Patents by Inventor Vihan Krishnan

Vihan Krishnan 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: 12257714
    Abstract: One variation of a method includes: accessing a maximum deflection distance of a workpiece; defining a first workpiece region characterized by a first compliance range; defining a second workpiece region characterized by a second compliance range greater than the first compliance range; assigning a nominal target force to the workpiece; navigating a sanding head across the first workpiece region during a processing cycle; driving the sanding head below a virtual unloaded surface of the workpiece stored in the virtual model to maintain forces, of the sanding head on the first workpiece region, approximating the nominal target force; calculating a maximum offset between the positions of the sanding head in the first workpiece region and the virtual unloaded surface; and, in response to the first maximum offset approaching the maximum deflection distance, assigning a lower target force to the second workpiece region of the workpiece.
    Type: Grant
    Filed: October 11, 2023
    Date of Patent: March 25, 2025
    Assignee: GrayMatter Robotics Inc.
    Inventors: Avadhoot Ahire, Cheng Gong, Rishav Guha, Satyandra K. Gupta, Ariyan M. Kabir, Vihan Krishnan, Sagar Panchal, Brual C. Shah
  • Patent number: 12257712
    Abstract: A method includes: accessing a toolpath and processing parameters—including a target force and feed rate—assigned to a region of a workpiece; and accessing a wear model representing abrasive degradation of a sanding pad arranged on a sanding head. The method also includes, during a processing cycle: accessing force values output by a force sensor coupled to the sanding head; navigating the sanding head across the workpiece region according to the toolpath and, based on the force values deviating the sanding head from the toolpath to maintain forces of the sanding head on the workpiece region proximal the target force; accessing contact characteristics representing contact between the sanding pad and the workpiece; estimating abrasive degradation of the sanding pad based on the wear model and the sequence of contact characteristics; and modifying the set of processing parameters based on the abrasive degradation.
    Type: Grant
    Filed: October 11, 2023
    Date of Patent: March 25, 2025
    Assignee: GrayMatter Robotics Inc.
    Inventors: Miguel Chavez, Satyandra K. Gupta, Ariyan M. Kabir, Vihan Krishnan, Ashish Kulkarni, Ceasar Navarro, Husein Noble, Brual C. Shah, Jeano Vincent
  • Publication number: 20250058432
    Abstract: A system includes: a pad removal assembly; a replacement pad reservoir; an inspection unit; and a controller. The pad removal assembly includes: a separating element arranged proximal a slot; and a guide surface opposite the separating element. The replacement pad reservoir: arranged adjacent the separating element and housing sanding pads configured to couple the sanding head; and including an aperture in alignment with the guide surface. The inspection unit includes an optical sensor defining a field of view directed toward an imaging plane. The controller configured to: access an image recorded by the optical sensor depicting an abrasive area of a sanding pad arranged on a sanding head; extract features from the image; interpret an abrasive degradation for the abrasive area in the image based on the features; and in response to the abrasive degradation exceeding a threshold degradation, triggering a tool change cycle.
    Type: Application
    Filed: August 16, 2023
    Publication date: February 20, 2025
    Inventors: Miguel A. Chavez-Garcia, Satyandra K. Gupta, Ariyan M. Kabir, Vihan Krishnan, Ashish Kulkarni, Ceasar G. Navarro, Husein M. Noble, Martin G. Philo, Christian A. Salinas, Brual C. Shah
  • Patent number: 12172266
    Abstract: A method for media blasting a workpiece includes, during a scan cycle: accessing a first set of images captured by an optical sensor traversing a scan path over the workpiece; compiling the first set of images into a virtual model of the workpiece; accessing a first set of blast parameters; generating a first tool path for a first workpiece region of the workpiece based on a geometry of the workpiece represented in the virtual model and the first set of blast parameters. The method further includes, during a processing cycle: via the set of actuators, navigating the blast nozzle over the first workpiece region according to the first tool path; and projecting blasting media toward the workpiece according to the first set of blast parameters.
    Type: Grant
    Filed: March 18, 2024
    Date of Patent: December 24, 2024
    Assignee: GrayMatter Robotics Inc.
    Inventors: Avadhoot L. Ahire, Miguel A. Chavez-Garcia, Satyandra K. Gupta, Ariyan M. Kabir, Vihan Krishnan, Ashish Kulkarni, Sagarkumar J. Panchal, Christian A. Salinas, Brual C. Shah, Rahul S. Thorat, Jeano J. Vincent, Murilo M. Zelic
  • Publication number: 20240033912
    Abstract: A method includes: accessing a toolpath and processing parameters—including a target force and feed rate—assigned to a region of a workpiece; and accessing a wear model representing abrasive degradation of a sanding pad arranged on a sanding head. The method also includes, during a processing cycle: accessing force values output by a force sensor coupled to the sanding head; navigating the sanding head across the workpiece region according to the toolpath and, based on the force values deviating the sanding head from the toolpath to maintain forces of the sanding head on the workpiece region proximal the target force; accessing contact characteristics representing contact between the sanding pad and the workpiece; estimating abrasive degradation of the sanding pad based on the wear model and the sequence of contact characteristics; and modifying the set of processing parameters based on the abrasive degradation.
