摘要:
The present invention is directed to methods, systems, and computer program products for determining a fluid flow estimate vector based on sensor measurements, from one or more inertial sensors, wherein the sensor measurements are indicative of a force on a vehicle. The force on the vehicle may be determined based on the received sensor measurements and a fluid flow estimate vector may be determined corresponding to the determined force based on an inverted Fluid Flow to Force mapping function, wherein the mapping function is trained based on one or more training datasets and the fluid flow estimate vector is indicative of a fluid flow affecting the vehicle. The fluid flow estimate vector may be used to increase the accuracy of inertial navigation techniques, wherein the fluid flow estimate vector may be used with an estimate of the prevailing wind to estimate a ground velocity vector from which a vehicle position estimate may be determined.
摘要:
La présente invention concerne un dispositif de mesure de la vitesse de déplacement d'un fluide. Ce dispositif comporte un équipage mobile (11) partiellement en contact avec un flux de fluide dont on souhaite mesurer la vitesse de déplacement, cet équipage mobile (11) étant déplacé par rapport à une position de repos par un flux dudit fluide, l'amplitude du déplacement de l'équipage mobile dépendant de la vitesse de déplacement du fluide. Ledit dispositif comporte en outre des moyens (17) pour déterminer l'amplitude du déplacement de l'équipage mobile par rapport à ladite position de repos. Ce dispositif est caractérisé en ce que l'équipage mobile (11) comporte une tige de trainée (15) pivotant autour d'une zone de pivotement, en ce que ladite tige de trainée (15) est en contact avec ledit fluide en mouvement et une partie l'équipage mobile (11) est protégée du fluide en mouvement, et en ce que ledit dispositif (10) comporte en outre des moyens de stabilisation (14) du déplacement de l'équipage mobile (11).
摘要:
The invention relates to a detector device for detecting a threshold speed of displacement of a fluid, the detector device comprising a transducer and being configured to exert a first non-zero force in a first direction when the speed of the fluid is less than the threshold speed and to exert a second non-zero force in a second direction when the speed of the fluid is greater than the threshold speed, the first and the second direction being identical or substantially identical and the first and the second force being directed in opposite directions.
摘要:
A device of a dual floating anemometer comprised of a mast, support arms for instruments, purlins, a central buoy, connecting beams, the edge floaters, the buoy hoop, the buoy—anchorage connector, anchorage hoop, anchorage, wind measuring instruments A, the connector beam of the anemometer base B, the wind instrument base B wind measuring instruments B, the anchorages of the edge floaters, the connections of the anchorages of the edge floaters with the edge floaters and the connector hoops of the anchorages with the edge floaters, which can be placed in shallow or big water depths and can simultaneously measure the characteristic wind parameters using both common anemometers and Doppler anemometers, so that the measurements of the wind potential (velocity, direction, turbulence) are extended to a higher altitude than the altitude of the mast which bears the cup anemometers, because of the combinatorial action.