The muscle contraction mechanics was described using a modified Hill's model with a Contractile Element (CE), a parallel elastic element and a serial elastic element.
In this case, the elastic element is given by a Bernoulli-Euler beam.
This viscoelastic model is constructed from mass, elastic element and viscosity element.
Sensitivity analysis was conducted to investigate the effect of the CE's force-length relationship, the CE's force-velocity relationship, the force-length relationship of the serial elastic element, the parallel elastic element and the pennation angle on the system stability.
In an electronic load cell, the gravitational force on the body being measured is applied to an elastic element.
The plants under investigation are underactuated lumped and distributed parameter systems, which consist of two masses and an elastic element.
For the SEA, both are minimized by tuning the elastic element to the antiresonance frequency of the actuator.
Furthermore, associated adaptation of connective tissues in absence of desmin was modelled as an additional elastic element.
The non-linear elastic element is made of a very thin beam clamped between tapered ends.
Simulations demonstrate that the SEA and PEA allow to decrease both peak power and energy consumption, provided that the stiffness of their elastic element is tuned properly.
This paper presents the development of a compact torsion spring for use as an elastic element in a lightweight series elastic actuator for an active orthosis.
