Patents by Inventor John Michael Miller

John Michael Miller has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20040258350
    Abstract: A micro-electro-mechanical (MEMs) mirror device for use in an optical switch is disclosed. A “piano”-style MEMs device includes an elongated platform pivotally mounted proximate the middle thereof by a torsional hinge. The middle portion of the platform and the torsional hinge have a combined width less than the width of the rest of the platform, whereby several of these “piano” MEMs devices can be positioned adjacent each other pivotally mounted about the same axis with only a relatively small air gap therebetween. In a preferred embodiment of the present invention specially designed for wavelength switching applications, a greater range of arcuate motion for a mirror mounted thereon is provided by enabling the platform to rotate about two perpendicular axes.
    Type: Application
    Filed: May 21, 2004
    Publication date: December 23, 2004
    Inventors: John Michael Miller, Yuan Ma, Barrie Keyworth, Wenlin Jin, David R. Hess
  • Publication number: 20040189223
    Abstract: A strategy to control and diagnose the operation of an electric motor using a sensorless control system augmented by feedback from a position and speed sensor is disclosed. The strategy can improve the robustness of operation and diagnose potential faults in electric motors. The present invention includes a method for diagnosing operation of an electric motor and a method and system for controlling an electric motor. In the diagnostic method, a sensorless system and a sensor based system are checked against each other to determine if either of the systems is faulted. In the control method, the sensor based control system is used when the motor speed is below a predetermined threshold and the sensorless system is used when the motor speed is above the predetermined threshold. The position sensor can be a low resolution position sensor, an engine crankshaft sensor, an engine camshaft sensor, or a transmission sensor.
    Type: Application
    Filed: April 14, 2004
    Publication date: September 30, 2004
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Franco Leonardi, Henry Heping Huang, John Michael Miller, Michael W. Degner
  • Patent number: 6795291
    Abstract: An electromechanical valve assembly (46) for an internal combustion engine (36) is provided. The valve assembly (46) includes a rotor (68) centered about a first axis (122) having a bore (114) extending generally axially therethrough. The valve assembly (46) further includes a stator (66) operatively disposed about the rotor (68) for producing a torque to cause rotation of the rotor (68) about the axis (122). Finally, the valve assembly (46) includes a valve (70) having a valve stem (126) and a valve head (84). The valve stem (126) extends generally axially through the bore (114) of the rotor (68). The valve stem (126) is also configured to move generally axially responsive to the rotation of the rotor (68) to selectively engage and disengage the valve head (84) with a valve seat (124) of the engine (36).
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: September 21, 2004
    Assignee: Ford Global Technologies, LLC
    Inventor: John Michael Miller
  • Patent number: 6750626
    Abstract: A strategy to control and diagnose the operation of an electric motor using a sensorless control system augmented by feedback from a position and speed sensor is disclosed. The strategy can improve the robustness of operation and diagnose potential faults in electric motors. The present invention includes a method for diagnosing operation of an electric motor and a method and system for controlling an electric motor. In the diagnostic method, a sensorless system and a sensor based system are checked against each other to determine if either of the systems is faulted. In the control method, the sensor based control system is used when the motor speed is below a predetermined threshold and the sensorless system is used when the motor speed is above the predetermined threshold. The position sensor can be a low resolution position sensor, an engine crankshaft sensor, an engine camshaft sensor, or a transmission sensor.
    Type: Grant
    Filed: September 11, 2002
    Date of Patent: June 15, 2004
    Assignee: Ford Global Technologies, LLC
    Inventors: Franco Leonardi, Henry Heping Huang, John Michael Miller, Michael W. Degner
  • Patent number: 6711556
    Abstract: A method is provided for optimizing a rotating induction machine system fuzzy logic controller. The fuzzy logic controller has at least one input and at least one output. Each input accepts a machine system operating parameter. Each output produces at least one machine system control parameter. The fuzzy logic controller generates each output based on at least one input and on fuzzy logic decision parameters. Optimization begins by obtaining a set of data relating each control parameter to at least one operating parameter for each machine operating region. A model is constructed for each machine operating region based on the machine operating region data obtained. The fuzzy logic controller is simulated with at least one created model in a feedback loop from a fuzzy logic output to a fuzzy logic input. Fuzzy logic decision parameters are optimized based on the simulation.
