Control system software execution during fault detection

摘要

An example method for uninterrupted execution of control software in an aircraft control system includes creating a plurality of static data copies. A first parity bit is determined for each of the plurality of static data copies. A second parity bit is determined for a first static data copy. A parity fault is detected in the first static data copy if the first parity bit does not match the second parity bit. The system switches to read a second static data copy in response to detecting a parity fault in the first static data copy.

主权项

1. A method for uninterrupted execution of control software in an aircraft control system comprising:
creating a plurality of static data copies each having identical bits of data; determining a first parity bit for each of the plurality of static data copies; generating the first parity bit using a parity generator to employ odd parity, wherein the first parity bit is configured to be set such that each byte of a static data copy will include an odd number of bits having the value 1; determining a second parity bit for a first static data copy; detecting a parity fault in the first static data copy if the first parity bit does not match the second parity bit; and switching to read a second static data copy in response to detecting a parity fault in the first static data copy.