公开(公告)号：US11473510B2

公开(公告)日：2022-10-18

申请号：US16388227

申请日：2019-04-18

Applicant: United Technologies Corporation

Inventor： Joseph Kehoe ,  Richard P. Meisner ,  Manuj Dhingra ,  Patrick D. Couture ,  Matthew R. Feulner ,  Brenda J. Lisitano ,  Christopher L. Ho

IPC: F02C9/54 ,  F01D11/24 ,  F02C9/20 ,  F01D11/20 ,  F01D11/22

Abstract: A method of operating a gas turbine engine includes commanding an acceleration of the gas turbine engine and moving a variable pitch high pressure compressor vane toward an open position thereby reducing an acceleration rate of a high pressure turbine rotor thereby reducing a change in a clearance gap between the high pressure turbine rotor and a blade outer airseal. An active clearance control system of a gas turbine engine includes an engine control system configured to command an acceleration of the gas turbine engine and move a variable pitch high pressure compressor vane toward an open position thereby slowing an acceleration rate of a high pressure turbine rotor thereby reducing a change in a clearance gap between the high pressure turbine rotor and a blade outer airseal located radially outboard of the high pressure turbine rotor.

公开(公告)号：US11346290B2

公开(公告)日：2022-05-31

申请号：US16797572

申请日：2020-02-21

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： Chaohong Cai ,  Richard P. Meisner ,  Timothy J. Crowley ,  David Lei Ma

IPC: F02C9/28

Abstract: A control system for limiting a power turbine torque of a gas turbine engine is disclosed. In various embodiments, the control system includes an engine control module configured to output an effector command signal to a gas generator of the gas turbine engine; a power turbine governor module configured to output to the engine control module a power turbine torque request signal; and a power turbine torque limiter module configured to output to the power turbine governor module a power turbine speed rate signal to limit a power turbine speed overshoot of the gas turbine engine.

公开(公告)号：US20200341442A1

公开(公告)日：2020-10-29

申请号：US16395971

申请日：2019-04-26

Applicant: United Technologies Corporation

Inventor： Richard P. Meisner ,  Kyle C. Musselman

IPC: G05B19/048

Abstract: A method of adaptive anti-windup protection for a control system with cascaded inner control loop and an outer control loops. The method includes receiving an outer loop feedback signal indicative of the response of a plant controlled by the outer control loop and calculating an inner control loop request such that, it would cause saturation of the control device controlled by the inner control loop. The method also includes converting the calculated inner loop request to outer loop anti-windup request limits using kinematic relationships and transmitting the outer loop anti-windup request limits to a controller of the outer control loop. The method may also include applying the outer loop anti-windup request limits to a controller of the outer control loop to limit the inner loop request generated thereby, and executing an outer control loop control law and an inner control loop control law subject to the anti-windup request limits.

公开(公告)号：US10753284B2

公开(公告)日：2020-08-25

申请号：US16162589

申请日：2018-10-17

Applicant: United Technologies Corporation

Inventor： Boris Karpman ,  Richard P. Meisner

IPC: F02C7/26 ,  G05B17/02 ,  F02C9/20 ,  G05D7/06 ,  F01D21/00 ,  F02C9/16 ,  F02C3/04 ,  F04D29/32 ,  G05B13/04 ,  G05B23/02

Abstract: Systems and methods for controlling a fluid-based engineering system are disclosed. The systems and methods may include a model processor for generating a model output, the model processor including a set state module for setting dynamic states of the model processor, the dynamic states input to an open loop model based on the model operating mode. The model processor may further include an estimate state module for determining an estimated state of the model based on at least one of a prior state, current state derivatives, solver state errors, and synthesized parameters. The estimate state module determines an estimator gain associated with the current state derivatives and applies the estimator gain to determine the estimated state of the model.

公开(公告)号：US10539078B2

公开(公告)日：2020-01-21

申请号：US15899800

申请日：2018-02-20

Applicant: United Technologies Corporation

Inventor： Boris Karpman ,  Richard P. Meisner ,  Manuj Dhingra

IPC: F02C7/26 ,  F01D21/00 ,  G05D7/06 ,  G05B23/02 ,  G05B17/02 ,  G05B13/04 ,  F04D29/32 ,  F02C9/20 ,  F02C9/26 ,  F02C3/04 ,  F02C9/16

Abstract: Systems and methods for controlling a fluid based engineering system are disclosed. The systems and methods may include a model processor configured to generate a model output, the model processor including a set state module for setting dynamic states of the model processor, the dynamic states input to an open loop model based on a model operating mode. The model processor may further include an estimate state module configured to determine an estimated state of the model based on at least one of a prior state, current state derivatives, solver state errors, and synthesized parameters, the estimate state module using online linearization and gain calculation to determine estimator gain for determining the estimated state of the model.

