Abstract: A step motor integrates its mounting face and heat sink into the stator design. In particular, mounting holes (typically, four in number) are provided through the stator stack in outer perimeter areas. The stator stack itself becomes the mounting surface, allowing the heat generated from the stator to conduct directly to the mounting plate. The front end cap for holding the rotor in alignment is situated inside of the stator's mounting surface and takes no part in mounting the motor to the mounting surface. The end caps only hold the rotor in proper relation within the stator and contain the bearing assembly for the rotor's axial drive shaft. The perimeter of the stator assembly between the mounting screw holes may have saw-tooth cutouts that define heat-dissipation fins.

Abstract: A system and method of predicting motor failure based on relationships of motor pair characteristics, such as temperatures. One method includes receiving, by a controller, a parameter of a first motor on a mining machine from a first parameter sensor on a mining machine. The method also includes receiving, by the controller, a parameter of a second motor on the mining machine from a second parameter sensor on the mining machine. The method also includes outputting an alarm signal, by the controller, upon (1) determining that at least one of the parameters of the first motor and the second motor exceeds a parameter threshold and (2) determining that the parameter of the first motor differed from the parameter of the second motor by at least a difference threshold for a predetermined amount of time.

Abstract: One embodiment provides an electric rotary machine unit including: a first electric rotary machine having a first stator; and a second electric rotary machine having a second stator. A coil configured by plural coil segments is disposed in each of the first and second stators. The first and second stators are disposed so that connecting portions of the coil segments or joint portions of leg portions of the coil segments are positioned between the stator cores thereof. First and second feeding portions are interposed between the first and second stators in the axial direction and spaced apart from each other in the circumferential direction.

Abstract: A cable drawn from a lower arm of a robot into a first upper arm part of an upper arm is further drawn out to an exterior space of the robot through a first hole of a second upper arm part. The cable is drawn in contact with a sidewall part of the second upper arm part, and is disposed in a wrist arrangement portion through a second hole. A slack part is formed taking account of a length of the cable pulled by a wrist when the wrist pivots in the wrist arrangement portion, and the cable is drawn to a tool through a through hole of the wrist.

Abstract: A method is described for shutting off an internal combustion engine in a vehicle that comprises an internal combustion engine and an electrical machine, an electrical torque furnished by the electrical machine being adapted in such a way that a change per unit time in a total torque lies within a definable range, the total torque being made up at least of a torque of the internal combustion engine and the electrical torque.

Abstract: Provided is a rotor structure of a rotary electric machine, which is easily adaptable to offer a wide variety of products. The rotor structure of a rotary electric machine includes at least: a rotor shaft (3); a rotor core including a first rotor core section (15) and a second rotor core section (17); a boss section (9); and a pressurizing section. The second rotor core section and the boss section are arranged on an outer circumference of the rotor shaft. The first rotor core section is arranged on an outer circumference of the boss section. The pressurizing section is positioned on an axially outer side of the rotor core. The second rotor core section is pressurized by an abutment surface of the boss section. The first rotor core section arranged on the boss section is pressurized by the pressurizing section.

Abstract: An electrical machine and method for driving at least one ancillary device of a motor is provided wherein the electrical machine comprises a stator, configured to be rotated, and a rotor, rotatably mounted relative to the stator, coupled to the ancillary device. The speed of the rotor may be a function of the rotational speed of the stator and the frequency of a supply current supplied to the electrical machine and thus drives the ancillary device at a demanded load/speed.

Abstract: A linear actuator includes a housing, motors, actuator members, clutch members, a base, a clutch driver, and a pulling handle. The motors are disposed in the housing. The actuator members are respectively disposed in the housing and corresponding to a respective one of the motors. Each clutch member is connected between a respective one of the motors and a respective corresponding one of the actuator members. The base is disposed on an outer surface of the housing, a flange is disposed on an outer surface of the base, and a guiding slot is formed on the base. The clutch driver is in the base and connected to each of the clutch members. A cam contacting against the flange is formed on an end of the pulling handle, and a shaft is inserted through the end. The shaft is inserted through the guiding slot to connect the clutch driver.

