Considerations on Designing Artificial Muscle Working at High Pressure

Abstract:

Artificial muscle is a new style of actuator with novel working principle, which owns the advantages of compact structure, high power-to-weight ratio, compliance and easy application. Pneumatic artificial muscle (PAM) is usually used in robotics, medical auxiliaries and other small force output occasions nowadays. However, it suffers problems of small power, hysteresis and poor repeatability. A kind of artificial muscle working at high pressure was researched. Different muscle styles are compared and MicKibben structure is selected while fluid media is determined. Furthermore, factors of geometry and material properties, which limit the ultimate pressure, are analyzed. Formulas and simulations verify the influence of limitation and help to calculate key parameters of 18MPa artificial muscle. Data show that it is possible in theory to design high pressure artificial muscle by overall consideration of initial diameter, initial contraction angle and material properties, initial length only influent the stroke.

• Periodical: Applied Mechanics and Materials (Volumes 268-270)
• Pages: 1457-1463
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.268-270.1457
• Online since: December 2012
• Authors: Li Chao Wang, Xiao Dong Wang
• Keywords: Artificial Muscles, Hydraulic, Limiting Factors, Pneumatic

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