Synthesized passive feedback control of sensor-rich smart structures

Padma Akella; John T. Wen

doi:10.1117/12.208859

5 May 1995 Synthesized passive feedback control of sensor-rich smart structures

Padma Akella, John T. Wen

Proceedings Volume 2442, Smart Structures and Materials 1995: Mathematics and Control in Smart Structures; (1995) https://doi.org/10.1117/12.208859
Event: Smart Structures and Materials '95, 1995, San Diego, CA, United States

Abstract

The so-called smart structures frequently have more sensors than actuators, due to the lower cost and simpler instrumentation. The passivity based controller, which is frequently used in structural control due to its inherent robustness properties, requires sensor/actuator collocation; therefore, it can at best utilize only a subset of the sensors. This paper considers the design of a `squaring down' matrix which would render a system passive subject to some additional performance considerations. This problem is cast as a set of linear matrix inequalities (LMIs) which can be efficiently solved due to the recent advance in interior point methods in convex programming. We applied this procedure with the assumption that the sensors provide displacement as well as velocity information which is generally not true. We show that the proposed scheme can be implemented without the use of such velocity information. Simulation results involving a single flexible beam with torque input and hub position and strain gauge output are presented.

Citation Download Citation

Padma Akella and John T. Wen "Synthesized passive feedback control of sensor-rich smart structures", Proc. SPIE 2442, Smart Structures and Materials 1995: Mathematics and Control in Smart Structures, (5 May 1995); https://doi.org/10.1117/12.208859

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