To suppress the horizontal vibrations of a high-speed elevator, we develop its active hydraulicguide roller.
针对高速电梯的水平振动问题，开发了一种电梯液压主动导靴。
2
After introducing its working principles, we establish the mathematical models of the active hydraulicguide roller and the elevator cabin and design their fuzzy logic controller.
在介绍其工作原理的基础上，给出了液压主动导靴以及电梯轿厢的数学模型，并设计了模糊控制器。
3
The paper a detail analysis on the fault occurred in the hydraulicguide system of WLY202-CW excavator. And fault treatment procedure and methods made on base of the analysis are also introduced.