Method and apparatus for correction of a detected faulty actual valve of a signal affected by harmonic vibrations

摘要

An actual value (u.sub.ixRF) of a signal (i.sub.xRF) affected by harmonics may be corrected. A harmonic signal (u.sub.iF) superimposed on the signal (i.sub.xRF) is generated using a harmonic-free setting signal(u.sub.yR), a known pulse pattern (&agr;.sub.1, &agr;.sub.2, .. ., &agr;.sub.5) stored in the memory of a modulator, and an equivalent model of the control system. The mean value (u.sub.iF) of this harmonic signal (u.sub.iF) is determined by a second integrating actual value acquisition device. The mean value (u.sub.iF) is subtracted as a correction value from the actual value (u.sub.ixRF), which is affected by errors. In this way, an errorfree actual value (u.sub.ixR) is obtained for a signal (i. sub.xRF), the harmonics of which are not filtered out in the actual value determination by means of an integrating actual value acquisition device.