Abstract: A foot-powered energy generation device includes a step plate that moves between an upper position and a lower position in response to the step action of a user. The device also includes an electrical generator, and a gear train that will cause a rotor of the generator to rotate in response to movement of the step plate up and down. A carriage is mechanically interconnected to the step plate and the gear train to cause the rotation of the gear train in response to the step plate motion.

Abstract: This rotor for a rotating electric motor includes a hollow cylindrical rotor core with a plurality of laminated electromagnetic steel plates. The inner and outer circumferential surfaces of the rotor core each face a magnetic gap. The rotor core is interposed between a first rotating support member and a second rotating support member. A flange is formed on a first end of a tubular pin protruding from a first hole of the first rotating support member. A tubular expansion part of the tubular pin plastically deforms due to fluid pressure so as to come into close contact with a through hole of the rotor core, the first hole of the first rotating support member, and a second hole of the second rotating support member.

Abstract: Embodiments herein relate to piece-part, sub-assembly, assembly, and component levels of a differential composed of a sun gear configuration and utilized in an integrated drive generator. An integrated drive generator is a hydro-mechanical transmission that drives a synchronous salient pole generator. The integrated drive generator is a constant speed output, variable speed input transmission that includes the differential and a hydraulic unit. In general, the integrated drive generator utilizes the variable speed input from an accessory gear box of an engine to drive or control a hydraulic unit, which in turn drives or controls a churn leg member of the differential. As the differential is driven, speeds of each speed member of the differential are then summed to generate the constant speed output to drive the synchronous salient pole generator.

Abstract: An integrated starter-generator (ISG) utilizes a dedicated, properly sized start box for the starting function, and a fully controllable hybrid homopolar machine with a generator control unit (GCU) for the generate function. The hybrid homopolar machine may comprise a permanent magnet (PM) section that is supplemented by a homopolar field section, which results in a regulated output voltage by either boosting or bucking the voltage out of the PM section vectorially through a common stator.

Abstract: A linear actuator for moving a load includes a tubular actuator housing, which has an end-side housing bottom and an end-side housing head, a rotatably drivable threaded spindle which is mounted rotatably in the housing bottom of the actuator housing and extends in an interior of the actuator housing from the housing bottom in a direction of the housing head, a piston which comprises a spindle nut, which is in engagement with the threaded spindle, and is guided longitudinally in the actuator housing, and a hollow actuator rod which is assembled with the piston, into which actuator rod the threaded spindle dips, and which actuator rod protrudes out of the actuator housing on the housing head. The linear actuator is configured such that the actuator housing is filled with pressurized oil and gas, the oil and gas being situated in a single volume.

Abstract: Methods and systems for measuring angular position include measuring an angular position within one rotation of a primary gear and a secondary gear that are meshed together. The primary gear and secondary gear have a first and second number of teeth respectively, where the first number of teeth and the second number of teeth are different. An angular position for the secondary gear is estimated using the measured primary gear angle and a reference value for each of the primary and secondary angle sensors. A number of primary gear rotations is calculated using the estimated angular position for the secondary gear and the measured angular position of the secondary gear. An angular position of the primary gear is calculated over multiple rotations using the calculated number of primary gear rotations, a reference value for the primary angle sensor, and the measured angle value of the primary gear within one rotation.

Abstract: A variable reluctance resolver has a stator combined with a housing. The resolver does not require extra space in a case for a device, into which the resolver is mounted, and it is easily coaxially mounted to the device. The resolver includes a ring-like stator 10, a rotor 20, and a housing 30. The stator 10 has a stator core 100, a first insulator 110, a second insulator 120, and coils 130. The stator core 100 is provided with plural salient poles 101. The first insulator 110 and the second insulator 120 hold the stator core 100 therebetween from both sides of the stator core 100. The coils 130 are wound to the salient poles 101 via the first insulator 110 and the second insulator 120. The housing 30 accommodates the stator 10. The first insulator 110 is coaxially integrally formed with the housing 30.

