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Study of an adaptive anti-windup strategy for cross-directional control systems

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3 Author(s)
Rojas, O.J. ; Sch. of Electr. Eng. & Comput. Sci., Univ. of Newcastle, Callaghan, NSW, Australia ; Goodwin, G.C. ; Desbiens, A.

The cross-directional control problem of web forming processes subject to input constraints is investigated. We focus our discussion on the analysis of the properties of a previously proposed anti-windup strategy specially tailored for cross-directional control systems. The strategy first seeks disturbance compensation in those control directions associated with the largest gains, as determined by a spatial frequency decomposition of the system's interaction matrix. Simulation results show that the attained steady state performance is superior to that achieved by traditional MIMO anti-windup schemes and is close to an optimal QP solution to the problem. In addition, the strategy presents a robust stabilizing feature, in the sense that it automatically disengages control in those directions where uncertainty in the sign of the gain can otherwise lead to instability.

Published in:

Decision and Control, 2002, Proceedings of the 41st IEEE Conference on  (Volume:2 )

Date of Conference:

10-13 Dec. 2002