CN105526305B - A kind of system and method for being used to suppress marine diesel oil machine vibration - Google Patents
A kind of system and method for being used to suppress marine diesel oil machine vibration Download PDFInfo
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- CN105526305B CN105526305B CN201610055877.XA CN201610055877A CN105526305B CN 105526305 B CN105526305 B CN 105526305B CN 201610055877 A CN201610055877 A CN 201610055877A CN 105526305 B CN105526305 B CN 105526305B
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- diesel engine
- damper
- cylinder body
- speed
- vibration
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
Abstract
The present invention discloses a kind of system and method for being used to suppress marine diesel oil machine vibration.Wherein, the system includes：First sensor, it is installed on diesel engine, for measuring the first acceleration of the diesel engine；Second sensor, it is installed on hull, for measuring the second acceleration of the hull；Damper, it is installed between the diesel engine and the hull；Control device, it is connected with the first sensor, second sensor and damper, negative work is done to the diesel engine for the damping force caused by damper according to first acceleration and second Acceleration Control, the vibrational energy of the diesel engine is consumed, so as to suppress the diesel vibration.The present invention realizes the semi- active control of diesel vibration using the damper of controllable damping force, it is not necessary to which extra actuator, power consumption cost is low, and system need to only control the on off state of damper according to the Vibration Condition of diesel engine, and control method is simple, easily realizes.
Description
Technical field
The present invention relates to marine diesel, in particular it relates to a kind of system for being used to suppress marine diesel oil machine vibration and
Method.
Background technology
With the rapid growth of global economic integration, sea transport industry has obtained development continuously and healthily.Sea transport
Turn into an important factor for promoting global economic integration already.The development of sea transport industry be unable to do without the development of ship, diesel engine
It is the main power source of ship domain.The vibrated conference of marine diesel reduces the reliability and service life of diesel engine in itself,
Vibration isolating rubber pad tear is even resulted in, it is delivered to the vibration of hull and the noise as caused by vibration has a strong impact on that user's is comfortable
Property.With diesel engine at a high speed, high-power direction develop, its vibration can be also further exacerbated by.Traditional passive vibration isolation technology is got over
To be more difficult to meet at present to diesel engine high reliability and high-comfort requirement.Therefore, research is suitable for marine diesel
Vibration control new technology, new equipment have important application value.
After the structure determination of rubber cushion suspension vibration isolation passive control device, isolation characteristicses also determine, can not adapt to burst
The change of interfering frequency.Active control technology needs additional energy source, and control system includes state monitor, control system, execution
Device, control system need the control algolithm of reasonably stability, and very high to the requirement of real-time of state monitor and actuator,
Manufacture, operation and maintenance cost are all very high, are very limited in ship practical application.Active control technology is due to power consumption
Cost height, control system algorithm complexity are difficult to apply to the vibration control of actual marine diesel.Therefore, research is applied to ship
There is important application value with the semi- active control technology of the vibration control of diesel engine.
The content of the invention
It is an object of the invention to provide a kind of in the system and method that suppress marine diesel oil machine vibration.Wherein, the system
System realizes the semi- active control of diesel vibration using the damper of controllable damping force, it is not necessary to extra actuator, consumes energy into
This is low, and the on off state of damper need to be only controlled according to the Vibration Condition of diesel engine, and control method is simple, easily realizes.
To achieve these goals, the present invention provides a kind of system for being used to suppress marine diesel oil machine vibration.The system
Including：First sensor, it is installed on diesel engine, for measuring the first acceleration of the diesel engine；Second sensor, installation
In on hull, for measuring the second acceleration of the hull；Damper, it is installed between the diesel engine and the hull；
Control device, it is connected with the first sensor, second sensor and damper, for according to first acceleration and institute
State damping force caused by damper described in the second Acceleration Control and negative work is done to the diesel engine, consume the vibration of the diesel engine
Energy, so as to suppress the diesel vibration.
Alternatively, the first sensor and the second sensor are acceleration transducer.
Alternatively, the damper is unilateral bar compression-type damper.
