| 发明名称 |
METHOD OF DETECTING ATTITUDE FAULTS BASED ON MAGNETOMETER MEASUREMENTS |
| 摘要 |
An avionics system comprises one or more attitude sources, each configured to produce a respective calculated attitude solution; at least one magnetometer configured to measure magnetic field; and at least one attitude monitor configured to use the respective calculated attitude solution from one of the attitude sources to project the measured magnetic field estimate or an Earth Magnetic Field Model (EMFM) estimate such that the measured magnetic field estimate and the EMFM estimate are in a common shared frame. The at least one attitude monitor is further configured to determine a difference between the measured magnetic field estimate and the EMFM estimate in the common shared frame. The at least one attitude monitor is further configured to output an alert, which indicates that the respective calculated attitude solution used to project the measured magnetic field estimate or the EMFM estimate is in error, if the difference exceeds a predetermined threshold. |
| 申请公布号 |
US2016109233(A1) |
申请公布日期 |
2016.04.21 |
| 申请号 |
US201514599027 |
申请日期 |
2015.01.16 |
| 申请人 |
Honeywell International Inc. |
发明人 |
Morrison John R.;Weed Douglas Mark;Hickey Mark |
| 分类号 |
G01C9/00;G01C17/38;B64D43/00;B64D45/00;G01S19/40 |
主分类号 |
G01C9/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An avionics system comprising:
one or more attitude sources, each configured to produce a respective calculated attitude solution; at least one magnetometer configured to measure magnetic field in a frame of the avionics system; and at least one attitude monitor configured to use the respective calculated attitude solution from at least one of the one or more attitude sources to project at least one of the measured magnetic field estimate or an Earth Magnetic Field Model estimate such that the measured magnetic field estimate and the Earth Magnetic Field Model estimate are in a common shared frame; wherein the at least one attitude monitor is further configured to determine a respective difference between the measured magnetic field estimate and the Earth Magnetic Field Model estimate in the common shared frame; wherein the at least one attitude monitor is further configured to output an alert, which indicates that the respective calculated attitude solution used to project at least one of the measured magnetic field estimate or the Earth Magnetic Field Model estimate is in error, if the respective difference between the measured magnetic field estimate and the Earth Magnetic Field Model estimate exceeds a predetermined threshold. |
| 地址 |
Morristown NJ US |
