Control system for rotary air modulator

Details Control system for rotary air modulator Control system for rotary air modulator

1977-03-03

1978-06-20

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

Having plural energy outputs

60702, 60DIG2, 340 17R, F15B 1120

Patent

active

040954250

ABSTRACT:
A control system for providing precise speed control for a rotary air modulator, and particularly for providing synchronized speed control as between two or more rotary air modulators. A common reference frequency is used for controlling rotational speed of one or more rotary air modulators wherein each modulator deploys an individual feedback system responsive to the reference frequency input to provide precise rotational speed and angular position coordination and, therefore, synchronism of frequency and phase output as between two or more individual modulators. The individual feedback systems include feedback and summation circuitry which derives angular velocity correction, angular position correction and hydraulic pressure drive variation for thereafter correcting and maintaining precise speed control of the rotary drive system.

REFERENCES:
patent: 2742763 (1956-04-01), Cohen
patent: 3361949 (1968-01-01), Brown et al.
patent: 3701968 (1972-10-01), Broding
patent: 3792751 (1974-02-01), Fair

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