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A sine wave synthesis rectangular wave demonstration instrument

A sine wave and rectangular wave technology, applied in the field of sine wave synthesis rectangular wave demonstrator, can solve the problems of abstraction that is difficult to understand and cannot be separated from waveforms, etc.

Active Publication Date: 2021-01-29
XI AN JIAOTONG UNIV
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  • Application Information

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Problems solved by technology

[0002] In daily life, whether it is visible mechanical vibration or invisible communication equipment, the concept of waveform is inseparable, and whether it is mechanical vibration or the concept of wave in communication, harmonic analysis is required. In terms of advanced mathematics, vibration mechanics, electronic information and other subjects, the biggest problem encountered in the process of learning Fourier transform is that it is too abstract and difficult to understand

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  • A sine wave synthesis rectangular wave demonstration instrument
  • A sine wave synthesis rectangular wave demonstration instrument
  • A sine wave synthesis rectangular wave demonstration instrument

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Embodiment Construction

[0017] The implementation of the present invention will be described in detail below in conjunction with the drawings and examples.

[0018] The present invention is based on the following principles:

[0019] Vibration that can be represented by a functional relationship can be divided into periodic vibration and non-periodic vibration according to the form of motion. The simplest periodic vibration is simple harmonic vibration, and general periodic vibration can be expressed as a series of simple vibrations with the help of Fourier series. The superposition of harmonic vibrations, therefore, the properties of complex periodic vibrations can be studied through simple simple harmonic vibrations.

[0020] The sine wave synthesis rectangular wave demonstration instrument of the present invention mainly includes a sine wave superimposing mechanism, a drawing mechanism and a paper feeding mechanism in terms of functions, and realizes the superposition of circular motion through th...

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Abstract

A sine wave synthesized rectangular wave demonstration instrument, including a sine wave superposition mechanism, a drawing mechanism and a paper feeding mechanism. The main purpose of the present invention is to mechanically display the Fourier expansion of the rectangular wave, taking into account the mechanical structure The complexity, feasibility and approximation of the expansion to the original function, using the projection of uniform circular motion on a certain plane to achieve the approximate results of the first three terms of the expansion, and finally draw an approximate rectangular wave.

Description

technical field [0001] The invention belongs to the technical field of machinery, and in particular relates to a sine wave synthetic rectangular wave demonstrator for gear transmission of a fixed-axis gear train and a planetary gear train. Background technique [0002] In daily life, whether it is visible mechanical vibration or invisible communication equipment, the concept of waveform is inseparable, and whether it is mechanical vibration or the concept of wave in communication, harmonic analysis is required. In terms of advanced mathematics, vibration mechanics, electronic information and other subjects, the biggest problem encountered in the process of learning Fourier transform is that it is too abstract and difficult to understand. Contents of the invention [0003] In order to overcome the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a sine wave synthesis rectangular wave demonstration instrument, which can display...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09B23/06
CPCG09B23/06
Inventor 魏衍举杨亚晶刘建超刘圣华
Owner XI AN JIAOTONG UNIV