Undershoot Reduction Method

It is well known that undershoot phenomena are
inevitable for plants having real unstable zeros.
This book, firstly investigate the undershoot
phenomena caused by unstable zeros of the plant to be
controlled theoretically. Then, propose methods of
reducing the undershoot amount for a plant with
unstable zeros by digital control. The ideas are
based on the Linear Quadratic Regulator (LQR) design
is to use a modified performance index with an
exponential time decay rate using a weighting factor
and confirm from simulation results that the weighted
optimal LQR can reduce undershoot in comparison with
the standard LQR case.The next method to reducing
the undershoot amount is by using digital control
design. The idea here is a combination of the
discrete version of the weighted optimal LQR and a
discrete-time controller design with Piecewise
Constant Hold (PCH) instead of Zero Order Hold (ZOH).
By using PCH can change the inter-sample control
input so as to reduce the undershoot amount. The
effectiveness of all method have evaluated by
dynamical system.

Autorentext

Ferry Hadary received the B. Eng from Tanjungpura University,1995; M. Eng from Tokyo Institute of Technology, Japan, 2003; andDr. Eng from Kyushu Institute of Technology, Japan, 2007. Since1995 he has been working as a lecturer at Engineering Faculty,Department of Electrical Engineering, Tanjungpura University,Pontianak, Indonesia.

Klappentext

It is well known that undershoot phenomena areinevitable for plants having real unstable zeros.This book, firstly investigate the undershootphenomena caused by unstable zeros of the plant to becontrolled theoretically. Then, propose methods ofreducing the undershoot amount for a plant withunstable zeros by digital control. The ideas arebased on the Linear Quadratic Regulator (LQR) designis to use a modified performance index with anexponential time decay rate using a weighting factorand confirm from simulation results that the weightedoptimal LQR can reduce undershoot in comparison withthe standard LQR case. The next method to reducingthe undershoot amount is by using digital controldesign. The idea here is a combination of thediscrete version of the weighted optimal LQR and adiscrete-time controller design with PiecewiseConstant Hold (PCH) instead of Zero Order Hold (ZOH).By using PCH can change the inter-sample controlinput so as to reduce the undershoot amount. Theeffectiveness of all method have evaluated bydynamical system.