CN109630415A - A kind of quick ballasting system and its air-compressor set energy-saving control method - Google Patents
A kind of quick ballasting system and its air-compressor set energy-saving control method Download PDFInfo
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- CN109630415A CN109630415A CN201811513670.8A CN201811513670A CN109630415A CN 109630415 A CN109630415 A CN 109630415A CN 201811513670 A CN201811513670 A CN 201811513670A CN 109630415 A CN109630415 A CN 109630415A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/06—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for stopping, starting, idling or no-load operation
-
- 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
- B63G8/00—Underwater vessels, e.g. submarines; Equipment specially adapted therefor
- B63G8/14—Control of attitude or depth
- B63G8/24—Automatic depth adjustment; Safety equipment for increasing buoyancy, e.g. detachable ballast, floating bodies
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/08—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by varying the rotational speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/28—Safety arrangements; Monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/18—Pressure
- F04C2270/185—Controlled or regulated
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The present invention devises a kind of quick ballasting system and its air-compressor set energy-saving control method, control pressurer system is connect with air-compressor set, frequency converter and quick ballast tank respectively, control pressurer system is by air-compressor set start and stop and unloading command, frequency converter frequency is added to instruct, pass to PLC controller, and completed by PLC controller the starting of power frequency air compressor machine, stopping, load, offloading functions and frequency conversion air compressor frequency converter frequency variation function；The air pressure value of quick ballast tank is passed into control pressurer system, the air pressure value of quick ballast tank is tested by pressure sensor.The Application of frequency conversion technique of parameter adaptive fuzzy in system, and is proposed work-frequency conversion association type air-compressor set clustered control scheme by the present invention.For having the characteristics that fluctuate big, time variation, uncertainty, non-linear gas pressure change, there is stronger adaptability, can be timely responded to according to the variation of operating condition, the energy-saving effect having had.
Description
Technical field
The invention belongs to air ballasting system design field more particularly to a kind of quick ballasting systems and its air compressor machine
Group energy-saving control method.
Background technique
It is used for the quick ballasting system of air of submarine emergency buoyancy earliest, Semi-submersible type hoisting is used for by international vendor
In the ballasting system design of platform.Air ballasting system realizes superpressure using air compressor in ballast tank, by ballast in cabin
Water is quickly blown down, and row's load speed is very fast, and highest can achieve the decades of times of conventional centrifugal pump, can using air ballasting system
Load process is arranged with very big acceleration.
Air compressor machine is the maximum energy consumption user during quick ballast, and during arranging load, the operating status of air compressor machine
Moment will affect the floading condition of lifting dismantling platform.How the energy conservation fortune of air-compressor set is controlled while guaranteeing system safety operation
Row, is of great significance to the economical operation of system.The characteristics of analysis row's load process, with the minimum target of system energy consumption, with full
The sufficient activity duration requires to find quick ballasting system method for optimally controlling to constrain and be a problem to be solved.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of quick ballasting system and its air-compressor set Energy Saving Control sides
Method is saved while guaranteeing lifting platform safety by quick ballasting system air-compressor set frequency control and clustered control
Energy consumption.
The technical solution adopted by the present invention to solve the technical problems is: providing a kind of quick ballasting system and its air compressor machine
Group energy-saving control method, is mainly made of air-compressor set, frequency converter, quick ballast tank, pressure sensor and control pressurer system,
Control pressurer system is connect with air-compressor set, frequency converter and quick ballast tank respectively, and control pressurer system is communicated using CAN bus
Mode is by air-compressor set start and stop and unloading command, frequency converter frequency is added to instruct, and is communicated using RS485, passes to controller, and lead to
Controller is crossed to complete the variation of the frequency converter frequency of the starting of power frequency air compressor machine, stopping, load, offloading functions and frequency conversion air compressor
Function；The air pressure value of quick ballast tank is passed into control pressurer system, the air pressure value of quick ballast tank passes through pressure
Force snesor test.
It according to the above technical scheme, further include motor, the three-phase electricity output end interface of power grid is connected by power cable to be become
The three-phase electricity input end interface of frequency device；The three-phase electricity output end interface of frequency converter connects the three-phase electricity of motor by power cable
Input end interface；The output end of motor passes through connection axis connection air compressor machine.
According to the above technical scheme, the air-compressor set is screw-rod air compressor group.