Abstract: A solar fan has a solar panel deposited inside a transparent protective plate that is positioned at a surface of a casing, so that solar energy can be converted into electricity that is then transmitted to a solar cell in the casing for storage. The solar fan has two blade sets that can be angularly adjusted with respect to a case of the casing.

Abstract: A linear actuator with a high holding force providing good irreversibility, has a high efficiency, low friction screw mechanism and a stepper motor with high magnetic detent torque but a low output torque ripple. The phase torque is modified to minimize the effect of the detent torque on the output. torque. Preferably, the motor has asymmetric phases to compensate for the detent torque.

Abstract: An electric machine, especially a transversal flux machine, the stator being composed of a stack of phase segments, each phase segment having at least one stator segment and one stator winding, especially a single winding, each stator segment having an annular stator bridge, on which pole shoes are premolded, which in particular extend radially inward, and/or which extend in the direction of the rotor and/or which are situated between the rotor and the annular stator bridge, the pole shoes having the same shape, in particular, the axial width of the pole shoe decreasing with increasing radial clearance, the associated profile being disposed between a first and a second profile, the first profile being a linear function of the radial clearance, the pole back associated with the first profile being a planar area, in particular, the second profile being a circular function, in particular a circular segment function, the pole back associated with the second profile being a cylindrical section area, in particular.

Abstract: A motor rotor assembly that includes multiple motor rotor sections and a rotor bar that extends through the motor rotor sections, such that the rotor bar and the motor rotor sections are configured such that the rotor sections are step-skewed, or continuously skewed, from each other. The assembly may be used in an IPM or Synchronous Reluctance motor; and, the motor rotor sections may be of solid core or laminations. Various assembly components, IPM and Synchronous Reluctance motors, and methods of construction/assembly are also disclosed. The present invention has been described in terms of specific embodiment(s), and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.

Abstract: A hand-moving mechanism moves a hand and includes a stepping motor and a wheel train mechanism. The stepping motor includes a plurality of coils and rotates a rotational shaft thereof in forward and reverse directions. The wheel train mechanism includes a plurality of gears having: one gear which is coupled to the rotational shaft of the stepping motor; and another gear which is coupled to the hand. The stepping motor includes two coil cores which are arranged in a vicinity of a peripheral edge portion in a module having a bent peripheral edge portion, which have a linear shape respectively and which extend from a central coupling portion respectively. Each of the two coil cores is formed to be bent at a predetermined angle following a bent shape of the peripheral edge portion of the module, so as to sandwich the central coupling portion between the two coil cores.

Abstract: The invention provides a subsea pressure boosting system feasible for operation at subsea step out lengths above 40 km and by control merely from a dry topside or onshore location. The system is distinctive in that it comprises: at least one subsea power step out cable, arranged from a near end at a dry location onshore or topsides to one or more subsea loads such as subsea pumps or subsea compressors at a far end, at the near end at least one source for electric power is connected and the cable is dimensioned for operation at a frequency different from the operation frequency of the connected subsea loads in order to handle the Ferranti effect and electric losses, and at least one passive electric frequency transformer, operatively connected between the subsea step out cable far end and the subsea loads, said transformer is located in a pressure vessel and transforms the operation frequency of the subsea step out cable to a frequency feasible for operation of the connected loads.

Abstract: The invention relates to a drive arrangement for an adjusting element of a motor vehicle, a clutch arrangement which is connected into the drive train with a drive connection and a driven connection, the clutch arrangement at any rate forwarding a movement which is introduced on the drive side to the driven connection and having a braking arrangement for braking a movement which is introduced on the output side. The braking arrangement has a braking element which can be adjusted counter to a braking force, in that, between the output connection and the braking element, the clutch arrangement has a freewheel arrangement comprising at least one freewheel pair of clamping body freewheels which operate in opposite directions, in that a movement which is introduced on the output side always brings about the blocking of at least one clamping body freewheel and is correspondingly braked via the braking arrangement.

