A chaotic pendulum device capable of continuous demonstration

Abstract

The invention relates to a chaotic pendulum device capable of continuously demonstrating. The device comprises a bracket, a main rotating shaft and a first vane, wherein the main rotating shaft can rotate around the axis of the main rotating shaft; the first vane is fixed on the main rotating shaft and can synchronously rotate following the main rotating shaft; the main rotating shaft is arranged on the bracket through a bearing base; an auxiliary rotating shaft which is away from the main rotating shaft and is parallel to the main rotating shaft is fixedly arranged on the first vane surface; a second vane capable of freely rotating around the auxiliary rotating shaft is arranged on the auxiliary rotating shaft; the device further comprises a position sensor and an electromagnetic driver for driving the first vane and the second vane to continuously swing. Through the chaotic pendulum device capable of continuously demonstrating, the visitor or learner can clearly view the chaotic phenomenon shown by the chaotic pendulum. When the demonstrating device is about to stop swinging, the position sensor and the electromagnetic driver are started to drive the first vane and the second vane to continuously swing, so that the visitor or learner can master the knowledge related to the chaotic phenomenon by long-term viewing.

Description

technical field [0001] The invention belongs to the field of popular science education or teaching, and in particular relates to a chaotic pendulum device capable of continuous demonstration. Background technique [0002] The certainty of a dynamical system is a mathematical concept, which means that the state of the system at any moment is determined by the initial state. Although the motion state at any future moment can be calculated according to the initial state data and motion laws of the motion, since the measurement of the initial state data cannot be completely accurate, errors in the predicted results are bound to occur, and even unpredictable. The predictability of motion is a physical concept. It is not contradictory that a movement can be unpredictable even if it is deterministic. The success of Newtonian mechanics, especially its success in predicting Neptune, has to a certain extent caused misunderstandings, equating certainty and predictability, thinking th...

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Problems solved by technology

[0004] In the teaching process, teachers usually draw chaotic mechanisms on the blackboard to try their best to describe the state of chaotic phenomena. However, due to the invisibility of chaos itself, it is difficult to teach intuitively.

There is an example of a simple chaotic pendulum mechanism in modern educational activities, most of which are two-stage mechanisms. This simplest mechanism has many shortcomings in practical activities. First, because the structure is too simple, it makes visitors or learners misunderstand, thinking that The chaotic pendulum is such a simple mechanism, thus ignoring the different chaotic pendulum mechanism in real life. Second, because the chaotic pendulum mechanism cannot continue to operate for a long time, visitors or learners cannot understand the chaotic phenomenon for a long time. continuous observation and, therefore, cannot be understood phenomenally

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