CN109914497A - Jack-up unit Structure Damage Simulation and test device - Google Patents
Jack-up unit Structure Damage Simulation and test device Download PDFInfo
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- CN109914497A CN109914497A CN201910260316.7A CN201910260316A CN109914497A CN 109914497 A CN109914497 A CN 109914497A CN 201910260316 A CN201910260316 A CN 201910260316A CN 109914497 A CN109914497 A CN 109914497A
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Abstract
A kind of jack-up unit Structure Damage Simulation can be used for jack-up unit health monitoring and test device.Main purpose is to provide a kind of lesion mimic and test device that can be applied in offshore engineering structure health monitoring.It is characterized by comprising self-elevating ocean platform model, load loading unit, computer system, servo drive controller and signal receiving units；Wherein, self-elevating ocean platform model includes hull, pile foundation, pedestal, No. 1 spud leg, No. 2 spud legs and No. 3 spud legs；Load loading unit includes servo-actuating device and bracket；Computer system be used for input servo drive controller transmitting come load signal go forward side by side line frequency signal processing；Servo drive controller provides power supply for servo motor, controls the revolving speed and torque of servo motor；Signal receiving unit by the first to the 6th vibrating sensor receive model vibration signal, by signal processor be filtered and signal enhanced processing after input computer system, obtain the frequency characteristic of model via D/A module and signal processing unit.
Description
Technical field
The present invention relates to one of offshore engineering structure detection technique field devices, specifically, being to be related to one kind
It can be used for the Structure Damage Simulation and test device of jack-up unit health monitoring.
Background technique
Marine hull structure long service is in severe marine environment, and the reciprocation by various load, such as wind
Load, ocean current, wave etc., sometimes also by unexpected storms such as earthquake, typhoon, tsunami, ship collisions, structure itself is further suffered from
The effect of the influences such as environmental corrosion, marine organisms attachment, seafloor scour.Under these severe load environment long terms, it is easy
Various damages are generated, the bearing capacity of structure is reduced, it is in addition to this, more and more with the fast development of Offshore Oil Industry
Ocean platform come into operation, while also there are many active service platform already close to even more than projected life, in order to ensure structure
Integrality and safety, guarantee the life security of personnel and the smooth development and production of offshore oil, protect huge investment and
Prevent marine environmental pollution, it is necessary to reevaluate to structure.But current platform monitoring is not only costly, vulnerable to weather, sea
The influence of the factors such as condition, and monitoring result can not form mapping relations with platform damage position and degree.If can exist in advance
It is tested on one model with jack-up unit with similar characteristic, to certain structural damage of setting, passes through test dress
It sets and corresponding response data can be obtained, can then establish the corresponding relationship of different damages and response.It can be with finally by the likelihood ratio
Obtained mapping relations are applied in the breakdown diagnosis of platform prototype.But there are no such simulation and tests in the prior art
Device.
Summary of the invention
In order to solve the technical problems mentioned in the background art, the present invention, which provides one kind, can be used for jack-up unit health
The Structure Damage Simulation and test device of monitoring, this kind of device can simulate the rigidity reduction of jack-up unit pile foundation, thus
Allow to complete the dynamic experimental test for damaging jack-up unit using the device.
The technical scheme is that this kind can be used for Structure Damage Simulation and the survey of jack-up unit monitoring structural health conditions
Trial assembly is set, including self-elevating ocean platform model, load loading unit, computer system, servo drive controller and signal connect
Unit is received, is unique in that:
The self-elevating ocean platform model includes hull, pile foundation, pedestal, No. 1 spud leg, No. 2 spud legs and No. 3 spud legs.
Hull is according to the geometric similarity of 1:80 according to actual platform than miniature simplification platform model；The top tape of hull
There is the groove of mountable weight gain counterweight for simulating variation of the hull in weight.
Pile foundation includes first connecting rod, the second connecting rod, several Aluminum cylindricals, adjustable hexagon socket head cap screw, locking
Nut, horizontal spring, spring top end cap, stake end spring, spring lower end cap, stake end spring safetied pin and spring stop piece.
Wherein, first connecting rod and the second connecting rod are spatially mutually perpendicular to, and first connecting rod is located at the top of the second connecting rod, and two
A connecting rod runs through No. 1 spud leg, No. 2 spud legs and No. 3 spud legs, and the both ends of two connecting rods are cased with spring stop piece respectively, for mentioning
For one plane of constraint of spring, spring stop piece is connected with Aluminum cylindrical；One end cap of horizontal spring is on an Aluminum cylindrical, aluminium
Rounding column plays cross-brace to horizontal spring, prevents horizontal spring to fluctuate up and down, another end cap of horizontal spring is another
It on root Aluminum cylindrical, is fixed between Aluminum cylindrical and first connecting rod by locking nut, is stayed among two Aluminum cylindricals
It is at regular intervals so that horizontal spring is able to carry out compression, pass through locking nut between adjustable hexagon socket head cap screw and Aluminum cylindrical
It is fixed, and adjustable hexagon socket head cap screw can be adjusted the pretightning force of horizontal spring, to prevent spring from occurring loosening shape
Condition.
