Patent ID: 6107616
Filing Date: 2000-08-22
Classification: G01C,G01P

Abstract:
A system for protecting a pendulous oscillating gyroscopic accelerometer (POGA) from power failure interruption (PFI) events, the POGA having a servo driven member (SDM), rotor driven member (RDM), and torque summing member (TSM), wherein said POGA is a part of an accelerometer system of a guidance system which detects such events and communicates them to said accelerometer system, in which at least one of said accelerometer system and said guidance system stores an acceleration value, wherein said POGA includes means for driving said SDM, means for driving said RDM, and means for detecting TSM angular deflection, said system for protecting comprising:means for storing the acceleration value just prior to a PFI event;means for shutting down during the PFI event said means for driving said SDM and said means for driving said RDM;means for turning on, after the PFI event, said means for driving said SDM and said means for driving said RDM;means, responsive to said means for detecting TSM angular deflection, for determining, after the PFI event, the velocity change during the PFI event; andmeans, responsive to said determined velocity change, and to said stored acceleration, for determining the velocity after the PFI event.