Alternatively, the unilateral bar compression-type damper includes：First cylinder body, the second cylinder body, piston, magnetic valve, ball valve
And push rod, wherein, hydraulically full in first cylinder body, second cylinder body is fixed in first cylinder body, and described
Throttle orifice is provided with the side wall of second cylinder body, the magnetic valve is connected with the ball valve, and the magnetic valve and the ball valve
It is arranged on the piston, the push rod drives the piston to be moved up and down in second cylinder body, is in the ball valve
In the case of open mode, first cylinder body connects with second cylinder body.
Alternatively, the push rod is connected with the diesel engine, and the bottom of first cylinder body is fixed on the hull.
Alternatively, the system also includes：Suspending cushion, be installed between the diesel engine and the hull, for every
Vibration from from the diesel engine to the hull transmission, so as to reduce due to noise caused by vibration.
Alternatively, the control device is specifically used for being obtained according to first acceleration and second acceleration calculation
The second speed of the First Speed of the diesel engine and the hull, judging the difference of the First Speed and the second speed
In the case of being more than zero with the product of the First Speed, the closed electromagnetic valve of the damper is controlled so that the damper
Caused damping force does negative work to the diesel engine, consumes the vibrational energy of the diesel engine, is shaken so as to suppress the diesel engine
It is dynamic, in the case of the poor and First Speed product for judging the First Speed and the second speed is minus, control
The magnetic valve for making the damper is opened so that the damper does not produce damping force.
Correspondingly, the present invention also provides a kind of method for being used to suppress marine diesel oil machine vibration.Methods described includes：Receive
The first acceleration signal transmitted by the first sensor being installed on diesel engine and the second sensor institute being installed on hull
The second acceleration signal sent；Produced according to first acceleration signal and second acceleration signal control damper
Damping force negative work is done to the diesel engine, the vibrational energy of the diesel engine is consumed, so as to suppress the diesel vibration.
Alternatively, the damper is unilateral bar compression-type damper.
Alternatively, it is described according to caused by first acceleration signal and second acceleration signal control damper
Damping force does negative work to the diesel engine, consumes the vibrational energy of the diesel engine, so as to suppress the diesel vibration, specifically
Including：According to first acceleration signal and second acceleration signal be calculated the diesel engine First Speed and
The second speed of the hull；The First Speed and described the are calculated according to the First Speed and the second speed
The poor and product of the First Speed of two speed；In the case where judging that the product is more than zero, the damper is controlled
Closed electromagnetic valve so that damping force does negative work to the diesel engine caused by the damper, consumes the vibration of the diesel engine
Energy, so as to suppress the diesel vibration, in the case of judging that the product is minus, control the electromagnetism of the damper
Valve is opened so that the damper does not produce damping force.
Pass through above-mentioned technical proposal, the first acceleration of diesel engine and the second acceleration of hull are measured, added according to first
Damping force caused by speed and the second Acceleration Control damper does negative work to diesel engine, consumes the vibrational energy of diesel engine, from
And suppressing diesel vibration, the cost that not only consumes energy is low, and control method is simple, easily realizes.
Brief description of the drawings
Fig. 1 is the structural representation provided by the present invention for suppressing the system of marine diesel oil machine vibration；
Fig. 2 is the structural representation of the damper of system provided by the invention；
Fig. 3 is the theoretical analysis schematic diagram of the semi- active control of diesel engine；
Fig. 4 is the particular flow sheet provided by the present invention for suppressing the method for marine diesel oil machine vibration.
Description of reference numerals
The hull of 10 first sensor, 11 diesel engine, 12 second sensor 13
The cylinder body of 14 damper, 15 control device, 16 suspending cushion 17 first
The push rod of 18 second cylinder body, 19 piston, 20 magnetic valve, 21 ball valve 22
23 throttle orifices
Embodiment
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
Fig. 1 is the structural representation provided by the present invention for suppressing the system of marine diesel oil machine vibration.As shown in figure 1,
Include provided by the present invention for the system for suppressing marine diesel oil machine vibration：First sensor 10, it is installed on diesel engine 11, uses
In the first acceleration for measuring the diesel engine；Second sensor 12, it is installed on hull 13, for measuring the of the hull
Two acceleration；Damper 14, it is installed between the diesel engine 11 and the hull 13；Control device 15, passed with described first
Sensor 10, second sensor 12 and damper 14 connect, for according to first acceleration and the second acceleration control
Make damping force caused by the damper and negative work is done to the diesel engine, the vibrational energy of the diesel engine is consumed, so as to suppress
The diesel vibration.Thereby, the cost that not only consumes energy is low, and control method is simple, easily realizes.
