Patents by Inventor Russell Wilson-Jones

Russell Wilson-Jones 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: 20200325990
    Abstract: A steering column assembly includes a housing, a shaft, a sensor, a motor, an elongate rod, a nut member, an actuator housing, and end stops. The shaft may be attached to an end of a steering wheel. The sensor may generate an electrical signal in response to rotation of the rotatably mounted shaft. The motor may apply a torque to the rotatably mounted shaft. The elongate rod may be configured to rotate with the rotatably mounted shaft and may include an externally screw-threaded portion having a nut member mounted thereon. The actuator housing may define a chamber to house the motor and a cavity which restricts rotation of the nut member with respect to the housing. The rotation of the elongate rod causes axial displacement of the nut member. The end stops may engage with the nut member.
    Type: Application
    Filed: April 30, 2019
    Publication date: October 15, 2020
    Applicant: TRW Limited
    Inventors: Russell Wilson-Jones, Mark Wilkes
  • Patent number: 10655729
    Abstract: A gearbox assembly for an electric power assisted steering apparatus comprises a gearbox housing which houses a worm shaft and a gear wheel, the worm shaft being supported relative to the housing by a main bearing assembly at an end closest to the motor and by a tail bearing assembly at an end furthest from the motor. The main bearing assembly comprises an inner race and an outer race separated by bearing elements, the outer race being supported by a carrier that is supported by an axle that is in turn secured to gearbox housing, the axle defining a pivot axis for the worm shaft that is located on the side of the worm shaft closest to the wheel gear and extends in a direction orthogonal to the axis of the worm shaft and parallel to the axis of the wheel gear.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: May 19, 2020
    Assignee: TRW Limited
    Inventors: Russell Wilson-Jones, Mark Anthony Wilkes
  • Publication number: 20180202538
    Abstract: A gearbox assembly for an electric power assisted steering apparatus comprises a gearbox housing which houses a worm shaft and a gear wheel, the worm shaft being supported relative to the housing by a main bearing assembly at an end closest to the motor and by a tail bearing assembly at an end furthest from the motor, and the gear wheel being supported by an output shaft having at least one end that provides a take-off from the gearbox assembly, in which the tail bearing assembly is free to move relative to the housing through a limited range of motion that enables the worm shaft to move radially away from the axis of the wheel gear. A biasing means applies a biasing force to the tail bearing assembly that biases the worm shaft into engagement with the wheel gear.
    Type: Application
    Filed: July 5, 2016
    Publication date: July 19, 2018
    Applicant: TRW Limited
    Inventors: Russell Wilson-Jones, Mark Anthony Wilkes
  • Patent number: 8751111
    Abstract: A method of controlling an electric motor in an electric power assisted steering system, the motor being arranged so as to apply a force to part of a steering mechanism of a vehicle, in which the method comprises calculating a force demand indicative of an assistance force dependent upon the torque applied by a user (TD) to the steering mechanism that it is to be applied to the steering mechanism to reduce the exertion required by the user to steer the vehicle; combining the force demand with an overlay force demand (TER) indicative of a force which it is desired to overlay over the assistance force, to generate a combined assistance force (TA); and controlling the motor according to the combined assistance force, such that together with the force applied by the user, a total force is applied to the steering mechanism, in which, in order to generate the combined assistance force the torque applied by the user is subjected to a non-linear boost function and in which the overlay force demand is combined with th
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: June 10, 2014
    Assignee: TRW Limited
    Inventors: Russell Wilson-Jones, Anthony Walter Burton
  • Patent number: 8434583
    Abstract: An electric power assisted steering system comprises a torque sensor, a motor connected to a part of the steering system to provide motor torque to the steering system and a motor controller which is adapted to receive an output signal from the torque sensor and to generate a motor torque demand signal indicative of the torque to be applied by the motor to the steering system. The motor torque demand signal comprises a driver demand component dependent upon the torque applied by the driver; and a diagnostic component independent of the torque applied by the driver and which varies in value over time in a predetermined manner. The system further comprises a monitor that correlates the diagnostic component with the output signal and generates a signal indicating that the output signal is faulty if the correlation falls outside of a predefined range.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: May 7, 2013
    Assignee: TRW Limited
    Inventors: Russell Wilson-Jones, Birk Junghanns, Timothy Sworn, Geoffrey Tullener
  • Publication number: 20120006612
    Abstract: An electric power assisted steering system comprises a torque sensor, a motor connected to a part of the steering assembly to provide an assistance torque to the steering assembly and a motor controller which is adapted to receive an output signal from the torque sensor and to generate a motor torque demand signal indicative of the torque to be applied by said motor to said steering system. The motor torque demand signal comprises a driver demand component with a value dependent upon the value of said handwheel torque applied by the driver; and a diagnostic component with a value independent of said handwheel torque applied by said driver and which varies in value over time in a predetermined manner. The system further comprises a monitor that correlates the diagnostic component with the output signal and generates a signal indicating that the output signal is faulty if the correlation between the two correlated signals falls outside of a predefined range.
