Electricity: motive power systems – Positional servo systems – With stabilizing features
Patent
1993-08-02
1995-09-19
Shoop, Jr., William M.
Electricity: motive power systems
Positional servo systems
With stabilizing features
318619, 364572, 364574, 455306, 327311, 327552, 327556, H03H 712
Patent
active
054518520
ABSTRACT:
A control system having a source of control signals and a multi-window electrical signal tracking filter. The signal tracking filter includes an operational amplifier operating in the non-inverting mode as a high impedance load, with a plurality of input stages cascaded at the input to the operational amplifier, each input stage having both a frequency determining filter portion and an amplitude determining threshold detecting portion. Each input stage defines a "window" of operation, such that the portion of a control signal or the like inputted to the filter which falls within the "window" will be filtered or attenuated thereby, while the portion of the control signal which falls outside of the "window" will pass unaffected through the filter. Cascading of the input stages allows one to customize the portions of the signal to be filtered for any particular application.
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Shoop Jr. William M.
Sircus Brian
Zegeer Jim
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