Abstract: A Z-? table includes a bed capable of undergoing linear displacement along the Z-axis and angular positioning. The table includes two rotary motors arranged in a substantially concentric manner with two fixed stators. The interior rotor includes a device for guiding an intermediary piece along the Z-axis, and the exterior rotor includes a threaded portion that provides a nut associated with a threaded portion of an intermediary part arranged between the two rotors. The exterior rotor and the intermediary piece provide a ball-screw system. Each of the two rotors is associated with an angular displacement sensor for the precise determination of their angular positions.

Abstract: The structure provided with a plurality of substrates of the present invention is provided with a plurality of substrates each provided with chip-shaped circuit devices connected by poles also used as electrical wiring. At least one pole connecting the plurality of substrates is also used as one of the circuit devices. Simultaneously, the circuit devices also used as poles are mounted on each substrate in a standing posture.

Abstract: In some embodiments, a moving magnet type linear slider capable of minimizing the effect of microvibration at the time of driving a linear motor, easily increasing the servo gain and suppressing the speed ripple is provided. The moving magnet type linear slider includes a linear motor for reciprocating a table, and a detector for detecting the relative position of the table and a fixed base. The linear motor includes an armature in which polyphase armature winding is wound around the armature core secured to a fixed base and a field permanent magnet secured to the lower surface of the table in the vertical direction and arranged between the inner side surface of the linear guide and the outside surface of the armature via gaps therebetween. The detector includes a linear scale secured to the lower surface side of the table and a sensor head secured to the upper surface side of the armature, and the central axis of the detector is substantially aligned with the thrust central axis G-G of the armature.

Abstract: Wind turbine assembly, and related method, is provided that exploits an aerodynamically enhanced wind region of a building in proximity to a parapet of the building. A wind turbine assembly includes a support assembly configured to couple to a building in proximity to a parapet of the building and a rotor assembly coupled to the support assembly such that its rotor is oriented relative to the enhanced wind region to optimize electrical generation.

Abstract: A combination transducer and water-blocking film for acoustic signaling through ambient water. The water-blocking film has an etched fluoropolymer film and adjacent bonding film interposed between the transducer and the water. Potting material extends adjacent to and is bonded to both sides of the water-blocking film. The film and potting material create an acoustic window. The etched fluoropolymer film is approximately one to two thousandths inch thick and the bonding film is approximately one thousandths inch thick, and the potting material is a polyurethane matrix.

Abstract: An engine speed detector detects an engine speed of an engine having a baseline torque versus engine speed curve. A torque sensor detects an engine torque of the engine. A data processor determines if the detected engine speed is within a first speed range and if the detected engine torque is within a first torque range. A motor controller activates an electric motor to rotate substantially synchronously with a corresponding engine speed associated with the detected engine torque in an electric propulsion mode in accordance with a supplemental torque versus engine speed curve if the detected engine speed is within the first speed range and if the detected engine torque is within the first torque range. The supplemental torque versus engine speed curve intercepts the baseline torque versus engine speed curve at a lower speed point and a higher speed point.

Abstract: This invention discloses a vehicle electrical system voltage regulator with improved electrical protection and warning means that discerns and responds to regulator, generator, or vehicle electrical system operation and malfunctions. The regulator includes monitoring, control, and protection circuits with a phase signal monitor, a field switching circuit that operates the field coil in response to electrical power demands, and a field enable switch in series with the field regulating switch. The phase monitor and protection circuit ascertains and transmits generator rotational motion for use by the monitoring and control circuit in discerning the various operating conditions. The monitoring and control circuit operates on the field switching circuit to meet the electrical power demands and provide multi level fault protection to include field switching circuit reconfiguration to continue operating under various fault conditions.

Abstract: A surface acoustic wave device includes, a first substrate, a surface acoustic wave chip attached to the first substrate, and a second substrate that hermetically seals the surface acoustic wave chip. At least one of the first and second substrates includes. The first and second substrates have respective joining surfaces. An electric circuit is formed on a surface area of the first substrate other than the joining surfaces.

Abstract: A drive unit for performing precise linear movement of a driven object comprises a motor having a cylindrical stator and a cylindrical rotor that is coaxially put in the cylindrical stator and capable of rotating relatively to the cylindrical stator, a movable barrel for holding a driven object mounted for rotation in the cylindrical rotor, a motion transformation mechanism comprising an internal helical groove formed in the cylindrical rotor and an external helical thread formed on the movable barrel which engage with each other so as to cause relative rotation between the cylindrical rotor and the movable barrel when the cylindrical rotor rotates, thereby transforming rotational movement of the rotor into a linear movement of the movable barrel, and a head-on striking structure provided between the helical groove and the helical thread to restrict the relative rotation at an intended extreme end of an axial path of the movable barrel.

Abstract: A linear motor has a multi-phase coil to be energized. The linear motor includes a movable element, a stator, and a control system for controlling the position of the movable element. The control system is arranged to acquire drive information related to the linear motor going to be driven, and to position the stator on the basis of the drive information prior to the driving.

Abstract: A transducer assembly for the megasonic processing of an article and apparatus incorporating the same. The transducer assembly comprises a vibration transmitter having a portion configured to be positioned adjacent to and spaced from the surface of an article so that when fluid is applied to the surface of the article, a meniscus of the fluid forms between the surface of the article and the portion of the vibration transmitter. The transducer assembly also comprises a transducer coupled to the vibration transmitter, where the transducer can oscillate to propagate megasonic energy through the vibration transmitter and through the meniscus of the fluid. In one embodiment, the transducer is located within an enclosed space and at least one passageway is provided for flowing a gas in and/or out of the enclosed space. In an another embodiment, the portion of the vibration transmitter includes an elongated edge that is positioned close to and generally parallel to a surface of the article.

