| 摘要 |
Electronic compensation apparatus for a drive system associated with a torque motor of an electrohydraulic servovalve. The apparatus includes means to define an open loop transfer function characteristic of the drive system, wherein the transfer function corresponds to a notch filter. Further included are means to provide the open loop characteristic with a closure rate of approximately no more than 6 db/octave with respect to a function 1/ beta =1-Gcl(s), where Gcl(s) corresponds to a closed loop transfer function of the drive system. In particular, the notch filter may be realized in a drive system that includes a series resistive-capacitive circuit connected in parallel with the torque motor. The 6 db/octave closure rate is provided by a variation of the impedance of the series resistive-capacitive circuit.
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