Abstract
State-variable analysis has been developed entirely in terms of continuous systems, but the same principles and methods can be applied to discrete-time systems. In such systems, variables may change only at discrete intervals of time, the system being analogous to a difference equation. It may happen that portions of a system contain variables that change continuously, while other portions operate on a discrete basis. This situation arises when a continuous system such as a conventional servomechanism is operated by sampling a control signal, or when control information is obtained from a computer. Whatever the details of the system may be, the variables can be represented by a state vector, and the general methods developed previously can be used to investigate the system behaviour in terms of state-variable concepts similar to those for continuous systems.
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References
Freeman, H. F., Discrete Time Systems (Wiley, New York, 1965).
Jury, E. I., The Theory and Application of the z-transform Method (Wiley, New York, 1964).
Kuo, B. C., Discrete-data Control Systems (Prentice-Hall, Englewood Cliffs, N.J., 1970).
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© 1977 P. F. Blackman
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Blackman, P.F. (1977). Discrete-time Systems. In: Introduction to State-variable Analysis. Palgrave, London. https://doi.org/10.1007/978-1-349-01840-6_6
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DOI: https://doi.org/10.1007/978-1-349-01840-6_6
Publisher Name: Palgrave, London
Print ISBN: 978-1-349-01842-0
Online ISBN: 978-1-349-01840-6
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