Signal averager for use with motor controller

Details Signal averager for use with motor controller Signal averager for use with motor controller

1995-03-20

1997-04-08

Martin, David S.

Electricity: motive power systems

Induction motor systems

Primary circuit control

318802, 324990, 324123C, H02P 318

Patent

active

056191146

ABSTRACT:
A method and apparatus used with a motor controller for determining the average value of a voltage signal including at least two analog integrators that integrate the voltage signal during consecutive and alternating integration periods, a selector receiving each integrated value after an integration period and determining an average voltage value therefrom, and a discharger that sets each integrated value equal to zero after the value has been sampled, the apparatus and method providing a series of changing average voltage values during motor operation.

REFERENCES:
patent: 3614633 (1971-10-01), Yalyshev et al.
patent: 3628129 (1971-12-01), Riley
patent: 3790707 (1974-02-01), Valenta
patent: 4075558 (1978-02-01), Harzer
patent: 4647905 (1987-03-01), Hantke et al.
patent: 4680695 (1987-07-01), Kerkman et al.
patent: 5138552 (1992-08-01), Weedon et al.
patent: 5440503 (1995-08-01), Maruyama

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