Article

Article title DYNAMIC ERROR OF DEVICES OF RESTORATION OF SIGNALS IN CONTROL SYSTEMS
Authors L.K. Samoilov, S.А. Kirakosjan
Section SECTION III. MODELLING OF COMPLEX SYSTEMS
Month, Year 05, 2014 @en
Index UDC 621.82: 621.397
DOI
Abstract Dynamic errors of the restored signal as the sum of private derivatives of integral of a signal on exit DAC during digitization are considered. It is shown, that the error is defined: change of a difference of duration of fronts of impulses of management DAC; change of a difference of delays of a signal in DAC; dependence of a difference of delays of a signal in DAC from size of the restored signal; a difference of amplitudes of forward and back fronts of impulses on exit DAC. The signal delay in the restoration device is the reason of occurrence of an additional error which depends on speed of change of a processed signal. There is an optimum size of duration of an impulse on exit DAC when the total dynamic error will have the minimum size. Reduction of dynamic errors to level of the static demands maintenance of value of a deviation of a difference of times of delays of forward and back fronts of an impulse on exit DAC on 4–6 usages smaller Т, that imposes additional restrictions on speed of the device of restoration. Redigitization of a digital signal on an input of the device of restoration reduces dynamic errors of the device of restoration, but considerably raises requirements to speed of work DAC and stability of its time parametres.

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Keywords Restoration of signals; dynamic errors of restoration; a signal delay; control systems; redigitization
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