Non-trigonometric periodic function demonstration and image drawing device

Abstract

The invention discloses a non-triangular periodic function demonstration and image drawing device, which consists of a support, a path line guide plate, a bridge type support, a rotating guide rod, a drawing mechanism, rectangular sliding ways, a cylindrical surface track, a drawing board and a connection system, wherein the cylindrical surface track and the bridge type support are fixed to the path line guide plate to form a periodic guide device; the rotating guide rod forms a periodic rotation system according to the periodic guide device; the drawing mechanism, the rectangular sliding ways and the drawing board form a drawing device; the periodic rotation system and the drawing device are arranged on the support left and right; and the periodic rotation system and the drawing device form a movement entity by the connection system. The non-triangular periodic function demonstration and image drawing device has the advantages that the operation is simple; the demonstration of a periodic function can be completed and an image can be drawn by pushing a handle on the guide rod; the functions are complete; images of various continuous and incontinuous non-triangular periodic functions can be demonstrated and drawn by internal local fine adjustment; the cost is low; and a product can be assembled by simply processing industrial excess materials or waste materials in life.

Description

technical field [0001] The invention relates to a teaching instrument and an engineering drawing instrument, which is a device for converting periodic motion into a plurality of orthogonal composite motions, specifically a non-triangular periodic function demonstration and image that can visually demonstrate periodic functions and draw images Drawing device. Background technique [0002] With the development of my country's higher education and technological progress, teachers' teaching, student learning, engineering design and construction all need fast, convenient and multi-functional drawing instruments. Periodic functions are the most common and most widely used functions. They are the key content of secondary mathematics and the core content of university mathematics research (such as Fourier series). Among them, periodic functions in the form of non-trigonometric functions are complex in expression and widely used. By visually demonstrating the cycle process and drawi...

AI Technical Summary

Problems solved by technology

[0004] To sum up, there are the following deficiencies in the above-mentioned literature: the right-angle mapping relationship of non-triangular periodic functions cannot be expressed through the rotational motion of the independent variable, the drawn image is only a trigonometric function curve, and the images of periodic functions such as rectangular waves and triangular waves cannot be drawn. It cannot draw other forms of non-triangular periodic function images, especially not conducive to personal learning by students, and it is not easy to draw curves on a fixed plane or work site. The function is insufficient and the applicability is low

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