AG,
sorry if you understood my response to be questioning the value of PZ analysis. Let me state unequivocally that PZ analysis is a VERY a valuable systems analysis tool especially for feedback control systems.
Unfortunately LTspice does not support PZ analysis. It is a big failing, however, given the choice, I would much rather they simply not support a tool than support a misleading tool.
Old style spice PZ analysis was useful only in linear control systems, however in today's world of sampling the data right at the source, we really need PZ analysis that effectively works with system level Z-domains and S-domains descriptions. Ltspice is a useful Z-domain simulator BUT Matlab is much better so I do PZ analysis in Matlab (simulink).
regards
Robert
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--- In LTspice@..., Ganesan <dg1@...> wrote:
Boeing, Lockheed,Nothrop Grumman, IBM and Bell Lab's Capecod to name a
few... Control systems guys eat this for breakfast , lunch and
dinner...Large system identification programs like earthquake modelling,
economic forecasting are some other one that come int o mind.
Beyond that I will be getting into customer proprietary stuff and that
is not good for business...
Cheers
AG
