The purpose of chaotic pendulum experiment is to measure the phase space of objects, and record the changes of displacement angle and angular velocity in the process of chaos generation through the movement changes of metal bars, thus proving the sensitivity of chaos to initial conditions.
Chaos pendulum principle: the motion state of a motion system is determined by the initial conditions (the initial position and starting speed of the main pendulum and the auxiliary pendulum) when starting. The motion of a simple pendulum is easy to predict, because this big pendulum has three small pendulums connected, so its motion is more complicated. Each pendulum will affect the movement of other pendulums, thus making the whole movement chaotic and unpredictable.
Extended data:
Three principles of chaos theory:
1, energy always follows the path of least resistance.
2. There is always an invisible basic structure, which determines the path of least resistance.
This ubiquitous and usually invisible basic structure can not only be found, but also be changed.
Baidu encyclopedia-chaotic pendulum
Baidu Encyclopedia-Chaos Theory