Method for extracting differential signals and differentiator

A differential signal and extraction method technology, applied in the field of communication and control, can solve the problems of difficult and accurate measurement of spacecraft differential signals, difficult to accurately measure, expensive professional instruments, etc., and achieve the effect of low cost and high precision

Active Publication Date: 2017-01-11
CHINA AVIATION MARINE EQUIP YANTAI TECH CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

[0002] In the field of spacecraft control, the differential quantities of some signals are difficult to measure or difficult to measure accurately, and if the differential quantities of these signals need to be accurately measured, expensive professional instruments are required
For example, on a hypersonic spacecraft, a gyroscope can be used to m...

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  • Method for extracting differential signals and differentiator
  • Method for extracting differential signals and differentiator
  • Method for extracting differential signals and differentiator

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Embodiment Construction

[0042] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.

[0043] Also, in the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without the specific details or in the particular manner described.

[0044] In addition, the steps shown in the flow dia...

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Abstract

Provided are a method for extracting differential signals and a differentiator. The method comprises a first step of calculating a first integral signal z0 according to an output signal u of the differentiator, and calculating an error signal according to the first integral signal z0 and an input signal; a second step of calculating a second integral signal according to the error signal; a third step of constructing a nonlinear diffusion model according to the second integral signal and the error signal, and calculating a differential signal of the input signal according to the nonlinear diffusion model. According to the method, extraction of the input signal approximate differential is achieved by adopting the nonlinear diffusion model according to a computer construction error and an integral thereof. Compared with an existing differential signal extraction method, according to the method, not only is the implementation cost lower, but also the precision of the differential signals obtained by extraction is also higher.

Description

technical field [0001] The invention relates to the technical field of communication and control, in particular to a method for extracting a differential signal. Background technique [0002] In the field of spacecraft control, the differential quantities of some signals are difficult to measure or difficult to measure accurately, and expensive professional instruments are required to accurately measure the differential quantities of these signals. For example, on a hypersonic spacecraft, a gyroscope can be used to measure the attitude angle of the spacecraft. At the same time, in the design of the controller of the spacecraft, it is often necessary to increase the damping of the system according to the differential signal of the spacecraft’s angle of attack , while the differential signal of the spacecraft angle of attack is often difficult to measure accurately. [0003] Therefore, there is an urgent need for a method that can simply and accurately extract the differentia...

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Application Information

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IPC IPC(8): G06F7/64
CPCG06F7/64
Inventor 于进勇
Owner CHINA AVIATION MARINE EQUIP YANTAI TECH CO LTD
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