CN111038672A - Intelligent active control method for sound radiation characteristics of ship structure - Google Patents
Intelligent active control method for sound radiation characteristics of ship structure Download PDFInfo
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- CN111038672A CN111038672A CN201911388084.XA CN201911388084A CN111038672A CN 111038672 A CN111038672 A CN 111038672A CN 201911388084 A CN201911388084 A CN 201911388084A CN 111038672 A CN111038672 A CN 111038672A
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- 230000005855 radiation Effects 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000000605 extraction Methods 0.000 claims abstract description 12
- 230000007613 environmental effect Effects 0.000 claims abstract description 8
- 230000003044 adaptive effect Effects 0.000 claims abstract description 7
- 230000008447 perception Effects 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000005764 inhibitory process Effects 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 6
- 239000000284 extract Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000013473 artificial intelligence Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G13/00—Other offensive or defensive arrangements on vessels; Vessels characterised thereby
- B63G13/02—Camouflage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G13/00—Other offensive or defensive arrangements on vessels; Vessels characterised thereby
- B63G13/02—Camouflage
- B63G2013/022—Camouflage using means for reducing noise emission into air or water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G13/00—Other offensive or defensive arrangements on vessels; Vessels characterised thereby
- B63G13/02—Camouflage
- B63G2013/027—Camouflage using stealth design, i.e. superstructures, hulls, or other vessel's components shaped or constructed for minimizing reflection of radar or sonar beams, or the like
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
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Abstract
The invention aims to provide an intelligent active control method for sound radiation characteristics of a ship structure, a sensing sensor detects acoustic and environmental information such as ship vibration noise, pressure, temperature and the like, a required ship radiation noise signal and acoustic situation information are extracted through an acoustic analysis and characteristic extraction module, a controller generates a signal with specific frequency and amplitude by using an adaptive control algorithm according to the ship radiation noise signal and the acoustic situation information, and finally the control on the sound radiation characteristics of the ship structure is realized through a driving module and an active actuator. The invention can change the ship voiceprint characteristics, realize the deception and the puzzlement of the opposite acoustic fake-showing disguise, and can realize the active inhibition and reduction of the ship radiation noise, the reduction of the self acoustic characteristic signal and the 'hiding' of the self to realize the intelligent sound stealth when necessary, thereby effectively improving the intelligent active control and sound stealth performance of the ship.
Description
Technical Field
The invention relates to a ship control method, in particular to a ship sound radiation control method.
Background
With the development of underwater sonar detection technology, the detection capability of sonar is continuously developed, and the detection frequency band corresponding to the sonar is also expanded to low frequency. Compared with the traditional control technology, the active control technology can be used for inhibiting and reducing the acoustic characteristics of the ship due to the fact that the low-frequency vibration of the structure can be effectively controlled, and the sound stealth performance of the ship is improved. However, under the continuously developed underwater acoustic detection background, the existing control method cannot meet the stealth camouflage requirement of ship acoustic true and false indication, and is difficult to effectively deal with the increasingly severe underwater detection threat. Particularly, the depth fusion of artificial intelligence and sensor technology obviously improves the real-time target recognition probability in wide-area and complex backgrounds, and provides new challenges for the existing stealth camouflage technology and means.
Disclosure of Invention
The invention aims to provide an intelligent active control method for ship structure sound radiation characteristics, which aims at the new challenges brought to the ship viability by continuously developing and enhancing modern underwater sound detection means and has acoustic fake camouflage display and acoustic stealth multifunctional compound.
The purpose of the invention is realized as follows:
the invention relates to an intelligent active control method for sound radiation characteristics of a ship structure, which is characterized by comprising the following steps:
the hull structure surface sets up the perception sensor, and acoustics and environmental parameter signal that the module was picked up the perception sensor to acoustics and environmental parameter signal are drawed with the feature to acoustic analysis, through time domain, frequency domain analysis and signal filtering, draw required boats and ships radiation noise signal and acoustics situation information, judge whether boats and ships need disguise through acoustics situation information:
and if so, performing acoustic fake camouflage control: the method comprises the steps that pre-stored acoustic characteristic signals of a target ship are used as expected signals and reference input signals, ship radiation noise signals which are picked up by a sensing sensor and extracted by an acoustic analysis and characteristic extraction module are subjected to difference with the expected signals, so that error signals are obtained, the obtained error signals are used as control module input, the weight coefficient of a control filter is updated in a self-adaptive mode based on a control algorithm of self-adaptive filtering, the control module generates control signals, a driving actuator is driven by a driving module to generate exciting force, the structure of a ship body is excited to vibrate to generate radiation noise, acoustic fake display is achieved, and then acoustic and environment parameter signals are picked up again by the sensing sensor;
and if not, carrying out ship radiation noise cancellation control: the sensing sensor picks up a ship radiation noise signal extracted by the acoustic analysis and feature extraction module to serve as an error signal, the error signal is used for input of the control module, a control algorithm based on adaptive filtering is utilized, the weight coefficient of the control filter is updated in a self-adaptive mode, the control module generates a control signal, the driving module drives the main actuator to generate exciting force to excite the ship structure to vibrate, the ship radiation noise is counteracted, the acoustic stealth of the ship is achieved, and then the sensing sensor picks up acoustic information such as vibration and noise on the surface of the ship structure again.
