The LQR controller uses the pendulum control mode to keep the pendulum near the vertical up unstable state points and gives signals of car displacement tracking.
LQR控制器用于倒立摆的控制模式，保持摆锤稳定在竖直向上不稳定状态点附近，使小车位移跟踪给定信号。
2
A two-dimensional fuzzy controller using displacement as feedback variable is developed to control the cutting chatter.
并以颤振位移作为反馈变量，建立了基于二维模糊控制器的颤振控制系统。
3
According to the analysis, the displacement and velocity of the building structure can be chosen as the output feedback variables for the controller.