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Non-linear function generator, function transformer and general nonlinear corrector

A nonlinear function and generator technology, applied in the direction of digital function generators, etc., can solve the problems of difficulty in adjusting compensation parameters

Inactive Publication Date: 2010-10-20
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a non-linear function generator realized by an analog circuit, a function converter with adjustable input and output ratios, three types of non-linear correctors, a general non-linear corrector with zero adjustment, and a high-input Impedance high-resistance non-linear corrector and high-resistance general non-linear corrector solve the difficult problem of compensation parameter adjustment caused by the mutual coupling effect of compensation amplitude adjustment and compensation range (range) adjustment during nonlinear compensation

Method used

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  • Non-linear function generator, function transformer and general nonlinear corrector
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  • Non-linear function generator, function transformer and general nonlinear corrector

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Embodiment 1

[0097] The nonlinear function generator has an input terminal un and an output terminal vn. According to different structures, there are simple single-valued nonlinear function generators, synthetic single-valued nonlinear function generators, and reversed-line single-valued nonlinear function generators. Function generator and in-phase zigzag type single-valued nonlinear function generator, anti-phase triangular wave synthesis type periodic nonlinear function generator and in-phase triangular wave synthesis type periodic nonlinear function generator, anti-phase sine wave synthesis type periodic nonlinear function generator Eight types of periodic nonlinear function generators with in-phase sine wave synthesis:

[0098] Simple single-valued nonlinear function generator (such as figure 2 As shown) is composed of operational amplifier A11, potentiometer Rp11, nonlinear element N112, and resistors R110~R113. The non-inverting input terminal of operational amplifier A11 is connec...

Embodiment 2

[0151] Function transformers (such as Figure 18As shown), there is an input terminal us and an output terminal vs. The function converter is mainly composed of an input gain controller, a nonlinear function generator, and an output gain controller. The input gain controller and the output gain controller adopt adjustable gain The amplifier, the gain-adjustable amplifier has an input terminal and an output terminal, the input terminal ua1 of the input gain controller is connected to the input terminal us of the function converter, and the output terminal va1 of the input gain controller is connected to the input terminal of the nonlinear function generator un, the output terminal vn of the nonlinear function generator is connected to the input terminal ua2 of the output gain controller, and the output terminal va2 of the output gain controller is connected to the output terminal vs of the function converter.

[0152] The gain-adjustable amplifier is usually obtained by replaci...

Embodiment 3

[0155] The bipolar gain-adjustable amplifier has an input terminal ua and an output terminal va. According to the difference in structure and function, there are voltage-type bipolar gain-adjustable amplifiers, simple bipolar gain-adjustable amplifiers, and current-type bipolar gain-adjustable amplifiers. Gain adjustable amplifier, multiplication bipolar gain adjustable amplifier, uniformly adjusted bipolar gain adjustable amplifier, split adjustable bipolar gain adjustable amplifier in six forms:

[0156] Voltage-mode bipolar gain-adjustable amplifiers (such as Figure 21a As shown) is composed of operational amplifier A2, potentiometer Rp2, and resistors R20~R24. The non-inverting input terminal of operational amplifier A2 is connected to the sliding end of potentiometer Rp2 through resistor R20, and the two fixed ends of potentiometer Rp2 are bipolar. The input terminal ua of the gain-adjustable amplifier and the other end are grounded, the inverting input terminal of the o...

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Abstract

The invention relates to a nonlinear function generator, a function transformer and a general nonlinear corrector, belonging to the technical fields of signal transformation and automatic control and measurement. The nonlinear function generator has the following types: an easy type and a synthetic type, inverted and inphase broken line types, inverted and inphase triangular wave synthesis types and a sine-wave synthesis type, and the like. The function transformer comprises the nonlinear function generator and an input and output gain controller which adopts a bipolar adjustable-gain amplifier, the nonlinear corrector has three types, i.e. a direct feed type, a feedback type and a combined type and comprises a weighted combiner, the function transformer and an output synthesizer, the general nonlinear corrector comprises a zero-bit adjustment circuit and the nonlinear corrector, and a (general) nonlinear corrector of a high impedance type adopts the (general) nonlinear corrector of a pre-voltage follower.

Description

technical field [0001] The invention relates to a nonlinear function generator, a function converter and a general nonlinear corrector, belonging to the technical field of signal conversion, automatic control and measurement. Background technique [0002] Linearity is a special case of nonlinearity. Nonlinearity is more universal. Compared with linearity, nonlinearity is more diverse, colorful, and complex. Function transformation is nonlinear function transformation, usually in the form of single-valued function transformation and periodic function transformation. The function converter is a converter whose transmission characteristic (or transfer function) is a nonlinear function. The nonlinear functions generated by the function converter are theoretically infinitely diverse, but there are not many devices that can generate nonlinear characteristics. How to use the current It is very meaningful that some nonlinear devices generate various nonlinear functions through oper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/02
Inventor 朱明陈觉晓张金龙叶明司霞
Owner SHANGHAI UNIV
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