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This graphical method, which was originally developed for the
stability analysis of feedback amplifiers, is especially suitable
for different control applications. With this method the
closed-loop stability analysis is based on the locus
of the open-loop frequency response
. Since only knowledge of
the frequency response
is necessary, it is a versatile
practical approach for the following cases:
- For many cases
can be determined
by series connection of elements whose parameters are known.
- Frequency responses of the loop elements determined by
can be considered directly.
- Systems with dead
time can be investigated.
- Using the
frequency response characteristic of
only the stability analysis, but also the
design of stable control systems can be easily performed.
Christian Schmid 2005-05-09