The pile foundation and No. 1 spud leg, No. 2 spud legs and No. 3 spud legs by spring top end cap and spud leg lower thread into
Row is threadedly coupled, and is connected bolt by pile foundation between pile foundation and pedestal and is fixed, spring lower end cap and pedestal pass through lower part
End cap clamping screw is fixed；It is made of outside pile foundation rectangular frame, provides the active force of shoe and soil for spud leg；No. 1 stake
Leg, No. 2 spud legs and No. 3 spud legs are that hollow cylinder, 3 spud legs and hull are carried out by upper locking nut and lower locking nut
It is fixedly connected.
The load loading unit includes servo-actuating device and bracket, and the load loading unit is used in level
Direction applies load to hull.
The servo-actuating device includes that pressure sensor, actuator, servo motor, servo-actuating device and hull connect
Component and servo-actuating device and bracket connection component.Wherein, servo-actuating device and bracket and branch in bracket connection component
Seat is connected by hexagon socket head cap screw, and support is connect with rear end connector by pin shaft, and rear end connector is solid using hexagon socket head cap screw
Fixed, the connector of rear end connector and pressure sensor is connected through a screw thread, and pressure sensor and actuator are connected by 8 bolts
It connects, actuator is connected with servo motor by 4 hexagon socket head cap screws, and the connector and front end connector of servo motor pass through screw thread
Connection, front end connector are connected with forward mount by pin shaft, and pin shaft is fixed by circlip, and forward mount and hull pass through interior six
Corner bolt is fixed, and front end connector is locked by bolt.
The servo drive controller provides power supply by cable for servo motor, with control servo motor revolving speed and
Torque, the servo drive controller receives the pressure and displacement signal in horizontal length direction by cable, with Setting signal
It is compared to obtain deviation signal, adjusts to obtain control signal by PID, on the one hand readjust servo motor, on the other hand
Control signal is inputted into computer system.
The computer system has following each internal module, the load come for inputting servo drive controller transmitting
Signal go forward side by side line frequency signal processing；
Load parameter module and A/D conversion module, by human-computer interaction interface according to requiring setting load basic parameter and PID tune
Parameter instruction is saved, the load basic parameter of setting and the instruction of PID adjustment parameter are converted digital signal by A/D conversion module
To be transferred to the servo drive controller after analog signal；
Control unit module, then the revolving speed of servo motor and torque that the servo drive controller is fed back loaded to load it is single
Member output；
Signal processing module, load loading unit obtain real load signal or displacement letter after the load of self-elevating ocean platform model
Number being transferred to servo drive controller by pressure sensor or displacement sensor by analog signal converts number by D/A module
Word signal simultaneously is compared real load signal or displacement signal to obtain deviation signal with Setting signal, is adjusted by PID
It to control signal, is on the one hand converted again by A/D, control signal is transferred to servo motor, is compensated in a small range
It adjusts；
The load parameter digital signal that load parameter module inputs is converted into simulating by the computer system by A/D module
This analog signal is input to the revolving speed and torque that servo drive controller is used to control the servo motor, Jin Ertong by signal
Cross the output that actuator (41) realize unsteady horizontal load, by front end connector (37) and forward mount (39) by load with
The form horizontal force in face is on the self-elevating ocean platform model；
The signal receiving unit is received the vibration signal of model by the first to the 6th vibrating sensor, passes through signal
Processor be filtered and signal enhanced processing after input computer system, obtained via D/A module and signal processing unit
The frequency characteristic of model.
The invention has the following beneficial effects: this kind of devices can be used for testing the band damage jack up under external load effect
The dynamic response of platform, and the reduction of damage model analog spud leg rigidity and pile foundation rigidity weaken two kinds of damages.The device
The acceleration transducer of middle setting, wherein spud leg top and the bottom each 3,2xAxis and oneyAxis is combined, and is rung by vibration
It should test, the dynamic characteristic of different damage models can be tested, and extract experimental data abundant.
Detailed description of the invention:
Fig. 1 is the main view of self-elevating ocean platform model of the present invention and load applying unit and the schematic diagram of top view.
Fig. 2 is the schematic diagram of self-elevating ocean platform model pile foundation part of the invention.
Fig. 3 is the signal of the connection component of servo-actuating device and self-elevating ocean platform model and bracket of the invention
Figure.
Fig. 4 is the main view of servo-actuating device of the invention and the schematic diagram of top view.
Fig. 5 is the layout drawing of sensor of the invention.
