Diagnostic apparatus

Details Diagnostic apparatus Diagnostic apparatus

1987-03-24

1989-09-05

Dobeck, Benjamin

Electricity: motive power systems

Positional servo systems

With protective or reliability increasing features

31856814, 31856824, G05B 1942

Patent

active

048642037

ABSTRACT:
A diagnostic apparatus which diagnoses a failure of the machine by comparing a relation between the displacement amount of a varible for making the variable coincide with a target value while the machine is normally operated and the response time required thereof with that while the machine is actually operated. Accordingly the apparatus can diagnose the failure based on transient response while the machine is actually operated, so that early detection of the failure is possible without additional measures.

REFERENCES:
patent: 4150326 (1979-04-01), Engelberger et al.
patent: 4456960 (1984-06-01), Wakai
patent: 4471219 (1984-09-01), Inaba et al.
patent: 4490660 (1984-12-01), Tsuchihashi
patent: 4585981 (1986-04-01), Zintler
patent: 4718078 (1988-01-01), Bleidorn et al.

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