An apparatus, for example for a pitch change mechanism, includes a cylinder having a magnetic portion defining an annular array of features extending parallel to the longitudinal axis of the cylinder, the cylinder rotating in use and able to translate longitudinally. There is a sensing arrangement including a stationary magnetised core and two coils connected in series and wound around the core. In use, the cylinder rotates and current is induced in the coils. Monitoring equipment is arranged to calculate rotational speed of the cylinder from the frequency of the current and to calculate longitudinal position from the relative amplitude of the current in each coil. Also a method.


    Access

    Download


    Export, share and cite



    Title :

    AXIAL DISPLACEMENT AND ROTATIONAL SPEED MONITORING


    Additional title:

    ÜBERWACHUNG VON AXIALVERSCHIEBUNG UND DREHGESCHWINDIGKEIT
    SURVEILLANCE DE DÉPLACEMENT AXIAL ET DE VITESSE DE ROTATION



    Publication date :

    2017-12-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS , Messen der Länge, der Dicke oder ähnlicher linearer Abmessungen / G01P MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK , Messen der Linear- oder Winkelgeschwindigkeit, der Beschleunigung, der Verzögerung oder des Stoßes / G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE , Anzeigen oder Aufzeichnen in Verbindung mit Messen allgemein / B64C AEROPLANES , Flugzeuge / F04D Strömungsarbeitsmaschinen , NON-POSITIVE-DISPLACEMENT PUMPS



    Axial displacement and rotational speed monitoring

    HOLT JONATHAN E / GARNER STEPHEN G / BELLIS MARK J E | European Patent Office | 2016

    Free access

    Shaft Axial-Displacement Sensor

    Hill, A. J. | NTRS | 1986


    AXIAL DISPLACEMENT ESTIMATION DEVICE

    BABA TAKAHIRO | European Patent Office | 2016

    Free access

    Rotational Speed Control

    P. Bastin | NTIS | 1990


    Modular tray table with rotational displacement mechanism

    SILVERWOOD NEAL / ALLEN SIMON D | European Patent Office | 2024

    Free access