Patents by Inventor Cristian LAI

Cristian LAI 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: 12276558
    Abstract: Input is received. A conformance is determined. When conformance is determined, a raw torque is measured from a torque sensor at an engine; the raw torque is calibrated using the torque sensor parameters to produce a calibrated torque value, non-torque parameters associated with the engine are measured and the non-torque parameters are applied to a lookup structure to obtain an expected torque value. A separation of the calibrated torque value and the expected torque value is determined and based upon the separation, an operation of the torque sensor is controlled.
    Type: Grant
    Filed: August 16, 2022
    Date of Patent: April 15, 2025
    Assignee: GE Avio S.r.l.
    Inventors: Simone Recchia, Diego di Leo, Pierpaolo Forte, Cristian Lai
  • Patent number: 11920522
    Abstract: Based upon a measured first resistance, a first delta curve is selected. Based upon a measured second resistance, a second delta curve is selected. A first fuel valve position (FVP) is received from a first position sensor, and the first FVP is applied to the first delta curve to obtain a first offset. A second FVP is received from a second position sensor, and the second FVP is applied to the second delta curve to obtain a second offset. The first offset is applied to the first measured FVP to obtain the first compensated FVP and the second offset is applied to the second measured FVP to obtain the second compensated FVP. The first compensated FVP and the second compensated FVP are correlated to obtain a final compensated FVP, which is applied to a desired fuel valve position to obtain a final fuel valve position.
    Type: Grant
    Filed: August 5, 2022
    Date of Patent: March 5, 2024
    Assignee: GE Avio S.r.l.
    Inventors: Diego di Leo, Lorenzo Cipolla, Simone Recchia, Cristian Lai
  • Publication number: 20230314254
    Abstract: Input is received. A conformance is determined. When conformance is determined, a raw torque is measured from a torque sensor at an engine; the raw torque is calibrated using the torque sensor parameters to produce a calibrated torque value, non-torque parameters associated with the engine are measured and the non-torque parameters are applied to a lookup structure to obtain an expected torque value. A separation of the calibrated torque value and the expected torque value is determined and based upon the separation, an operation of the torque sensor is controlled.
    Type: Application
    Filed: August 16, 2022
    Publication date: October 5, 2023
    Inventors: Simone Recchia, Diego di Leo, Pierpaolo Forte, Cristian Lai
  • Publication number: 20230279816
    Abstract: Based upon a measured first resistance, a first delta curve is selected. Based upon a measured second resistance, a second delta curve is selected. A first fuel valve position (FVP) is received from a first position sensor, and the first FVP is applied to the first delta curve to obtain a first offset. A second FVP is received from a second position sensor, and the second FVP is applied to second delta curve to obtain a second offset. The first offset is applied to the first measured FVP to obtain the first compensated FVP and the second offset is applied to the second measured FVP to obtain the second compensated FVP.
    Type: Application
    Filed: August 5, 2022
    Publication date: September 7, 2023
    Inventors: Diego di Leo, Lorenzo Cipolla, Simone Recchia, Cristian Lai
  • Patent number: 11332234
    Abstract: A control system (50) for an electro-hydraulic servo-actuator (26) envisages: a controller (55), to generate a control current (Ic), designed to control actuation of the electro-hydraulic servo-actuator (26), implementing a position control loop based on a position error (ep), the position error (ep) being a difference between a reference position (Posref) and a measured position (Posmeas) of the electro-hydraulic servo-actuator (26); and a limitation stage (58), coupled to the controller (55) to provide a limitation of the actuator speed of the electro-hydraulic servo-actuator (26); the limitation stage (58) limits a rate of change of a driving current (Id) to be supplied to the electro-hydraulic servo-actuator (26), in order to limit the actuator speed.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: May 17, 2022
    Assignee: GE AVIO S.R.L.
    Inventors: Pierpaolo Forte, Giuseppe Donini, Cristian Lai
  • Patent number: 11287781
    Abstract: An electronic control system (30) for a turbopropeller engine (1) having a gas turbine (2, 4, 5, 6) and a propeller (7), coupled to the gas turbine, the control system (10) having a propeller control unit (14) and a turbine control unit (15) to jointly control engine power output based on an input request (PLA), wherein the propeller control unit (14) has a first reference generator (16), to determine a reference propeller speed (Npref) based on the input request (PLA), and a first regulator (19), to regulate a propeller speed (Np). The propeller control unit (14) has a reference correction stage (31) to apply a correction to the reference propeller speed (Npref) and generate thereby a corrected reference propeller speed (I), and the first regulator (19) regulates the propeller speed (Np) based on the corrected reference propeller speed (I) to achieve optimized efficiency.
    Type: Grant
    Filed: February 16, 2018
    Date of Patent: March 29, 2022
    Assignee: GE AVIO S.R.L.
    Inventors: Simone Castellani, Giuseppe Donini, Pierpaolo Forte, Cristian Lai
  • Publication number: 20210362838
    Abstract: A control system (50) for an electro-hydraulic servo-actuator (26) envisages: a controller (55), to generate a control current (Ic), designed to control actuation of the electro-hydraulic servo-actuator (26), implementing a position control loop based on a position error (ep), the position error (ep) being a difference between a reference position (Posref) and a measured position (Posmeas) of the electro-hydraulic servo-actuator (26); and a limitation stage (58), coupled to the controller (55) to provide a limitation of the actuator speed of the electro-hydraulic servo-actuator (26); the limitation stage (58) limits a rate of change of a driving current (Id) to be supplied to the electro-hydraulic servo-actuator (26), in order to limit the actuator speed.
    Type: Application
    Filed: June 28, 2019
    Publication date: November 25, 2021
    Inventors: Pierpaolo Forte, Giuseppe Donini, Cristian Lai
  • Publication number: 20190384234
    Abstract: An electronic control system (30) for a turbopropeller engine (1) having a gas turbine (2, 4, 5, 6) and a propeller (7), coupled to the gas turbine, the control system (10) having a propeller control unit (14) and a turbine control unit (15) to jointly control engine power output based on an input request (PLA), wherein the propeller control unit (14) has a first reference generator (16), to determine a reference propeller speed (Npref) based on the input request (PLA), and a first regulator (19), to regulate a propeller speed (Np). The propeller control unit (14) has a reference correction stage (31) to apply a correction to the reference propeller speed (Npref) and generate thereby a corrected reference propeller speed (I), and the first regulator (19) regulates the propeller speed (Np) based on the corrected reference propeller speed (I) to achieve optimized efficiency.
    Type: Application
    Filed: February 16, 2018
    Publication date: December 19, 2019
    Inventors: Simone Castellani, Giuseppe Donini, Pierpaolo Forte, Cristian Lai
  • Publication number: 20180265207
    Abstract: One example aspect of the present disclosure is directed to a method for implementing modularized logic. The method includes accessing, by one or more processors, control software implemented on a controller to control operation of an aircraft engine. The method includes accessing, by the one or more processors, at least one of a plurality of propeller configuration parameters. The method includes modifying, by the one or more processors, the accessed at least one of the propeller configuration parameters independently of the control software.
    Type: Application
    Filed: February 8, 2018
    Publication date: September 20, 2018
    Inventor: Cristian LAI