A method for extracting a differential signal and a differentiator

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

Active Publication Date: 2018-12-25
CHINA AVIATION MARINE EQUIP YANTAI TECH CO LTD
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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 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

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  • A method for extracting a differential signal and a differentiator
  • A method for extracting a differential signal and a differentiator
  • A method for extracting a differential signal and a differentiator

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[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

A method for extracting a differential signal and a differentiator, wherein the method includes: step 1, calculating a first integral signal z0 according to an output signal u of the differentiator, and calculating an error signal based on the first integral signal z0 and an input signal; step 2, Calculating a second integral signal according to the error signal; step 3, constructing a nonlinear softening model according to the second integral signal and the error signal, and calculating a differential signal of the input signal according to the nonlinear softening model. According to the computer construction error and its integral, the method can use the nonlinear softening model to realize the extraction of the approximate differential of the input signal. Compared with the existing differential signal extraction method, the method not only has lower implementation cost, but also has higher precision of the extracted differential signal.

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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Patent Type & Authority Patents(China)
IPC IPC(8): G06F7/64
CPCG06F7/64
Inventor 于波
Owner CHINA AVIATION MARINE EQUIP YANTAI TECH CO LTD
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