Microcomputer based system for the fail-safe control of an elect

Details Microcomputer based system for the fail-safe control of an elect Microcomputer based system for the fail-safe control of an elect

1997-09-24

1999-07-27

Heckler, Thomas M.

Electrical computers and digital processing systems: support

Clock control of data processing system, component, or data...

Inhibiting timing generator or component

G06F 104

Patent

active

059283661

ABSTRACT:
A microcomputer is capable of detecting an output failure by itself and stopping rotation of an electric motor that is controlled by the microcomputer when the rotational speed of the electric motor falls outside of a predetermined allowable range. A boundary value is established which represents an allowable minimum value for the rotational speed of an electric motor controlled according to an active duration of control pulses. A boundary value register compares a setting for the active duration, which is held in a comparison register, with a boundary value, and if a predetermined condition is satisfied, determines a failure and outputs a signal indicative of the failure. The outputting of control pulses to an electric motor is inhibited if the setting for the active duration, held in the comparison register, is of a value that would cause a failure.

REFERENCES:
Ein universeller digitaler Regler mit Mikrorechner; Regelungstechnische Praxis 10 1978); pp. 289-294.

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