公开(公告)号：US10480416B2

公开(公告)日：2019-11-19

申请号：US14770388

申请日：2014-03-14

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： Boris Karpman ,  Richard P. Meisner ,  David Sembiante ,  Thomas Niemczycki

IPC: G05B19/4093 ,  F02C7/26 ,  G05B17/02 ,  F02C9/20 ,  G05D7/06 ,  F01D21/00 ,  F02C9/16 ,  F02C3/04 ,  F04D29/32 ,  G05B13/04 ,  G05B23/02

Abstract: Systems and methods for controlling a fluid based engineering system are disclosed. The systems and methods may include a model processor for generating a model output, the model processor including a set state module for setting dynamic states of the model processor, the dynamic states input to an open loop model based on the model operating mode. The model processor may include an input object for processing model input and setting a model operating mode, the model operating mode being a starting mode if the model input is within a data range associated with a starting operation of the control device. The model processor may further include an estimate state module for determining an estimated state of the model based on a prior state model output and the current state model of the open loop model.

公开(公告)号：US20190338754A1

公开(公告)日：2019-11-07

申请号：US15971300

申请日：2018-05-04

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： Chaohong Cai ,  Timothy J. Crowley ,  David Lei Ma ,  Richard P. Meisner

IPC: F03D7/04 ,  F03D7/02

Abstract: A control system for limiting power turbine torque (QPT) of a gas turbine engine includes a controller including a processor and memory configured to control the gas turbine engine, the controller including an engine control module that provides an effector command signal to a gas generator of the gas turbine engine; a power turbine governor module that outputs a preliminary torque request (QPT_req_pre); and a power turbine torque (QPT) optimal limiter module that outputs a maximum torque topper (QPT_max) to limit a power turbine speed overshoot of the gas turbine engine; wherein the controller outputs a minimum value between the preliminary torque request (QPT_req_pre) and the maximum torque topper (QPT_max) to the engine control module.

公开(公告)号：US10107204B2

公开(公告)日：2018-10-23

申请号：US14767995

申请日：2014-03-14

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： Boris Karpman ,  Richard P. Meisner

IPC: G05B17/02 ,  F02C7/26 ,  F02C9/20 ,  G05D7/06 ,  F01D21/00 ,  F02C9/16 ,  F02C3/04 ,  F04D29/32 ,  G05B13/04 ,  G05B23/02

Abstract: Systems and methods for controlling a fluid based engineering system are disclosed. The systems and methods may include a model processor for generating a model output, the model processor including a set state module for setting dynamic states of the model processor, the dynamic states input to an open loop model based on the model operating mode. The model processor may further include an estimate state module for determining an estimated state of the model based on a prior state model output and the current state model of the open loop model, the estimate state module determining estimator gain associated with the current state model and applying the estimator gain to determine the estimated state of the model.

公开(公告)号：US10036331B2

公开(公告)日：2018-07-31

申请号：US15263414

申请日：2016-09-13

Applicant: United Technologies Corporation

Inventor： Chaohong Cai ,  Timothy J. Crowley ,  Richard P. Meisner

IPC: F02C9/52 ,  B64D27/10 ,  B64C27/12 ,  F02C3/04 ,  F02C9/54

CPC classification number: F02C9/52 ,  B64D27/10 ,  F02C3/04 ,  F02C9/42 ,  F02C9/54 ,  F05D2220/329 ,  F05D2270/02 ,  F05D2270/052 ,  F05D2270/13 ,  F05D2270/44

Abstract: A method and control system for an aircraft using a gas turbine engine is provided. The control system includes a controller that includes a load and engine control modules and communicates control signals to a plant that includes a gas generator and a rotor load, an engine estimation module that receives engine state measurements and effector feedback/command signals from the controller and communicates a power turbine torque estimate, and a load estimation module that receives signals including the power turbine torque estimate, a first power turbine speed value, a first power turbine torque value, a second power turbine speed value, a second power turbine torque value, and a rotor speed value. The load estimation module generates one or more of a power turbine speed estimate, a power turbine torque estimate, and a rotor load estimate based on the received signals.

公开(公告)号：US20180073441A1

公开(公告)日：2018-03-15

申请号：US15263414

申请日：2016-09-13

Applicant: United Technologies Corporation

Inventor： Chaohong Cai ,  Timothy J. Crowley ,  Richard P. Meisner

IPC: F02C9/52 ,  B64D27/10 ,  B64C27/12 ,  F02C3/04 ,  F02C9/54

CPC classification number: F02C9/52 ,  B64C27/12 ,  B64D27/10 ,  F02C3/04 ,  F02C9/42 ,  F02C9/54 ,  F05D2220/329 ,  F05D2270/02 ,  F05D2270/052 ,  F05D2270/13 ,  F05D2270/44

Abstract: A method and control system for an aircraft using a gas turbine engine is provided. The control system includes a controller that includes a load and engine control modules and communicates control signals to a plant that includes a gas generator and a rotor load, an engine estimation module that receives engine state measurements and effector feedback/command signals from the controller and communicates a power turbine torque estimate, and a load estimation module that receives signals including the power turbine torque estimate, a first power turbine speed value, a first power turbine torque value, a second power turbine speed value, a second power turbine torque value, and a rotor speed value. The load estimation module generates one or more of a power turbine speed estimate, a power turbine torque estimate, and a rotor load estimate based on the received signals.