Volume 11, no. 4Pages 123 - 135

Consistency and Lyapunov Stability of Linear Singular Time Delay Systems: a Geometric Approach

D.Lj. Debeljkovic, I.M. Buzurovic, G.V. Simeunovic
When we consider the control design of practical systems (chemical engineering systems, lossless transmission lines, large-scale electric network control, aircraft attitude control, flexible arm control of robots, etc.), time-delay often appears in many situations. Singular time delayed systems are the dynamic systems described by a mixture of algebraic and differential equations with retarded argument. This paper investigates the geometric description of initial conditions that generate smooth solutions to such problems and the construction of the Lyapunov stability theory to bound the rates of decay of such solutions. The new delay dependent conditions for asymptotic stability for the class of systems under consideration were derived. Moreover, the result is expressed in terms of only systems matrices that naturally occur in the model, therefore avoiding the need to introduce algebraic transformations into the statement of the main theorem.
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Keywords
singular time delayed systems; stability in the sense of Lyapunov; consistent initial conditions.
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