Stepping motor servo driving method and driving mechanism
AssigneeKonica Minolta Photo Imaging, Inc.
InventorKazuhiro Shibatani
Life of this patent
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Abstract
A servo driving method of the present invention to drive a stepping motor driven by a predetermined driving pulse, by a servo control method, is comprising a setting step of setting a driving mode of the stepping motor switchable at least between a first driving mode, in which the stepping motor is driven with a relatively large current, and a second driving mode, in which the stepping motor is driven with a relatively small current, and a switching step of switching the driving mode between the first driving mode and the second driving mode when a predetermined mode switching information is given. Thereby, it becomes possible to reduce the power consumption by supplying power efficiently to the stepping motor.
Claims10
A servo driving method to drive a stepping motor driven by a predetermined driving pulse, by a servo control method, comprising:
- a setting step of setting a driving mode of the stepping motor switchable at least between a first driving mode, in which the stepping motor is driven with a relatively large current, and a second driving mode, in which the stepping motor is driven with a relatively small current, a switching step of switching the driving mode between the first driving mode and the second driving mode when a predetermined mode switching information is given.
A stepping motor servo driving mechanism, comprising:
- a stepping motor which is driven by a predetermined drive pulses in accordance with a servo control scheme;
- a driver which can at least drive the stepping motor by selectively switching between a first driving mode, in which the stepping motor is driven with a relatively large current, and a second driving mode, in which the stepping motor is driven with a relatively small current;
- a mode switching section which performs switching between the first driving mode and the second driving mode when a predetermined mode switching information is given;
- and
- a drive pulse generation control section which controls conditions for driving the drive pulses in accordance with the driving mode.
An imaging apparatus, comprising:
- an image shooting means for shooting an image of a subject;
- a camera shake correcting means for correcting of camera shake occurring when the image shooting means performs the image shooting operation;
- and
- a control target position calculating section for calculating a driving target position for the camera shake correcting means based on the amount of shake detected by a shake detecting means,
- wherein the camera shake correction means is comprising a stepping motor which is driven by a predetermined drive pulses in accordance with a servo control scheme;
- a driver which can at least drive the stepping motor by selectively switching between a first driving mode, in which the stepping motor is driven with a relatively large current, and a second driving mode, in which the stepping motor is driven with a relatively small current;
- and a mode switching section which performs switching between the first driving mode and the second driving mode when a predetermined mode switching information is given;
- and a drive pulse generation control section which controls conditions for driving the drive pulses in accordance with the driving mode.
Dependencies are inferred from the claim text.