Automatic estimation process and device for a flight parameter vector in an aircraft, as well as detection methods and assemblies for a failure affecting such a vector
First Claim
1. A method of automatically estimating a flight parameter vector when in flight used by an electrical flying control system of an aircraft, the method comprising:
- selecting, by an assembly of information sources, a plurality of observed explanatory values from a plurality of explanatory values, wherein each explanatory value represents a flight parameter of the aircraft;
estimating, by an estimated value calculator, a current coefficient vector in a current observation window and a previous coefficient vector in a previous observation window, wherein the current observation window includes a sampling of the observed explanatory values for a most recent period of time and the previous observation window includes a sampling of the observed explanatory values for a previous period of time;
calculating a first estimation of an estimated flight parameter value from the plurality of observed explanatory values observed during the current observation window and the previous coefficient vector, and a second estimation of the estimated flight parameter value from the plurality of observed explanatory values observed during the current observation window and the current coefficient vector, wherein the first and second estimations of the estimated flight parameter value are calculated by implementing a linear relationship between the respective estimated flight parameter value and the respective plurality of observed explanatory values by a Partial Least Squares PLS regression;
comparing the first and second estimations of the estimated flight parameter value and an observed flight parameter vector to detect at least one failure impacting the estimation of the flight parameter vector; and
estimating the flight parameter vector when in flight by using the current coefficient vector in a calculation of the flight parameter vector to minimize error in the flight parameter vector.
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Abstract
Embodiments of the disclosure include methods and devices in which a flight parameter vector for an aircraft is automatically estimated and then compared to a threshold to determine whether the flight parameter vector is accurate. The detection device estimates a coefficient vector in an observation window, calculates an estimated flight parameter value, and minimizes an error associated with the observation window when calculating the estimated flight parameter value of the flight parameter vector. Comparisons may be performed by a failure detector or a flight control computer to determine failures impacting the flight parameter vector.
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Citations
13 Claims
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1. A method of automatically estimating a flight parameter vector when in flight used by an electrical flying control system of an aircraft, the method comprising:
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selecting, by an assembly of information sources, a plurality of observed explanatory values from a plurality of explanatory values, wherein each explanatory value represents a flight parameter of the aircraft; estimating, by an estimated value calculator, a current coefficient vector in a current observation window and a previous coefficient vector in a previous observation window, wherein the current observation window includes a sampling of the observed explanatory values for a most recent period of time and the previous observation window includes a sampling of the observed explanatory values for a previous period of time; calculating a first estimation of an estimated flight parameter value from the plurality of observed explanatory values observed during the current observation window and the previous coefficient vector, and a second estimation of the estimated flight parameter value from the plurality of observed explanatory values observed during the current observation window and the current coefficient vector, wherein the first and second estimations of the estimated flight parameter value are calculated by implementing a linear relationship between the respective estimated flight parameter value and the respective plurality of observed explanatory values by a Partial Least Squares PLS regression; comparing the first and second estimations of the estimated flight parameter value and an observed flight parameter vector to detect at least one failure impacting the estimation of the flight parameter vector; and estimating the flight parameter vector when in flight by using the current coefficient vector in a calculation of the flight parameter vector to minimize error in the flight parameter vector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An automatic estimation device for a flight parameter vector when in flight used by an electrical flying order system of an aircraft, the device comprising:
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an assembly of information sources that select a plurality of observed explanatory values from a plurality of explanatory values and transmit the plurality of observed explanatory values to an estimated value calculator, wherein each explanatory value represents a flight parameter of the aircraft; and the estimated value calculator, which is connected to the assembly of information sources by a link and which performs the following functions; estimate a current coefficient vector in a current observation window and a previous coefficient vector in a previous observation window, wherein the current observation window includes a sampling of the observed explanatory values for a most recent period of time and the previous observation window includes a sampling of the observed explanatory values for a previous period of time, calculate a first estimation of an estimated flight parameter value from the plurality of observed explanatory values observed during the current observation window and the previous coefficient vector, and a second estimation of the estimated flight parameter valude from the plurality of observed explanatory values observed during the current observation window and the current coefficient vector, wherein the first and second estimations of the estimated flight parameter value are calculated by implementing a linear relationship between the respective estimated flight parameter value and the respective plurality of observed explanatory values by a Partial Least Squares PLS regression; compare the first and second estimations of the estimated flight parameter value and an observed flight parameter vector to detect at least one failure impacting the estimation of the flight parameter vector; and estimate the flight parameter vector when in flight by using the current coefficient vector in a calculation of the flight parameter vector to minimize error in the flight parameter vector. - View Dependent Claims (12, 13)
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Specification