针对直接驱动阀阀芯摩擦力，论述了基于模型的摩擦力自适应补偿。
An adaptive friction compensation scheme for direct drive valve was proposed based on LuGre model.
该阀采用大行程的压电叠堆作为驱动元件，经杠杆放大后的位移直接驱动功率级滑阀。
The valve is driven directly by a large strake multilayer piezoelectric stack, its displacement actuates the power cascade spool after amplification by a lever mechanism.
阿住房型阀可安装于近执行机构，甚至直接到驱动器本身。
A housing-type valve can be installed close to the actuator or even directly into the actuator itself.
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