Electricity: motive power systems – Linear-movement motors
Reexamination Certificate
2005-10-04
2005-10-04
Schuberg, Darren (Department: 2834)
Electricity: motive power systems
Linear-movement motors
C310S012060
Reexamination Certificate
active
06952086
ABSTRACT:
A control system for a linear motor adapted to accurately supply a moving window of power to the stator coils. A plurality of individually switched stator coils run the length of a linear motor to move a rotor down the long axis of the stator. Accurate inductive-based position sensors continuously provide position data for the moving rotor. A processing unit calculates a proper time delay from a source voltage peak in order to apply power to the next stator coil in the moving direction of the rotor such that no DC offshoot/undershoot occurs. The linear motor control system optionally includes a failure prevention switching scheme in which pairs of individual stator coils on opposite sides of a double-sided stator are switched together.
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Brennen Michael Barnaby
Eichler Kenneth Martin
Hall David Jonathan
Krefta Mark Peter
Strickler Robert E.
Curtiss-Wright Electro-Mechanical Corporation
Jones Judson H.
Reed Smith LLP
Schuberg Darren
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