Abstract: An ornithopter engine and method of generating an iterative flapping motion are disclosed. The engine includes a structural frame, having at least two swinging member mounting portions, a driving magnetic member shaft mounting portion and a driving magnetic members shaft. The driving magnetic members shaft is rotatable relatively to the structural frame. The engine includes at least two driving magnetic members, affixed to the driving magnetic member shaft and at least two swinging members, pivotally mounted onto the structural frame. The engine further includes at least one driven magnetic member, affixed to the swinging member and a motor coupled to the shaft.

Abstract: A instrumented housing for an electric motor actuator is provided. The instrumented housing may have a ribbon gage coupled to a housing of an electrical motor actuator. The ribbon gage may have one or more strain gages. The strain gages may measure the tension on the housing when the electric motor actuator exerts a load. A cover may extend over at least a portion of the housing and ribbon gage.

Abstract: A shutoff valve according to the present invention includes: a motor configured to cause a rotating shaft to rotate; a lead screw formed on the rotating shaft; a lead nut into which the lead screw is screwed; and a valve element configured to block a passage, the valve element being configured to move in an axial direction in accordance with rotation of the rotating shaft. A dry lubricating coating is formed on a contact surface where the lead screw and the lead nut come into contact with each other. A thread pitch of the lead screw is set such that a current applied to the motor, the current being in relation to an inductance of the motor, is in a range that does not cause explosion of the fuel gas and that allows thrust force necessary for moving the valve element to be obtained.

Abstract: An aircraft includes an electromechanical actuator and a decoupling device. A form-fit between a drive element and a linkage point outside of the actuator element can be reversibly decoupled and recoupled. The decoupling device allows the actuator element to run freely in the event of a malfunction, which effectively prevents a jam.

Abstract: An electric power generation system may be constructed of multiple similar generator modules arranged between a rotor and a stator. The rotor may be coupled to and/or integrated with a turbine that is configured to rotate in the presence of a fluid stream such as wind or water. Each generator module may have a rotor portion configured to generate a magnetic field having at least one characteristic that changes with respect to the rotational speed of the rotor. Each generator module may further have a stator portion configured to generate an alternating electric current responsive to the magnetic field. The generated electric current may be controlled by the stator portion of the generator module in order to magnetically control the rotational speed of the rotor and the turbine. Separation between the rotor and stator portions of the generator module may be magnetically maintained.

Abstract: Embodiments of the invention relate to an electricity generator system. The system comprises: a conductor; a magnet; and conversion means. The magnet is configured such that motion of the conductor relative to the magnet induces a current in the conductor and the induced current in the conductor causes motion of the magnet. The conversion means are configured to convert motion of the magnet to electricity.

Abstract: A method for producing an electrical insulation material includes the steps: providing a liquid-crystalline polymer; shaping the liquid-crystalline polymer to give an insulation film in such a manner that the mesophase of the liquid-crystalline polymer is present in the insulation film, whereby the molecules of the polymer are aligned in a preferred direction in the insulation film; laminating a plurality of insulation films to give a layer complex forming the electrical insulation material, wherein the layer complex has at least one insulation film which differs in the preferred direction of the molecules thereof from the preferred direction of the molecules of another insulation film.

Abstract: Provided is an outer rotor type motor capable of reducing workload for wiring and connecting coil leads without reducing a coil space factor while keeping the motor small. Coil leads extracted from same-phase coils of respective stator units pass between pole teeth of the stator units, and are respectively connected to inter-phase connection terminals at one end and then connected in series with each other, the stator units comprises a plurality of individual same-phase stator units which are stacked together, and the inter-phase connection terminals are protruded from a main terminal body. A drive signal input terminal and external input terminals, to which the other ends of coil leads extracted from the respective phase coils are respectively connected, and a drive signal input terminal and an external input terminal, to which the other ends of coil leads extracted from the respective phase coils are respectively connected, are respectively connected and wired inside the main terminal body.

