| 摘要 |
An actuator assembly including an actuator housing assembly (202) having a linear drive mechanism disposed at least partially therein. A linear variable differential transducer (LVDT) (204) is coupled to the linear drive mechanism (208) and configured to eliminate rotation of the linear drive mechanism and provide linear positioning of the linear drive mechanism. A valve shaft (112) is coupled to the linear drive mechanism and in substantially linear alignment with the linear drive mechanism. A rotational coupler (223), in the form of a helical groove (224) and reciprocating guide member (226), is formed to couple the linear drive mechanism (208) to the valve shaft (112). The valve shaft (112) is configured to allow for the linear displacement therein of the linear drive mechanism (208) and thereby output a rotation moment via the rotational coupler (223) to the valve shaft (112).
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