Fig. 6 is operating process schematic diagram of the invention.
1- upper locking nut in figure, 2- lower locking nut, 3- pile foundation, 4- pedestal, 5-1 spud leg, 6-2 spud leg, 7-3
Number spud leg, 8- servo-actuating device and hull connection component, 9- servo-actuating device, 10- servo-actuating device are connect with bracket
Component, 11- bracket, 12- hull, 13- first connecting rod, the second connecting rod of 14-, 15- Aluminum cylindrical, the adjustable interior hexagonal of 16-
Bolt, 17- locking nut, 18- horizontal spring, 19- spring top end cap, 20- end springs, 21- spring lower end cap, 22-
Lower end cap clamping screw, 23- end spring safetied pins, 24- pile foundation connect bolt, 25- spud leg lower thread, 26- bullet
Spring baffle, 27- hexagon socket head cap screw, 28- support, 29- pin shaft, the rear end 30- connector, 31- hexagon socket head cap screw, connector after 32-,
Connector before 33-, 34- hexagon socket head cap screw, 35- circlip, the front end 36- pin shaft, the front end 37- connector, 38- hexagon socket head cap screw, 39-
Forward mount, 40- pressure sensor, 41- actuator, 42- servo motor, the first vibrating sensor of 43-, the vibration of 44- second pass
Sensor, 45- third vibrating sensor, the 4th vibrating sensor of 46-, the 5th vibrating sensor of 47-, the 6th vibrating sensor of 48-.
Specific embodiment:
The present invention will be further explained below with reference to the attached drawings:
As shown in Fig. 1 to Fig. 5, the dynamic characteristic test device of this kind of analog jack-up unit damage, including jack up ocean
Platform model, load loading unit, computer system, servo drive controller and signal receiving unit.It is unique in that:
The self-elevating ocean platform model includes hull 12, pile foundation 3,6, No. 3 spud legs of spud leg of spud leg 5,2 of pedestal 4,1
7。
Hull 12 is the simplification platform model miniature according to actual platform, and hull material is aluminium, and entire model is by prototype ruler
Modest ability is 70.36m, and width 76.0m, moldeed depth is the hull of 9.45m, and the Proportionality design according to geometric similarity ratio 1:80 is a length of
880mm, width 950mm, moldeed depth are the simplification platform model of 118mm, and spud leg horizontal spacing is 594mm, and spud leg longitudinal pitch is
572mm, variation of groove analog platform of the top with installation weight gain counterweight in weight.
Pile foundation 3 include first connecting rod 13, the second connecting rod 14, Aluminum cylindrical 15, adjustable hexagon socket head cap screw 16,
Locking nut 17, horizontal spring 18, spring top end cap 19, stake end spring 20, spring lower end cap 21, the locking of stake end spring
Pin 23 and spring stop piece 26.Wherein, first connecting rod 13 and the second connecting rod 14 are spatially mutually perpendicular to, first connecting rod
13 are located at the top of the second connecting rod 14, and two connecting rods run through 5, No. 2 spud leg 6 and No. 3 spud legs 7 of No. 1 spud leg, two connecting rods
Both ends be cased with spring stop piece 26 respectively, it is possible to provide one plane of constraint of spring, spring stop piece 26 are connected with Aluminum cylindrical 15；Water
For one end cap of coach spring 18 on an Aluminum cylindrical 15, this Aluminum cylindrical plays cross-brace to horizontal spring, prevents water
Coach spring fluctuates up and down, and another end cap of horizontal spring is on another Aluminum cylindrical.Aluminum cylindrical and first connecting rod 13 it
Between be fixed by locking nut 17, stayed among two Aluminum cylindricals at regular intervals so that horizontal spring is able to carry out pressure
Contracting is fixed between adjustable hexagon socket head cap screw 16 and Aluminum cylindrical by locking nut, and adjustable hexagon socket head cap screw 16 can
It is adjusted with the pretightning force to horizontal spring 18, to prevent spring from loosening situation occur.
The pile foundation and 5, No. 2 spud leg 6 and No. 3 spud legs 7 of No. 1 spud leg pass through spring top end cap 19 and spud leg lower end spiral shell
Line 25 is threadedly coupled, and it is fixed by pile foundation to connect bolt 24 between pile foundation 3 and pedestal 4, spring lower end cap 21 with
Pedestal 4 is fixed by lower end cap clamping screw 22；It is made of outside pile foundation rectangular frame, provides shoe and soil for spud leg
Active force；No. 1 spud leg, No. 2 spud legs and No. 3 spud legs are hollow cylinder, and 3 spud legs and hull pass through upper locking nut 1
It is fixedly connected with lower locking nut 2.
The load loading unit includes servo-actuating device 9 and bracket 11, and the load loading unit is used for
Horizontal direction applies load to hull 12.
