Inverted pendulum is a precision equipment controlled electro-mechanically by motor and operating program to be stabilized, which is the typical example of the unstable system that can show visually in computer display the change of physical state and...
Inverted pendulum is a precision equipment controlled electro-mechanically by motor and operating program to be stabilized, which is the typical example of the unstable system that can show visually in computer display the change of physical state and the control strategy. Generally, the inverted pendulum consists of cart, pendulum, potentiometer, and DC motor.
The equipment used in the thesis is a special type, which is fixed in the bottom without cart, and consists of sliding rod and pendulum rod. The pendulum rod position is controlled by varying the horizontal position of sliding rod.
In this thesis, the pole placement control and LQR control are applied to the inverted pendulum, to stabilize the unstable plant, and the results are obtained by experiments. The pole placement method that control the angle of sliding rod shows that the response time of system is improved. The LQR control action shows that the overshoot of the system response is reduced and the response of system is faster. The more stable response is obtained by reducing noise and the fluctuation in high frequency region by implementing the low-pass filter in this experiment.