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Signals and Systems by Smarajit Ghosh

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10

State Variable Methods (Discrete Case)

State variable methods for continuous time systems have already been introduced. In this chapter we are interested to discuss the following:

  1. to represent a given z–transfer function by state variable equation and output equation of the form

     

    image

     

  2. to get a relation between state equations, output equation and transfer function and
  3. finally the solution of state equation.

With the help of state equations we can calculate the next value of state variable from the given value of state variables and inputs.

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