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Article: Links between dynamic physical systems and operator theory issues concerning energy balances and stability.
- Article from:
- American Journal of Applied Sciences
- Article date:
- March 1, 2004
- Author:
CopyrightCOPYRIGHT 2004 Science Publications. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Abstract: This study relates properties of operators with the well-known concepts of positive realness and passivity properties in dynamic systems and their associate transfer functions. Those concepts together with very close related ones are first examined from a physical point of view. Then, they are related with hyperstability and properties of transfer functions while the hyperstability theorem is revisited and interpreted. Finally, the above concepts are compared to the mathematical concepts of positivity and closely related ones in operator theory in Hilbert spaces.
Key words. Positivity, Passivity, Popov'S Inequality, Positive Operators, Hyperstability
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