Method for triggering a final control element

Details Method for triggering a final control element Method for triggering a final control element

1996-07-18

1998-08-18

Sircus, Brian

Electricity: motive power systems

Positional servo systems

Pulse-width modulated power input to motor

318811, 388811, G05B 1128

Patent

active

057962308

ABSTRACT:
A method for triggering or controlling a final control element uses a pulse width modulated signal. A sequence of the pulse width modulated signal is fixed by a predetermined time raster. After a predetermined number of standard pulses, one standard pulse is emitted and one long pulse follows that is twice as long as one standard pulse. In this way, seizing of the final control element is reliably prevented.

REFERENCES:
patent: 4542329 (1985-09-01), Xuan
patent: 4550279 (1985-10-01), Klein
patent: 5247235 (1993-09-01), Tu et al.

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