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Parker EME
Setting up Compax3
192-120103 N13 C3I20T11 / C3I32T11 December 2010
277
Linear Systems (LTI System)
Further explanations are based on the concept of so-called linear systems. This
means that doubling the input value means that the portion of the output value
influenced by it is also doubled. This, for instance, is not the case in the event of
influence due to limitations, friction and backlash.
=> those are called non-linear systems, which can not be analyzed with the
methods described here (or only with difficulties).
One of the most important properties of linear systems is that a sine signal, which
is put through a linear system, is still a sine signal at the output, which differs from
the input signal only in value and phase.
When a signal passes a LTI system, no new frequencies are generated.
Input and output signals of a linear system