The present invention may further comprise:
1. the sensing sensors are dispersedly arranged on the hull structure below the water surface, the active actuators are dispersedly arranged on the hull structure below the water surface, and the number and the distribution of the active actuators do not depend on the sensing sensors.
The invention has the advantages that: in the traditional active control method for improving the sound stealth performance of the ship, the output signal of the controller only contains a control signal for offsetting the radiation noise of a ship body structure, so that a detector cannot detect the signal of the ship, and the sound stealth is realized. The intelligent active control method for the sound radiation characteristics of the ship structure, provided by the invention, can not only realize sound stealth, but also utilize an adaptive control algorithm to generate a control signal with specific frequency and amplitude, and the main actuator stimulates a ship body structure to generate radiation noise, so that a detector cannot detect a frequency characteristic signal of a ship and simultaneously detects a noise signal with specific frequency generated according to self requirements, thereby realizing the acoustic false camouflage of deception and puzzlement of the other party.
Drawings
FIG. 1 is a schematic diagram of an active control system model;
FIG. 2 is a flow chart of the present invention.
Detailed Description
The invention will now be described in more detail by way of example with reference to the accompanying drawings in which:
with reference to fig. 1-2, the active control system of the present invention includes a sensing sensor 1, an acoustic analysis and feature extraction module 2, a control module 3, a driving module 4, and an active actuator 5. The plurality of perception sensors 1 and the active actuators 5 are dispersedly arranged on the surface of the ship structure, and the number and the distribution of the perception sensors and the active actuators are relatively independent. The acoustic analysis and feature extraction module 2, the control module 3 and the driving module 4 adopt integration, modular design and multi-group parallel use.
a) The sensing sensor 1 picks up acoustic and environmental parameter signals such as ship vibration noise, pressure, temperature and the like, and transmits the signals to the acoustic analysis and feature extraction module 2;
b) the acoustic analysis and feature extraction module 2 analyzes the original signal as required, extracts a ship radiation noise signal and acoustic situation information from the original signal and provides the ship radiation noise signal and the acoustic situation information to the control module 3;
c) the control module 3 generates signals with specific frequency and amplitude by using an adaptive control algorithm and transmits the signals to the driving module 4;
d) the driving module 4 amplifies the input signal and transmits the amplified signal to the main actuator 5;
e) the active actuators 5 excite the hull structure in accordance with the signals provided by the drive modules 4.
The control module 3 can generate a signal for reducing the self-structure sound radiation and a signal with a specific frequency and amplitude simultaneously or separately according to the control requirement.
The perception sensor 1 and the main actuator 5 are controlled by an intelligent control system in a centralized way to carry out multi-objective synchronous optimization.
The self-adaptive control algorithm can generate signals with specific frequency and amplitude, the main actuator 5 arranged on the surface of the ship structure excites the ship structure, the ship voiceprint characteristics are changed, deception and puzzlement of the other side are achieved, active suppression and reduction of ship radiation noise are achieved, self acoustic characteristic signals are reduced, the self is hidden, and intelligent sound stealth is achieved.
The sensing sensors 1 are distributed on the ship structure below the water surface. The main actuators 5 are distributed on the hull structure below the water surface, and the number and the distribution of the main actuators 5 are independent of the perception sensors 1.