The present invention also provides a kind of quick ballasting system air-compressor set energy-saving control method, controller controls the frequency of frequency converter
Rate transformation, controls the frequency conversion air compressor of air-compressor set by the frequency changing method of fuzzy-adaptation PID control, by fuzzy
Pid parameter Self tuning control algorithm is in real time adjusted the parameter of PID controller, specifically includes, step 1, by compression
Gas pressure setting value obtains pressure divergence e and the variation of deviation of system compared with pressure measuring value in air header
Rate ec, is then quantified；Step 2, by after quantization e and ec carry out blurring and fuzzy reasoning；Step 3, by solving mould
Paste is realized to proportionality coefficient Δ KP, the integral coefficient Δ KI of PID and the Self-tuning System of differential coefficient Δ KD, guarantees system for difference
E and ec all there is good static and dynamic property, step 4, fuzzy controller obtains frequency conversion pneumatics by operation
The running frequency of machine, to realize air compressor machine according to practical gas consumption and pressure demand converting operation.
According to the above technical scheme, in the step 2, the fuzzy rule design of fuzzy controller is as follows: e, ec, Δ
Domain after KP, Δ KI and Δ KD quantify is { -6, -5, -4, -3, -2, -1,0,1,2,3,4,5,6 }, will respectively be output and input
Domain is divided into 7 grades after the quantization of parameter, i.e., { bears big NB, bear middle NM, bear small NS, medium ZO, just small PS hits exactly PM, just
Big PB }, the NB of e, ec be the NB of { -6, -5, -4 }, Δ KP, Δ KI and Δ KD be { -6, -5, -4, -3 }, the NM of each parameter is
The NS of { -6, -5, -4, -3, -2 }, each parameter be { -4, -3, -2, -1,0 }, each parameter ZO be { -2, -1,0,1,2 }, it is each
The PS of parameter be { 0,1,2,3,4 }, each parameter PM be { 2,3,4,5,6 }, the PB of e, ec are { 4,5,6 }, Δ KP, Δ
The PB of KI and Δ KD are { 3,4,5,6 }.When e is negative it is big or negative middle when, no matter how ec, which changes, should eliminate deviation, make supply gas pressure
Become larger, increase air demand, increase rotational speed of air compressor, increase control frequency, it is honest for taking output quantity；When e is negative it is small or medium when,
Mainly the stability of system is controlled, reduces overshoot, so that system is restored to stable state, controlled according to deviation variation rate
Pneumatics unit frequency, when ec is negative, pressure difference has the tendency that increase, and compressor rotary speed needs to increase, and control frequency also needs accordingly to increase
Greatly, when ec is timing, the trend that pressure difference is reduced need to be reduced the control frequency of air compressor.Control when deviation is negative
Rule processed is equally applicable to the case where deviation is positive.
According to the above technical scheme, in the step 2, e and ec select Triangleshape grade of membership function；Δ KP, Δ KI and Δ KD
The subordinating degree function of these three output parameters, using the adjusting preferable Gaussian subordinating degree function of effect, remaining uses three at both ends
Angular subordinating degree function.The resolution ratio of Triangleshape grade of membership function is higher.
It according to the above technical scheme, further include power frequency air-compressor set in air-compressor set, by power frequency air compressor machine A, power frequency air compressor machine B
Formed with frequency conversion air compressor D, air-compressor set uses benched spillway face, each air compressor machine plus stepped point of unloading pressure
Cloth, frequency variation adjacent two compressor plus that unloading pressure passes through fuzzy-adaptation PID control in increasing trend, frequency conversion air compressor D
Method is controlled.
The beneficial effect comprise that: the present invention is research pair with the quick ballasting system of Semi-submersible type hoisting platform
As the Application of frequency conversion technique of parameter adaptive fuzzy in system, and proposing work-frequency conversion association type air-compressor set cluster
Control program.For having the characteristics that fluctuate big, time variation, uncertainty, non-linear gas pressure change, the present invention is mentioned
Control strategy out has stronger adaptability, can be timely responded to according to the variation of operating condition, the energy-saving effect having had.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is quick ballasting system schematic diagram in the embodiment of the present invention；
Fig. 2 is Self-Tuning Fuzzy-PID Controller control principle drawing in the embodiment of the present invention；
Fig. 3 is the subordinating degree function figure of e and ec in the embodiment of the present invention；
Fig. 4 is the subordinating degree function figure of Δ KP, Δ KI and Δ KD in the embodiment of the present invention；
Fig. 5 is Central Plains of embodiment of the present invention air compressor machine clustered control figure；
Fig. 6 is air compressor machine clustered control figure after being transformed in the embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
In the embodiment of the present invention, a kind of quick ballasting system of energy-saving run, the quick ballast system that the present invention designs are provided
System is made of control pressurer system, air compressor system, pipeline and vessel ballast system three parts.As shown in Figure 1, control pressurer system
Capital equipment is operating status control system device 1；Air compressor system capital equipment has power frequency air-compressor set 2, frequency converter 3, electricity
Machine 4 and frequency conversion air compressor 5；Pipeline and vessel ballast system capital equipment have pipeline, valve, quick ballast tank 6 and pressure sensor.
