Abstract: A bag making apparatus includes an intermittent feed device for feeding sheet panels, an adjustment device for detecting upper and lower thresholds for a length of the sheet panels included in a section from a first drive roller pair to a second drive roller pair, a movement device for moving a processing device and a sensor together as a movable group in the longitudinal direction of the sheet panels. The movement device moves the movable group upstream in response to the adjustment device detecting the upper threshold and moves the movable group downstream in response to the adjustment device detecting the lower threshold. If the movable group is moved, the intermittent feed device determines an intermittent feed distance based on a moving distance of the movable group in addition to output from the sensor and feeds the sheet panels by the determined distance using the first drive roller pair.

Abstract: The present invention provides a singularity locator that enables a singularity such as a fault to be located even in a near-end section. One embodiment of the present invention is a singularity locator (1) that locates a singularity by comparing a transmission wave with a reflected wave of the transmission wave reflected at the singularity at which impedance changes. The transmission wave is a frequency modulated continuous-wave (FMCW) with a continuously modulated frequency, and the singularity is located based on a difference in frequency between the transmission wave and the reflected wave.

Abstract: The present invention provides a singularity locator that enables a singularity such as a fault to be located even in a near-end section. One embodiment of the present invention is a singularity locator (1) that locates a singularity by comparing a transmission wave with a reflected wave of the transmission wave reflected at the singularity at which impedance changes. The transmission wave is a frequency modulated continuous-wave (FMCW) with a continuously modulated frequency, and the singularity is located based on a difference in frequency between the transmission wave and the reflected wave.