    Type: Grant
    Filed: September 25, 2000
    Date of Patent: March 23, 2004
    Assignee: Ford Global Technologies, LLC
    Inventors: Raymond B Sepe, Jr., John Michael Miller
  • Patent number: 6707279
    Abstract: A method of controlling an induction generator such as an automotive starter-alternator or a windmill is disclosed. The method comprises using a minimal number of current sensors and controlling at least one of a machine flux, an output voltage and generator torque, based on the stator or rotor flux magnitude and position. This method comprises measuring a plurality of current amounts; transforming them into a two phase reference system; measuring a DC voltage; measuring voltage amounts in the generator; transforming the plurality of voltage amounts into the two phase reference system; calculating a flux in the generator; comparing the calculated flux magnitude with a desired flux; determining a d-axis voltage; determining a desired torque amount; comparing the desired torque amount with an estimated torque amount; determining a q-axis voltage; and transforming the d-axis voltage and the q-axis voltage to stationary reference frame n-phase voltages using the position of the flux.
    Type: Grant
    Filed: January 26, 2001
    Date of Patent: March 16, 2004
    Assignee: Ford Global Technologies, Inc.
    Inventors: Victor R. Stefanovic, John Michael Miller
  • Publication number: 20040046519
    Abstract: A strategy to control and diagnose the operation of an electric motor using a sensorless control system augmented by feedback from a position and speed sensor is disclosed. The strategy can improve the robustness of operation and diagnose potential faults in electric motors. The present invention includes a method for diagnosing operation of an electric motor and a method and system for controlling an electric motor. In the diagnostic method, a sensorless system and a sensor based system are checked against each other to determine if either of the systems is faulted. In the control method, the sensor based control system is used when the motor speed is below a predetermined threshold and the sensorless system is used when the motor speed is above the predetermined threshold. The position sensor can be a low resolution position sensor, an engine crankshaft sensor, an engine camshaft sensor, or a transmission sensor.
    Type: Application
    Filed: September 11, 2002
    Publication date: March 11, 2004
    Applicant: Ford Global Technologies, Inc.
    Inventors: Franco Leonardi, Henry Heping Huang, John Michael Miller, Michael W. Degner
  • Publication number: 20030223679
    Abstract: A micro-electro-mechanical (MEMs) mirror device for use in an optical switch is disclosed. A “piano”-style MEMs device includes an elongated platform pivotally mounted proximate the middle thereof by a torsional hinge. The middle portion of the platform and the torsional hinge have a combined width less than the width of the rest of the platform, whereby several of these “piano” MEMs devices can be positioned adjacent each other pivotally mounted about the same axis with only a relatively small air gap therebetween. In a preferred embodiment of the present invention specially designed for wavelength switching applications, a greater range of arcuate motion for a mirror mounted thereon is provided by enabling the platform to rotate about two perpendicular axes.
    Type: Application
    Filed: May 27, 2003
    Publication date: December 4, 2003
    Inventors: Mohiuddin Mala, John Michael Miller, Graham McKinnon, Yuan Ma
  • Patent number: 6651566
    Abstract: A transportation system includes a guideway lane and a power cable assembly extending along the guideway lane. The system further includes a vehicle configured to travel on the guideway lane. The vehicle includes a self-centering transformer that is movable along the cable assembly and configured to cooperate with the cable assembly to transfer power to the vehicle. In addition, the transformer includes a magnet array that creates a magnetic field for centering the transformer-with respect to the cable assembly as the transformer moves along the cable assembly.
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: November 25, 2003
    Assignee: Ford Motor Company
    Inventors: Craig Hammann Stephan, John Michael Miller, Lloyd Craig Davis, Richard David Anderson
  • Patent number: 6637343
    Abstract: A guideway system for conveying vehicles includes a first guideway lane and a plurality of control cells. Each cell includes a particular portion of the first guideway lane and a cell:controller for monitoring and controlling traffic flow on the first guideway lane portion within the respective cell. Furthermore, the cell controllers are in communication with each other so as to share information with each other.
