Journal: Biomimetics
Article Title: Peristaltic Motion Enabled by Pneumatic Artificial Muscles (PAMs) as Structural “Soft–Stiff” Actuators in a Modular Worm-Inspired Robot
doi: 10.3390/biomimetics9080447
Figure Lengend Snippet: Diagram showing the three parabolic curves that the loft surfaces were generated between. The coefficients of the quadratic functions depend on the outer radius of the PAM connector and the CCS parameters, and were generated by a MATLAB code inspired by the GRACE proposal paper. Each function is defined so that each curve starts at the PAM connector and ends at their respective point on the CCS.
Article Snippet: E.O.M. for mass 1: m p x 1 ̈ = − F r s E.O.M. for mass 2: m p x 2 ̈ + k c x 2 − k c x 3 = − F r s − F r P 2 E.O.M. for mass 3: m p x 3 ̈ − k c x 2 + ( k c + k e ) x 3 − k e x 4 = − F r P 3 E.O.M. for mass 4: m p x 4 ̈ − k e x 3 + ( 2 k e ) x 4 − k e x 5 = − F r P 4 E.O.M. for mass 5: m p x 5 ̈ − k e x 4 + k e x 5 = − F r P 5 A MATLAB 2019a script was used to solve the system of equations of motion numerically.
Techniques: Generated