Patent ID: 6766260
Filing Date: 2004-07-20
Classification: G01F,Y10T

Abstract:
A system for dividing a single mass flow into two or mare secondary flows of desired ratios, comprising:A) an inlet adapted to receive the single mass flow; B) at least two secondary flow lines connected to the inlet, each flow line including, a flow meter measuring flow through the flow line and providing a signal indicative of the measured flow, and a valve controlling flow through the flow line based upon a signal indicative of desired flow rate; C) a user interface adapted ta receive at least one desired ratio of flow; and D) a controller connected to the flow meters, the valves, and the user interface, and programmed to, receive the desired ratio of flow through the user interface, receive the signals indicative of measured flow from the flow meters, calculate an actual ratio of flow through the flow lines based upon the measured flow, compare the actual ratio to the desired ratio, calculate the desired flow through at least one of the flow lines if the actual ratio is unequal to the desired ratio, and provide a signal indicative of the desired flow to at least one of the valves, wherein the desired flow is substantially equal to Kp(&agr;âˆ’&agr;sp)+Kiâˆ«(&agr;âˆ’&agr;sp)dt, wherein Kp is a proportional gain, Ki is an integral gain, &agr; is the actual flow ratio, and &agr;sp is the desired flow ratio.