Control pressurer system device is connect with air-compressor set, frequency converter and quick ballast tank respectively.Control pressurer system is logical
It crosses using CAN bus communication modes, by air-compressor set start and stop and unloading command and frequency converter frequency is added to instruct, it is logical using RS485
News, pass to PLC controller, and completed by PLC controller the starting of power frequency air compressor machine, stopping, load, offloading functions and
The frequency converter frequency of frequency conversion air compressor changes function；CAN bus communication modes are used simultaneously, are communicated with RS485 by quick ballast
The air pressure value in cabin passes to control pressurer system device；The three-phase electricity output end interface of power grid is connected by power cable
The three-phase electricity input end interface of frequency converter；The three-phase electricity output end interface of frequency converter connects the three-phase of motor by power cable
Electrical input interface；The output end of motor passes through connection axis connection air compressor machine.
The input signal of control pressurer system device is handled by internal PLC program, according to treated signal
Power frequency air compressor machine and frequency conversion air compressor are controlled by PLC controller, realize that two kinds of energy-saving run schemes, scheme one: PLC control
Device controls the frequency transformation of frequency converter, the operation of air compressor machine energy-saving and frequency-variable；Scheme two: PLC controller controls power frequency air-compressor set
Start and add unloaded operation, combines frequency conversion air compressor to realize the energy-saving run of entire air-compressor set.
Scheme one: present invention firstly provides a kind of frequency of the fuzzy-adaptation PID control of frequency conversion air compressor variation strategies, are suitable for
Have the characteristics that the system of the gas pressure changes such as big fluctuation, time variation, uncertainty, non-linear, Fuzzy PID parameters self-adjusting control
Algorithm processed is in real time adjusted the parameter of PID controller to meet its demand for control.
The principle of tuning Fuzzy PID Controller is as shown in Fig. 2, by setting gas pressure in pneumatic manifold
Definite value obtains the pressure divergence e of the system and change rate ec of deviation, is then quantified compared with pressure measuring value, will
E and ec after quantization carry out blurring and fuzzy reasoning, realize the proportionality coefficient Δ KP to PID, integral finally by ambiguity solution
The Self-tuning System of coefficient delta KI and differential coefficient Δ KD, guarantee system all have different e and ec good static and dynamic
State property energy, fuzzy controller obtains the optimization running frequency of air compressor machine by operation, to realize air compressor machine according to practical use
Tolerance and pressure demand converting operation.
The fuzzy rule design of fuzzy controller is as follows: the domain after e, ec, Δ KP, Δ KI and Δ KD quantization is
Domain after the quantization for respectively outputting and inputting parameter is divided into 7 etc. by { -6, -5, -4, -3, -2, -1,0,1,2,3,4,5,6 }
Grade { bears big NB, bears middle NM, bear small NS, medium ZO, just small PS hits exactly PM, honest PB }, such as shown in Figure 3 and Figure 4.Work as e
When being negative big or negative middle, no matter how ec changes should eliminate deviation as early as possible, need so that supply gas pressure becomes larger, increase air demand increases
Add rotational speed of air compressor, increase control frequency, it is honest for taking output quantity；When e is negative it is small or medium when, mainly to the stability of system
It is controlled, to reduce overshoot, system is made to be restored to stable state as early as possible, pneumatics unit frequency is controlled according to deviation variation rate,
When ec is negative, pressure difference has the tendency that increase, and compressor rotary speed needs to increase, and control frequency also needs to increase accordingly, when ec is positive
When, the trend that pressure difference is reduced need to suitably be reduced the control frequency of air compressor.Control law when deviation is negative is same
The case where sample is positive suitable for deviation.