Abstract: A window regulator motor assembly has an electric motor, a worm, a gear and a controller. The motor has an end face and an output shaft extending outwardly from the end face. The motor further includes a connector extending outwardly from the end face spaced from and generally parallel to the output shaft. The worm is on the output shaft and is driven by the motor. The gear is driven by the worm. The controller includes a circuit board positioned between the output shaft and the motor connector. A motor control connector extends from a first face of the circuit board and engages the motor connector. A speed sensor is on the second face of the circuit board and faces the output shaft.

Abstract: A magnetic propulsion drive system provides power output by including the use of permanent magnets repelled by electromagnets on adjacent rotor assemblies. In some embodiments, the electromagnets may be inactive until synchronized to face an opposing permanent magnet of the same polarity. The electromagnet may be energized thus causing a repellant force with the permanent magnet causing radial momentum in the rotor assembly to rotate a larger drive module of rotor assemblies. Embodiments may include two or more drive modules arranged to position opposing magnets of the same type so that each drive modules is driven producing and output torque through a drive shaft.

Abstract: An electric machine is provided. The electric machine includes at least one stator, a shaft, movable in rotation around an axis of rotation, two rotors, each being interdependent of the shaft, at least two bearings, able to support both rotors and the shaft. A single bearing is located between both rotors along the axis of rotation.

Abstract: A generator comprises a rotor assembly having a first rotor and a second rotor located about a shaft along a rotational axis. Each rotor includes a plurality of magnets circumferentially located about the rotational axis. The first rotor and the second rotor are separated by a gap, and adjacent magnets around each rotor and between the first rotor and the second rotor are aligned to have alternating polarity. The generator further comprises a stator assembly having a first stator and a second stator located about the shaft. The first stator inner surface is in close proximity to the first rotor outer surface and the second stator inner surface is in close proximity to the second rotor outer surface. Each stator includes a plurality of conductors circumferentially located about the shaft and proximal to the plurality of magnets of a corresponding rotor.

Abstract: An electric motor that can be used in driving a compressor and that incorporates a magnetic gear. The motor has high and low speed stators mounted within a motor casing side-by-side that drive coaxial low and high speed rotors also mounted within the motor casing for rotation and within the high and low speed stators. The high and low speed stators produce rotating magnetic fields that rotate in opposite directions to drive the rotors under application of a multiphase alternating current. The low speed rotor has a set of ferrous pieces, rotating with the low speed rotor and mounted thereon between the high speed rotor and the high speed stator. The ferrous pieces produce a magnetic gearing effect to drive the high speed rotor at a higher speed than the low speed rotor and in an opposite direction to the low speed rotor.

Abstract: A transversal flux machine having a stator and an external rotor disposed about the stator, the stator comprising two axial end faces, having an inner core of the stator, having a cooling path disposed radially within the inner core, wherein a cooling path either a) protrudes out of the transversal flux machine on the axial end face of the stator, said transversal flux machine facing away from an inlet side, or b) the cooling path protrudes out of the transversal flux machine on the axial end face of the stator, said transversal flux machine facing away from the inlet side, the cooling path running between the inlet and the outlet in an intermediate space between the stator and the external rotor of the stator facing the inlet side, the cooling path between the inlet and the outlet running in an intermediate space between the stator and the external rotor.

Abstract: An actuator includes a movable body including a cylindrical magnet having on a circumferential surface thereof alternating N and S pole faces along a circumferential direction thereof. An immovable body includes pole teeth arranged along the circumferential direction so as to face the circumferential surface of the magnet and that are equal in number to the N pole faces and the S pole faces, and a coil that receives an alternating current of a frequency substantially equal to a resonance frequency of the movable body to excite the pole teeth to have alternately different polarities in the circumferential direction. The movable body is held by the immovable body in a rotatable manner, and a neutral position for rotation of the movable body is a position at which center positions of the pole teeth in the circumferential direction and boundary positions between the pole faces of the magnet face each other.

