| 摘要 |
<p>1,204,009. Fluid analog systems. GENERAL ELECTRIC CO. May 20, 1968 [May 29, 1967], No. 23867/68. Heading G3H [Also in Division G1] A closed-loop fluidic analog-type accelerometer without any close-fitting, sliding-motion parts comprises an inertial mass 16 resiliently mounted for sensing a selected component of acceleration and generating from a steady pressurized fluid signal a differential analog-type pressurized fluid signal proportional to the acceleration component, a communicating analog-type fluid amplifier providing high-gain amplification and feedback passages 27, 28 from the amplifier output to nozzles 29, 30 applying the amplified signal to the mass 16 to obtain a null-type mode of operation of the accelerometer, wherein the amplifier also provides stabilazation of the high-gain closed loop comprising the mass, amplifier and feed-back. The embodiments described are the same as those described in Specification 1,204,010 except for the feedback arrangements. For example, an angular acceleration sensor, Fig.5a, comprises a cylindrical inertial mass 16 mounted by torsionally resilient members 50, 51 of which the member 51 is hollow and provides a fluid passage to a jet 15 midway between receivers 21, 22 connected by passages 23, 24 to a fluid circuit 26 from which feedback passages 27, 28 supply a differentially pressurized analog output to feedback nozzles 29, 30 arranged on opposite sides of a rigid member 55 protruding radially from the mass 16. The fluidic circuitry for amplifying the differential signal developed across reveivers 21, 22 and for stabilizing the closed-loop response includes a high-gain fluidic operational amplifier 31 comprising a plurity of serially connected analog-type fluid amplifiers with negative feedback and preferably also employs a fluidic power amplifier 32.</p> |
