Active broadband magnetic flux rate feedback sensing arrangement

An active broadband magnetic flux rate feedback sensing arrangement, comprising:

• a magnetic circuit including a rotor and a stator, the stator carrying a drive coil and a sensor coil;
• the stator and rotor cooperatively arranged so that a signal is induced in the sensor coil and the sensor coil provides a signal proportional to the rate of change of flux in the magnetic circuit;
• means connected to the sensor coil for processing the flux rate of change signal therefrom and for providing a processed flux rate of change signal;
• means for providing a command signal;
• means connected to the processing means and to the command signal means for combining the processed flux rate of change signal and the command signal and for providing a combined signal;
• compensating means connected to the combining means for applying broadband compensation to the combined signal and for providing a compensated combined signal;
• modulating means connected to the compensating means for modulating the compensated combined signal and for providing a modulated compensated combined signal;
• the drive coil connected to the modulating means for being energized by the modulated signal therefrom;
• and
• the modulating means connected to the combining means for applying the modulated compensated combined signal thereto, whereby the modulated compensated combined signal is combined with the command signal and the processed flux rate of change signal for providing the combined signal.