Abstract: A piezoelectric actuator is proposed, for example for actuating a mechanical component, and has a multilayered structure of piezoelectric layers with inner electrodes interspersed between them. The inner electrodes contact the outer electrodes on alternating sides and the regions between the outer electrodes are provided with a suitable insulation. The insulation is a layer comprised of a band, for example an adhesive tape, which covers over a predetermined region between the outer electrodes. The adhesive tape is comprised of a precisely measured, prefabricated material and can be stuck, rolled, melted, vulcanized, or sintered in place in a bubble-free manner.

Abstract: A wound field synchronous (WFS) dynamoelectric machine comprises: a rotor assembly; an exciter generator section comprising a stationary multiphase exciter stator winding for receiving excitation power from a multiphase alternating current (AC) source to generate an exciter stator magnetic field, a multiphase exciter rotor winding in the rotor assembly for generating multiphase AC excitation power as it cuts through the exciter stator magnetic field and a rotating rectifier assembly in the rotor assembly for converting the multiphase AC excitation power to direct current (DC) excitation power; a synchronous machine section comprising a DC main rotor winding in the rotor assembly for generating a main rotor magnetic field and a stationary multiphase main stator winding for receiving a multiphase AC control signal to generate a rotating main stator magnetic field that interacts with the main rotor magnetic field to rotate the rotor assembly; and an impedance that selectively connects one phase of the exciter st

Abstract: A method is disclosed for estimating engine power output for an engine in a hybrid electric vehicle powertrain that includes an electric motor and an electric generator. Selected powertrain variables, including electric motor torque and electric generator torque, are used in determining desired vehicle traction wheel torque and an estimated engine power. A calibrated delay in calculating estimated engine power following a time sampling of the values for motor torque and generator torque avoid inertial effects.

Abstract: A stopper member is included in a linear actuator comprising a stator assembly, a rotor assembly, an output shaft, and a stopper pin which is fixedly disposed at a frontward portion of the output shaft, and which is adapted to axially control the mode and amount of movement of the output shaft initiated by rotation of the rotor assembly. The stopper member is disposed fixedly with respect to the stator assembly and stops the axial movement of the output shaft without making it happen that the stopper pin which moves together with the output shaft touches the rotor assembly.

Abstract: A stator adapted for driving rotation of a rotor includes a stator body having a surrounding wall surface that surrounds a stator axis. A plurality of magnetic pole protrusions protrude radially from the surrounding wall surface relative to the stator axis, and a plurality of stator coils are respectively wound around the magnetic pole protrusions. A signal transmission unit is electrically coupled to the stator coils. Each of the magnetic pole protrusions has an outer periphery, and a recess formed inwardly from the outer periphery. Each of the stator coils has an inner conducting end that is accessible from the corresponding recess, thereby facilitating coupling of the inner conducting end to the signal transmission unit, and an outer conducting end electrically coupled to the signal transmission unit.

Abstract: A wind turbine generator system can regulate the rotational velocity of the wind turbine within an operation range even when the wind velocity suddenly changes and can perform continuous operation of the wind turbine. The wind turbine generator system includes a generator connected to the shaft of the wind turbine and a converter connected to the generator. When the rotational velocity of the wind turbine is within a predetermined range, power outputted from the generator is controlled so as to follow the instruction concerning the generator output given from the wind turbine to the converter. When the rotational velocity of the wind turbine is out of the predetermined range, the power outputted from the generator is controlled without following the instruction concerning generator output given from the wind turbine to the converter.

Abstract: Control procedure for a flow machine, wherein the flow machine comprises a turbine, which picks up power from a wind or water current, and a driveline, which transfers power from the turbine to an electric generator connected to an electricity grid of constant grid frequency. A power distribution transmission arranged on the input side of the driveline splits power to first and second power branches. A hydrodynamic convefler connects the first and second power branches on the output side of the driveline and the first power branch drives the electric generator with constant speed. The reaction member of the hydrodynamic converter is set to a constant position for a turbine speed below a chosen threshold and above the threshold the reaction member is controlled to maintain a medium speed of the turbine being a function of the momentum picked up by the turbine.

Abstract: An actuator is disclosed, which includes a piezoelectric bimorph. The actuator also includes a substantially moisture impervious and electrically insulating packaging having a cavity around the bimorph providing for a clearance around the bimorph. The packaging includes a carrier having first and second surfaces and an aperture wherein the bimorph is disposed, the packaging further includes first and second cover films selectively attached to the first and second surfaces respectively, and at least one flex circuit connected to the bimorph for supplying electrical energy thereto.

Abstract: The invention relates to a piezoelectric actuator (1) comprising a stack of a plurality of individual piezoelectric actuator elements (2, 2?, 2?) which are arranged between inner electrodes (3, 3?, 3?). Said piezoelectric actuator comprises a first metallisation strip (4) and a second metallisation strip (5), the inner electrodes (3, 3?, 3?) being respectively connected to the first or second metallisation strips (4, 5) in an alternating manner. A first outer electrode (6) and a second outer electrode (7) are fixed to the first or the second metallisation strips (4, 5) in order to electrically contact the piezoelectric actuator (1). Said outer electrodes (6, 7) respectively comprise a connection element (8, 9) for externally contacting the piezoelectric actuator (1), and at least one region which is embodied in such a way that it compensates length variations of the piezoelectric actuator (1) in the main oscillation direction (10) as a result of its design and arrangement.