High-bandwidth control of a piezoelectric nanopositioning stage in the presence of plantuncertainties

SS Aphale, S Devasia, SOR Moheimani - Nanotechnology, 2008 - iopscience.iop.org
Inversion-based feedforward techniques have been known to deliver accurate tracking
performance in the absence of plant parameter uncertainties. Piezoelectric stack actuated …

Tracking control and active disturbance rejection with application to noncircular machining

D Wu, K Chen, X Wang - International Journal of Machine Tools and …, 2007 - Elsevier
Control systems are usually required to track reference signals while operating under the
influence of disturbances. A fast tool servo system for noncircular machining application …

Iterative learning of dynamic inverse filters for feedforward tracking control

CW Chen, S Rai, TC Tsao - IEEE/Asme Transactions On …, 2019 - ieeexplore.ieee.org
A novel method to construct dynamic inversion compensation is proposed for feedforward
tracking control. In contrast to common approaches involving parametric system …

Analysis and design of the integrated controller for precise motion systems

SS Yeh, PL Hsu - IEEE Transactions on Control Systems …, 1999 - ieeexplore.ieee.org
Recently, feedforward controllers like zero phase error tracking controllers (ZPETC) and
cross-coupled controllers (CCC) have been developed to effectively reduce tracking error …

Convolution profiles for right inversion of multivariable non-minimum phase discrete-time systems

G Marro, D Prattichizzo, E Zattoni - Automatica, 2002 - Elsevier
The problem of the non-causal inversion of linear multivariable discrete-time systems is
analyzed in the geometric approach framework and is solved through the computation of …

Enhancement of active noise control using neural-based filtered-X algorithm

CY Chang, FB Luoh - Journal of sound and vibration, 2007 - Elsevier
This paper presents a neural-based filtered-X least-mean-square algorithm (NFXLMS) to
cancel the nonlinear broadband noise in an active noise control (ANC) system. The ways to …

Feedforward controllers and tracking accuracy in the presence of plant uncertainties

Y Zhao, S Jayasuriya - 1995 - asmedigitalcollection.asme.org
In the absence of plant parameter uncertainty feedforward controllers can be synthesized to
achieve perfect continuous tracking. When plant has uncertainties it is, in general …

Optimal suppression of laser beam jitter by high-order RLS adaptive control

PK Orzechowski, NY Chen, JS Gibson… - IEEE Transactions on …, 2008 - ieeexplore.ieee.org
This paper demonstrates high-performance adaptive control for a laser-beam steering
system, which exhibits high-order unknown jitter dynamics. The adaptive controller, which is …

Limit cycle analysis of active disturbance rejection control system with two nonlinearities

D Wu, K Chen - ISA transactions, 2014 - Elsevier
Introduction of nonlinearities to active disturbance rejection control algorithm might have
high control efficiency in some situations, but makes the systems with complex nonlinearity …

A robust loop-sha** approach to fast and accurate nanopositioning

SS Aphale, A Ferreira, SOR Moheimani - Sensors and Actuators A …, 2013 - Elsevier
Inherent nonlinearities as well as their sharp lightly-damped resonant mode severely limit
the positioning bandwidth of commercially available piezoelectric stack actuated …