In a particular embodiment, the first sensor 10 and the second sensor 12 are acceleration sensing
Device, the damper 14 are unilateral bar compression-type damper.
Fig. 2 is the structural representation of the damper of system provided by the invention.As shown in Fig. 2 in specific application, institute
Stating unilateral bar compression-type damper includes：First cylinder body 17, the second cylinder body 18, piston 19, magnetic valve 20, ball valve 21 and push rod
22, wherein, hydraulically full in first cylinder body 17, second cylinder body 18 is fixed in first cylinder body 17, and described
Throttle orifice 23 is provided with the side wall of second cylinder body 18, the magnetic valve 20 is connected with the ball valve 21, and the magnetic valve 20
It is arranged at the ball valve 21 on the piston 19, the push rod 22 drives the piston 19 upper and lower in second cylinder body 18
Motion, in the case where the ball valve 21 is in open mode, first cylinder body 17 connects with second cylinder body 18.
In a particular embodiment, when magnetic valve 20 is closed, the ball valve 21 that is connected with magnetic valve 20
It is closed, the first cylinder body 17 does not connect with the second cylinder body 18.In the process that push rod 22 promotes piston 19 to compress, fluid
Flowed to by throttle orifice 23 out of second cylinder body outside the second cylinder body, produce damping force.Due to the side wall of the second cylinder 18 of damper
On be provided with multiple throttle orifices 23, as push rod 22 moves downward, the damping orifice number that works is reduced, in flow identical
In the case of, damping force increased dramatically, and extremely strong nonlinear characteristic is presented in damping force.As a rule, damping force is transported downwards with push rod
The increase of dynamic speed and index increases, good buffering effect can be played, can effectively suppress the impact shock of diesel engine.Work as electricity
When magnet valve 20 is in open mode, the ball valve 21 being connected with magnetic valve 20 is also at open mode, the first cylinder body 17 and the second cylinder
Body 18 connects, and fluid flows out from ball valve 21, damping force very little, can be neglected.
In specific application, the push rod 22 of the damper 14 is connected with the diesel engine 11, and first cylinder body
17 bottom is fixed on the hull 13.
Preferably, the system also includes：Suspending cushion 16, it is installed between the diesel engine 11 and the hull 13,
For isolating vibration of the diesel engine to the hull transmission, so as to reduce due to noise caused by vibration.
Specifically, the control device 15 is used to obtain institute according to first acceleration and second acceleration calculation
State the First Speed of diesel engine and the second speed of the hull, judge the difference of the First Speed and the second speed with
In the case that the product of the First Speed is more than zero, the closed electromagnetic valve of the damper is controlled so that the damper production
Raw damping force does negative work to the diesel engine, consumes the vibrational energy of the diesel engine, so as to suppress the diesel vibration,
In the case of the poor and First Speed product for judging the First Speed and the second speed is minus, institute is controlled
The magnetic valve for stating damper is opened so that the damper does not produce damping force.
Fig. 3 is the theoretical analysis schematic diagram of the semi- active control of diesel engine.As shown in figure 3, the body of diesel engine 11 is as sharp
It is v that the source of encouraging, which makes itself to produce speed,1Vibration, the vibration of diesel engine 11 is delivered on hull 13 by suspended rubber mat 16, caused
The vibration velocity of hull is v2, diesel engine 11 is △ v=v to the speed of related movement of hull 131-v2, damper produce all the time with
Diesel engine speed of related movement △ v damping force in opposite direction, ensure that damping force overcomes the deformation force of suspended rubber mat 16 all the time.
Work as v1>0, △ v>0, it that is to say that the direction of vibration of diesel engine is upward, speed of related movement is more than zero, and damper does negative to diesel engine
Work(；Work as v1<0, △ v<0, it that is to say that the direction of vibration of diesel engine is downward, speed of related movement is less than zero, and damper is to diesel engine
Do negative work；Work as v1>0, △ v<0, damper does positive work to diesel engine；Work as v1<0, △ v>0, damper does positive work to diesel engine.Such as
All the time there is the damping force for overcoming rubber cushion to deform in fruit, then can there is a situation where to do positive work to diesel engine.Therefore, in order to ensure to hinder
Buddhist nun's power does negative work to diesel engine always, works as v1*△v<0, it is 0 that control device 15, which controls the damping force of damper 14,.
