TY - GEN
T1 - Performance optimization over positive l∞ cones
AU - Naghnaeian, Mohammad
AU - Voulgaris, Petros G.
PY - 2014
Y1 - 2014
N2 - In this paper, we first consider the case where the input to a system is restricted to be in the positive cone of l∞, denoted by l ∞+, and seek to characterize the system's induced norm from l∞+ to l∞. We obtain an exact characterization of this norm which is particularly easy to calculate in the case of LTI systems. Furthermore, we consider the model matching problem to show that time-varying linear or nonlinear control or filtering does not improve the performance with respect to this norm for LTI systems. In the second part of the paper, we consider the case when the output is forced to be in the positive l∞ cone when the input is in this cone. We show if internal positivity is sought, a dynamic optimal controller offers no advantage over a static one.
AB - In this paper, we first consider the case where the input to a system is restricted to be in the positive cone of l∞, denoted by l ∞+, and seek to characterize the system's induced norm from l∞+ to l∞. We obtain an exact characterization of this norm which is particularly easy to calculate in the case of LTI systems. Furthermore, we consider the model matching problem to show that time-varying linear or nonlinear control or filtering does not improve the performance with respect to this norm for LTI systems. In the second part of the paper, we consider the case when the output is forced to be in the positive l∞ cone when the input is in this cone. We show if internal positivity is sought, a dynamic optimal controller offers no advantage over a static one.
KW - Linear systems
KW - Observers for linear systems
KW - Optimal control
UR - http://www.scopus.com/inward/record.url?scp=84905694020&partnerID=8YFLogxK
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U2 - 10.1109/ACC.2014.6859371
DO - 10.1109/ACC.2014.6859371
M3 - Conference contribution
AN - SCOPUS:84905694020
SN - 9781479932726
T3 - Proceedings of the American Control Conference
SP - 5645
EP - 5650
BT - 2014 American Control Conference, ACC 2014
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2014 American Control Conference, ACC 2014
Y2 - 4 June 2014 through 6 June 2014
ER -