RU2000108802A - METHOD OF DIGITAL SIGNAL FILTRATION AND DIGITAL FILTER FOR IMPLEMENTING THIS METHOD - Google Patents

Claims (1)

1. A method of digital filtering of signals, including converting the input signal X to digital form X _i (i = 1, 2, 3...), Comparing the converted input signal X _i with the digital output signal X $\genfrac{}{}{0ex}{}{\text{f}}{\text{i}}$ by determining the difference signal ΔX _i = X _i -X $\genfrac{}{}{0ex}{}{\text{f}}{\text{i-1}}$ characterized in that the output digital signal X $\genfrac{}{}{0ex}{}{\text{f}}{\text{i}}$ form as the sum of the previous value of X $\genfrac{}{}{0ex}{}{\text{f}}{\text{i-1}}$ and an additional signal Δ _i , moreover, the additional signal Δ _{i is} chosen equal to a predetermined value Δ if ΔX _i ≥ Δ, minus Δ if ΔX _i ≤ -Δ, and zero if -Δ <ΔX _i <Δ.
2. A digital filter containing an analog-to-digital converter, the start input of which is connected to the output of the generator, characterized in that it additionally includes a digital comparator, a reversible counter, the first and second I elements, the outputs of which are connected respectively to the summing input and the subtracting input of the reverse counter, the first inputs of the first and second elements AND are connected to the ready output of the analog-to-digital converter, the output bus of which is connected to the first input bus A of the digital comparator, the second In front of the bus connected to the output line of the digital filter and the output line down counter, the output A> B of the digital comparator is connected to a second input of the first AND gate, the output A <B the digital comparator with a second input member I.