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The estimated stiffness after the rigid behavior was 17.2 kN/mm.
Consequently, representing the micro-scale geometric uncertainties within the developed multi-scale probabilistic-based framework improves the estimated stiffness.
The estimated stiffness trend is then scaled and mapped to a task-related stiffness interval to agree with the desired degree of assistance.
Average absolute error in the estimated stiffness values of 1.4% is achieved for a 20-DOF unknown mass system with 5% noise, and even more importantly the maximum error is reduced to only 3.8%.
The estimated stiffness function, together with its first two derivatives with respect to the deformation, is used within a feedback linearization controller designed for simultaneous tracking of desired trajectories for the links and the device stiffnesses.
Comparisons are made between a black-box MRAC design using the 'minimum controller synthesis' method and a grey-box approach which adaptively modifies PI controller settings based on estimated stiffness.
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The purpose of this study was to develop a mechanical testing system to estimate stiffness of an experimental porcine mandibular distraction osteogenesis (DO) wound.
This paper presents a system identification scheme in time domain to estimate stiffness and damping parameters of a structure using measured acceleration.
The most recent or well-established analytical theories have been implemented to estimate stiffness and strength properties under loads perpendicular or parallel to the principal plane of CLT panels from laboratory tests.
Unlike common AFM or magnetic bead techniques to estimate stiffness, which measure sample deformation through cantilever bending or bead movement, our setup uses microscopic beads resting over a fiber to track surface deformation.
Further studies are required to determine the relationship between YM, estimated renal stiffness, and renal fibrosis severity.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com