angles with time accurately but sometimes failed, in spite of performing the same tasks.
Databáze: OpenAIRE