-
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.
-
公开(公告)号：US20160069277A1
公开(公告)日：2016-03-10
申请号：US14626163
申请日：2015-02-19
Applicant: UNITED TECHNOLOGIES CORPORATION
Inventor： Richard P. MEISNER , Chaohong Cai , James W. Fuller , Timothy J. Crowley
CPC classification number: F02C9/52 , F02C9/00 , F02C9/28 , F02C9/54 , F05D2270/02 , F05D2270/304
Abstract: A system and methods are provided for controlling turboshaft engines. In one embodiment, a method includes receiving input signals for a collective lever angle (CLA) command and real-time power turbine speed (NP) of an engine, determining system data for engine effectors by the control unit based on the input signals for the collective lever angle (CLA) command and the real-time power turbine speed (NP) based on an integrated model for the turboshaft engine including a model of a gas generator section of the turboshaft engine and a model of a power turbine and rotor load section of the turboshaft engine. The method may also include determining control output based on model-based multi-variable control including optimization formulation and a constrained optimization solver. The method may also include outputting one or more control signals for control of the turboshaft engine.
Abstract translation: 提供了一种用于控制涡轮轴发动机的系统和方法。 在一个实施例中，一种方法包括接收用于集体杠杆角（CLA）指令和发动机的实时动力涡轮转速（NP）的输入信号，由控制单元基于输入信号的输入信号确定发动机效应器的系统数据 集体杠杆角（CLA）指令和基于用于涡轮轴发动机的综合模型的实时功率涡轮转速（NP），其包括涡轮轴发动机的气体发生器部分的模型和动力涡轮机和转子负载部分的模型 的涡轮轴发动机。 该方法还可以包括基于基于模型的多变量控制来确定控制输出，包括优化公式和约束优化求解器。 该方法还可以包括输出用于控制涡轮轴发动机的一个或多个控制信号。
-
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：US10711734B2
公开(公告)日：2020-07-14
申请号：US16377488
申请日：2019-04-08
Applicant: UNITED TECHNOLOGIES CORPORATION
Inventor： Chaohong Cai , Timothy J. Crowley , Mark E. Lacour , David Lei Ma
Abstract: A control system for a gas turbine engine, a method for controlling a gas turbine engine, and a gas turbine engine are disclosed. The control system may include a nozzle scheduler for determining an exhaust nozzle position goal based on a nozzle schedule of exhaust nozzle positions related to flight conditions. The control system may further include a control module for determining a control command for the gas turbine engine. The control command may include, at least, a fuel flow command and an exhaust nozzle position command and the control command may be based on, at least, the exhaust nozzle position goal and an estimated thrust value. The control system may further include an actuator for controlling the gas turbine engine based on the control command.
-
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
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.
-
Patent Agency Ranking
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.
-
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.
-
28.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.
-
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
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
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.
-
-
-
-
-
-
-
-
-
Search Results
31
records
(took 0.02 seconds)
