FLOW CONTROL VALVE ASSEMBLY

摘要

An improved linearized flow control valve assembly (100) maintains a substantially consistent linear relationship between the input driving device (e.g., motor shaft (12)) and the throughput of fluid through a valved passageway (9) and the angle of the valve member (4) within the passageway (9). Additionally, an improved linearized flow control valve assembly (100) includes a valve position detector (53) and signal generator (50) which determines the position of the valve member (4) and produces a signal representative of the position. The valve position detector (53) and signal generator (50) are adapted to interface with the linearizing mechanism (6') of the valve assembly (100) and generate the output signal as a function of a linear displacement associated with the linearizing mechanism (6'). To compensate out trail-off or changes in linearity associated with the linearized flow control valve assembly (100) at valve member angles associated with the open position of the valve member (4), a cam slot (6a) within a rack of the linearizing mechanism (6') is curved according to a function of said non-linearity.