A driving device includes a driving motor, a first gear 3-1, and a gear 3-2 having a smaller diameter than the gear 3-1. Driving force from the driving motor is transmittable to a driven object when the gear 3-2 moves in an axial direction of a rotation shaft to be coupled to the gear 3-1. When the gear 3-2 moves in the axial direction to be decoupled from the gear 3-1, the driving force from the driving motor can be prevented from being transmitted to the driven object.

A driving device includes a driving motor, a first gear 3-1, and a gear 3-2 having a smaller diameter than the gear 3-1. Driving force from the driving motor is transmittable to a driven object when the gear 3-2 moves in an axial direction of a rotation shaft to be coupled to the gear 3-1. When the gear 3-2 moves in the axial direction to be decoupled from the gear 3-1, the driving force from the driving motor can be prevented from being transmitted to the driven object.

A rotating electric machine includes a rotor and a stator. The stator includes a stator core and a stator coil. The stator coil includes three first windings, three second windings and three switch units. The first windings are -connected to define three nodes therebetween. The second windings are arranged so as to be respectively connectable between the nodes and three phase terminals of the stator coil. The switch units respectively switch the connections between the nodes and the phase terminals between a direct connection state and an indirect connection state. In the direct connection state, the nodes are respectively directly connected with the phase terminals. In the indirect connection state, the nodes are respectively connected with the phase terminals via the second windings. The first and second windings are mounted on the stator core so that the first windings are located closer than the second windings to the rotor.

The invention provides an electrically operated valve which can more accurately detect a position of a valve body. An electrically operated valve is provided with a valve shaft, a valve body, a rotor member which is movable together with the valve shaft in a parallel direction to a first direction, a stator member which applies a turning force to the rotor member, a permanent magnet member which turns together with the rotor member, an angle sensor which detects an angle of rotation of the permanent magnet, and a guide member which guides a relative movement of the rotor member or the valve shaft in relation to the permanent magnet member. A distance between the permanent magnet and the angle sensor is fixed when the permanent magnet member turns.

A coil core including a coil block configured by a coil wound around the coil core which is coupled to a stator, a linear portion around which a wire is wound to form a coil; and coil-side couplers which are extended to both sides along a direction orthogonal to an extending direction of the linear portion, wherein the coil-side couplers include a thinner portion than the linear portion.

Provided are an electronic expansion valve, a control system, and a control method, including: a step motor and a Hall sensor; the step motor includes a rotor and a stator; the rotor includes a permanent magnet; the Hall sensor is provided on the outer periphery of the permanent magnet; the Hall sensor and rotor are arranged in the radial direction, and the stator and Hall sensor are arranged in the axial direction; the main-body part of the Hall sensor is used for sensing the magnetic pole change of said permanent magnet; such a structure reduces the effect that an operating environment has on the Hall sensor when detecting a signal.

An optoelectronic sensor comprising a light receiver, receiving optics in front of the light receiver, and a focus adjustment unit having an actuator and configured to move the light receiver, wherein the focus adjustment unit comprises a parallel guide having at least one flexible retaining element and moving the light receiver in a constant orientation on the optical axis of the receiving optics.

An optoelectronic sensor comprising a light receiver, receiving optics in front of the light receiver, and a focus adjustment unit having an actuator and configured to move the light receiver, wherein the focus adjustment unit comprises a parallel guide having at least one flexible retaining element and moving the light receiver in a constant orientation on the optical axis of the receiving optics.

The present invention relates to an aircraft with at least one synchronous reluctance machine which comprises a stator with a plurality of grooves and teeth and a rotor with a plurality of magnetic flux barriers, wherein at least one magnetic flux barrier is designed asymmetrical to the q-axis.

A battery powered device includes a battery and a motor controller that is coupled to the battery. A motor is operably coupled to the motor controller. The motor controller is configured to detect an amount of available power from the battery and engage the motor based on the amount of available power.