Importance

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Abstract

An improved linearized flow control valve assembly maintains a substantially consistent linear relationship between the input driving device (e.g., motor shaft) and the throughput of fluid through a valved passageway and the angle of the valve member within the passageway. Additionally, an improved linearized flow control valve assembly includes a valve position detector and signal generator which determines the position of the valve member and produces a signal representative of said position. The valve position detector and signal generator is adapted to interface with the linearizing mechanism of the valve assembly and generate the output signal as a function of a linear displacement associated with the linearizing mechanism. To compensate out trail-off or changes in linearity associated with the linearize flow control valve assembly at valve member angles associated with the open position of the valve member, a cam slot within a rack of the linearizing mechanism is curved according as a function of said non-linearity.

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First Claim