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公开(公告)号：US10975776B2
公开(公告)日：2021-04-13
申请号：US15092928
申请日：2016-04-07
Applicant: United Technologies Corporation
Inventor： Tyler J. Selstad
Abstract: According to an aspect, a correction factor for a fuel flow of a fuel system of an engine is determined. A nominal fuel flow is determined based on a metering valve stroke. The correction factor is applied to the nominal fuel flow to produce an estimated fuel flow to control combustion in the engine.
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公开(公告)号：US10423473B2
公开(公告)日：2019-09-24
申请号：US15490575
申请日：2017-04-18
Applicant: UNITED TECHNOLOGIES CORPORATION
Inventor： Sorin C. Bengea , Tyler J. Selstad , Timothy J. Crowley
Abstract: A method for controlling a gas turbine engine having a constrained model based control (CMBC) system. The method including obtaining information about a current and previous states of the engine, updating model data information in the CMBC and a parameter estimation system based on the obtained information, and identifying trends in the data based on the information. The method also includes diagnosing the engine, based on the identified trends, determining at least one of a new constraint, objective, initial condition, model characteristic, prediction horizon, and control horizon for the control system based on the diagnosing step if the diagnosing step identified a fault condition, and adapting the CMBC system based on the at least one new constraint, objective, initial condition, model characteristic, prediction and control horizon. The method further includes generating at least on control command based on the adapting and commanding an actuator based on the control command.
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公开(公告)号：US10345830B2
公开(公告)日：2019-07-09
申请号：US15145508
申请日：2016-05-03
Applicant: United Technologies Corporation
Inventor： Timothy J. Crowley , Tyler J. Selstad , Ding Xibei
Abstract: According to an aspect, a method includes generating, by a computer processor, thermo-fluid parameter estimates of a thermal management system (TMS) of an engine based on sensed parameters and monitoring for TMS component failures based on the thermo-fluid parameter estimates and the sensed parameters. Thermo-mechanical parameter estimates are generated based on selected thermo-fluid parameters. Life usage estimates and life usage rate estimates are generated based on the selected thermo-fluid parameters and the thermo-mechanical parameter estimates. Life usage rate targets are generated based on external commands and the life usage estimates. Limits and goals are modified based on the life usage rate estimates, failure flags, and the life usage rate targets. A model predictive control is applied to command one or more TMS control components based on thermo-mechanical model parameters, the failure flags, and the limits and goals.
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14.发明申请公开(公告)号：US20180300191A1
公开(公告)日：2018-10-18
申请号：US15490575
申请日：2017-04-18
Applicant: UNITED TECHNOLOGIES CORPORATION
Inventor： Sorin C. Bengea , Tyler J. Selstad , Timothy J. Crowley
IPC: G06F11/07
CPC classification number: G06F11/07 , F02D9/00 , F02D41/22 , F02D41/2441 , F02D2041/1412 , F02D2041/1423 , F02D2041/1433 , F05D2220/321 , G05B13/048 , G06F11/0703 , Y02T10/40
Abstract: A method for controlling a gas turbine engine having a constrained model based control (CMBC) system. The method including obtaining information about a current and previous states of the engine, updating model data information in the CMBC and a parameter estimation system based on the obtained information, and identifying trends in the data based on the information. The method also includes diagnosing the engine, based on the identified trends, determining at least one of a new constraint, objective, initial condition, model characteristic, prediction horizon, and control horizon for the control system based on the diagnosing step if the diagnosing step identified a fault condition, and adapting the CMBC system based on the at least one new constraint, objective, initial condition, model characteristic, prediction and control horizon. The method further includes generating at least on control command based on the adapting and commanding an actuator based on the control command.
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公开(公告)号：US20180274390A1
公开(公告)日：2018-09-27
申请号：US15582907
申请日：2017-05-01
Applicant: United Technologies Corporation
Inventor： Jesse W. Clauson , Tyler J. Selstad
Abstract: A bowed rotor prevention system for a gas turbine engine includes a bowed rotor prevention motor. A motor shaft of the bowed rotor prevention motor is operable to drive rotation of the gas turbine engine through an engine accessory gearbox. The motor shaft interfaces with an air turbine operable to rotate an output shaft mechanically linked to the engine accessory gearbox. The bowed rotor prevention system also includes a controller operable to engage the bowed rotor prevention motor and drive rotation of the gas turbine engine below an engine starting speed until a bowed rotor prevention threshold condition is met.
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Patent Agency Ranking
公开(公告)号：US10260425B2
公开(公告)日：2019-04-16
申请号：US15147173
申请日：2016-05-05
Applicant: United Technologies Corporation
Inventor： Timothy J. Crowley , Tyler J. Selstad , Sorin Bengea , Robert H. Luppold
Abstract: A fuel system for a gas turbine engine includes, among other things, a plurality of components defining a plurality of localized nodes at distinct locations relative to a fuel flow path, each of the plurality of localized nodes characterized by a distinct set of failure parameters. One or more fuel sensors are configured to measure at least one fuel condition relating to flow through the fuel flow path. A fuel observation assembly is coupled to one or more engine sensors configured to measure at least one engine condition. The fuel observation assembly comprises an estimation module operable to calculate an expected condition of each of the plurality of localized nodes based upon the set of failure parameters, an observation module operable to calculate an observed condition of each of the plurality of localized nodes, the observed condition based on present values of the at least one fuel condition and the at least one engine condition, and a comparison module operable to determine an abnormality corresponding to a first one of the plurality of localized nodes based upon a comparison of the expected condition and the observed condition for each of the plurality of localized nodes.
