An adaptive friction compensation scheme for directdrivevalve was proposed based on LuGre model.
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。
2
The device by the human operator launches, such as through the cone-shaped gear reducer drive, directdrivevalve stem up and down movement of the valve gate.
本装置由人力操作手轮，通过锥形齿轮等减速传动，直接驱动阀门阀杆上下移动，启闭阀门。
3
This paper develops a direct-drive electrohydraulic servo valve of a completely new structure.