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    • 92. 发明申请
    • METHOD AND SYSTEM FOR FAULT ACCOMMODATION OF MACHINES
    • 机器故障定位方法与系统
    • US20080229754A1
    • 2008-09-25
    • US11689874
    • 2007-03-22
    • Kai Frank GoebelRajesh Venkat SubbuRandal Thomas RauschDean Kimball Frederick
    • Kai Frank GoebelRajesh Venkat SubbuRandal Thomas RauschDean Kimball Frederick
    • F02C1/00
    • F02C9/00F05D2270/44F05D2270/71Y02T50/671
    • A method for multi-objective fault accommodation using predictive modeling is disclosed. The method includes using a simulated machine that simulates a faulted actual machine, and using a simulated controller that simulates an actual controller. A multi-objective optimization process is performed, based on specified control settings for the simulated controller and specified operational scenarios for the simulated machine controlled by the simulated controller, to generate a Pareto frontier-based solution space relating performance of the simulated machine to settings of the simulated controller, including adjustment to the operational scenarios to represent a fault condition of the simulated machine. Control settings of the actual controller are adjusted, represented by the simulated controller, for controlling the actual machine, represented by the simulated machine, in response to a fault condition of the actual machine, based on the Pareto frontier-based solution space, to maximize desirable operational conditions and minimize undesirable operational conditions while operating the actual machine in a region of the solution space defined by the Pareto frontier.
    • 公开了一种使用预测建模的多目标故障调节方法。 该方法包括使用模拟故障实际机器的仿真机,并使用模拟实际控制器的仿真控制器。 基于模拟控制器的指定控制设置和由模拟控制器控制的模拟机器的指定操作场景,执行多目标优化过程,生成与仿真机器的性能相关的基于Pareto前沿的解空间, 模拟控制器,包括对操作场景的调整,以表示模拟机器的故障状态。 实际控制器的控制设置由模拟控制器进行调整,用于根据基于Pareto前沿解决方案空间的实际机器的故障情况来控制由仿真机器表示的实际机器,以最大化 期望的操作条件,并且在由帕累托边界限定的解空间的区域中操作实际机器时最小化不期望的操作条件。
    • 94. 发明申请
    • Determination of a degradation of a gas turbine
    • 确定燃气轮机的劣化
    • US20020143477A1
    • 2002-10-03
    • US10072989
    • 2002-02-12
    • Marc AntoinePatrick Escher
    • G01B003/44
    • G05B23/0254F02C9/00F05D2200/11F05D2200/14F05D2200/33F05D2270/00F05D2270/44F05D2270/50F05D2270/71G01D3/08G05B23/0283
    • A degradation state of the gas turbine is repeatedly estimated with the aid of a set of measured values, at least one of the measured values not being taken into account in each case during the estimation. A deviating estimate which deviates substantially from the remaining estimates or from an estimate which takes account of all the measured values implies that a measured value which has not been taken into account for this deviating estimate is defective. This renders it possible to distinguish in a simple way between changes in state and measuring errors. In the case of a method for determining a degradation of a gas turbine which is being implemented in any case, the determination of defective sensors according to the invention is possible with a low programming outlay and without assumptions concerning a response of individual sensors.
    • 燃气轮机的劣化状态借助于一组测量值被重复地估计,在估计期间在每种情况下都不考虑至少一个测量值。 偏离与剩余估计值或考虑到所有测量值的估计值的偏差估计值意味着对该偏差估计值未考虑的测量值是有缺陷的。 这使得可以以简单的方式区分状态变化和测量误差。 在用于确定在任何情况下实现的燃气轮机的劣化的方法的情况下,根据本发明的缺陷传感器的确定是可能的,具有低编程支出,并且不具有关于各个传感器的响应的假设。
    • 96. 发明授权
    • Analytical flow meter backup
    • 分析流量计备份
    • US5115635A
    • 1992-05-26
    • US615944
    • 1990-11-20
    • Tyler R. JenningsLouis J. LarkinRodney O. Johnson
    • Tyler R. JenningsLouis J. LarkinRodney O. Johnson
    • F02C9/26F02C9/28
    • F02C9/26F02C9/28F05D2270/71
    • A gas turbine engine control system sends a demand signal to a fuel throttle valve. The demand signal is modified by a measured fuel flow signal during normal operation. Operating parameters such as pump speed and recirculation valve portion are sensed. Combining these sensed parameters with the known geometry of the system, a calculated pressure differential between a point upstream of the throttle valve and a point in the combustor is determined. This calculated pressure differential is applied to the known geometry of the system from before the throttle valve to the combustor, including sensed opening of the throttle valve. A calculated flow is thus obtained and compared to the measured flow. An excessive difference between the measured and calculated flows indicates flow meter error. In such a case the calculated flow is substituted for the measured flow in modifying the demand signal.
    • 燃气涡轮发动机控制系统向燃料节流阀发送需求信号。 在正常操作期间,通过测量的燃料流量信号修改需求信号。 检测诸如泵速度和再循环阀部分的操作参数。 将这些感测参数与系统的已知几何结合起来,确定节气门上游点与燃烧器中的点之间的计算压力差。 该计算的压力差被应用于从节气门到燃烧器之前的系统的已知几何形状,包括感测到的节流阀的打开。 因此获得计算流量并与测量流量进行比较。 测量和计算流量之间的过大差异表示流量计误差。 在这种情况下,在修改需求信号时,计算的流量代替测量的流量。
    • 97. 发明授权
    • Nonlinear multivariable control system
    • 非线性多变量控制系统
    • US4928484A
    • 1990-05-29
    • US286690
    • 1988-12-20
    • Joseph L. Peczkowski
    • Joseph L. Peczkowski
    • F02C9/28G05B13/04
    • F02C9/28G05B13/04G05B13/048F05D2270/71
    • There is disclosed an apparatus for and method of controlling a plant such as a turbojet engine wherein a model of the plant is created and plant performance request signals are applied to both the plant and the model of the plant. The performance of the model of the plant is used to modify the performance request signals supplied to the plant. Plant and plant model responses may also be compared to monitor degradation in performance of the plant. To adapt the scheme to nonlinear plants, the creation of a plurality of linear plant models each mimicking plant operation over a different limited portion of the toal range of plant performance is employed and there is a plant model for each of several different plant operation points about each of which, the actual plant operation is approximately linear. The technique may further include the creating of a model of the inverse of the plant, in which case, the step of applying plant performance request signals to both the plant and the model of the plant includes passing the performance request signals through the model of the inverse of the plant and subsequently to both the plant and the model of the plant. A preliminary step of screening the plant performance requests and modifying any signals requesting an excessively abrupt change in plant performance is also disclosed.
    • 公开了一种用于控制诸如涡轮喷气发动机的设备的方法和方法,其中创建工厂的模型,并将工厂性能请求信号应用于工厂和模型。 工厂模型的性能用于修改提供给工厂的性能请求信号。 也可以比较植物和植物模型反应来监测植物性能的降低。 为了使该方案适应非线性植物,采用多个线性植物模型的创建,每个线性植物模型在植物表现的不同部分的不同有限部分上模拟植物操作,并且对于几个不同的植物操作点 其中每个实际工厂操作大致是线性的。 该技术可以进一步包括创建工厂的逆向的模型,在这种情况下,将工厂性能请求信号施加到工厂和模型的两个模型的步骤包括将性能请求信号通过模型 植物的逆向,随后植物和植物的模型。 还公开了筛选工厂性能请求和修改任何要求工厂性能过度突变的信号的初步步骤。