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US 2003/0141836 A1Published application
Circuit to sample and compare the BEMF on an actuator into a constant velocity control
AssigneeTexas Instruments Incorporated
InventorJoao Carlos F. Brito
Life of this patent
Estimating the term…
Abstract
A apparatus for controlling an actuator including, an integrator circuit to generate an integrated signal to be represented by a back EMF voltage, a amount circuit to generate a amount signal to indicate the amount to raise or lower the integrated voltage, a direction circuit to generate a direction signal to raise or lower the back EMF voltage, a comparator circuit to compare said integrated voltage with the back EMF voltage, and a switch circuit to add and subtract the amount signal with the integrated voltage in accordance with the direction signal.
Claims6
A apparatus for controlling an actuator, comprising:
- an integrator circuit to generate an integrated signal to be represented by a back EMF voltage;
- a amount circuit to generate a amount signal to indicate the amount to raise or lower the integrated voltage;
- a direction circuit to generate a direction signal to raise or lower the back EMF voltage;
- a comparator circuit to compare said integrated voltage with said back EMF voltage;
- and
- a switch circuit to add and subtract said amount signal with said integrated voltage in accordance with said direction signal.
3 more elements
Dependencies are inferred from the claim text.