Patents by Inventor Matthew John Trowell

Matthew John Trowell 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).

  • Patent number: 9266435
    Abstract: A controller for a motorized vehicle having at least a left wheel and a right wheel is provided, where the left wheel and the right wheel are driven independently by a motor arrangement. The controller is arranged to receive control signals from a user input device of the motorized vehicle, the control signals determining a requested left wheel velocity and a requested right wheel velocity. A requested speed of the motorized vehicle is given by a mean of the requested left wheel velocity and the requested right wheel velocity and a requested spin of the motorized vehicle is given by a mean difference of the requested left wheel velocity and the requested right wheel velocity. A scaling unit determines a scaling factor in dependence on the requested speed and the requested spin and scales both the requested speed and the requested spin by the scaling factor to generate a target speed and a target spin.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: February 23, 2016
    Assignee: Penny & Giles Controls Limited
    Inventor: Matthew John Trowell
  • Patent number: 9016410
    Abstract: The technology disclosed relates to a controller and a control method for a motorized vehicle, and in particular to the control of a motorized vehicle having at least a left wheel and a right wheel, the left wheel being driven by a left motor and the right wheel being driven by a right motor. In accordance with such motorized vehicles, linear motion of the vehicle is typically effected by driving the left motor and the right motor in the same direction, while spinning of the vehicle is typically effected by driving the left motor and the right motor in opposite directions. A typical example of such a motorized vehicle is an electric wheelchair.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: April 28, 2015
    Assignee: Penny & Giles Controls Limited
    Inventors: Matthew John Trowell, Jason David Lewis
  • Patent number: 8731754
    Abstract: A controller for a motorised vehicle is provided which is arranged to receive control signals from a user input device and the controller is configured to control a motor arrangement of the motorised vehicle in dependence on the control signals. The controller comprises an acceleration control unit configured to determine a centripetal force factor corresponding to a centripetal force which is currently acting on said motorised vehicle as a result of the control signals and is configured to calculate an acceleration limit for the motorised vehicle in dependence on the centripetal force factor. The acceleration control unit is configured to apply the acceleration limit by modifying a response of the controller to the control signals, such that the motorised vehicle does not exceed the acceleration limit.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: May 20, 2014
    Assignee: Penny & Giles Controls Limited
    Inventor: Matthew John Trowell
  • Publication number: 20120265384
    Abstract: A controller for a motorised vehicle is provided which is arranged to receive control signals from a user input device and the controller is configured to control a motor arrangement of the motorised vehicle in dependence on the control signals. The controller comprises an acceleration control unit configured to determine a centripetal force factor corresponding to a centripetal force which is currently acting on said motorised vehicle as a result of the control signals and is configured to calculate an acceleration limit for the motorised vehicle in dependence on the centripetal force factor. The acceleration control unit is configured to apply the acceleration limit by modifying a response of the controller to the control signals, such that the motorised vehicle does not exceed the acceleration limit.
    Type: Application
    Filed: October 5, 2011
    Publication date: October 18, 2012
    Applicant: PG Drives Technology Limited
    Inventor: Matthew John Trowell
  • Publication number: 20110232977
    Abstract: The technology disclosed relates to a controller and a control method for a motorised vehicle, and in particular to the control of a motorised vehicle having at least a left wheel and a right wheel, the left wheel being driven by a left motor and the right wheel being driven by a right motor. In accordance with such motorised vehicles, linear motion of the vehicle is typically effected by driving the left motor and the right motor in the same direction, whilst spinning of the vehicle is typically effected by driving the left motor and the right motor in opposite directions. A typical example of such a motorised vehicle is an electric wheelchair.
    Type: Application
    Filed: May 14, 2010
    Publication date: September 29, 2011
    Applicant: PG Drives Technology Ltd.
    Inventors: Matthew John Trowell, Jason David Lewis
  • Publication number: 20110238265
    Abstract: A controller for a motorised vehicle having at least a left wheel and a right wheel is provided, where the left wheel and the right wheel are driven independently by a motor arrangement. The controller is arranged to receive control signals from a user input device of the motorised vehicle, the control signals determining a requested left wheel velocity and a requested right wheel velocity. A requested speed of the motorised vehicle is given by a mean of the requested left wheel velocity and the requested right wheel velocity and a requested spin of the motorised vehicle is given by a mean difference of the requested left wheel velocity and the requested right wheel velocity. A scaling unit determines a scaling factor in dependence on the requested speed and the requested spin and scales both the requested speed and the requested spin by the scaling factor to generate a target speed and a target spin.
    Type: Application
    Filed: May 14, 2010
    Publication date: September 29, 2011
    Applicant: PG Drives Technology Ltd.
    Inventor: Matthew John Trowell