System controls

Details System controls System controls

G - Physics

05

D

G05D 3/14 (2006.01) F04B 49/06 (2006.01) F04B 49/08 (2006.01) F04B 49/10 (2006.01)

Patent

CA 2078046

ABSTRACT System Controls A system comprising a secondary mover such as an hydraulic pump driven by a prime mover such as a motor powered, in use, by an alternating current (AC) electrical supply, whereby the operation of the secondary mover is affected by any frequency variation in a substantially constant voltage AC supply. The system further comprises adjustment means in use powered by the same AC supply as the prime mover, having inherently substantially the same operating characteristics as the prime mover, being coupled to the secondary mover and operable to adjust the operating range thereof in accordance with variations in the frequency of the AC supply.

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