LQG Feedforward Regulator Design for Deterministic and
Report UPTEC 89058R , August 1989.
Linear feedforward regulators can be designed by solving
a spectral factorization and a linear polynomial equation.
A quadratic criterion with penalty on a filtered control signal
is minimized. This constitutes a simple systematic way
to design feedforward regulators for non-minimum phase
The approach is discussed for disturbances modelled by
systems with poles on the stability limit.
Regulators can be designed for
shape-deterministic disturbances, such as random step and
ramp sequences, in the same way as for
- Related publications:
Paper in IJC 1991,
on adaptive scalar LQG combined feedback and
on multivariable LQG feedforward
and adaptive LQG control.
Paper in IJC 1993,
on the duality between feedforward control and deconvolution.
Paper in Automatica 1993
which includes the robust design of
scalar feedforward filters.
by Kenth Öhrn 1996, with robust design of
multivariable feedforward filters.