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US 11,676,629 B1Granted
Sampled-data polydyne feedforward position control
AssigneeWestern Digital Technologies, Inc.
InventorTakehiko Eguchi
Life of this patent
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Abstract
In illustrative aspects, a system comprises an actuator; a control object, controlled by the actuator; and one or more processing devices. The one or more processing devices are configured to perform positioning control of the control object via the actuator, wherein performing the positioning control comprises: generating a feedforward polydyne positioning control input; and outputting the feedforward polydyne positioning control input to the actuator.
Claims20
A system comprising:
- an actuator;
- a control object, controlled by the actuator;
- and
- one or more processing devices, configured to perform positioning control of the control object via the actuator, wherein performing the positioning control comprises:
- generating a feedforward polydyne positioning control input configured to suppress at least one resonant mode;
- and
- outputting the feedforward polydyne positioning control input to the actuator.
4 more elements
A method comprising:
- generating, by one or more processing devices, a feedforward polydyne positioning control input configured to suppress at least one resonant mode;
- and
- outputting, by the one or more processing devices, the feedforward polydyne positioning control input to an actuator that controls a control object, thereby performing positioning control of the control object.
One or more processing devices comprising:
- means for generating a feedforward polydyne positioning control input, wherein the means for generating comprises means for generating at least a seventh-order polydyne to suppress at least one resonant mode;
- and
- means for outputting the feedforward polydyne positioning control input to an actuator that controls a control object, thereby performing positioning control of the control object.
Dependencies are inferred from the claim text.