Abstract:
An image stabilization apparatus includes a fixed barrel, a movable barrel, a support member configured to movably support the movable barrel with respect to the fixed barrel, a drive unit configured to include a magnet and a coil, and drive the movable barrel, a control section configured to drive and control the drive unit, a position detection section configured to detect a position of the movable barrel, and a judgment section configured to detect, when the drive unit drives via the movable barrel so as to move to a predetermined target position, a deviation between the position of the movable barrel and the predetermined target position and judge whether or not the apparatus operates normally based on whether or not the deviation falls within a first allowable range.
Abstract:
An imaging apparatus includes an image stabilizing unit, a position signal processing unit, and a position signal processing control unit. The image stabilizing unit includes a movable portion, a motor, and a position detector. The position signal processing unit converts an analog signal output from the position detector into position information. The position signal processing control unit applies first settings or second settings to the position signal processing unit. The position signal processing control unit applies the second settings based on an output obtained when the position signal processing unit is applied with the first settings.
Abstract:
The invention provides a position detection apparatus comprising: a base part, a moving part movable relatively with respect to the base part, a position detection part that detects a position of the moving part relative to the base part on the basis of a magnetic flux change to produce position data, a temperature detection part that detects an ambient temperature, a position correction part that calculates a correction value on the basis of a difference between the position data and a given reference value and the ambient temperature, and corrects the position data on the basis of the calculated correction value to produce a first corrected position data, and a linearity correction part that corrects the first corrected position data on the basis of the correction value for nonlinearity of the position detection part to produce a second corrected position data, wherein: the position detection part is capable of detecting position value as far as a position area where, within a position range of relative movement of the moving part to the base part, the magnetic flux change in association with a change in an amount of the relative movement is nonlinear.
Abstract:
The invention disclosed herein provides a small-format image-shake correction apparatus and an imaging apparatus incorporating the same. The moving member control apparatus is comprising a base part 10, a moving part 30 that is movable relatively to the base part 10, a first driving part 71 that applies an driving force to the moving part 30, a second driving part 72 that applies an driving force to the moving part 30, a third driving part 73 that applies an driving force to the moving part 30 from a position different from the first 71 and the second driving part 72, a control part 2 that gains control of the driving forces of the first 71, the second 72 and the third driving part 73, and a correction part 3 that makes correction of a first output value Ix1 produced from the control part 2 to the first driving part 71 and a second output value Ix2 produced from the control part 2 to the second driving part 72, depending on a third output value Iy produced from the control part 2 to the third driving part 73, as shown in FIG. 12.
Abstract:
A drive device includes a noise signal calculation unit, a signal correction unit, and a drive controller. The noise signal calculation unit calculates a noise signal corresponding to a magnetic flux generated from a current flowing through a drive coil. The signal correction unit corrects a detection signal detected by a detector based on the noise signal. The drive controller controls a drive signal to be applied to the drive coil based on a corrected signal obtained by the signal correction unit. The noise signal calculation unit acquires an amplitude of a predetermined frequency band including a frequency of a high-frequency drive signal, and calculates the noise signal included in the detection signal based on the acquired amplitude.
Abstract:
A drive device includes a drive controller. The drive controller controls a drive signal on which a high-frequency drive signal is superimposed on a drive current to drive a movable frame and which is to be applied to a drive coil. The drive controller drives the movable frame to a predetermined position based on a detection signal detected by a detector and a high-frequency signal of a predetermined frequency band including a frequency of the high-frequency drive signal that is generated in a detection coil when the drive signal is applied to the drive coil.
Abstract:
The invention disclosed herein provides a small-format image-shake correction apparatus and an imaging apparatus incorporating the same. The moving member control apparatus is comprising a base part 10, a moving part 30 that is movable relatively to the base part 10, a first driving part 71 that applies an driving force to the moving part 30, a second driving part 72 that applies an driving force to the moving part 30, a third driving part 73 that applies an driving force to the moving part 30 from a position different from the first 71 and the second driving part 72, a control part 2 that gains control of the driving forces of the first 71, the second 72 and the third driving part 73, and a correction part 3 that makes correction of a first output value Ix1 produced from the control part 2 to the first driving part 71 and a second output value Ix2 produced from the control part 2 to the second driving part 72, depending on a third output value Iy produced from the control part 2 to the third driving part 73, as shown in FIG. 12.
Abstract:
The moving member control apparatus of the invention is characterized by comprising a base part 10, a moving part 30 capable of moving relatively with respect to the base part 10, a first driving portion 71 that applies driving force to the moving part 30, a second driving portion 72 that applies driving force to the moving part 30, a first instruction portion that gives an instruction to the first driving portion 71 about a displacement position or where to move, a second instruction portion that gives an instruction to the second driving portion 72 about a displacement position, a first position acquisition portion 34a that acquires a real position of the first driving portion 71, a second position acquisition portion 34b that acquires a real position of the second driving portion 72, a first deviation calculation portion that calculates a first deviation eX1 between a position rX1 instructed by the first instruction portion and a real position X1pos acquired by the first position acquisition portion 34a, a second deviation calculation portion that calculates a second deviation eX2 between a position instructed by the second instruction portion and a real position X2pos acquired by the second position acquisition portion 34b, a correction portion 2 that products a first correction signal rX1 and a second correction signal rX2 corrected for the first deviation and the second deviation, respectively, depending on a difference between the first deviation and the second deviation, and a control portion 3 that receives the first correction signal rX1 and the second correction signal rX2 to control driving the forces of the first driving portion and the second driving portion, respectively.
Abstract:
The invention provides a position control system comprising a moving portion that is movable, a position-detection portion that detects a position of the moving portion, a drive portion that applies driving force to the moving portion thereby moving the moving portion, a control portion that controls the driving force of the drive portion, and an input portion for inputting a drive target position for the moving portion, characterized in that the control portion is operable to determine the driving force to be applied to the drive portion based on a correction coefficient acquired based on a first deviation that is a difference between the drive target position inputted into the input portion and the reference position, and a second deviation that is a difference between a position detected by the position-detection portion and the drive target position inputted into said input portion.