GEC-Marconi Avionics Solid State Angular Rate Transducer (START) is a gyro dependent for its opeartion on the rotation sensing properties of a resonant shell. A complete gyro requires both a resonant element (the cylinder) and a means of maintaining and measuring the vibration pattern about it. START uses a small electronic module for these vibration control purposes and to provide a usable interface to the user systems. The vibrating element is a cylinder, chosen for its symmetry about the axis of measurement. The vibration pattern is established using piezo electric transducers in a phase locked loop. The transducers are electrically connected as parallel pairs, again for symmetry, but for diagramatic simplicity a single connection only is shown. The choice of high efficiency transducers and low loss material for the cylinder results in a very small power requirement to sustain the oscillation approx. 10 mW. This basic scheme works satisfactorily for steady angular rates but has a very narrow bandwidth when varying rates are applied. This makes it unsuitable for a practical rate sensor. The function of a driver transducers is to overcome this drawback by feeding back an amplified, filtered version of the signal, thus allowing a wide range of performance characteristics to be obtained from a single design of cylinder, solely by changes to the electronic circuit.


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    Title :

    Start vibrating gyroscope


    Additional title:

    Festkörper-Winkelgeschwindigkeitsmeßgeber mit Vibrationsgyroskop


    Contributors:


    Publication date :

    1993


    Size :

    8 Seiten, 8 Bilder



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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