    Type: Application
    Filed: October 11, 2023
    Publication date: February 1, 2024
    Inventors: Miguel Chavez, Satyandra K. Gupta, Ariyan M. Kabir, Vihan Krishnan, Ashish Kulkarni, Ceasar Navarro, Husein Noble, Brual C. Shah, Jeano Vincent
  • Publication number: 20240033914
    Abstract: One variation of a method includes: accessing a maximum deflection distance of a workpiece; defining a first workpiece region characterized by a first compliance range; defining a second workpiece region characterized by a second compliance range greater than the first compliance range; assigning a nominal target force to the workpiece; navigating a sanding head across the first workpiece region during a processing cycle; driving the sanding head below a virtual unloaded surface of the workpiece stored in the virtual model to maintain forces, of the sanding head on the first workpiece region, approximating the nominal target force; calculating a maximum offset between the positions of the sanding head in the first workpiece region and the virtual unloaded surface; and, in response to the first maximum offset approaching the maximum deflection distance, assigning a lower target force to the second workpiece region of the workpiece.
    Type: Application
    Filed: October 11, 2023
    Publication date: February 1, 2024
    Inventors: Avadhoot Ahire, Cheng Gong, Rishav Guha, Satyandra K. Gupta, Ariyan M. Kabir, Vihan Krishnan, Sagar Panchal, Brual C. Shah
  • Publication number: 20230373085
    Abstract: A method includes: accessing a toolpath and processing parameters—including a target force and feed rate—assigned to a region of a workpiece; and accessing a wear model representing abrasive degradation of a sanding pad arranged on a sanding head. The method also includes, during a processing cycle: accessing force values output by a force sensor coupled to the sanding head; navigating the sanding head across the workpiece region according to the toolpath and, based on the force values deviating the sanding head from the toolpath to maintain forces of the sanding head on the workpiece region proximal the target force; accessing contact characteristics representing contact between the sanding pad and the workpiece; estimating abrasive degradation of the sanding pad based on the wear model and the sequence of contact characteristics; and modifying the set of processing parameters based on the abrasive degradation.
    Type: Application
    Filed: April 18, 2023
    Publication date: November 23, 2023
    Inventors: Miguel Chavez, Satyandra K. Gupta, Ariyan M. Kabir, Vihan Krishnan, Ashish Kulkarni, Ceasar Navarro, Husein Noble, Brual C. Shah, Jeano Vincent
  • Patent number: 11820017
    Abstract: A method includes: accessing a toolpath and processing parameters—including a target force and feed rate—assigned to a region of a workpiece; and accessing a wear model representing abrasive degradation of a sanding pad arranged on a sanding head. The method also includes, during a processing cycle: accessing force values output by a force sensor coupled to the sanding head; navigating the sanding head across the workpiece region according to the toolpath and, based on the force values deviating the sanding head from the toolpath to maintain forces of the sanding head on the workpiece region proximal the target force; accessing contact characteristics representing contact between the sanding pad and the workpiece; estimating abrasive degradation of the sanding pad based on the wear model and the sequence of contact characteristics; and modifying the set of processing parameters based on the abrasive degradation.
    Type: Grant
    Filed: April 18, 2023
    Date of Patent: November 21, 2023
    Assignee: GrayMatter Robotics Inc.
    Inventors: Miguel Chavez, Satyandra K. Gupta, Ariyan M. Kabir, Vihan Krishnan, Ashish Kulkarni, Ceasar Navarro, Husein Noble, Brual C. Shah, Jeano Vincent
  • Patent number: 11820016
    Abstract: One variation of a method includes: accessing a maximum deflection distance of a workpiece; defining a first workpiece region characterized by a first compliance range; defining a second workpiece region characterized by a second compliance range greater than the first compliance range; assigning a nominal target force to the workpiece; navigating a sanding head across the first workpiece region during a processing cycle; driving the sanding head below a virtual unloaded surface of the workpiece stored in the virtual model to maintain forces, of the sanding head on the first workpiece region, approximating the nominal target force; calculating a maximum offset between the positions of the sanding head in the first workpiece region and the virtual unloaded surface; and, in response to the first maximum offset approaching the maximum deflection distance, assigning a lower target force to the second workpiece region of the workpiece.
    Type: Grant
    Filed: March 27, 2023
    Date of Patent: November 21, 2023
    Assignee: GrayMatter Robotics Inc.
    Inventors: Avadhoot Ahire, Cheng Gong, Rishav Guha, Satyandra K. Gupta, Ariyan M. Kabir, Vihan Krishnan, Sagar Panchal, Brual C. Shah
  • Publication number: 20230302640
    Abstract: One variation of a method includes: accessing a maximum deflection distance of a workpiece; defining a first workpiece region characterized by a first compliance range; defining a second workpiece region characterized by a second compliance range greater than the first compliance range; assigning a nominal target force to the workpiece; navigating a sanding head across the first workpiece region during a processing cycle; driving the sanding head below a virtual unloaded surface of the workpiece stored in the virtual model to maintain forces, of the sanding head on the first workpiece region, approximating the nominal target force; calculating a maximum offset between the positions of the sanding head in the first workpiece region and the virtual unloaded surface; and, in response to the first maximum offset approaching the maximum deflection distance, assigning a lower target force to the second workpiece region of the workpiece.
    Type: Application
    Filed: March 27, 2023
    Publication date: September 28, 2023
    Inventors: Avadhoot Ahire, Cheng Gong, Rishav Guha, Satyandra K. Gupta, Ariyan M. Kabir, Vihan Krishnan, Sagar Panchal, Brual C. Shah