Patent ID: 6752166
Filing Date: 2004-06-22
Classification: G05D,Y10T

Abstract:
A fluid flow control system, comprising:a fluid inlet to receive a flow of process fluid; a plurality of fluid outlets, the plurality of fluid outlets including a first fluid outlet and at least one second fluid outlet, the first fluid outlet providing a first predetermined portion of the flow of process fluid, and the at least one second fluid outlet providing a remaining portion of the flow of process fluid; a pressure transducer, to measure a pressure of the process fluid in the fluid inlet and provide a pressure signal indicative of the pressure of the process fluid; a first multiplier to receive the pressure signal and a first setpoint indicative of the first predetermined portion of the flow of process fluid to be provided by the first fluid outlet and multiply the pressure signal by the first setpoint to provide a first multiplied setpoint; a first flow controller, fluidly coupled to the fluid inlet and the first fluid outlet, to receive the first multiplied setpoint and provide the first predetermined portion of the flow of process fluid to the first fluid outlet based upon the first multiplied setpoint; a second multiplier to receive the pressure signal and a second setpoint indicative of the remaining portion of the flow of process fluid to be provided by the at least one second fluid outlet and multiply the pressure signal by the second setpoint to provide a second multiplied setpoint; and a second flow controller, fluidly coupled to the fluid inlet and the at least one second fluid outlet, to receive the second multiplied setpoint and provide the remaining portion of the flow of process fluid to the at least one second fluid outlet based upon the second multiplied setpoint.