    Type: Application
    Filed: April 15, 2011
    Publication date: January 12, 2012
    Applicant: TRW LIMITED
    Inventors: Russell Wilson-Jones, Birk Junghanns, Timothy Sworn, Geoffrey Tullener
  • Publication number: 20110010054
    Abstract: A method of controlling an electric motor in an electric power assisted steering system, the motor being arranged so as to apply a force to part of a steering mechanism of a vehicle, in which the method comprises calculating a force demand indicative of an assistance force dependent upon the torque applied by a user (TD) to the steering mechanism that it is to be applied to the steering mechanism to reduce the exertion required by the user to steer the vehicle; combining the force demand with an overlay force demand (TER) indicative of a force which it is desired to overlay over the assistance force, to generate a combined assistance force (TA); and controlling the motor according to the combined assistance force, such that together with the force applied by the user, a total force is applied to the steering mechanism, in which, in order to generate the combined assistance force the torque applied by the user is subjected to a non-linear boost function and in which the overlay force demand is combined with th
    Type: Application
    Filed: December 7, 2007
    Publication date: January 13, 2011
    Inventors: Russell Wilson-Jones, Anthony Walter Burton
  • Patent number: 6729434
    Abstract: An electric power assisted steering system is disclosed in which a torque demand signal (8) is generated and applied to an electric motor (1) operatively connected to a steering mechanism (5) in order to assist a driver of the vehicle when steering the vehicle. The torque demand signal (8) includes a damping component that is dependent upon a measurement of torque T carried by the steering mechanism and a measurement of the angular velocity &ohgr; of the steering mechanism. The torque produced by the motor (1) is not obtrusive during “hands-on” maneuvers but provides enhanced damping in other maneuvers such as a steering flick.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: May 4, 2004
    Assignee: TRW LucasVarity Electric Steering Ltd.
    Inventors: Simon David Stevens, Anthony Walter Burton, Andrew James Stephen Williams, John Nicholas Cheel, Russell Wilson Jones
  • Patent number: 6691817
    Abstract: An electrical power-assisted steering system is disclosed comprising an electric motor connected through a gearbox to act on a steering mechanism of the vehicle, the electric motor having a plurality of phase windings connected to a star point and switching means provided in at least one phase of the motor, the switching means being movable between a closed position in which current is able to flow in the phase windings, and an open position which prevents current flowing in a respective phase winding. The system incorporates a safety circuit operative when a fault develops to smooth out the transition between the presence and absence of servo support in assisting and not assisting by providing a prescribed period of damped operation as part of a shut-down phase.
    Type: Grant
    Filed: February 1, 2002
    Date of Patent: February 17, 2004
    Assignee: TRW LucasVarity Electric Steering Ltd.
    Inventor: Russell Wilson-Jones
  • Patent number: 6637544
    Abstract: An electric power assisted steering system is disclosed in which a torque demand signal (8) is generated and applied to an electric motor (1) operatively connected to a steering mechanism (5) in order to assist a driver of the vehicle when steering the vehicle. The torque demand signal (8) includes a damping component that is dependent upon a measurement of torque T carried by the steering mechanism and a measurement of the angular velocity &ohgr; of the steering mechanism. The torque produced by the motor (1) is not obtrusive during “hands-on” manoeuvers but provides enhanced damping in other manoeuvers such as a steering flick.
    Type: Grant
    Filed: February 19, 2003
    Date of Patent: October 28, 2003
    Assignee: TRW Lucas Varity Electric Steering Ltd.
