Control fault detection for machine recovery and diagnostics pri

Details Control fault detection for machine recovery and diagnostics pri Control fault detection for machine recovery and diagnostics pri

1982-09-21

1985-04-30

Atkinson, Charles E.

Excavating

364200, 371 20, G06F 1100, G01R 3128

Patent

active

045148465

ABSTRACT:
The present invention is monitoring the control, in particular, software crashes in a multiprocessor machine control system to prevent machine malfunctions. Benchmarks or key operations tracked include, for example, monitoring that the number of tasks to be completed by the control is not beyond the capacity of the control to respond. These recorded benchmarks enable one or both of two paths of progressively more complex analysis. In particular, there is a diagnostic path that leads first to the isolation of a particular control element in a multi-element control that contains a fault and then to a more comprehensive recording of the fault history for each individual control element. There is also a path for maintaining machine operation. In this path, a first level of response is to merely reset the various control elements. Progressively more comprehensive responses include isolating a fault in an individual control element to maintain machine operation and the full recovery of the job in progress after a software crash.

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