Environmental Engineering Reference
In-Depth Information
Note that we have assumed symmetrical kernels in the above derivation.
The 2nd- and 3rd-order harmonic distortion,
denoted by
and
respectively, are computed from
If the system is nonlinear time-invariant, then (3.41) and (3.42) simplify
to the familiar expressions of
and
of nonlinear time-invariant
systems [45].
If the system is further nonlinear periodically time-varying, we have
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