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Building HVAC control systems - role of controls and optimization

• H. Sane, Christoph Haugstetter, S.A. Bortoff
• 2006 American Control Conference
• 2006

As building systems become more integrated, one inherently introduces coupling between previously independent designs. Model-based controls and analysis tools are keys to identify problems and… (More)

Nonlinear observer design for fuel processing reactors in fuel cell power systems

• Haulk Gorgun, Murat Arcak, Subbarao Varigonda, S.A. Bortoff
• Proceedings of the 2004 American Control…
• 2004

This work presents nonlinear observer designs for the catalytic partial oxidation (CPO) and the water gas shift (WGS) reactors in fuel cell power systems. The observers make use of available… (More)

H^{/spl infin/} control design for a stationary fuel cell power plant

• Subbarao Varigonda, Mayur Kamat, S.A. Bortoff
• 2006 American Control Conference
• 2006

Control of fuel cell power plants is very challenging due to the transient nature of the loads and the preference towards simpler, integrated system design necessitated by cost reduction. We study… (More)

Multivariable control design for the water gas shift reactor in a fuel processor

• Subbarao Varigonda, Jonas Eborn, S.A. Bortoff
• Proceedings of the 2004 American Control…
• 2004

The water gas shift (WGS) reactor is an essential component of the fuel processor in fuel cell power plants. The WGS reactor combines CO and H/sub 2/O in the reformate stream to produce H/sub 2/ and… (More)

Synthesis of Optimal Nonlinear Observers

• S.A. Bortoff, A. F. Lynch
• Proceedings of 1995 34th IEEE Conference on…
• 1995

After briefly reviewing the well�known necessary and sufficient existence conditions for a nonlinear observer with linear error dynamics (NOLED), we show how spline functions can be used to solve the… (More)

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