What causes
Hysteresis? Toward a
System-Theoretic Understanding of a Mislabeled Nonlinear Phenomenon
Professor Dennis S.
Bernstein
University
of Michigan
Department
of Aerospace Engineering
Hysteresis arises in diverse fields, and,
depending on the application, can be beneficial (for dissipating energy) or
detrimental (when degrading motion control). But what causes hysteresis? And what is it, anyway? The word ÔhysteresisÕ means lag, but
the word is a misnomer. In this
talk I will examine this mysterious phenomenon by analyzing finite-dimensional
dynamical systems that possess hysteresis in a precise sense. Applications to
damping and friction models, as well as methods for identifying hysteresis will
also be discussed.
Friday, September 15,
2006
3:30 – 4:30
p.m.
1500 EECS