Step-by-step fusion method of multi-feedback lift signal of rolling stabilizing fin

A fusion method and fin stabilization technology, which is applied in the use of hydrofoils to reduce ship motion, instruments, electrical testing/monitoring, etc. on the surrounding water surface, which can solve the delay of signal fusion, poor real-time control, and adverse effects of control system feedback and other problems to achieve the effect of improving reliability and speeding up integration

Inactive Publication Date: 2019-04-16
HARBIN UNIV OF SCI & TECH
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Problems solved by technology

However, signal fusion may cause lag, which will adversely affect the feedback of the control system, resulting in poor real-time control

Method used

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  • Step-by-step fusion method of multi-feedback lift signal of rolling stabilizing fin
  • Step-by-step fusion method of multi-feedback lift signal of rolling stabilizing fin
  • Step-by-step fusion method of multi-feedback lift signal of rolling stabilizing fin

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Embodiment Construction

[0030] The present invention is described in detail below in conjunction with accompanying drawing:

[0031] Such as figure 1 As shown, the invention discloses a step-by-step fusion method of fin stabilizer multi-feedback lift signals. this method

[0032] Realization of the present invention comprises the following steps:

[0033] (1) Use A / D to collect the lift signal and fin angle signal of the fin stabilizer;

[0034] (2) Use the sequential fusion method to calculate the initial fusion lift, and calculate the mean square error between the lift measurement signal and the initial fusion lift;

[0035] The sequential fusion lift involved is:

[0036]

[0037] In the formula, N is the number of lift sensors, at time k, is the sequentially fused lift signal, L(k) is a known matrix, is the lift state variable, is the lift state variable at time k-1, K N (k) is the intermediate matrix, y N (k) is the signal value of the lift sensor, H N (k) is the corresponding li...

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Abstract

The invention relates to a step-by-step fusion method of a multi-feedback lift signal of a rolling stabilizing fin. The method comprises the steps that an A / D module is used for collecting a lift signal and a fin angle signal of the rolling stabilizing fin; initial fusion lift is resolved using a sequential fusion method, and the mean square error of a lift measuring signal and the initial fusionlift is resolved; a fin angle converting force is resolved by using a linear switching method, and the mean square error of the fin angle converting force and the initial fusion lift is resolved; theabove resolved mean square errors are compared, and a reliable lift signal is retained; ridge estimation is used for further fusing the lift signal to obtain an ultimate fusion lift signal; a mean square error of the ultimate fusion lift signal and the actual lift signal is resolved to be compared with the previously resolved mean square errors, and the accuracy of the invented lift fusion methodis verified. The method has the advantages that the fusion speed can be accelerated by the designed sequential filter algorithm, faulted or missed detecting lift signals can be removed, the reliability of the system can be improved by adopting the ridge estimation fusion algorithm, and the accuracy and effectiveness of the fusion method can be verified through simulation experiments.

Description

(1) Technical field [0001] The invention is a step-by-step fusion method of fin stabilizer multi-feedback lift signals. (2) Background technology [0002] In practical engineering applications, due to the simple and reliable angle measurement, the conventional fin stabilizer control system mostly uses the detection of fin angle for control, but the deviation when converting the fin angle into lift force is relatively large, resulting in inaccurate lift signal, which in turn affects the anti-roll effect. Using the actually detected dynamic lift signal as feedback can solve the deficiency of fin angle feedback control, but this technology is still in the stage of theoretical research, so the reliable way is to improve on the conventional system. [0003] Due to the harsh environment of the fin stabilizer, the location and special installation method of the sensor for detecting dynamic lift, the dynamic lift detection signal is easily interfered, and there are problems of low a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63B39/06G05B23/02
CPCB63B39/06G05B23/0221
Inventor 孙明晓栾添添徐军
Owner HARBIN UNIV OF SCI & TECH
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