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:
- to represent a given z–transfer function by state variable equation and output equation of the form
- to get a relation between state equations, output equation and transfer function and
- 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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