Abstract
The major issues of interest in Section IV can be illuminated by considering a simple, everyday task: picking up an object (say of medium-weight) off the floor and placing it in a new location (say at a specific spot on a tabletop). Of note is that robots have a surprisingly difficult time performing such “simple” tasks. Let’s assume that our goal is quite practical: to successfully complete this task without undue effort. One fundamental issue is related to tissue loading: clearly high loads in various passive and muscular tissues are undesirable. Since tissue loading is likely to be a function of how the task is completed, this concern may influence movement strategy. Another fundamental consideration in completing this task is to not have any part of the body buckle or the whole body fall: local mechanical stability (e.g. of the spine) and overall dynamic stability (i.e. “good balance”) must be satisfied. Furthermore, some margin of safety is desired, first because of inherent neural and mechanical “noise” and second in anticipation of the unforeseen (e.g., the object weight is different than expected)
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Andersson, G.B.J., Winters, J.M. (1990). Role of Muscle in Postural Tasks: Spinal Loading and Postural Stability. In: Winters, J.M., Woo, S.LY. (eds) Multiple Muscle Systems. Springer, New York, NY. https://doi.org/10.1007/978-1-4613-9030-5_23
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