Abstract: A device for autonomously folding a deformable article includes a rotatable platform configured to receive the deformable article and at least one movable elongation in operable communication with at least one elongation drive. The at least one movable elongation is configured to raise and lower from the surface of the rotatable platform, move parallel to the surface, and manipulate the deformable article to thereby fold the deformable article at one of the one or more fold lines. The device includes a table drive configured to rotate the rotatable platform about a central axis such that the at least one elongation aligns with one of the one or more fold lines, and at least one sensor configured to detect the deformable article position and orientation on the rotatable platform. A controller is in operable communication with the at least one elongation drive, the table drive, and the at least one sensor.

Abstract: In association with a polyphase hybrid rectifying bridge having controlled rectifiers, there is employed, in addition to the normal means for controlling the firing time of the controlled rectifiers, additional circuitry for preventing or at least reducing the probability of the occurrence of a commutation fault. This is achieved by first producing a timing signal which is representative of the time intervals during which a voltage exists across a load being supplied by the bridge and by then combining the timing signal with a basic reference signal representing a minimum time period during which this voltage should exist to guard against a commutation failure of the controlled rectifiers. When a prescribed relationship exists between the timing signal and the basic reference signal, the normal control means is overridden and the firing angle of the controlled rectifiers is advanced to a point which will guarantee commutation.

Abstract: An adaptive filter circuit using a time modulated dead band for suppressing the effects of spurious noise associated with an error signal used in controlling a position drive motor associated with process controlling elements. The circuit includes means for restricting all signals, including both control signals and spurious noise, to a positioning motor during those periods of operation when little positioning is required. However, in those instances where a relatively large amount of repositioning is required, the system provides means for switching to a nonrestrictive mode of filtering which thereby permits maximum control over motor operation.