Title:
【発明の名称】クリティカル・システムのためのフェイル・セーフ・プロセスの実行、監視、および出力の制御のためのシステムおよび方法
Document Type and Number:
Japanese Patent JP2003517668
Kind Code:
A
Abstract:
Methods and systems for fail-safe process execution, monitoring and output control for critical systems operating on an open bus architecture with multiple, independent partitions on a single processor is presented. The control system state variables and their status of critical systems, within the control laws and mode logic, are monitored for process completion and health, and shut down if necessary. The embodiments provide for a dual path for shut down of, for example, flight critical systems so that the failure of one partitioned module does not affect the operation of the remaining partitioned modules. One path involves the CPM and IOM determination of command/response health. If persistent faults are detected, then either the DSP monitoring or the CPM performance monitoring results in a discrete signal being sent to the H-bridge disable to shutdown the current output. The second path is CPM controlled via a separate discrete signal on the input/output controller to the flight critical system shut-off valve. By implementing these separate paths, critical systems in one partition cannot be defeated by a single failure in another partition.
Inventors:
Banning, Ronald Ray
Goosen, Emrey Rain
Goosen, Emrey Rain
Application Number:
JP2001545909A
Publication Date:
May 27, 2003
Filing Date:
December 14, 2000
Export Citation:
Assignee:
Honeywell International Inc.
International Classes:
B64C13/00; G05B9/02; G05B9/03; G05B23/02; (IPC1-7): G05B9/02; B64C13/00; G05B23/02
Attorney, Agent or Firm:
Kazuo Shamoto (5 outside)