| 摘要 |
A bleed air balancing system includes a plurality of bleed air flow paths ( 12 ) each carrying bleed air from one of a plurality of gas turbine engines ( 10 ), each bleed air flow path ( 12 ) including a flow rate sensor ( 19 ), and a circuit ( 52, 200 ) outputting at least one flow rate setpoint based on flow rates measured by each of the flow rate sensors ( 19 ), wherein each of the plurality of bleed air flow paths ( 12 ) includes: a pressure regulating valve ( 16 ), a pressure sensor ( 18 ), and a controller ( 20 ) for controlling the position of the pressure regulating valve ( 16 ), the controller ( 20 ) including an output ( 26 ) connected to the pressure regulating valve ( 16 ), a pressure control loop ( 60 ) generating a pressure correction signal, and a flow control loop ( 62 ) generating a flow correction signal, wherein the controller ( 20 ) outputs a control signal ( 28 ) on the output ( 26 ) based on the pressure correction signal and the flow correction signal. A method of operating the system is also disclosed.
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