| 摘要 |
<p>An apparatus for controlling a deflectable magnetic head (1) mounted on a bimorph leaf (2) having a detector (3a,3b) connected to the bimorph leaf (2) for detecting a deflection of the bimorph leaf (2), comprises a drive signal generating circuit (11) for generating a drive signal to deflect the bimorph leaf (2) in response thereto, a combining circuit (8) for combining output signals of the detector (3a,3b) and the drive signal generating circuit (11), a damping signal generating circuit (12) for generating a damping signal to attenuate a distortion of the bimorph leaf (2) that is produced by the deflection of the bimorph leaf (2), a circuit (5) for producing a signal corresponding to the variation of the detector (3a,3b) after application of the damping signal to the bimorph leaf (2), and a circuit (9) connected between the producing circuit (5) and the combining circuit (8) for compensating the corresponding signal thereby to reduce the variation of the detector (3a,3b).</p> |
