Development of novel hydraulic 3D printed actuator using electrorheological fluid for robotic endoscopy
Endoscopy has made a significant and noteworthy contribution to the field of medical science and technology. Nevertheless, its potential remains constrained due to the limited availability of rigid or flexible endoscopes. This paper introduces a novel hydraulic actuator based on electrorheological f...
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| Main Authors: | , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
23 March 2024
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| In: |
Actuators
Year: 2024, Volume: 13, Issue: 4, Pages: 1-12 |
| ISSN: | 2076-0825 |
| DOI: | 10.3390/act13040119 |
| Online Access: | Verlag, kostenfrei, Volltext: https://doi.org/10.3390/act13040119 Verlag, kostenfrei, Volltext: https://www.mdpi.com/2076-0825/13/4/119 
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| Author Notes: | Fabian Sadi, Jan Holthausen, Jan Stallkamp and Marius Siegfarth |
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| 520 | |a Endoscopy has made a significant and noteworthy contribution to the field of medical science and technology. Nevertheless, its potential remains constrained due to the limited availability of rigid or flexible endoscopes. This paper introduces a novel hydraulic actuator based on electrorheological fluid (ERF) as a pivotal advancement in bridging the existing gap within the realm of endoscopy. Following a comprehensive introduction that briefly outlines the electrorheological effect, the subsequent section is dedicated to the elucidation of the actuator’s development process. Challenges arise, particularly in terms of miniaturization and the realization of a hydraulically sealed system with integrated valve electrodes. An internal electrorheological valve system consisting of four valves that are controlled using a pulse-width modulated high voltage was suitable for position control of the antagonistic hydraulic actuators. High-precision stereolithography (SLA) printing has proven practical for manufacturing actuator components. For functional testing, a test bench was set up in which the actuator follows a setpoint through a PI control loop. The control deviation ranged from 0.6 to 1 degree, with a response time between 6 and 8 s. The experiments have demonstrated that through the use of ERF and integrated valve electrodes, a miniaturized functional actuator can be constructed. | ||
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