title: Identification of apparently acausal stiffness models.
abstract: Discretization of dynamic stiffness models is shown to produce an a-causal impulse response. Expressions are derived for discrete-time impulse responses of first-and second-order derivatives. Enforcing periodicity gives rise to anti-causal components in these models. These models are used to describe the anti-causal components in identified stiffness models.
authors.affiliation: Department of Electrical and Computer Engineering, University of Calgary, dwestwic@ucalgary.ca.
authors.forename: David T
authors.initials: DT
authors.lastname: Westwick
authors.forename: Eric J
authors.initials: EJ
authors.lastname: Perreault