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A Time Delay Estimation Method Based on Adaptive Internal Model Controller

An internal model controller and time delay technology, applied in adaptive control, general control systems, control/regulation systems, etc., can solve the difficulty of online time delay estimation of uncertain periodic signals, the uncertainty of the frequency and phase of input signals, etc. problems, to achieve real-time online estimation and meet the measurement requirements

Active Publication Date: 2022-05-10
HEFEI UNIV OF TECH
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Problems solved by technology

In such applications, the uncertainty of input signal frequency, amplitude, and phase size, and the real-time nature of time delay estimation make it difficult to estimate online time delay for uncertain periodic signals

Method used

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  • A Time Delay Estimation Method Based on Adaptive Internal Model Controller
  • A Time Delay Estimation Method Based on Adaptive Internal Model Controller
  • A Time Delay Estimation Method Based on Adaptive Internal Model Controller

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Embodiment Construction

[0052] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0053] Depend on figure 1 As shown, the adaptive notch time delay estimation system based on the time delay estimation method of the present invention includes: an adaptive internal model controller for frequency estimation, and a time delay estimation model connected in series with the adaptive internal model controller .

[0054] A kind of time delay estimation method based on adaptive internal model controller of the present invention, comprises the follow...

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Abstract

The invention discloses a time delay estimation method based on an adaptive internal model controller. Based on the model of the adaptive internal model controller, the state equation of the adaptive internal model controller is obtained; according to the frequency update of the adaptive internal model controller Equation, estimate the frequency estimate of the uncertain periodic input signal and the steady-state output of the adaptive internal model controller; according to the uncertain periodic delay signal u b (t) and the delay signal estimate to obtain the cost function, and derive the cost function to obtain the adaptive update equation of the time delay estimate τ(t); the steady-state output of the adaptive internal model controller is used as the input of the adaptive time delay update equation , to obtain the convergence point of system time delay estimation, and realize real-time online estimation of time delay.

Description

technical field [0001] The invention relates to the technical field of random signal measurement, in particular to a time delay estimation method based on an adaptive internal model controller. Background technique [0002] The research on Time Delay Estimation (TDE) has always been a very active research topic in the field of signal processing, which has important theoretical significance and application value, and has been widely used in speech signal processing, acoustic positioning, target detection and tracking, wireless communication, Geophysical exploration fault diagnosis and biomedical engineering and other fields. Time delay estimation is to use the theory and method of signal processing to estimate the time difference of signals received by different receivers to determine its related parameters. In such applications, the uncertainty of input signal frequency, amplitude, and phase size, and the real-time nature of time delay estimation make it difficult to estima...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 储昭碧梁颖蕙朱敏陈波董学平
Owner HEFEI UNIV OF TECH
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