Dual direction integrator for constant velocity control for an actuator using sampled back EMF control
AssigneeTexas Instruments Incorporated
InventorJoao Felicio Brito
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Abstract
A controller providing increased control with lesser final error for an actuator when there is a force accelerating the actuator, such as at the end of travel during a retract operation. An extension of the integrator may be provided for implementing a second direction to integrate a final error. One embodiment of the invention may comprise a counter and an analog multiplexer controlling the attenuation of the command voltage.
Claims15
(canceled)
The controller as specified in claim 6 wherein the first position and the second position are end positions of the actuator travel.
A controller adapted to control an actuator, comprising:
- a first circuit adapted to drive the actuator between a first and second position;
- a second circuit adapted to determine when a force is being applied to the actuator during movement of the actuator between the first and second position;
- and
- a control circuit responsive to the second circuit adapted to control the first circuit to control the actuator upon determination that the force is being applied to the actuator.
- wherein the controller comprises a first counter and a second counter.
Dependencies are inferred from the claim text.