Abstract: A driving apparatus, which adjusts a position of a member to be driven, includes a driving member connectable with the member to be driven and made of an elastic member, a female screw that penetrates the driving member, and a taper-shaped male screw configured to be screwed into the female screw. The driving member has a cutting portion that penetrates in an axis direction of the female screw so that an inner circumference of the female screw is discontinuous, and the driving member is configured to move in an axis direction of the male screw in a state where the male screw is screwed into the female screw to displace the member to be driven in a direction orthogonal to the axis direction of the male screw.

Abstract: The optical element position adjusting mechanism includes a holding member for holding an outer periphery of an optical element, a fixing portion for pivotally fixing the holding member to adjust the position of the optical element, a clamping portion capable of fixing or releasing the holding member against the fixing portion, a driving section for driving the holding member fixed to the fixing portion by the clamping portion in a pivot direction, and a flexure that is interposed between the clamping portion and the holding member and elastically deforms to guide the holding member driven by the driving section in the pivot direction about the clamping portion. The holding member positioned by the pivot is released from the fixing portion by the clamping portion to restore the flexure to the state prior to being elastically deformed, whereby it is again fixed to the fixing portion by the clamping portion.

Abstract: A control apparatus for a series-connected multi-level matrix converter includes each voltage commanding device provided for each of single-phase matrix converters to generate a voltage reference to each of the single-phase matrix converters. The series-connected multi-level matrix converter includes the single-phase matrix converters. Each of the single-phase matrix converters includes a snubber circuit and a DC voltage detecting section configured to detect a DC voltage of the snubber circuit to output a DC voltage detection value. ADC over-voltage detector is configured to output a DC over-voltage signal when the DC voltage detection value exceeds a set voltage value. A voltage modifying device is, when the DC over-voltage signal is outputted, configured to decrease the voltage reference to a corresponding single-phase matrix converter among the single-phase matrix converters based on a deviation between the DC voltage detection value and the set voltage value.

Abstract: A control apparatus for a series-connected multi-level matrix converter includes each voltage commanding device provided for each of single-phase matrix converters to generate a voltage reference to each of the single-phase matrix converters. The series-connected multi-level matrix converter includes the single-phase matrix converters. Each of the single-phase matrix converters includes a snubber circuit and a DC voltage detecting section configured to detect a DC voltage of the snubber circuit to output a DC voltage detection value. ADC over-voltage detector is configured to output a DC over-voltage signal when the DC voltage detection value exceeds a set voltage value. A voltage modifying device is, when the DC over-voltage signal is outputted, configured to decrease the voltage reference to a corresponding single-phase matrix converter among the single-phase matrix converters based on a deviation between the DC voltage detection value and the set voltage value.

Abstract: The optical element position adjusting mechanism includes a holding member for holding an outer periphery of an optical element, a fixing portion for pivotally fixing the holding member to adjust the position of the optical element, a clamping portion capable of fixing or releasing the holding member against the fixing portion, a driving section for driving the holding member fixed to the fixing portion by the clamping portion in a pivot direction, and a flexure that is interposed between the clamping portion and the holding member and elastically deforms to guide the holding member driven by the driving section in the pivot direction about the clamping portion. The holding member positioned by the pivot is released from the fixing portion by the clamping portion to restore the flexure to the state prior to being elastically deformed, whereby it is again fixed to the fixing portion by the clamping portion.

Abstract: A driving apparatus of the present invention is a driving apparatus which adjusts a position of a member to be driven. The driving apparatus comprises a driving member connected with the member to be driven and made of an elastic member, a female screw provided so as to penetrate the driving member, and a taper-shaped male screw configured to be screwed into the female screw. The driving member is provided with a cutting portion which penetrates in an axis direction of the female screw so that an inner circumference of the female screw is discontinuous, and the driving member is configured to move in an axis direction of the male screw in a state where the male screw is screwed into the female screw to displace the member to be driven in a direction orthogonal to the axis direction of the male screw.