Fluidic angular velocity sensor

Details Fluidic angular velocity sensor Fluidic angular velocity sensor

1985-04-04

1986-07-29

Ciarlante, Anthony V.

Measuring and testing

Speed, velocity, or acceleration

Externally connected pressure gauge gives reading

73521, G01P 328

Patent

active

046025090

ABSTRACT:
A fluidic sensor providing a differential pressure signal proportional to the angular velocity of a rotary input. In one embodiment the sensor includes a fluid pump having an impeller coupled to a rotary input. A housing forming a constricting fluid flow chamber is connected to the fluid input of the pump. The housing is provided with a fluid flow restrictive input to the flow chamber and a port communicating with the interior of the flow chamber. The differential pressure signal measured across the flow restrictive input is relatively noise free and proportional to the square of the angular velocity of the impeller. In an alternative embodiment, the flow chamber has a generally cylindrical configuration and plates having flow restrictive apertures are disposed within the chamber downstream from the housing port. In this embodiment, the differential pressure signal is found to be approximately linear with the angular velocity of the impeller.

REFERENCES:
patent: 336069 (1886-02-01), Rung
patent: 713986 (1902-11-01), Hudgson
patent: 939209 (1909-11-01), Bristol
patent: 1034190 (1912-07-01), Bristol
patent: 1559155 (1925-10-01), Bullock
patent: 2614423 (1952-10-01), Carbone
patent: 2750009 (1956-06-01), Pohl

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