Abstract: A permanently excited synchronous machine includes a stator; a winding system arranged in grooves of a laminated core of the stator and forming winding overhangs on end faces of the laminated core, and a rotor connected in fixed rotative engagement to the shaft and having ferrite magnets which extend axially beyond the end faces of the laminated core. The rotor electromagnetically interacts with the stator across an air gap there between during operation of the permanently excited synchronous machine to cause a rotation about an axis of rotation. A flux concentration element is provided radially across each of the ferrite magnets of a magnetic pole and bundles magnetic field lines of the ferrite magnet onto an axial length of the laminated core of the stator. The flux concentration elements and held by a fixing element on the ferrite magnets of a magnetic pole.

Abstract: Dual Halbach array element electric motor/generator with paired enhanced sides and substantially contiguous vertical and horizontal electromagnetic cores, comprised of a plurality of electromagnets arranged in Halbach array sequence, with horizontal cores equipped with fork-like prongs to provide substantial contiguity with vertical cores, assembled to serve as a circular or linear stator, rotor, or both, and a plurality of permanent magnets likewise arranged in a Halbach array sequence, assembled to serve as a circular or linear stator or rotor where required, with the enhanced sides of each Halbach array element, as rotor and stator, are paired together.

Abstract: A three-degrees-of-freedom MEMS electrostatic piston-tube actuator is disclosed. The actuator comprises two structures. A structure that comprises a plurality of fixed piston-like electrodes that are attached to a base, and form the stator of the actuator. A second structure that comprises a plurality of moving tube-like electrodes that are attached to the body of the upper structure and form the rotor of the actuator. The rotor is attached to the stator through a mechanical spring. The rotor of the actuator provides a 3-DOF motion, comprising vertical translation and bi-axial rotation about the axes of the structures. The present piston-tube actuator utilizes a configuration that enables the use of wide area electrodes, and therefore, provides a high output force enabling translation of the rotor or a high output torque enabling rotation of the rotor.

Abstract: Example embodiments may relate to a robotic system that includes a hydraulic actuator and an electric actuator both coupled to a joint of the robotic system. Operation of the actuators may be based on various factors such as based on desired joint parameters. For instance, such desired joint parameters may include a desired output torque/force of the joint, a desired output velocity of the joint, a desired acceleration of the joint, and/or a desired joint angle, among other possibilities. Given a model of power consumption as well as a model of the actuators, the robotic system may determine operating parameters such as hydraulic and electric operating parameters as well as power system parameters, among others. The robotic system may then control operation of the actuators, using the determined operating parameters, to obtain the desired joint parameters such that power dissipation in the system is minimized (i.e., maximizing actuation efficiency).

Abstract: Provided herein is a linear motor in which a back yoke can readily be mounted onto a plurality of linear motor units. The back yoke is constituted from a back yoke assembly including a surrounding portion that entirely surrounds six linear motor units. The back yoke works to form part of respective magnetic circuits of the six linear motor units. The back yoke assembly includes first and second divided assemblies and five partition wall portions. The first and second divided assemblies are each formed by press working a magnetic plate made of silicon steel.

Abstract: A linear actuator is provided with an outer tube and an inner tube inserted in the outer tube so as to be free to slide axially. A rod is erected at a central axis part of the inner tube, forming an annular space between the rod and the inner tube. Permanent magnets are retained along an axial direction in the rod, and a holder is fixed to the outer tube for retaining coils which are disposed face to face with the permanent magnets. The holder includes a cylindrical coil holding portion inserted in the annular space such that an extreme end of the cylindrical coil holding portion can move further into and backward from the annular space. The coil holding portion retains the coils within an inner peripheral surface, and a flange portion joined directly to a proximal end of the coil holding portion is fixed to the outer tube.

