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Formulation of a strategy for monitoring control integrity in critical digital control systems
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Belcastro, Celeste M. Kam, Moshe Fischl, Robert |
| Copyright Year | 1991 |
| Description | Advanced aircraft will require flight critical computer systems for stability augmentation as well as guidance and control that must perform reliably in adverse, as well as nominal, operating environments. Digital system upset is a functional error mode that can occur in electromagnetically harsh environments, involves no component damage, can occur simultaneously in all channels of a redundant control computer, and is software dependent. A strategy is presented for dynamic upset detection to be used in the evaluation of critical digital controllers during the design and/or validation phases of development. Critical controllers must be able to be used in adverse environments that result from disturbances caused by an electromagnetic source such as lightning, high intensity radiated field (HIRF), and nuclear electromagnetic pulses (NEMP). The upset detection strategy presented provides dynamic monitoring of a given control computer for degraded functional integrity that can result from redundancy management errors and control command calculation error that could occur in an electromagnetically harsh operating environment. The use is discussed of Kalman filtering, data fusion, and decision theory in monitoring a given digital controller for control calculation errors, redundancy management errors, and control effectiveness. |
| File Size | 945678 |
| Page Count | 18 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19920005857 |
| Archival Resource Key | ark:/13960/t5k983g3j |
| Language | English |
| Publisher Date | 1991-11-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Stability And Control Controllers Aircraft Stability Digital Systems Error Analysis Redundancy Single Event Upsets Electromagnetic Pulses Stability Augmentation Airborne/spaceborne Computers Data Processing Flight Control Decision Theory Lightning Controllability Kalman Filters Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
