| 摘要 |
The circuit arrangement for determining an angle ( alpha ) from analog signals (C,S) proportional to the sine and cosine of the angle ( alpha ) to be determined includes a circuit device for multiplying an analog signal (S) with a digital value (Cs) for obtaining a first product value (S*Cs), the digital value (Cs) being proportional to the cosine of an estimated angle value ( alpha s) for the angle ( alpha ) to be determined; a circuit device for multiplying another analog signal (C) with another digital value (Ss) to obtain a second product value (C*Ss), the another digital value (Ss) being proportional to the sine of the estimated angle value ( alpha s) for the angle ( alpha ) to be determined; a circuit device for adding the first and second product values (S*Cs; C*Ss) to obtain a sum value (Su); a circuit device for equalizing proportionality factors of the one and/or the other digital value (Ss; Cs) so that the sum value (Su) formed is proportional to sin ( alpha - alpha s); and a circuit device for adjusting the sum value (Su) to zero so that the estimated angle value ( alpha s) corresponds to the angle ( alpha ) to be determined.
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