Abstract: A dc electrical machine with a large number of phases. The machine includes a rotor and a stator assembly. The rotor has Np rotating field poles. The stator has Ns winding slots, where Ns/Np is a non-integer ratio. A stator winding includes a plurality of coils received in the winding slots and defines a plurality of stator phases. A power electronic switching assembly includes first and second dc load terminals that can be connected to external equipment and a plurality of switching modules. Each switching module includes power electronic devices and is connected to a respective stator coil. A first proportion of the switching modules are connected together in series between the first and second dc load terminals and a second proportion of the switching modules are connected together in series between the first and second dc load terminals to define two parallel dc circuits.

Abstract: A liquid-cooled self-excited eddy current retarder having two salient poles is provided. The liquid-cooled self-excited eddy current retarder may comprise a retarder rotor, a retarder stator, a retarder coil, a retarder generator and a control module. The retarder rotor may be a jagged turntable, and an axial cross section of the jagged turntable may be in an inverted h shape. Each of the two salient poles may be located at a respective one of two axial ends of the jagged turntable. The retarder rotor may be connectable to a transmission shaft, and an inner circle of the retarder stator may be coaxial with an outer circle of the retarder rotor. The retarder coil may be an independent coil and disposed between the two salient poles of the retarder rotor. The retarder coil may be affixed to the retarder stator.

Abstract: A laminated body manufacturing apparatus for manufacturing an annular laminated body in which each layer is defined by a plurality of segments is provided with a feeding unit that sequentially feeds a plurality of parts to be processed on a band-like sheet material to a predetermined processing position; a processing unit that separates the segment from each part to be processed by a shearing processing in the processing position; and a laminating unit that receives the segment that is separated and lowered onto the plurality of segments that are lowered and defining one layer in advance and that rotates the received segment by a predetermined angle in a circumferential direction of the segment, each time when the shearing processing is performed, so as to place the sequentially lowered segment in a position to define the laminated body.

Abstract: Provided is an apparatus including electric power generators. The apparatus includes an electric motor that drives a power generator for generating power that is supplied to rotate another electric motor for driving a plurality of power generators.

Abstract: A method of producing a sensor unit for sensing the angular position of a rotatable element with respect to a fixed element, providing an encoder element fastened to the rotatable element, adapted to generate magnetic field variations as a function of its angular position, and a sensing element fastened to the fixed element, adapted to sense the magnetic field variations. The sensing element is mounted on and connected to a printed circuit board mounted in a shielding casing fastened with the fixed element. The method further comprises a step consisting in earthing the shielding casing by electrically connecting it to a load discharging device of the printed circuit board.

Abstract: A rotary moto actuator with a base 22, a table 21, a stator 25 and a rotor 26 of a rotary motor 31 and a first member 12 and a second member 14 of a guide mechanism 24 that have a plurality of base segments 22a, a plurality of table segments 21a, a plurality of stator segments 25a, a plurality of rotor segments 26a, a plurality of first member segments 12a and a plurality of second member segments 14, respectively, which all arranged circumferentially around a center line C. The stator segments 25a are connected to the base segments 22a, to which the first member segments 12a are connected. The rotor segments 26a are connected to the table segments 21a, to which the second member segments 14a are connected.

Abstract: An electrical machine 20, 48 comprises a first stator 22 and a second stator 24 spaced from the first stator 22, at least one of the first stator 22 and the second stator 24 including a guide arrangement 26, 50. The electrical machine 20, 48 also includes a plurality of rotor elements 30, 46 located between the first stator 22 and the second stator 24 and cooperating with the guide arrangement 26, 50 for movement relative to the first stator 22 and the second stator 24. Adjacent rotor elements 30, 46 cooperate with each other so that the rotor elements 30, 46 form a rotor and at least one of the rotor elements 30, 46 includes a coupling element 32 to transfer force to or from the rotor.