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公开(公告)号：US20170328567A1
公开(公告)日：2017-11-16
申请号：US15152182
申请日：2016-05-11
Applicant: United Technologies Corporation
Inventor： Timothy J. Crowley , Tyler J. Selstad , David Gelwan
CPC classification number: F23R3/28 , F02C7/22 , F02C9/28 , F02C9/54 , F02D41/30 , F05D2260/964 , F05D2270/092 , F23N1/002 , F23N5/003 , F23N5/242 , F23N2031/06 , F23N2041/20
Abstract: A multivariable fuel control and estimator (MFCE) of a gas turbine engine for preventing combustor blowout is provided. The MFCE includes a first input port that receives controller requests and provide system usage commands, a second input port that receives measured disturbance values, a third input that receives system and component limits, a fourth input port that receives sensed parameters, a fuel system model of the fuel system of the gas turbine engine and an engine model of the engine system that includes the combustor of the gas turbine engine, a processor that generates a control signal for controlling the fuel valve and generates a control signal for controlling the actuator using the fuel system and engine model based on the controller requests, the measured disturbance values, the system and component limits, and the sensed parameters, and an output port that transmits the control signals to the fuel system.
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公开(公告)号：US20170114726A1
公开(公告)日：2017-04-27
申请号：US14920453
申请日：2015-10-22
Applicant: United Technologies Corporation
Inventor： Tyler J. Selstad
CPC classification number: F02C9/263 , F02C7/232 , F05D2260/82 , F05D2260/83
Abstract: A method for actively calculating a capability of an electronically controlled valve is provided. The method including the steps of: a) operating the electronically controlled valve in accordance with a task; b) testing the electronically controlled valve in order to determine a range of movement of the electronically controlled valve in accordance with an initial gain, wherein the testing of the electronically controlled valve occurs after the valve has been operated in accordance with the task; c) determining a new gain required for providing a predetermined range of movement of the electronically controlled valve; and d) repeating steps a-c at least once, wherein the new gain is used to operate the valve in accordance with the task.
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19.发明申请FUEL FLOW ESTIMATION AND CONTROL SYSTEM AND METHOD IN A GAS TURBINE ENGINE 审中-公开燃油涡轮发动机的燃油流量估算与控制系统及方法公开(公告)号：US20160245188A1
公开(公告)日：2016-08-25
申请号：US14626631
申请日：2015-02-19
Applicant: United Technologies Corporation
Inventor： Tyler J. Selstad , Todd Haugsjaahabink
CPC classification number: F02C9/32 , F02C9/263 , F05D2220/32 , F05D2260/821 , G01F1/34 , G01F13/00
Abstract: A system and methods of estimating and controlling fuel flow in a gas turbine engine are disclosed. The system and methods include providing a metering valve and a pressure regulating valve. The system and methods further include determining a differential pressure error of the pressure regulating valve based on a metering valve inlet pressure, a discharge pressure, and a bypass fuel flow and determining a metering valve fuel flow based on a metering valve position and the differential pressure error.
Abstract translation: 公开了一种在燃气涡轮发动机中估计和控制燃料流量的系统和方法。 该系统和方法包括提供计量阀和压力调节阀。 该系统和方法还包括基于计量阀入口压力，排出压力和旁路燃料流量来确定压力调节阀的差压误差，并且基于计量阀位置和差压确定计量阀燃料流量 错误。
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20.发明申请公开(公告)号：US20140165579A1
公开(公告)日：2014-06-19
申请号：US13718066
申请日：2012-12-18
Applicant: UNITED TECHNOLOGIES CORPORATION
Inventor： Tyler J. Selstad
IPC: F02C9/26
CPC classification number: F02C9/26 , F01D21/003 , F05D2260/80 , F05D2270/3015
Abstract: The speed of a high-pressure turbine of a gas turbine engine may be determined using known centrifugal pump affinity relationships for a fuel pressure apparatus, fuel pressure apparatus input and output pressures, and gear ratios for a mechanical linkage between the high-pressure turbine and the fuel pressure apparatus. The technique avoids wear-related variations in gas pressure based measurements and also applies to fuel pressure apparatus using both single pump and multiple pump configurations.
Abstract translation: 燃气涡轮发动机的高压涡轮机的速度可以使用用于燃料压力装置，燃料压力装置输入和输出压力以及高压涡轮机和 燃料压力装置。 该技术避免了基于气体压力的测量的磨损相关变化，并且也适用于使用单泵和多泵配置的燃油压力装置。
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