The resolution ratio of Triangleshape grade of membership function is higher, so e and ec selects Triangleshape grade of membership function, as shown in Figure 3；
The subordinating degree function of Δ KP, Δ KI and Δ KD these three output parameters, both ends are using the adjusting preferable Gaussian degree of membership of effect
Function, remaining uses Triangleshape grade of membership function, as shown in Figure 4
Scheme two: devising an air compressor machine clustered control strategy, and the strategy is as follows:
In quick ballasting system, the air compressor machine for system gas supply has four, wherein one spare.When hoisting operation, three
Platform air compressor machine comes into operation successively, once air compressor machine starts, they will be in loading or unloading state always, until lifting is complete
At.As shown in figure 5, power frequency air-compressor set uses benched spillway face, so-called stair like control strategy in former quickly ballasting system
Be exactly each air compressor machine plus the stepped distribution of unloading pressure, adjacent two compressor plus unloading pressure be in increasing trend.
A, B, C power frequency air compressor machine plus/unloading pressure is respectively 0.14/0.17Mpa, 0.17/0.20Mpa, 0.20/0.26Mpa.
Simulation transformation is carried out to power frequency air-compressor set staged clustered control strategy set forth above, proposes work-frequency conversion joint
Formula air-compressor set clustered control strategy, used in frequency conversion strategy become using the parameter adaptive fuzzy that hereinbefore proposes
Frequency control strategy.The present invention program as shown in fig. 6, wherein C power frequency air compressor machine is changed to D frequency conversion air compressor, protect by A, B power frequency air compressor machine
Hold constant, rated power, rated discharge amount, the rated discharge pressure of D frequency conversion air compressor are identical as C air compressor machine.
The present invention devises the quick ballasting system Energy Saving Control scheme based on Semi-submersible type hoisting platform operations typical condition,
The quick ballasting system of Semi-submersible type hoisting platform is the complication system of the components such as integrated air compressor machine, pipeline, a ballast tank, with pressure
Contracting air carries out row and carries to adjust the floading condition of platform.Air-compressor set is the maximum energy consumption user during quick pressure carries, from sky
Two angles of press frequency control and multiple air compressors clustered control comprehensively consider, and design is able to satisfy hoisting operation typical condition
Energy Saving Control scheme.The Application of frequency conversion technique of parameter adaptive fuzzy is proposed work-in system, and according to actual condition
Frequency conversion association type air-compressor set clustered control scheme, achievees the purpose that energy-saving run while guaranteeing platform security.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (7)
1. a kind of quick ballasting system, which is characterized in that mainly by air-compressor set, frequency converter, quick ballast tank, pressure sensor
It is formed with control pressurer system, control pressurer system is connect with air-compressor set, frequency converter and quick ballast tank respectively, pressure control
System is by air-compressor set start and stop and unloading command, frequency converter frequency is added to instruct, and passes to controller, and complete by controller
The starting of power frequency air compressor machine, stopping, load, offloading functions and frequency conversion air compressor frequency converter frequency change function；By fast ram compression
The air pressure value for carrying cabin passes to control pressurer system, and the air pressure value of quick ballast tank is tested by pressure sensor.
2. quick ballasting system according to claim 1, which is characterized in that further include motor, the three-phase electricity output of power grid
The three-phase electricity input end interface of end interface connection frequency converter；The three-phase electricity of the three-phase electricity output end interface connection motor of frequency converter is defeated
Enter end interface；The output end of motor passes through connection axis connection air compressor machine.
3. quick ballasting system according to claim 1 or 2, which is characterized in that the air-compressor set is screw pneumatics
Unit.
4. a kind of quick ballasting system air-compressor set energy-saving control method based on claims 1 or 2, which is characterized in that control
Device controls the frequency transformation of frequency converter, by the frequency changing method of fuzzy-adaptation PID control to the frequency conversion air compressor of air-compressor set into
Row control, is in real time adjusted the parameter of PID controller by Fuzzy PID parameters self-adjusting control algolithm, specifically includes, and walks
Rapid one, by compared with pressure measuring value, obtaining the pressure divergence e of system to gas pressure setting value in pneumatic manifold
And the change rate ec of deviation, then quantified；Step 2, by after quantization e and ec carry out blurring and fuzzy reasoning；Step
Rapid three, it is realized by ambiguity solution to proportionality coefficient Δ KP, the integral coefficient Δ KI of PID and the Self-tuning System of differential coefficient Δ KD, step
Rapid four, fuzzy controller obtains the running frequency of frequency conversion air compressor by operation.
