A hydrostatic robot for marine applications

R Vaidyanathan, HJ Chiel, RD Quinn

Research output: Contribution to journalArticle (Academic Journal)peer-review

52 Citations (Scopus)


Invertebrates that use a fluid-filled cavity surrounded by contractile tissue (a hydrostatic skeleton) propel themselves efficiently underwater and penetrate regions inaccessible to legged or wheeled devices. A hydrostatic robot would therefore be invaluable for exploring marine environments. We have constructed a three-segment hydrostatic robot that locomotes underwater. Each segment consists of two solid circular disks connected by four equidistant shape memory alloy springs. A fluid-filled bladder in the center of each segment provides hydrostatic skeletal support. The 15.5 cm long robot moves at speeds up to 0.6 cm/s, can turn up to 21°, and can change its length by up to 16%. A model of the robot’s kinematics has also been developed.
Translated title of the contributionA hydrostatic robot for marine applications
Original languageEnglish
Pages (from-to)103 - 113
Number of pages10
JournalRobotics and Autonomous Systems
Publication statusPublished - Jan 2000

Bibliographical note

Publisher: Elsevier


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