    Inventors: Simon David Stevens, Anthony Walter Burton, Andrew James Stephen Williams, John Nicholas Cheel, Russell Wilson Jones
  • Patent number: 6631781
    Abstract: An apparatus and method for controlling an electric steering assist system, which system provides assist in response to a steering control signal, the apparatus comprising: torque sensing means (20) operatively connected to a vehicle hand wheel (12) for providing a torque signal (Ts) indicative of applied steering torque, blending filter means connected to the torque sensing means (20) for providing a blended filtered torque signal having a first functional characteristic at torque frequencies less than a blending frequency and a second functional characteristic at torque frequencies greater than the blending frequency, the blending filter means including a low pass filter (70) which passes all frequencies below the blending frequency and a high pass filter (71) which passes all frequencies above the blending frequency, steering assist means for providing steering assist in response to a control signal, control means operatively connected to the blending filter means for providing said control signal to the s
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: October 14, 2003
    Assignee: TRW Lucas Varity Electric Steering, Ltd.
    Inventors: Andrew James Stephen Williams, Russell Wilson Jones, Anthony Walter Burton, Simon David Stevens, Kevin McLaughlin
  • Patent number: 6597141
    Abstract: A method of calculating the position of the rotor of a motor (1) in for example an electrical power assisted steering assembly is disclosed. The method comprises the steps of measuring the output shaft (2) (i.e. steering column) position, and scaling the measured value to produce an estimated motor rotor position value. This estimated value will be relative to an arbitrary datum point, and so the method further includes steps of adding an offset value derived from low resolution measurements of rotor position obtained using Hall effect sensors provided on the motor. Offsets for compensating for backlash and (in a second embodiment) compliance can also be included. Thus, the method allows high resolution information from an output shaft sensor (e.g. a torque sensor with a position dependent output) to be combined with the low resolution output from the Hall effect sensors to produce a high resolution rotor position signal.
    Type: Grant
    Filed: May 1, 2000
    Date of Patent: July 22, 2003
    Assignee: TRW LucasVarity Electric Steering Ltd.
    Inventors: Russell Wilson-Jones, Anthony Walter Burton, Andrew James Stephen Williams, John Michael Ironside
  • Patent number: 6597136
    Abstract: An electric power assisted steering system of the kind in which an electric motor is operatively connected to a steering assembly through a gearbox to apply an assistance torque to the steering assembly and in which the steering assembly includes a steering column coupled at one end to a driver's handwheel and at the other end to steerable wheels, a means being provided for generating a signal representative of the velocity of rotation of the steering column. The system includes a high pass filter which is adapted to generate, for frequencies below a prescribed threshold, a signal at least approximately proportional to steering column acceleration and representative of the inertia of the rotor of the electric motor, the latter signal being arranged to be used to compensate for the motor rotor inertia in an overall assistance torque demand as developed by the system.
    Type: Grant
    Filed: November 15, 2001
    Date of Patent: July 22, 2003
    Assignee: TRW LucasVarity Electric Steering Ltd.
    Inventors: Anthony Walter Burton, Simon David Stevens, Russell Wilson Jones, Marie Saunier, Tom Michael Richard Ernest Roberts
  • Publication number: 20030132053
    Abstract: An electric power assisted steering system is disclosed in which a torque demand signal (8) is generated and applied to an electric motor (1) operatively connected to a steering mechanism (5) in order to assist a driver of the vehicle when steering the vehicle. The torque demand signal (8) includes a damping component that is dependent upon a measurement of torque T carried by the steering mechanism and a measurement of the angular velocity o) of the steering mechanism. The torque produced by the motor (1) is not obtrusive during “hands-on” manoeuvres but provides enhanced damping in other manoeuvres such as a steering flick.
    Type: Application
    Filed: February 19, 2003
    Publication date: July 17, 2003
    Applicant: TRW Lucas Varity Steering Ltd.
    Inventors: Simon David Stevens, Anthony Walter Burton, Andrew James Stephen Williams, John Nicholas Cheel, Russell Wilson Jones
  • Publication number: 20030024759
    Abstract: An apparatus and method for controlling an electric steering assist system, which system provides assist in response to a steering control signal, the apparatus comprising: torque sensing means (20) operatively connected to a vehicle hand wheel (12) for providing a torque signal (TS) indicative of applied steering torque, blending filter means connected to the torque sensing means (20) for providing a blended filtered torque signal having a first functional characteristic at torque frequencies less than a blending frequency and a second functional characteristic at torque frequencies greater than the blending frequency, the blending filter means including a low pass filter (70) which passes all frequencies below the blending frequency and a high pass filter (71) which passes all frequencies above the blending frequency, steering assist means for providing steering assist in response to a control signal, control means operatively connected to the blending filter means for providing said control signal to the s
    Type: Application
    Filed: February 15, 2002
    Publication date: February 6, 2003
    Inventors: Andrew James Stephen Williams, Russell Wilson Jones, Anthony Walter Burton, Simon David Stevens, Kevin McLaughlin
  • Publication number: 20020125845
    Abstract: An electric power assisted steering system of the kind in which an electric motor is operatively connected to a steering assembly through a gearbox to apply an assistance torque to the steering assembly and in which the steering assembly includes a steering column coupled at one end to a driver's handwheel and at the other end to steerable wheels, a means being provided for generating a signal representative of the velocity of rotation of the steering column. The system includes a high pass filter which is adapted to generate, for frequencies below a prescribed threshold, a signal at least approximately proportional to steering column acceleration and representative of the inertia of the rotor of the electric motor, the latter signal being arranged to be used to compensate for the motor rotor inertia in an overall assistance torque demand as developed by the system.
