Method and apparatus for operating turbo compressor using analog

Details Method and apparatus for operating turbo compressor using analog Method and apparatus for operating turbo compressor using analog

1984-12-18

1987-04-07

Gruber, Felix D.

Boots, shoes, and leggings

415 1, 415 17, F04D 2702, G05B 1302, G05D 1620

Patent

active

046565892

ABSTRACT:
A method and arrangement for controlling the operation of turbo compressors, particularly those of high capacity, utilizes flow rate and pressure values for an analog controller as well as a computing circuit to optimize the operation of the compressor. The compressor is assumed to have a characteristic basic linear blowoff line and an optimum non-linear blowoff line on its pressure/flow curve. The calculating or computing circuit computes an error signal representing a difference between the basic and optimum blowoff line at an operating pressure and applies the signal to the analog controller which controls the compressor to its optimum extent. An analog system connected to the controller maintains control at least according to the basic blowoff line if the computing circuit fails.

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patent: 4464720 (1984-08-01), Agarwal
patent: 4560319 (1985-12-01), Blotenberg

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