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New in Mathematica 9Enhanced Control Systems

Time-Delay Systems 

Time-delay systems can be specified in multiple ways and conveniently converted between state-space and transfer-function representations.

A time-delay system specified as an ODE.

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A system specified using state-space matrices and the SystemsModelDelay operator.

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A system specified as a transfer function.

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A transfer function with delays specified using SystemsModelDelay.

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A discrete-time system is determined with the SamplingPeriod option.

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Convert between state-space and transfer-function representations.

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Obtain the discrete-time approximations of continuous-time systems and vice versa.

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