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@PhdThesis{yalov-phd,
author = {Sharon Yalov-Handzel},
title = {Stable Humanoid Whole Body Motion Generation},
school = {{B}ar {I}lan {U}niversity},
year = {2016},
wwwnote = {},
OPTannote = {} ,
abstract = {The stability of humanoids is fragile
and depends on the robot dynamics which are difficult
to plan in advance. Keeping humanoids stable along
their non-repetitive motion sequences is a great challenge
in robotics, and it is usually resolved by using
feedback control to consider the dynamic impacts. Off-line
planning of whole body stable motion cannot be resolved
by motion generators based on feedback control. We
propose an algorithm to plan stable whole body postures,
based on an IKP (Inverse Kinematics Problem) solver.
The IKP is extended to solve the kinematic
equations under any condition that can be represented
in geometrical form. Such a condition is the robot
stability. This numerical iterative algorithm can be
applied to any robot structure. In addition, the algorithm
can find a kinematic solution that obey a certain
optimization criteria, but is not complete. In order to
cope with the algorithm's incompleteness, we propose
some improvements that increase the convergence
probability of the solution. The algorithm was analyzed
and simulated and the core contribution of this work
is that it gives a general method for off-line planning
of complex postures applied to high DOF (degrees of freedom) robots
that should obey some condition. Moreover, the improvements
demonstrate that there is a tradeoff between the completeness
and the generality of the solver.
},
}