friction effect

Polishing particle will vibrate at vertical direction, while at tangential direction, the movement of particle will be rocking or rolling as the case may be. During the process, strong friction effect will exist between particle and workpiece.

磨粒在工件表面垂直振动，水平方向做翻滚或摇摆运动，运动过程中磨粒与工件问将出现很强的摩擦效应。

Simulation results show that the controller proposed in this paper has excellent control precise and robustness, and can suppress reaction wheel low-speed friction effect effectively.

仿真结果表明该控制器控制精度高，能有效抑制飞轮低速摩擦等对姿态的扰动。

The paper compares properties between conventional proportional-derivative ( PD) controller, general PD type fuzzy logic controller and non-linear fuzzy controller in the same position control system with the high non-linear friction effect.

对常规控制器、一般模糊控制器以及针对具体系统设计的非线性模糊控制器，在同一个具有非线性摩擦力影响的位置跟踪系统中进行了性能对比。