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US 10,458,493 B2Granted
Control device and control method
AssigneeFujitsu Ten Limited
InventorsSumiaki Hashimoto, Natsuki Yokoyama
Life of this patent
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Abstract
A control device according to an embodiment includes a storage, a determining unit, and a driving unit. The storage stores therein information on a hysteresis area of an actuator. The determining unit determines, based on a control mode, a target current value according to the hysteresis area whose information is stored in the storage. The driving unit supplies a driving current according to the target current value determined by the determining unit to the actuator.
Claims6
A control device comprising:
- a storage configured to store information of a hysteresis area of an actuator, the hysteresis area being a performance region of the actuator within which a driving amount of the actuator is maintained at a predetermined target driving amount of the actuator and a driving current supplied to the actuator is changed;
- and
- a processor configured to:
- select a control mode from a plurality of control modes based on a state of an apparatus within which the actuator is disposed;
- determine a value of the driving current based on a target current value such that the driving amount of the actuator corresponds to the predetermined target driving amount;
- supply the determined driving current according to the target current value to the actuator based on the control mode while maintaining the driving amount of the actuator at the predetermined target driving amount;
- and
- upon determining that the driving amount of the actuator equals the predetermined target driving amount based on a detected driving amount detected by a sensor, determine the target current value based on the selected control mode and the driving amount of the actuator performing within the hysteresis area associated with the predetermined target driving amount.
5 more elements
A control method of controlling an actuator having a hysteresis area, the control method comprising:
- storing information of a hysteresis area of the actuator, the hysteresis area being a performance region of the actuator within which a driving amount of the actuator is maintained at a predetermined target driving amount of the actuator and a driving current supplied to the actuator is changed;
- selecting a control mode from among a plurality of control modes based on a state of an apparatus in which the actuator is disposed;
- determining a value of the driving current based on a target current value such that the driving amount of the actuator corresponds to the predetermined target driving amount;
- and
- supplying the determined driving current according to the target current value to the actuator based on the control mode while maintaining the driving amount of the actuator at the predetermined target driving amount, wherein:
- upon determining that the driving amount of the actuator equals the predetermined target driving amount based on a detected driving amount detected by a sensor, determining the target current value based on the selected control mode and the driving amount of the actuator performing within the hysteresis area associated with the predetermined target driving amount.
3 more elements
Dependencies are inferred from the claim text.