@conference {
	title = {A New Geometric Stability Margin for Feedback Systems},
	author = {Bennett, William H., Baras, John S.},
	year = {1985},
	month = {12/1985},
	abstract = {This paper provides a new geometric concept for a stability margin for feedback control systems which is applicable for any number of inputs and outputs. The measure of stability margin employed has the advantage over standard measures of exposing certain additional internal stability properties of a feedback configuration employing dynamic compensation.

The stability margin is based on the essential topological features of an abstract Nyquist criterion proposed by Brockett and Byrnes. This abstract Nyquist criterion for multivariable systems involves the topology of intersections between certain pairs of subspaces of the direct sum of the system inputs and outputs. The measures employed here are derived from the idea of principal angles between a pair of subspaces.},
	address = {Ft. Lauderdale, Florida},
	booktitle = {The 24th IEEE Conference on Decision and Control},
	pages = {pp. 519-526}
}
@conference {
	title = {Decomposition and Decentralized Control System Design: A Review of Frequency Domain Methods},
	author = {Bennett, William H., Baras, John S.},
	year = {1985},
	month = {12/1985},
	abstract = {We provide a short review of the literature on design of decentralized control based on weak coupling measures for transfer function models. The notion of diagonal dominance for transfer functions has been suggested as a measure of weak coupling for system decomposition. Various generalizations of this notion for partitioned transfer function matrices are discussed as they pertain to design of decentralized control.

Such weak coupling techniques permit a decentralized design procedure based on an approximate decoupled model. The accuracy of these decoupled approximations for control design is highlighted.},
	address = {Ft. Lauderdale, Florida},
	booktitle = {The 24th IEEE Conference on Decision and Control},
	pages = {pp. 1828-1835}
}
@conference {
	title = {An Impulse Control Problem for a Stochastic PDE Arising in Nonlinear Filtering},
	author = {Baras, John S., Bensoussan, Alain.},
	year = {1985},
	month = {12/1985},
	abstract = {We consider the nonlinear filtering problem of a vector diffusion process, when several noisy vector observations with possibly different dimension of their range space are available. At each time any number of these observations (or sensors) can be utilized in the signal processing performed by the nonlinear filter. The problem considered is the optimal selection of a schedule of these sensors from the available set, so as to optimally estimate a function of the state at the final time. Optimality is measured by a combined performance measure that allocates penalties for errors in estimation, switching between sensor schedules and for running a sensor. The solution is obtained in the form of a system of quasi-variational inequalities in the space of solutions of certain Zakai equations.},
	address = {Ft. Lauderdale, Florida},
	booktitle = {The 24th IEEE Conference on Decision and Control},
	pages = {pp. 1184-1187}
}
