A force measurement system
AssigneeTusas- Turk Havacilik Ve Uzay Sanayii Anonim Sirketi
InventorsOzcan TURAN, Kamran SAMET, Dilan KUTMARAL, Erdem DIRIK
Life of this patent
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Abstract
A control stick extending outward from a body located at an air vehicle enables the pilot to control tasks such as position and speed of the air vehicle. A strain gauge arm located on a control line in connection with the control stick measures a strain transferred to the control stick. A trim actuator located on the related strain gauge arm on the control line measures positional changes of the air vehicle. A sensor located on the strain gauge arm generates force data at a rate predetermined by the user upon a force exerted on the control stick. A control unit receives force data from sensors and positional percentage values from the trim actuator.
Claims9
A force measurement system (1) comprising:
- a body (2) located at an air vehicle;
- at least one control stick (3) extending outward from the body (2) and enabling the pilot to control tasks such as position and speed of the air vehicle;
- at least one strain gauge arm (4) located on the control line in connection with the control stick (3), which measures a strain transferred to the control stick (3);
- at least one trim actuator (5) located on the related strain gauge arm (4) on the control line, which measures positional changes of the air vehicle;
- at least one sensor (6) located on the strain gauge arm (4) and generating force data (601) at a rate predetermined by the user upon a force exerted on the control stick (3);
- at least one control unit (7) to which force data (601) received from sensors (6) and positional percentage values (501) received from trim actuator (5) are transmitted wherein the control unit (7) has the following algorithmic (A) steps for the positional change movements of the air vehicle that allow:
- calculating an initial average force data (F) on the strain gauge arms (4) on the body (2) before the air vehicle is operated and commands are issued by the pilot;
- taking an arithmetic average of the force data (601) in a number predetermined by the user and transferred to the control unit (7), so that an average force data (B) is calculated and transferred to the control unit (7);
- checking whether the trim actuator (5) is activated or deactivated;
- on the positional percentage value (501) that is lower or higher than a reference percentage value (R) predetermined by the user, calculating and processing at least one ratio value (502) by the control unit (7) with a formula predetermined by the user, such that the positional percentage value (501) and the reference percentage value (R) are at least partially different from each other;
- calculating a final force value (N) exerted by the pilot on the control stick (3) according to the position of the air vehicle, by subtracting the initial average force data (F) from the average force data (B) and dividing this value by the ratio value (502) that is calculated by the formula predetermined by the user;
- and
- calculating a final force value (N) exerted by the pilot on the air vehicle.
The force measurement system (1) according to wherein the control unit (7) controls that the positional percent value (501) of the trim actuator (5) is between the previous and the next positional percent value (501).
Dependencies are inferred from the claim text.