Vibration damper and electronic device

A vibration damper comprising:

• a movable section movable in at least one direction;
• a support section to movably support the movable section;
• a vibration detector to detect a vibration received by the vibration damper;
• and
• a computing processor to compute an amount of displacement of the movable section in a first direction, which is associated with the vibration, based on a detection result of the vibration detector,
• calculate an amount of correction corresponding to the amount of displacement, and
• instruct the support section to move the movable section in a second direction opposite to the first direction based on the amount of correction,
• the vibration damper further comprising:
• a movement-amount detector to detect an amount of movement of the movable section moved by the support section;
• and
• a controller to perform a feedback control to reduce an amount of difference between the amount of correction computed by the computing processor and the amount of movement detected by the movement-amount detector,
• wherein the controller controls control information to be used in the feedback control, according to quantity of an electronic device to be mounted on the vibration damper,
• the vibration damper further comprising:
• a selector to select a calibration mode to determine whether to change the control information;
• and
• an output value acquisition section to acquire an output value from the support section having moved the movable section to a predetermined position in response to a selection of the calibration mode by the selector,
• wherein the controller calculates the quantity of the electronic device mounted on the vibration damper based on the output value acquired by the output value acquisition section, and determines whether to change the control information based on the quantity calculated by the controller,
• wherein the controller determines whether to change the control information depending on whether the quantity calculated by the controller is within a range of a reference quantity,
• wherein, when determining to change the control information and the quantity calculated by the controller exceeds the range of the reference quantity, the controller changes the control information to increase a gain of the feedback control, and
• wherein, when determining to change the control information and the quantity calculated by the controller falls below the range of the reference quantity, the controller changes the control information to reduce the gain of the feedback control.

A vibration damper comprising:

• a movable section movable in at least one direction;
• a support section to movably support the movable section;
• a vibration detector to detect a vibration received by the vibration damper;
• and
• a computing processor to compute an amount of displacement of the movable section in a first direction, which is associated with the vibration, based on a detection result of the vibration detector,
• calculate an amount of correction corresponding to the amount of displacement, and
• instruct the support section to move the movable section in a second direction opposite to the first direction based on the amount of correction,
• the vibration damper further comprising:
• a movement-amount detector to detect an amount of movement of the movable section moved by the support section;
• and
• a controller to perform a feedback control to reduce an amount of difference between the amount of correction computed by the computing processor and the amount of movement detected by the movement-amount detector,
• wherein the controller controls control information to be used in the feedback control, according to quantity of an electronic device to be mounted on the vibration damper,
• the vibration damper further comprising:
• a selector to select a calibration mode to determine whether to change the control information;
• and
• an output value acquisition section to acquire an output value from the support section having moved the movable section to a predetermined position in response to a selection of the calibration mode by the selector,
• wherein the controller calculates the quantity of the electronic device mounted on the vibration damper based on the output value acquired by the output value acquisition section, and determines whether to change the control information based on the quantity calculated by the controller,
• the vibration damper further comprising a notifier to notify that the controller fails to perform the feedback control when the output value acquired by the output value acquisition section reaches an upper limit of the output value.