TY - JOUR
T1 - Generic nonsmooth H∞ Output synthesis
T2 - Application to a coal-fired boiler/turbine unit with actuator dead zone
AU - Ponce, Israel U.
AU - Bentsman, Joseph
AU - Orlov, Yury
AU - Aguilar, Luis T.
N1 - Publisher Copyright:
© 1993-2012 IEEE.
PY - 2015/11
Y1 - 2015/11
N2 - Actuator nonidealities, such as backlash, dead zone, and others, present in a number of industrial systems, are known to severely degrade system performance. Providing nonconservative closed-loop robust performance guarantees for these systems in a consistent manner has been an open problem. For example, in boiler/turbine units, the turbine valve position actuation for manipulating steam flow rate is characterized by a small mismatch between the turbine valve command and the actual valve position, producing a small steady-state regulation error in the plant outputs. The standard linear S\mathcal {H}-{\infty } controller designed to provide zero steady-state error regulation drives this error to zero, producing the undesirable oscillations in the control signals and the plant outputs. This paper develops a nonsmooth \mathcal {H}-{\infty } output regulator theory addressing this problem and applies this theory to the experimentally validated boiler/turbine model with actuator dead zone. The simulation results showing a considerable performance improvement are given.
AB - Actuator nonidealities, such as backlash, dead zone, and others, present in a number of industrial systems, are known to severely degrade system performance. Providing nonconservative closed-loop robust performance guarantees for these systems in a consistent manner has been an open problem. For example, in boiler/turbine units, the turbine valve position actuation for manipulating steam flow rate is characterized by a small mismatch between the turbine valve command and the actual valve position, producing a small steady-state regulation error in the plant outputs. The standard linear S\mathcal {H}-{\infty } controller designed to provide zero steady-state error regulation drives this error to zero, producing the undesirable oscillations in the control signals and the plant outputs. This paper develops a nonsmooth \mathcal {H}-{\infty } output regulator theory addressing this problem and applies this theory to the experimentally validated boiler/turbine model with actuator dead zone. The simulation results showing a considerable performance improvement are given.
KW - Actuators
KW - H∞ control
KW - boiler-turbine control
KW - dead zone
KW - nonsmooth nonlinearities
KW - robust performance.
UR - http://www.scopus.com/inward/record.url?scp=84961166221&partnerID=8YFLogxK
U2 - 10.1109/TCST.2015.2399672
DO - 10.1109/TCST.2015.2399672
M3 - Artículo
SN - 1063-6536
VL - 23
SP - 2117
EP - 2128
JO - IEEE Transactions on Control Systems Technology
JF - IEEE Transactions on Control Systems Technology
IS - 6
M1 - 7055314
ER -