Phase-saving lowpass filters for drive control in...

Details Phase-saving lowpass filters for drive control in... Phase-saving lowpass filters for drive control in...

2005-09-06

2005-09-06

Nappi, Robert (Department: 2837)

Electricity: motive power systems

Positional servo systems

'reset' systems

C318S432000, C318S400260, C318S560000, C318S567000, C318S610000, C318S700000

Reexamination Certificate

active

06940247

ABSTRACT:
The PDT2filtering element (PDT2) and a Cauer filter (C2) are employed for use in control tasks of automation engineering, in particular for a filter connected downstream of a rotational speed controller. For tasks in control engineering, these have the advantage of a higher level of robustness, since a large frequency range is filtered, and a substantially smaller phase drop than conventional lowpass filters (PDT2). Consequently, by comparison with the known prior art a loss in dynamics is substantially minimized with these phase-saving lowpass filters, and an optimum is achieved in robustness and dynamics.

REFERENCES:
patent: 10056199 (2001-07-01), None

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