Moog Gmbh

California Linear Devices, Inc.

Pulse Engineering, Inc.

Koninklijke Philips Corporation N.v.

Pulse Gmbh

Toddco General

Electronic Research Group, Inc.

Paul Michael Lindberg

Philip G Hollingsworth

James Carl Ellard

Leonard N Wedman

Gary Schultze

Thomas W Todd

Conrad Lindberg

Norbert Daberko

David C Brewer

Duncan Rea Williams

A braking energy recovery system () for an electric motor () comprises first regulator (), energy storage device (), second regulator (), sensor (), and controller (). The first regulator () outputs a DC link voltage to the energy storage device (). The second regulator () couples to the energy storage device and outputs a motor drive signal to the electric motor (). The sensor () senses an operating characteristic of the electric motor. The controller () outputs to the first regulator an energy management signal () that comprises a time variant signal as a function of (i) motor speed and/or (ii) back EMF determined via the sensed characteristic, whereby the first regulator dynamically regulates the DC link voltage to maintain substantially constant an energy balance that comprises a sum of (a) rotational and/or linear kinetic energy of the electric motor and (b) energy stored in the energy storage device.

Braking energy recovery system for an electric motor and method

A method for making a magnetic linear motor shaft including thermal treatment to temporarily change the dimensions of various shaft components to allow tight interference fit assembly. The magnetic motor includes a core piece, annular magnets and pole pieces.

Method of assembling a shaft for a magnetic motor

An apparatus and method for identifying the position of a magnetic shaft are provided. N field sensors are adjacently positioned at fixed locations relative to the shaft's periodic field, corresponding to 180/N relative phase shifts. A table provides N&#x3e;2 predetermined signal models and a pre-identified position associated with each. An interpolator compares a representation of the N measured sensor signals to at least two predetermined models to generate a correction signal that provides another pre-identified position. The correction signal depends on N sensors for every position of the shaft. The correction signal is used to incrementally choose said another pre-identified position from the table as an approximate position of the shaft in an iterative process to find the minimum correction signal and identify the position.

Encoder signal analysis system for high-resolution position measurement

Magnetic motor component sleeves () for motor components with the sleeves () having various helpful magnetic characteristics, such as high magnetic permeability; magnetic saturation; residual (or remanent) magnetization; anisotropic magnetic properties. Method for making a magnetic linear motor shaft (), including thermal treatment to temporarily change the dimensions of various shaft components to allow tight assembly.

Bearing surface layer for magnetic motor

A stator assembly for a linear motor includes a plurality of interleaved modular pieces. Prewound coils and spacer pieces are alternately provided along the length of the stator. The spacer pieces have a generally trapezoidal cross section, complementary to a trapezoidal cross section of the prewound coils. Rims may be provided at an inner region of the spacer pieces. At the outer edge of the spacer pieces is provided a wall which mates with the identical wall on an adjacent spacer piece. The spacer piece may have radial slots cut entirely and/or partially through the piece in order to reduce the current and eddy currents induced when the prewound coils are energized.

Linear motor stator assembly piece

A stator assembly has a pair of end holes leading to a hollow region which has a larger diameter than the end holes. The assembly is manufactured around an elongated pole having a diameter equal to the end holes, which is surrounded by a temporary sleeve whose thickness fills the gap between the pole and the inner wall of the hollow region. The pieces of the assembly are placed onto the pole such that the sleeve lies within the hollow region, to thereby align them correctly with one another. After the pieces are secured to each other, the pole is removed, leaving the sleeve within the hollow region, and then the sleeve is removed. The sleeve may be flexible in order to expedite its removal from the hollow, and also may be of a magnetic material that is kept in place by magnetic forces generated by the stator assembly or by the pole.

Method of manufacturing a stacked stator assembly for a linear motor

A low profile transformer comprises a support member for supporting a coil winding, a first elongated conductive tape forming at least one conductor having lead terminals formed integral therewith formed into a first coil of multiple turns, a second elongated conductive tape having lead terminals formed integral therewith forming at least one conductor formed into a second coil of at least one turn interleaved with the first coil, and each terminal lead of each of the tapes extending from the support member and having a portion disposed at a base of the transformer for engagement and surface bonding to a PC board.

Low profile high power surface mount transformer

A panel of a plurality of circuits to be separated into individual circuits, comprises a panel of conductive foil and insulator laminate formed into a plurality of separate circuits, a shear trace disposed between adjacent circuits, and a pull tab at one end of each of said the shear traces. In the depanelizing operation, the shear traces are pulled for cutting through the insulator to remove the corresponding circuits from the panel.

Method for depanelizing electrical circuitry

An apparatus which provides selectively either constant power, constant current or constant voltage to the heating elements of the thermods. The soldering system power supply apparatus includes devices for monitoring and controlling individual temperature profiles of each soldering thermod heating element. A computerized arrangement controls the power to each thermod in a very accurate manner. For the purpose of adjusting the power to each thermod element as a function of its temperature and the desired temperature profile, a set of temperature sensors are coupled to each of the thermod elements for measuring its temperature. Similarly, a set of energy sensors are also coupled to each of the thermod elements for detecting the amount of electrical energy supplied to each thermod.

Soldering system controlled power supply apparatus and method of using

A method and apparatus for providing uninterrupted DC and AC power for a desktop personal computer is described. The source of the uninterrrupted DC and AC power is derived from an integrated power supply that is sized to fit within the existing housings of most desktop personal computers as a plug-in replacement for existing power supplies. A high degree of efficiency is obtained using an integrated design with the main power conversion derived from a DC/DC dual primary resonant converter. The main primary of the resonant converter is driven from a high voltage DC bus which is supplied from AC mains when available. When the AC mains is unavailable, the second primary of the DC/DC dual primary resonant converter receives power from a low voltage battery source. Secondaries of the converter produce low voltage DC for driving the personal computer, high voltage DC for augmenting the high voltage DC bus, which in turn is used to drive a DC/AC inverter for supplying uninterrupted AC voltage for powering peripherals such as a monitor, printer, etc. A medium-voltage secondary is also sourced from the converter which drives a battery charger to recharge an internal battery pafck upon restoration of the AC mains.

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San Diego, CA, United States of America

Paul Michael Lindberg