Three-leaf chaotic pendulum demonstration device

Abstract

The invention relates to a three-blade chaotic pendulum demonstration device, which comprises a support frame, a main rotating shaft, a first rotating blade and a second rotating blade, wherein the main rotating shaft rotates around the self axial line; the first rotating blade is fixed on the main rotating shaft and does synchronous rotation along with the main rotating shaft; the second rotating blade is arranged on the main rotating shaft and does free rotation around the main rotating shaft; the main rotating shaft is arranged on the support frame through a bearing seat; the blade surface of the second rotating blade is fixedly provided with an auxiliary rotating shaft which leaves far away from the main rotating shaft and is arranged in parallel to the main rotating shaft; a third rotating blade capable of freely rotating around the auxiliary rotating shaft is arranged on the auxiliary rotating shaft. When the main rotating shaft is instantaneously driven to rotate, the rotating directions of the first rotating blade, the second rotating blade and the third rotating blade are irregular chaotic pendulum; a visitor or learner can clearly see the chaotic phenomenon shown by a chaotic pendulum mechanism; the chaotic phenomenon can be more vividly sensed; the know and the understand of people on a chaotic mechanism are enriched.

Description

technical field [0001] The invention belongs to the field of popular science education or teaching, and in particular relates to a three-leaf chaotic pendulum demonstration device. 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 that determin...

AI Technical Summary

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. Because the structure is too simple, visitors or learners may misunderstand that the chaotic pendulum is It is such a simple mechanism, thus ignoring the chaotic pendulum mechanism that is different from it in real life

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