公开(公告)号：US11313753B2

公开(公告)日：2022-04-26

申请号：US17012416

申请日：2020-09-04

申请人： Rolls-Royce Corporation

发明人： Emily Holdmeyer ,  Bruce Crook

IPC分类号： G01M3/22

摘要： System and methods are provided for a contamination test rig that includes a particle injection chamber including a pressure chamber, wherein a hopper, scale, and feeder are inside of the particle injection chamber, and wherein the test valve is disposed in a valve line that runs parallel to a by-pass line. A by-pass valve permits at least a portion of a mixture of air and contaminate particles to flow through the by-pass line instead of through the valve line when the by-pass valve is open, and prevents the mixture of air and contaminate particles from flowing through the by-pass line when closed.

公开(公告)号：US20220034744A1

公开(公告)日：2022-02-03

申请号：US17012416

申请日：2020-09-04

申请人： Rolls-Royce Corporation

发明人： Emily Holdmeyer ,  Bruce Crook

IPC分类号： G01M3/22

摘要： System and methods are provided for a contamination test rig that includes a particle injection chamber including a pressure chamber, wherein a hopper, scale, and feeder are inside of the particle injection chamber, and wherein the test valve is disposed in a valve line that runs parallel to a by-pass line. A by-pass valve permits at least a portion of a mixture of air and contaminate particles to flow through the by-pass line instead of through the valve line when the by-pass valve is open, and prevents the mixture of air and contaminate particles from flowing through the by-pass line when closed.

公开(公告)号：US11566968B2

公开(公告)日：2023-01-31

申请号：US17152436

申请日：2021-01-19

申请人： Rolls-Royce Corporation

发明人： Emily Holdmeyer ,  Bruce Crook

IPC分类号： G01M15/02 ,  G01M13/003 ,  G06F17/17 ,  G05D7/06 ,  G05D13/62 ,  G05B13/02 ,  G06F17/11 ,  G01G11/00 ,  G01N15/00

摘要： Systems and methods for control of the delivery of contaminates are provided. A conveyor moves contaminate particles from a hopper into an airflow. The contents of a hopper at multiple time points within a sliding window of time are weighted with a scale. A processor applies linear regression to a data set comprising the time points as an independent variable and the weight measurements as a dependent variable, resulting in a determination of a line fitting the data set. A processor determines a current mass flow rate of the contaminate particles from the slope of the line. The processor determines an estimated change in the conveyor motor speed needed to achieve the target mass flow rate, the estimated change determined from a predetermined mapping of flow rates to motor speeds, the estimated change based on the current mass flow rate, the target mass flow rate, and a predetermined fraction.

公开(公告)号：US20220228950A1

公开(公告)日：2022-07-21

申请号：US17152436

申请日：2021-01-19

申请人： Rolls-Royce Corporation

发明人： Emily Holdmeyer ,  Bruce Crook

IPC分类号： G01M15/02 ,  G01M13/003

摘要： Systems and methods for control of the delivery of contaminates are provided. A conveyor moves contaminate particles from a hopper into an airflow. The contents of a hopper at multiple time points within a sliding window of time are weighted with a scale. A processor applies linear regression to a data set comprising the time points as an independent variable and the weight measurements as a dependent variable, resulting in a determination of a line fitting the data set. A processor determines a current mass flow rate of the contaminate particles from the slope of the line. The processor determines an estimated change in the conveyor motor speed needed to achieve the target mass flow rate, the estimated change determined from a predetermined mapping of flow rates to motor speeds, the estimated change based on the current mass flow rate, the target mass flow rate, and a predetermined fraction.