The intelligent active control method for the sound radiation characteristics of the ship structure comprises the following steps:
perception sensor 1 distributes on the hull structure surface, environmental parameter signal such as detected pressure, temperature, pick up acoustic information such as vibration and noise on the hull structure surface, acoustic analysis and characteristic extraction module 2 is to acoustic and environmental parameter signal that perception sensor 1 picked up, through time domain, frequency domain analysis and signal filtering, extract required boats and ships radiation noise signal and acoustic situation information, boats and ships radiation noise signal is used for the synthesis of error signal, acoustic situation information is used for judging whether boats and ships need disguise, if need, then carry out acoustics and show the control of disguising: the acoustic characteristic signal of the target ship is pre-stored and used as an expected signal and a reference input signal, and the ship radiation noise signal picked up by the perception sensor 1 and extracted by the acoustic analysis and characteristic extraction module 2 is differed with the expected signal to obtain an error signal. The obtained error signal is used as the input of the control module 3, and the weight coefficient of the filter is adaptively updated and controlled based on the control algorithm of the adaptive filtering. The control module 3 generates a control signal, the driving module 4 with low consumption, high efficiency and excellent output characteristics drives the active actuator 5 to stably and efficiently work, excitation force is generated, the hull structure is excited to vibrate to generate radiation noise, and acoustic fake display is achieved. The perception sensor 1 picks up again acoustic information such as vibration and noise of the surface of the ship structure. And if not, carrying out ship radiation noise cancellation control: the ship radiation noise signal picked up by the perception sensor 1 and extracted by the acoustic analysis and feature extraction module 2 is used as an error signal for the input of the control module 3, and the weight coefficient of the control filter is adaptively updated by using a control algorithm based on adaptive filtering. The control module 3 generates a control signal, the driving module 4 drives the active actuator 5 to generate exciting force, the structure of the ship body is excited to vibrate, the self radiation noise of the ship is counteracted, and the acoustic stealth of the ship is realized. The perception sensor 1 picks up again acoustic information such as vibration and noise of the surface of the ship structure. The main actuators 5 are arranged on the hull, distributed on the surface of the structure, are actuating mechanisms of an intelligent active control system, and can excite the hull structure to vibrate according to output signals of the control module 3 and the driving module 4, so that the sound radiation characteristics of the ship structure are changed, and the acoustic true-false camouflage is realized. The intelligent control system adopts integrated and modularized design and carries out multi-objective synchronous optimization.
The active actuator 5 acts on the ship body structure, outputs exciting force according to control requirements, and counteracts the radiation noise of the ship structure or generates a ship structure radiation noise signal with the acoustic characteristic of a target ship by exciting the vibration of the ship body structure.
Claims (2)
1. The intelligent active control method for the sound radiation characteristics of the ship structure is characterized by comprising the following steps:
the hull structure surface sets up the perception sensor, and acoustics and environmental parameter signal that the module was picked up the perception sensor to acoustics and environmental parameter signal are drawed with the feature to acoustic analysis, through time domain, frequency domain analysis and signal filtering, draw required boats and ships radiation noise signal and acoustics situation information, judge whether boats and ships need disguise through acoustics situation information:
and if so, performing acoustic fake camouflage control: the method comprises the steps that pre-stored acoustic characteristic signals of a target ship are used as expected signals and reference input signals, ship radiation noise signals which are picked up by a sensing sensor and extracted by an acoustic analysis and characteristic extraction module are subjected to difference with the expected signals, so that error signals are obtained, the obtained error signals are used as control module input, the weight coefficient of a control filter is updated in a self-adaptive mode based on a control algorithm of self-adaptive filtering, the control module generates control signals, a driving actuator is driven by a driving module to generate exciting force, the structure of a ship body is excited to vibrate to generate radiation noise, acoustic fake display is achieved, and then acoustic and environment parameter signals are picked up again by the sensing sensor;
and if not, carrying out ship radiation noise cancellation control: the sensing sensor picks up a ship radiation noise signal extracted by the acoustic analysis and feature extraction module to serve as an error signal, the error signal is used for input of the control module, a control algorithm based on adaptive filtering is utilized, the weight coefficient of the control filter is updated in a self-adaptive mode, the control module generates a control signal, the driving module drives the main actuator to generate exciting force to excite the ship structure to vibrate, the ship radiation noise is counteracted, the acoustic stealth of the ship is achieved, and then the sensing sensor picks up acoustic information such as vibration and noise on the surface of the ship structure again.
2. The intelligent active control method for sound radiation characteristics of ship structures according to claim 1, wherein the method comprises the following steps: the sensing sensors are dispersedly arranged on the hull structure below the water surface, the active actuators are dispersedly arranged on the hull structure below the water surface, and the number and the distribution of the active actuators do not depend on the sensing sensors.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111069009A (en) * | 2019-12-30 | 2020-04-28 | 哈尔滨工程大学 | Intelligent active control method for acoustic characteristics of ship |
| CN114162261A (en) * | 2021-11-16 | 2022-03-11 | 舟山中远海运重工有限公司 | Ship noise control method |
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2019
- 2019-12-30 CN CN201911388084.XA patent/CN111038672A/en active Pending
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Application publication date: 20200421 |