    Type: Application
    Filed: November 15, 2001
    Publication date: September 12, 2002
    Applicant: TRW LucasVarity Electric Steering Limited
    Inventors: Anthony Walter Burton, Simon David Stevens, Russell Wilson Jones, Marie Saunier, Tom Michael Richard Ernest Roberts
  • Patent number: 6448738
    Abstract: A motor control strategy for use in combination with an electric motor (1) having a number of phase windings (201, 202, 203) is disclosed, the motor (1) being adapted to produce an output torque in response to current in the windings comprising the steps of during normal operation generating a motor torque demand signal indicative of the output torque required from the motor (1), applying a first set of currents to the windings of the motor in response to the motor torque demand signal to produce a first output torque from the motor and during a test operation to enable diagnostics to be performed generating a motor current demand signal indicative of the total current required in the motor windings (201, 202, 203) and adjusting the currents applied to one or more of the windings in response to both the torque demand signal and the motor current demand signal, whereby the adjusted currents produced in the windings are substantially equal to the total current demanded by the motor current demand signal regardl
    Type: Grant
    Filed: May 10, 1999
    Date of Patent: September 10, 2002
    Assignee: TRW Lucas Varity Electric Steering Ltd.
    Inventors: Anthony Walter Burton, Steven John Horton, Andrew James Stephen Williams, John Michael Ironside, Russell Wilson Jones
  • Publication number: 20020117349
    Abstract: An electrical power-assisted steering system is disclosed comprising an electric motor connected through a gearbox to act on a steering mechanism of the vehicle, the electric motor having a plurality of phase windings connected to a star point and switching means provided in at least one phase of the motor, the switching means being movable between a closed position in which current is able to flow in the phase windings, and an open position which prevents current flowing in a respective phase winding, The system incorporates a safety circuit operative when a fault develops to smooth out the transition between the presence and absence of servo support in assisting and not assisting by providing a prescribed period of damped operation as part of a shut-down phase.
    Type: Application
    Filed: February 1, 2002
    Publication date: August 29, 2002
    Inventor: Russell Wilson-Jones
  • Patent number: 6354396
    Abstract: An electric power assisted steering system is disclosed which comprises a steering shaft connected at one end to the handwheel and at its other end to at least one roadwheel, while an electric motor is connected to the steering a gearbox having a non-integer reduction gear ratio. Two sensors are also provided with one sensing the angular position of the motor rotor and the other sensing the angular position of the steering shaft. The presence of the non-integer gear ratio produces a beat frequency between the output of the two sensors from which an unambiguous measurement of the angular position of the steering shaft over a range of greater than one complete revolution can be made. The sensors may comprise either absolute position sensors or index-type sensors.
    Type: Grant
    Filed: February 2, 2000
    Date of Patent: March 12, 2002
    Assignee: TRW LucasVarity Electric Steering Ltd.
    Inventors: Steven John Horton, Russell Wilson-Jones, Simon David Stevens
  • Publication number: 20020017421
    Abstract: An electric power assisted steering system is disclosed in which a torque demand signal (8) is generated and applied to an electric motor (1) operatively connected to a steering mechanism (5) in order to assist a driver of the vehicle when steering the vehicle. The torque demand signal (8) includes a damping component that is dependent upon a measurement of torque T carried by the steering mechanism and a measurement of the angular velocity &ohgr; of the steering mechanism. The torque produced by the motor (1) is not obtrusive during “hands-on” maneuvers but provides enhanced damping in other maneuvers such as a steering flick.
    Type: Application
    Filed: June 29, 2001
    Publication date: February 14, 2002
    Applicant: TRW LucasVarity Electric Steering Ltd.
    Inventors: Simon David Stevens, Anthony Walter Burton, Andrew James Stephen Williams, John Nicholas Cheel, Russell Wilson Jones