Correspondingly, the present invention also provides a kind of method for being used to suppress marine diesel oil machine vibration.Fig. 4 is provided by the invention
For the particular flow sheet for the method for suppressing marine diesel oil machine vibration.As shown in figure 4, provided by the present invention for suppressing bavin peculiar to vessel
The method of oil machine vibration specifically includes：In step S101, the be installed on transmitted by first sensor on diesel engine is received
The second acceleration signal transmitted by one acceleration signal and the second sensor being installed on hull.Then, in step S102
In, First Speed and the institute of the diesel engine are calculated according to first acceleration signal and second acceleration signal
State the second speed of hull.And then, in step s 103, institute is calculated according to the First Speed and the second speed
State the poor and product of the First Speed of First Speed and the second speed.Then, in step S104, multiply described in judgement
Whether product is more than zero.In the case where judging that the product is more than zero, then step S105 is performed, control the electromagnetism of the damper
Valve is closed so that and damping force does negative work to the diesel engine caused by the damper, consumes the vibrational energy of the diesel engine,
So as to suppress the diesel vibration.In the case of judging that the product is minus, then step S106 is performed, controls the resistance
The magnetic valve of Buddhist nun's device is opened so that the damper does not produce damping force.
Wherein, step S102, step S103, step S104, step S105 and step S106 can summary be：According to
Damping force caused by damper described in first acceleration and second Acceleration Control does negative work to the diesel engine, disappears
The vibrational energy of the diesel engine is consumed, so as to suppress the diesel vibration.
The present invention realizes the semi- active control of diesel vibration using the damper of controllable damping force, actual for diesel engine
Vibrational state realizes active control, it is not necessary to which extra actuator, power consumption cost is low, and system only need to be according to the vibration feelings of diesel engine
Condition controls the on off state of damper, and control algolithm is simple, easily realizes.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, still, the present invention is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the present invention, a variety of letters can be carried out to technical scheme
Monotropic type, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (7)
1. a kind of system for being used to suppress marine diesel oil machine vibration, it is characterised in that the system includes：
First sensor, it is installed on diesel engine, for measuring the first acceleration of the diesel engine；
Second sensor, it is installed on hull, for measuring the second acceleration of the hull；
Damper, it is installed between the diesel engine and the hull；
Control device, it is connected with the first sensor, second sensor and damper, for according to first acceleration
Negative work is done to the diesel engine with damping force caused by damper described in second Acceleration Control, consumes the diesel engine
Vibrational energy, so as to suppress the diesel vibration；
The damper is unilateral bar compression-type damper；
The unilateral bar compression-type damper includes：
First cylinder body, the second cylinder body, piston, magnetic valve, ball valve and push rod,
Wherein, hydraulically full in first cylinder body, second cylinder body is fixed in first cylinder body, and second cylinder
Throttle orifice is provided with the side wall of body, the magnetic valve is connected with the ball valve, and the magnetic valve is arranged at the ball valve
On the piston, the push rod drives the piston to be moved up and down in second cylinder body, and open shape is in the ball valve
In the case of state, first cylinder body connects with second cylinder body.
2. the system according to claim 1 for being used to suppress marine diesel oil machine vibration, it is characterised in that first sensing
Device and the second sensor are acceleration transducer.
3. the system according to claim 1 for being used to suppress marine diesel oil machine vibration, it is characterised in that the push rod and institute
Diesel engine connection is stated, and the bottom of first cylinder body is fixed on the hull.
4. the system according to claim 1 for being used to suppress marine diesel oil machine vibration, it is characterised in that the system is also wrapped
Include：
Suspending cushion, it is installed between the diesel engine and the hull, for isolating the diesel engine to the hull transmission
Vibration, so as to reduce due to noise caused by vibration.
