▣ Title : Quasilinear Control

▣ Speaker

: Prof. YongsoonEun(DGIST)

▣ Date

& Time : Friday, June 7 (2:00 ~ 3:30pm)

▣ Place

: LG Research Building, Room #101

▣ Host

: Prof. SangchulWon (Tel. 2221)

▣ Abstract :

 This talk provides an overview of QuasilinearControl (QLC).

QLC

is a set of methods for performance analysis and design of feedback systems

with nonlinear actuators and sensors. The approach of QLC is based on the

method of stochastic linearization, which reduces the nonlinearities of

actuators and sensors to quasilineargains. Unlike the usual, Jacobianlinearization, stochastic linearization is global. The price to pay is that thequasilineargain depends not on the operating point but on all functional blocks and

exogenous signals of the system. Using this approximation, QLC extends

most methods of linear control theory to systems with nonlinear

instrumentation. These include: system type, error coefficients, transients

characteristics, admissible domains, root locus, LQR/LQG, and H∞.

In addition, QLC addresses problems that are specific for systems with

nonlinear actuators and sensors such as simultaneous design of control and

instrumentation, partial and complete performance recovery.