Ascertaining the Ballistic Trajectory of an Electromagnetically Driven Armature of a Coil Actuator
First Claim
1. A method for determining a movement-time profile of an electromagnetically driven armature of an actuator having a coil, the method comprising:
- applying a drive signal to the coil, the drive signal being dimensioned such that the armature;
experiences only a partial deflection from its initial position without reaching an end position defined by a stop, andafter reaching a reversal position, again reaches its initial position, wherein, at least between the reversal position and the initial position, the deflection of the armature as a function of time is described at least approximately by a section of a parabola,determining a time at which the armature reaches its initial position again,determining a speed at which the armature reaches its initial position again, anddetermining the movement-time profile of the armature using a mathematical equation described in the parabola based on the detected time and the detected speed.
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Accused Products
Abstract
A method for determining the movement time curve of an electromagnetically driven armature of an actuator that has a coil may include: (a) applying to the coil a control signal dimensioned such that the armature undergoes only a partial deviation from the armature starting position without reaching an end position defined by a stop, and reaches, the armature starting position again after reaching a turnaround position, wherein the deviation of the armature over time is described at least approximately by a section of a parabola at least between the turnaround position and the starting position, (b) determining the time at which the armature reaches the armature starting position again, (c) determining the speed with which the armature reaches the armature starting position again, and (d) ascertaining the movement time curve of the armature using a mathematical equation that describes the parabola based on the detected time and the detected speed.
16 Citations
14 Claims
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1. A method for determining a movement-time profile of an electromagnetically driven armature of an actuator having a coil, the method comprising:
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applying a drive signal to the coil, the drive signal being dimensioned such that the armature; experiences only a partial deflection from its initial position without reaching an end position defined by a stop, and after reaching a reversal position, again reaches its initial position, wherein, at least between the reversal position and the initial position, the deflection of the armature as a function of time is described at least approximately by a section of a parabola, determining a time at which the armature reaches its initial position again, determining a speed at which the armature reaches its initial position again, and determining the movement-time profile of the armature using a mathematical equation described in the parabola based on the detected time and the detected speed. - View Dependent Claims (2, 3, 4, 5, 6, 9)
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7. A method for the regulated operation of an actuator having a coil and an electromagnetically drivable armature movably mounted relative to the coil, the method comprising:
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determining a movement profile of the electromagnetically driven armature by; applying a drive signal to the coil, the drive signal being dimensioned such that the armature; experiences only a partial deflection from its initial position without reaching an end position defined by a stop, and after reaching a reversal position, again reaches its initial position, wherein, at least between the reversal position and the initial position, the deflection of the armature as a function of time is described at least approximately by a section of a parabola, determining a time at which the armature reaches its initial position again, determining a speed at which the armature reaches initial position again, and determining the movement-time profile of the armature using a mathematical equation described in the parabola based on the detected time and the detected speed, and applying a further drive signal to the coil, wherein the further drive signal is dependent on the determined movement-time profile of the armature in response to the drive signal in such a way that a further movement sequence as a result of the further drive signal at least approximately corresponds to a predetermined setpoint movement profile. - View Dependent Claims (10, 11, 12, 13, 14)
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8. An apparatus for determining a movement-time profile of an electromagnetically driven armature of an actuator having a coil, the apparatus comprising:
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a drive unit configured to apply a drive signal to the coil, the drive signal being dimensioned such that the armature; experiences only a partial deflection from its initial position without reaching an end position defined by a stop, and after reaching a reversal position, reaches its initial position again, wherein, at least between the reversal position and the initial position, the deflection of the armature as a function of time is described at least approximately by a section of a parabola; a unit configured to; determine a time at which the armature reaches its initial position again, and determining a speed at which the armature reaches its initial position again, and an evaluation unit configured to determine the movement-time profile of the armature using a mathematical equation describing the parabola based on the detected time and the detected speed.
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Specification