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: October 28, 2003
    Assignee: Ford Motor Company
    Inventors: Craig Hammann Stephan, John Michael Miller, Lloyd Craig Davis, Richard David Anderson
  • Publication number: 20030173173
    Abstract: A transportation system includes a guideway lane and a power cable assembly extending along the guideway lane. The system further includes a vehicle configured to travel on the guideway lane. The vehicle includes a self-centering transformer that is movable along the cable assembly and configured to cooperate with the cable assembly to transfer power to the vehicle. In addition, the transformer includes a magnet array that creates a magnetic field for centering the transformer with respect to the cable assembly as the transformer moves along the cable assembly.
    Type: Application
    Filed: March 13, 2002
    Publication date: September 18, 2003
    Applicant: Ford Motor Company
    Inventors: Craig Hammann Stephan, John Michael Miller, Lloyd Craig Davis, Richard David Anderson
  • Publication number: 20030173172
    Abstract: A method is provided for controlling operation of a vehicle on a guideway system, wherein the vehicle includes a first element of a linear induction motor and an alternate power source, and the guideway system has an acceleration section including a second element of the linear induction motor, and a computer control system. The method includes utilizing the second element in cooperation with the first element so as to accelerate the vehicle on the acceleration section of the guideway system, and providing speed instructions to the vehicle using the computer control system so as to cause the vehicle to use the alternate power source to maintain a desired cruising speed on a main section of the guideway system.
    Type: Application
    Filed: March 13, 2002
    Publication date: September 18, 2003
    Applicant: Ford Motor Company
    Inventors: Craig Hammann Stephan, John Michael Miller, Lloyd Craig Davis, Richard David Anderson
  • Publication number: 20030173174
    Abstract: A guideway system for conveying vehicles includes a first guideway lane and a plurality of control cells. Each cell includes a particular portion of the first guideway lane and a cell controller for monitoring and controlling traffic flow on the first guideway lane portion within the respective cell. Furthermore, the cell controllers are in communication with each other so as to share information with each other.
    Type: Application
    Filed: March 13, 2002
    Publication date: September 18, 2003
    Applicant: Ford Motor Company
    Inventors: Craig Hammann Stephan, John Michael Miller, Lloyd Craig Davis, Richard David Anderson
  • Patent number: 6619212
    Abstract: A method is provided for controlling operation of a vehicle on a guideway system, wherein the vehicle includes a first element of a linear induction motor and an alternate power source, and the guideway system has an acceleration section including a second element of the linear induction motor, and a computer control system. The method includes utilizing the second element in cooperation with the first element so as to accelerate the vehicle on the acceleration section of the guideway system, and providing speed instructions to the vehicle using the computer control system so as to cause the vehicle to use the alternate power source to maintain a desired cruising speed on a main section of the guideway system.
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: September 16, 2003
    Assignee: Ford Motor Company
    Inventors: Craig Hammann Stephan, John Michael Miller, Lloyd Craig Davis, Richard David Anderson
  • Patent number: 6590387
    Abstract: A magneto-strictive sensor 82 for determining a position of a valve 70 and/or a rotor 68 of an electromechanical valve assembly 46 is provided. In particular, the magneto-strictive sensor 82 is utilized to determine a rotational position of the rotor 68 and/or an axial position of the valve 70. The sensor 82 includes a sonic conduit 144 extending around a portion of a circumference of the rotor 68 of the valve assembly 46. The sensor 82 further includes a sonic wave generator 150 generating a sonic wave in the conduit 144 responsive to a transmit signal. The sonic wave propagates to a localized stress boundary 156 in the conduit 144 which is induced by a sensor magnet 80 rotating with the rotor 68. The sonic wave is reflected in the conduit 144 from the stress boundary 156. The sensor 82 further includes a sonic wave receiver 152 receiving the reflected sonic wave from the conduit 144 and generating a received signal responsive to the sonic wave.
    Type: Grant
    Filed: December 1, 2000
    Date of Patent: July 8, 2003
    Assignee: Ford Global Technologies L.L.C.
