open-loop control systems

The friction drive mechanism moves well even when driven at high frequency and with long strokes, so it can be used with open-loop control systems for micro displacement.

进给速度可通过改变驱动脉冲的频率调节，机构在高频驱动大位移动作时亦表现出准确的步进特性，可用于小型机电系统的开环进给驱动。

However, this advantage is more than outweighed by the disadvantages of open-loop control and the inherent advantages of feedback systems.

然而，这一优点比不上开环控制的缺点和反馈系统的固有优点。

An internal model control strategy is proposed to a class of open loop stable nonlinear systems described by fuzzy neural networks.

针对一类开环稳定的非线性系统，提出了一种基于模糊神经网络的非线性内模控制方案。