Device having vibration wave motor as driving source
First Claim
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1. A device comprising:
- a vibration wave motor including a rotor and a stator and constituting a drive source that performs a predetermined operation;
a speed adjusting circuit which drives said vibration wave motor at a predetermined speed to perform the predetermined operation, said speed adjusting circuit also having a high speed mode for driving said vibration wave motor at a speed higher than the predetermined speed for performing the predetermined operation, the speed in said high speed mode being a speed selected for improving a condition of a frictional interface between the rotor and the stator of said vibrating wave motor; and
a high speed driving judging circuit which detects a use or operation state of the device or a rotating state of the vibration wave motor and allows driving of the vibration wave motor in the high speed mode when said high speed driving judging circuit determines that the use or operation state of the device or the rotating state of the vibration wave motor is a predetermined state.
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Abstract
A vibration wave motor having improved driving characteristics includes a mode for driving the vibration wave motor at a second speed set higher than a first speed which is a normal speed of the motor required in normal processing performed by driving the vibration wave motor. When a use state of a device having the vibration wave motor satisfies one or plural preset conditions, the vibration wave motor is driven at the second speed.
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Citations
25 Claims
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1. A device comprising:
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a vibration wave motor including a rotor and a stator and constituting a drive source that performs a predetermined operation;
a speed adjusting circuit which drives said vibration wave motor at a predetermined speed to perform the predetermined operation, said speed adjusting circuit also having a high speed mode for driving said vibration wave motor at a speed higher than the predetermined speed for performing the predetermined operation, the speed in said high speed mode being a speed selected for improving a condition of a frictional interface between the rotor and the stator of said vibrating wave motor; and
a high speed driving judging circuit which detects a use or operation state of the device or a rotating state of the vibration wave motor and allows driving of the vibration wave motor in the high speed mode when said high speed driving judging circuit determines that the use or operation state of the device or the rotating state of the vibration wave motor is a predetermined state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A device comprising:
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a vibration wave motor including a rotor and a stator and constituting a driving source for performing a predetermined operation;
a speed adjusting circuit which drives said vibration wave motor at a predetermined speed to perform the predetermined operation;
a driving circuit which drives said vibration wave motor in a predetermined manner so as to improve a condition of a frictional interface between said rotor and said stator of said vibration wave motor;
a judging circuit which detects a use or operation state of the device or a rotating state of the vibration wave motor, and determines whether the use or operation state of the device or the rotating state of the vibration wave motor conforms to one or plural predetermined conditions; and
a control circuit which allows an operation of said driving circuit when said judging circuit determines that the state detected conforms to said one or plural conditions. - View Dependent Claims (23, 24, 25)
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Specification