| 主权项 |
1. A product comprising:
an actuator and valve portion; at least one housing for containing and supporting the actuator and valve portion;
the housing including a first port for receiving a fluid, and a second port for delivering the fluid; a valve seat disposed between the first port and second port; a valve member coaxial with the valve seat for controlling flow through the valve seat; a valve stem having a longitudinal axis and supported in the housing for providing for axial movement; the valve stem having a first end attached to the valve member, a stem link operably connected to a second end of the valve stem, and moveable with the valve stem and valve member; a position sensor including a sensing circuit and sensor element; the sensor element providing a parameter that is measured by the sensing circuit and the sensing circuit providing a position sensor parameter indicating position; an actuator portion including a motor having a rotatable shaft and pinion gear; a cam-gear supported in the housing and having a central axis of rotation and; including an integrated cam portion formed about the central axis of rotation, the motor being constructed and arranged to rotate the cam-gear and integrated cam portion so that the integrated cam portion operably transmits a force to the stem link and the valve stem, causing the stem link, the valve stem, and valve member to move and; wherein the sensor element is attached to the stem link and; the position sensor circuit senses a parameter of the sensor element and; the sensor circuit provides a sensor output parameter that indicates the actual position of the valve member. |
