SYNTHESIS OF FAIL OPERATIONAL HEADING INFORMATION (COURSE DATUM) FROM NONFAIL OPERATIONAL INPUT SIGNALS

摘要

Synthesis of fail operational plural output signals from input signals, insufficiently redundant to be fail operational in themselves, is accomplished by referencing plural integrators to the input signal and subsequently integrating down the references by application to the integrators, in lieu of the input signals, respective ones of a plurality of further input signals each of which is a measure of the rate of change of the referencing inputs, and of themselves sufficiently redundant to provide fail operational control in subsequent control means to which a logically best one of the output signals is applied.