Method and device for compensating phase delays
AssigneeRobert Bosch GmbH
InventorChristof Hammel
Life of this patent
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Abstract
A method for compensation of phase delays that occur in discrete sampling of an analog output signal (US) has the steps of subjecting the output signal (US) to signal processing by an anti-aliasing filter and then by a sampling member to obtain a sampling signal (UA) that has a sampling period (T), compensating a phase delay of the sampling signal caused by the sampling member, taking into account the sampling signal of a preceding sampling period to obtain a signal (UF,K), and compensating of the phase delay of the sampling signal caused by the anti-aliasing filter, taking into account a filter time constant (TF) of the anti-aliasing filter, a sampling period (TA) of the sampling member, and the sampling signal of the preceding sampling period, to obtain a signal (USK).
Claims13
A method for compensation of phase delays that occur in discrete sampling of an analog output signal (US), comprising the steps of subjecting the output signal (US) to signal processing by an anti-aliasing filter and then by a sampling member to obtain a sampling signal (UA) that has a sampling period (T);
- compensating a phase delay of the sampling signal caused by the sampling member;
- taking into account the sampling signal of a preceding sampling period to obtain a signal (UF,K);
- and compensating the phase delay of the sampling signal caused by the anti-aliasing filter, taking into account a filter time constant (TF) of the anti-aliasing filter, a sampling period (TA) of the sampling member, and the sampling signal of the preceding sampling period, to obtain a signal (USK).
An arrangement or compensation of phase delays that occur in discrete-time sampling of an output signal (US) in which the output signal (US) is subjected to signal processing by an anti-aliasing filter to obtain a signal (UF) and then by a sampling member for obtaining a sampling signal (UA), the arrangement comprising means for compensation for a phase delay of the sampling signal caused by the sampling member, taking into account the sampling signal of a preceding sampling period;
- and means for compensation of the phase delay of the sampling signal caused by the anti-aliasing filter, taking into account a filter time constant (TF) of the anti-aliasing filter, the sampling period (TT) of the sampling member, and the sampling signal of preceding sampling period.
Dependencies are inferred from the claim text.