专利名称：Velocity transducer
发明人：Romeal F. Asmar,Harold D. Morris申请号：US05/384240申请日：19730731公开号：US03948107A公开日：19760406
摘要：A velocity sensor which may be modified to perform a sensing function foreither angular velocity or linear velocity. The sensor has a base member which is split intoupper and lower halves which are shaped to form internal walls defining an internalchannel when joined together. A fluid is disposed in the internal channel and a paddlemember is placed in communication with the fluid. Sensing means are present to detectthe position of the paddle member as it is urged into motion by the inertia of the fluidmass in the angular embodiment and by the inertia of the paddle member in the linear.An electrical output is provided which is related to the urge to move imparted to thepaddle member. The output is used to electrically restrain the motion of the paddlemember. The output related to paddle member motion is also integrated to provide asignal related to velocity. Saturation of the integrated output unrelated to velocity isprevented by additional electrical means. AC input, DC internal operation, and AC outputis provided as well as fast automatic nulling after application of power, self test meansand an inhibited output in the event of electrical failure within the unit. The fluid massflow path being integral with the base member substantially eliminates thermalgradients within the fluid mass, removing error arising from fluid flow due to thermalgradients. Linear acceleration sensitivity in the angular velocity sensor embodiment is
eliminated by paddle member balance about the pivot axis within the fluid mass duringassembly. Pivot stabilization during shock and vibration loads is provided by adjustableleaf spring supports disposed between the paddle and the base member. The AC outputphase shift relative to the AC input is substantially eliminated over the operationaltemperature range as compared with conventional instruments of this type.
申请人：SYSTRON DONNER CORPORATION
代理机构：Flehr, Hohbach, Test, Albritton & Herbert
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