Passive tuned magnetic flux rate feedback sensing and control arrangement
First Claim
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1. A passive tuned magnetic flux rate feedback sensing and control arrangement, comprising:
- a magnetic circuit including a rotor and a stator separated by a gap, the stator carrying a drive coil and a sensor coil;
the stator and the 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 for providing a command signal;
means for providing a signal for energizing the drive coil;
means for combining the signal for energizing the drive coil and the command signal for providing a combined signal;
means connected to the means for providing the combined signal for applying current compensation to the combined signal and for providing a compensated signal;
the means for providing a signal for energizing the drive coil connected to the means for applying current compensation to the combined signal and responsive to the compensated signal therefrom for providing the signal for energizing the drive coil; and
passive tuned means connected across the sensor coil for implementing control of flux rate.
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Abstract
An arrangement for obtaining flux rate information in a magnetic: circuit including passive means connected across a flux rate sensor for implementing control of said flux rate. The passive means being a tuned magnetic flux rate feedback sensing and control arrangement wherein impedance is tuned and the energy loss characteristic is adjustable. The selection of inductance and capacitance values provides tuning and the selection of resistance affects the energy loss characteristics.
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Citations
13 Claims
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1. A passive tuned magnetic flux rate feedback sensing and control arrangement, comprising:
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a magnetic circuit including a rotor and a stator separated by a gap, the stator carrying a drive coil and a sensor coil; the stator and the 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 for providing a command signal; means for providing a signal for energizing the drive coil; means for combining the signal for energizing the drive coil and the command signal for providing a combined signal; means connected to the means for providing the combined signal for applying current compensation to the combined signal and for providing a compensated signal; the means for providing a signal for energizing the drive coil connected to the means for applying current compensation to the combined signal and responsive to the compensated signal therefrom for providing the signal for energizing the drive coil; and passive tuned means connected across the sensor coil for implementing control of flux rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A passive tuned method for sensing and controlling flux rate in a magnetic circuit, comprising:
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supporting a drive coil and a sensor coil on a stator; arranging the stator and a rotor in a magnetic circuit and separating said stator and rotor by a gap; providing a command signal; providing a signal for energizing the drive coil whereby the sensor coil provides a signal proportional to the rate of change of flux in the magnetic circuit; combining the energizing signal and the command signal; applying current compensation to the combined signal; providing the energizing signal in response to the current compensated combined signal; and connecting passive tuned means across the sensor coil for implementing control of flux rate. - View Dependent Claims (10, 11, 12, 13)
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Specification