5. quick ballasting system air-compressor set energy-saving control method according to claim 4, which is characterized in that the step
In two, the design of the fuzzy rule of fuzzy controller is as follows: e, ec, Δ KP, Δ KI and Δ KD quantify after domain be-
6, -5, -4, -3, -2, -1,0,1,2,3,4,5,6 }, domain after the quantization for respectively outputting and inputting parameter is divided into 7 grades,
{ big NB is born, middle NM is born, bears small NS, medium ZO, just small PS hits exactly PM, honest PB }, the NB of e, ec are { -6, -5, -4 }, Δ
The NB of KP, Δ KI and Δ KD are { -6, -5, -4, -3 }, the NM of each parameter is { -6, -5, -4, -3, -2 }, the NS of each parameter equal
ZO for { -4, -3, -2, -1,0 }, each parameter be { -2, -1,0,1,2 }, each parameter PS be { 0,1,2,3,4 }, each ginseng
Several PM is { 2,3,4,5,6 }, and the PB of e, ec are that the PB of { 4,5,6 }, Δ KP, Δ KI and Δ KD are { 3,4,5,6 }, works as e
When being negative big or negative middle, no matter how ec, which changes, should eliminate deviation, and supply gas pressure is made to become larger, and increase air demand, increase air compressor machine
Revolving speed increases control frequency, and it is honest for taking output quantity；When e is negative it is small or medium when, reduce overshoot, according to deviation variation rate
Pneumatics unit frequency is controlled, when ec is negative, compressor rotary speed needs to increase, and control frequency also needs to increase accordingly, when ec is timing, need
The control frequency of air compressor is reduced.Control law when deviation is negative is equally applicable to the case where deviation is positive.
6. quick ballasting system air-compressor set energy-saving control method according to claim 4 or 5, which is characterized in that described
In step 2, e and ec select Triangleshape grade of membership function；The subordinating degree function of Δ KP, Δ KI and Δ KD these three output parameters,
Both ends use Gaussian subordinating degree function, remaining uses Triangleshape grade of membership function.
7. quick ballasting system air-compressor set energy-saving control method according to claim 4 or 5, which is characterized in that pneumatics
Further include power frequency air-compressor set in unit, is made of power frequency air compressor machine A, power frequency air compressor machine B and frequency conversion air compressor D, air-compressor set
Using benched spillway face, each air compressor machine plus the stepped distribution of unloading pressure, adjacent two compressor plus unloading
Pressure is in increasing trend, and frequency conversion air compressor D is controlled by the frequency changing method of fuzzy-adaptation PID control.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110905813A (en) * | 2019-12-02 | 2020-03-24 | 上海优耐特斯压缩机有限公司 | Control method, device, storage medium and equipment of inverter type compressor |
| CN111308891A (en) * | 2020-02-28 | 2020-06-19 | 上海交通大学 | A kind of self-adaptive control method of water pressure of filter screen flushing unit of ballast water equipment |
| CN111736466A (en) * | 2020-06-08 | 2020-10-02 | 武汉理工大学 | A kind of optimal control method and system for fast discharge system of semi-submersible platform |
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| CN111736466A (en) * | 2020-06-08 | 2020-10-02 | 武汉理工大学 | A kind of optimal control method and system for fast discharge system of semi-submersible platform |
| CN111736466B (en) * | 2020-06-08 | 2021-09-10 | 武汉理工大学 | Optimal control method and system for quick load shedding system of semi-submersible platform |
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| CN113537644B (en) * | 2021-08-23 | 2022-07-08 | 中冶赛迪技术研究中心有限公司 | Multi-air compression station dynamic collaborative optimization regulation and control system and method |
| CN116176786A (en) * | 2023-01-03 | 2023-05-30 | 广船国际有限公司 | Ship damage and anti-sinking system, ship damage and anti-sinking method, and ship |
| CN117090758A (en) * | 2023-08-31 | 2023-11-21 | 上海宏赛自动化电气有限公司 | Energy-saving control method and system for air compressor |
| CN117090758B (en) * | 2023-08-31 | 2024-03-12 | 上海宏赛自动化电气有限公司 | Energy-saving control method and system for air compressor |
| CN117419039A (en) * | 2023-11-13 | 2024-01-19 | 武汉科技大学 | An air compressor system loading and unloading pressure setting value optimization method and system |
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