5. the system according to claim 1 for being used to suppress marine diesel oil machine vibration, it is characterised in that the control device
Specifically for obtaining the First Speed of the diesel engine and described according to first acceleration and second acceleration calculation
The second speed of hull, judging the First Speed with the poor and product of the First Speed of the second speed more than zero
In the case of, control the closed electromagnetic valve of the damper so that damping force is done to the diesel engine caused by the damper
Negative work, consume the vibrational energy of the diesel engine, so as to suppress the diesel vibration, judge the First Speed with it is described
In the case of the poor and First Speed product of second speed is minus, controls the magnetic valve of the damper to open, make
Obtain the damper and do not produce damping force.
A kind of 6. method for being used to suppress marine diesel oil machine vibration, it is characterised in that methods described includes：
Receive the first acceleration signal transmitted by the first sensor being installed on diesel engine and be installed on hull second
The second acceleration signal transmitted by sensor；
According to damping force caused by first acceleration signal and second acceleration signal control damper to the bavin
Oil machine does negative work, consumes the vibrational energy of the diesel engine, so as to suppress the diesel vibration；
The damper is unilateral bar compression-type damper；
The unilateral bar compression-type damper includes：
First cylinder body, the second cylinder body, piston, magnetic valve, ball valve and push rod,
Wherein, hydraulically full in first cylinder body, second cylinder body is fixed in first cylinder body, and second cylinder
Throttle orifice is provided with the side wall of body, the magnetic valve is connected with the ball valve, and the magnetic valve is arranged at the ball valve
On the piston, the push rod drives the piston to be moved up and down in second cylinder body, and open shape is in the ball valve
In the case of state, first cylinder body connects with second cylinder body.
7. the method according to claim 6 for being used to suppress marine diesel oil machine vibration, it is characterised in that described in the basis
Damping force caused by first acceleration signal and second acceleration signal control damper does negative work to the diesel engine,
The vibrational energy of the diesel engine is consumed, so as to suppress the diesel vibration, is specifically included：
According to first acceleration signal and second acceleration signal be calculated the diesel engine First Speed and
The second speed of the hull；
Difference and the institute of the First Speed and the second speed are calculated according to the First Speed and the second speed
State the product of First Speed；
In the case where judging that the product is more than zero, the closed electromagnetic valve of the damper is controlled so that the damper production
Raw damping force does negative work to the diesel engine, consumes the vibrational energy of the diesel engine, so as to suppress the diesel vibration,
In the case of judging that the product is minus, the magnetic valve of the damper is controlled to open so that the damper does not produce
Damping force.
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| CN201610055877.XA CN105526305B (en) | 2016-01-27 | 2016-01-27 | A kind of system and method for being used to suppress marine diesel oil machine vibration |
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| CN201610055877.XA CN105526305B (en) | 2016-01-27 | 2016-01-27 | A kind of system and method for being used to suppress marine diesel oil machine vibration |
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| CN105526305B true CN105526305B (en) | 2017-12-05 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105889409B (en) * | 2016-05-10 | 2018-12-11 | 武汉理工大学 | The double feedback silicone oil vibration insulating systems of boat diesel engine |
| CN107061604A (en) * | 2016-11-23 | 2017-08-18 | 浙江工业大学 | A kind of semi- active control buoyant raft shock-resistant system |
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| CZ319698A3 (en) * | 1998-10-02 | 2000-04-12 | Michael Prof. Ing. Drsc. Valášek | Apparatus for semi-active damping of vibrations |
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| US4887699A (en) * | 1989-02-10 | 1989-12-19 | Lord Corporation | Vibration attenuating method utilizing continuously variable semiactive damper |
| CN101701616A (en) * | 2009-11-20 | 2010-05-05 | 中国科学院上海光学精密机械研究所 | Active vibration isolation platform |
| CN202021499U (en) * | 2011-03-30 | 2011-11-02 | 嘉兴学院 | Semi-automatic machine tool vibration isolation device based on magneto-rheological damping technology |
| CN102582389A (en) * | 2012-03-02 | 2012-07-18 | 江苏大学 | Vehicle suspension control method based on virtual damper |
| CN203685974U (en) * | 2013-11-14 | 2014-07-02 | 高乐（天津）科技发展有限公司 | Semi-active vibration removal system |
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