Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Aeronautical vehicle
Reexamination Certificate
1999-11-03
2001-09-18
Louis-Jacques, Jacques H. (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Aeronautical vehicle
C701S011000, C701S014000, C701S015000, C701S016000, C244S190000, C244S197000, C244S223000
Reexamination Certificate
active
06292720
ABSTRACT:
BACKGROUND OF THE INVENTION
This application claims the priority of 198 50 612.0, filed Nov. 3, 1998, the disclosure of which is expressly incorporated by reference herein.
The present invention relates to a trimming process for adapting a simulation system to a controllable, automatically controlled reference system, particularly an airplane.
For analyzing flying tests when testing airplanes, telemetry devices are provided on board the airplanes as well as in a ground station. With these devices, data, which are detected on board the airplane by corresponding sensors, can be transmitted during a flying maneuver to a ground station which is in contact with the airplane systems or the pilot or pilots. After each flying maneuver, these data are normally subjected to an analysis and, in the process, are compared, for example, with test data previously determined in ground tests or with a flight simulation taking place during the flying maneuver in a ground station.
According to this process using known techniques, only the sensor data which were determined and processed in the airplane systems are transmitted, particularly the sensor data of the pilot input systems, of the air data and initial sensor system required for the automatic flight control and the sensor data of the actuators. However, when flight testing automatically controlled airplanes, the condition of the autopilot in the course of or after the respective flying maneuver is unknown.
A disadvantage of the known process accordingly is that conclusions drawn from the telemetrically transmitted sensor data concerning conditions of the autopilot are possible only to a limited extent. Estimates and comparative analyses must therefore be carried out with respect to the autopilot conditions existing during the flying maneuvers which, particularly in the time available during a flight test, are not precise.
SUMMARY OF THE INVENTION
An object of the invention is, therefore, to provide a trimming process for adapting the autopilot conditions generally of an automatically controlled system to those of a reference system, which can be carried out as automatically as possible and during the process on the basis of the known sensor data.
An advantage of the invention is that it provides, without further analyses, data concerning autopilot conditions so that the respective still available autopilot reserves can be determined and it can therefore be technically assessed whether the continuation of the flight testing program is technically feasible with still higher demands on the autopilot. The release for more extensive flying maneuvers may possibly be granted after relatively short time after the termination of the preceding maneuver. As a result, a clear reduction of the flying time and thus of the flying test expenses is achieved.
Furthermore, the labor expenditures for the ground personnel are clearly reduced because the presentation of the flying test and analysis results in the required format can be provided without any action by the ground personnel.
The foregoing object has been achieve by providing a trimming process with two control loops by the same desired input data, wherein a process loop is provided for the adaptation of the returned condition values of the second control loop to the corresponding condition values of the reference system, in which process loop, for a predetermined time, the desired input data fed to the autopilot are acted upon by differential input data values, which are acted upon in the direction of the deviation of the flying condition values which occurs after the conversion of the flying condition values in the first loop.
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Meyer Thomas
Schulz Gerhard
Crowell & Moring LLP
Daimler-Chrysler AG
Louis-Jacques Jacques H.
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