A device for forming and applying accessory elements to a continuous band of absorbent material, includes a unit for feeding a continuous strip to a conveyor roller, a unit for cutting the strip in a continuous and alternating succession of first and second pieces, a first and a second roller rotating about respective axes parallel to the first direction, each including a movement device acting along a circumferential direction around the respective axis and configured for imparting to each unit a respective motion between positions for picking up and releasing the pieces. A unit for applying a pair of pieces to the band is equipped with a separating unit equipped with a spacer device for moving first and/or second carriages along a separating direction between close and far axial positions, wherein the spacer device includes a plurality of linear actuators each associated with a respective first carriage.

An example actuator control system includes a variable differential transformer (VDT) configured to measure displacement of a motor, and a motor controller configured to control the motor based on displacement data from the VDT. A circuit card assembly (CCA) interconnects the VDT to the motor controller. The CCA includes memory storing configuration data of the VDT, and the CCA is configured to provide the configuration data to the motor controller to calibrate the motor controller for use of the VDT. A method of configuring a motor controller is also disclosed.

A moving body includes: a plurality of linear motors including a first linear motor driven by magnetic interaction with magnetic flux of a magnetic pole path; a position detection sensor configured to detect a position of the moving body; a first electrical angle detection sensor disposed at a position different from the position detection sensor in a path direction of the magnetic pole path and configured to detect an electrical angle of the first linear motor; and a control unit configured to, when one of the position detection sensor and the first electrical angle detection sensor is positioned at a magnetic pole absent section, use the other of the position detection sensor and the first electrical angle detection sensor both to detect a position of the moving body and to detect an electrical angle of the first linear motor.

A control device (303) for controlling the feeding of electrical power to electromagnets (12) of an electric drive, in particular a linear motor stator (300), has a control device (303) comprising a first control component (306a) that is adapted to cause, in accordance with a drive desired value, the generation of first PWM control signals for controlling the energization of the electromagnets, and a second control component (306b) that is adapted to cause, in accordance with information to be transmitted, the generation of the first PWM control signals to be converted into a generation of other second PWM control signals.

A moving body includes: a plurality of linear motors including a first linear motor driven by magnetic interaction with magnetic flux of a magnetic pole path; a position detection sensor configured to detect a position of the moving body; a first electrical angle detection sensor disposed at a position different from the position detection sensor in a path direction of the magnetic pole path and configured to detect an electrical angle of the first linear motor; and a control unit configured to, when one of the position detection sensor and the first electrical angle detection sensor is positioned at a magnetic pole absent section, use the other of the position detection sensor and the first electrical angle detection sensor both to detect a position of the moving body and to detect an electrical angle of the first linear motor.

A Switched Reluctance Machine (SRM) assembly is provided. The assembly comprises a stator with a plurality of stator poles with a coil wounded on each stator pole. Each of the plurality of stator poles comprises a plurality of sub-poles integrally formed therewith, and the plurality of sub-poles provide the closest interface between the stator and the rotor. Further, two coils of an opposing pair of stator poles are energized during an excitation phase which is configured to create a flux path between each of the plurality of opposing sub-poles of the energized stator poles. The rotor of the assembly comprises a plurality of poles extending from a surface to provide the closest interface between the rotor and stator. Further, the plurality of stator sub-poles and the plurality of rotor poles are arranged to provide a commutation angle for the SRM assembly less than 15 degrees.

A camera module actuator includes, a magnet, a coil, a driver, and a position estimating processor. The coil is disposed to face the magnet. The driver is configured to move the magnet by applying a driving signal to the coil. The position estimating processor is configured to estimate a position of the magnet from an oscillating signal. A frequency of the oscillating signal varies according to a movement of the magnet.

In order to prevent the length of the movement path from being limited to the pitch of a magnet, a moving body (vehicle) includes two motors disposed in different positions in the moving direction. When one of the two motors is located in an irregular section in which the poles of magnets are not disposed regularly, a motor other than the one motor is located in a section which is not the irregular section.