| 摘要 |
The invention relates to a capacitive position encoder (1), comprising at least one capacitor with a first capacitor plate and a second capacitor plate, a dielectric modulator that is movably arranged between said first capacitor plate and said second capacitor plate, a signal source (11) for providing a phase-shifted excitation signal to the first capacitor plate of said at least one capacitor, and a charge amplifier (20) that is electrically connected to the second capacitor plate of said at least one capacitor, wherein a feedback loop (21) of the charge amplifier (20) comprises a feedback capacitor (C f ), wherein the capacitive position encoder (1) also comprises a shock cancellation circuit (30) that forms a parallel circuit with the feedback loop (21) including the feedback capacitor (C f ) and that the shock cancellation circuit (30) comprises a low pass filter (31). |