    Inventor: John Michael Miller
  • Patent number: 6548931
    Abstract: A rotor 33, 133 for use in an electrical machine 100 having permanent magnets 34, 134 included therein, each permanent magnet 34, 134 between an adjacent pair of poles 32, 132, wherein each adjacent pole 32, 132 has an opposite polarity. Each permanent magnet 34, 134 has a magnetization polarity on its radially-outward surface 38, 138, and each adjacent permanent magnet 34, 134 has the opposite polarity on its radially-outward surface 38, 138. In addition, each pair of permanent magnets 34, 134 have the same magnetic polarity on their adjacently facing surfaces. This arrangement of permanent magnets 34, 134 may be used on electrical machines 100 having either a Lundell-type rotor 33 or salient pole rotor 133. The arrangement of permanent magnets 34, 134 increases the output power and efficiency of the electrical machine 100 while decreasing magnetic noise.
    Type: Grant
    Filed: November 26, 2001
    Date of Patent: April 15, 2003
    Assignee: Ballard Power Systems Corporation
    Inventors: Feng Liang, John Michael Miller, Xingyi Xu
  • Patent number: 6531799
    Abstract: An electric machine or assembly 10 including a housing 12, a stationary stator 14, two substantially identical and opposed rotors 16, 18, and a pair stationary field coils 22, 24. Field coils 22, 24 are selectively energizable to controllably vary the flux generated by assembly 10, thereby allowing assembly 10 to provide a relatively constant output torque, power, or voltage over a relatively wide range of operating speeds.
    Type: Grant
    Filed: December 20, 1999
    Date of Patent: March 11, 2003
    Assignee: Ford Global Technologies, Inc.
    Inventor: John Michael Miller
  • Patent number: 6490914
    Abstract: A method of sensing crankshaft position for use with an engine (16) having a combined starter/alternator assembly (18). The crankshaft position sensor assembly includes a tone ring (38) with a sensor (36), mounted near the rotor (30) of the combined starter/alternator assembly (18), that produces an initial crankshaft position signal. A bandpass filter (46) receives this initial signal and a cylinder identification input from a camshaft sensor (48) and filters the initial signal. Then, a gain limiter (54) performs an additional filtering process to produce a crankshaft rotational position signal. The filtered crankshaft position signal can then be input into a vehicle system controller (58) and an inner loop controller (60).
    Type: Grant
    Filed: March 25, 1998
    Date of Patent: December 10, 2002
    Assignee: Ford Global Technologies, Inc.
    Inventors: Larry Raymond Brandenburg, John Michael Miller
  • Patent number: 6486571
    Abstract: A circuit (10) for connecting a power distribution bus (14) to a battery (12) has a connector circuit (20) and a switch (40). The battery has a positive battery terminal (16) and a negative battery terminal (18). The switch (40) has a control terminal (46), a first terminal (42), and a second terminal (44). A contactor circuit (48) is coupled between the battery (12) and the power distribution bus (14). The contactor circuit (48) has a solenoid (50) and a plunger switch (52) that is operably coupled by solenoid (50). In one embodiment of the invention the connector circuit has a switch (38) used to allow the connector terminals to be coupled at different times to the circuit. In the second embodiment, different length terminals may be used to enable coupling of the battery terminals at different times.
    Type: Grant
    Filed: March 1, 2002
    Date of Patent: November 26, 2002
    Assignee: Ford Global Technologies, Inc.
    Inventors: John Michael Miller, Paul Raymund Nicastri
  • Patent number: 6445095
    Abstract: An electric machine in accordance with the invention includes a stator core having first and second ends and having windings therein with end turns of the windings protruding from the first and second ends of the stator core. A rotor is rotatably positioned within the stator core. First and second laminated aluminum ring assemblies are positioned against the first and second ends, respectively, of the stator core in contact with the housing. Thermally conductive potting material is positioned between the end turns and the respective first and second ring assembly at the first and second ends of the stator core, thereby creating heat dissipation paths from the end turns, through the potting material and the ring assemblies to the housing.
    Type: Grant
    Filed: January 11, 2001
    Date of Patent: September 3, 2002
    Assignee: Ford Global Technologies, Inc.
    Inventors: Feng Liang, John Michael Miller