专利名称：METHOD FOR ELECTRONIC
COMPENSATION OF ELECTRICAL
DISTURBANCE SIGNALS AND USE THEREOF
发明人：SÖDERKVIST, Jan申请号：EP96900748.3申请日：19960104公开号：EP0803048B1公开日：20010822
摘要：The invention relates to a system for the electronic compensation of electricaldisturbance signals of the type caused impedances, especially stray capacitances (Cstray),and in which the disturbance signals appear superposed upon the measuring signal whichit to be detected (the normal signal) in an electronic signal-processing system in which itcan be difficult easily to separate the disturbance signals from the normal signal. Thesystem contains equipment for superposing one or more electrical signals (13) of knowncharacteristics upon the normal signal and for measuring (detecting) the leakage of thesuperposed signals as a result of the disturbing impedances and to convert the
measured result into information which is interpretable by the environment. The suppliedsignals (13) are superposed before the region or the points in the system from which thedominant disturbances originate, and their frequencies (fmeas(j)) are chosen so that theydo not coincide with important frequencies (f¿o?(k)) of the system. The information (18)obtained via the superposed signals (13) concerning the size of the disturbingimpedances is used to compensate actively and continuously for the disturbingimpendances via a control loop/control loops, so that the effect of these disturbing
impedances upon the measuring signal is minimized.
申请人：COLIBRI PRO DEV AB
地址：SE
国籍：SE
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