Electricity: motive power systems – Positional servo systems – With compensating features
Reexamination Certificate
2005-08-16
2005-08-16
Ip, Paul (Department: 2837)
Electricity: motive power systems
Positional servo systems
With compensating features
C318S556000, C417S044100, C417S045000, C417S044110, C417S053000, C062S006000, C062S228100, C062S156000
Reexamination Certificate
active
06930462
ABSTRACT:
In an apparatus and a method for controlling operation of a compressor, by removing deviation generated by resistance and inductance and removing an error in a stroke estimation value of a compressor, operation of the compressor can be accurately controlled. The apparatus includes a counter electromotive force detector for detecting a counter electromotive force generated at a motor of a compressor. A stroke calculator calculates a stroke estimation value of the compressor on the basis of the counter electromotive force, and a stroke controller controls a stroke of the compressor by varying a voltage applied to the motor on the basis of the calculated stroke estimation value and a stroke reference value.
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Lee Chel Woong
Lee Hyuk
Sung Ji Won
Yoo Jae Yoo
Greenblum & Bernstein P.L.C.
Ip Paul
LG Electronics Inc.
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