The servo-actuating device 9 include pressure sensor 40, actuator 41, servo motor 42, servo-actuating device with
Hull connection component 8 and servo-actuating device and bracket connection component 10.Wherein, servo-actuating device and bracket connection component 10
In bracket 11 and support 28 connected by hexagon socket head cap screw 27, support 28 and rear end connector 30 pass through the first pin shaft 29 company
It connects, rear end connector 30 is fixed using hexagon socket head cap screw 31, and rear end connector 30 and the connector 32 of pressure sensor 40 pass through
It is threadedly coupled, pressure sensor 40 and actuator 41 are bolted by 8, and actuator 41 and servo motor 42 pass through in 4
Hex bolts 41a connection, connector 33 and the front end connector 37 of servo motor 42 are connected through a screw thread, 37 He of front end connector
Forward mount 39 is connected by the second pin shaft 36, and the second pin shaft 36 is fixed by circlip 35, and forward mount 39 and hull 12 pass through
Hexagon socket head cap screw 38 is fixed, and front end connector 37 is locked by bolt 34.
The servo drive controller is that servo motor 42 provides power supply by cable, to control the revolving speed of servo motor
And torque, the servo drive controller receives the pressure and displacement signal in horizontal length direction by cable, with given letter
It number is compared to obtain deviation signal, adjusts to obtain control signal by PID, on the one hand readjust servo motor, another party
Face will control signal and input computer system.On the one hand servo-driver provides power supply for servo motor, on the other hand will calculate
The parameter instruction of machine system converts digital signals into analog signal by A/D, controls the revolution and torque of servo motor, in turn
The output that unsteady horizontal load is realized by actuator, eventually by front end flexural pivot component and forward mount by unsteady level
Load is applied on hull model in the horizontal direction, and single-point active force is converted to face active force, to be applied to from liter
Formula platform model.
As described in Figure 6, the computer system has following each internal module, passes for inputting servo drive controller
Pass come load signal go forward side by side line frequency signal processing；
Load parameter module and A/D conversion module, by human-computer interaction interface according to requiring setting load basic parameter and PID tune
Parameter instruction is saved, the load basic parameter of setting and the instruction of PID adjustment parameter are converted digital signal by A/D conversion module
To be transferred to the servo drive controller after analog signal；
Control unit module, then the revolving speed of servo motor and torque that the servo drive controller is fed back loaded to load it is single
Member output；
Signal processing module, load loading unit obtain real load signal or displacement letter after the load of self-elevating ocean platform model
Number being transferred to servo drive controller by pressure sensor or displacement sensor by analog signal converts number by D/A module
Word signal simultaneously is compared real load signal or displacement signal to obtain deviation signal with Setting signal, is adjusted by PID
It to control signal, is on the one hand converted again by A/D, control signal is transferred to servo motor, is compensated in a small range
It adjusts；
The load parameter digital signal that load parameter module inputs is converted into simulating by the computer system by A/D module
This analog signal is input to the revolving speed and torque that servo drive controller is used to control the servo motor, Jin Ertong by signal
The output that actuator realizes unsteady horizontal load is crossed, it is front end connector and forward mount that load is horizontal in the form of face
It acts on the self-elevating ocean platform model.
The signal receiving unit receives the vibration of model by the first vibrating sensor to the 6th vibrating sensor
Signal, by signal processor be filtered and signal enhanced processing after input computer system, via D/A module and signal
Processing unit obtains the frequency characteristic of model.
When it is implemented, the horizontal spring group and stake end spring of pile foundation part can simulate the stake soil in sea area mutually jointly
Effect；Wherein, for simulating soil to the action of lateral load of stake soil, two placed inside horizontal spring deposit horizontal spring
In the aluminum hollow cylinder of a fixed spacing, one is fixed on spud leg one end, another is fixed on the outer wall of pile foundation, be in order to
Guarantee the level of horizontal spring, it is ensured that the stability of horizontal spring.The stake end spring of pile foundation plays simulation soil to stake soil
Longitudinal loading effect positions spring using upper and lower end cap, 4 in order to avoid stake end spring because positional shift occurs for torsion
End cap and spring coupling part position is fixed in a clamping screw, prevents spring from falling off, upper end cover using thread connecting mode with
Spud leg is attached, and lower cover is then connected by screw bolts and is fixed on the base end cap.Pile foundation reduction is different by replacement
The horizontal spring and stake end spring of rigidity change the rigidity of pile foundation, for simulating the rigidity of pile foundation weaken operating condition, can be with
Only change stake end spring or only changes horizontal spring or change simultaneously the rigidity of horizontal spring and stake end spring.
The spud leg of the present apparatus is detachable, and the screw thread of 1m long is arranged at spud leg top, using upper lower locking nut by hull and spud leg
It is fixed, simulate the operating condition of different water depth by adjusting the height of hull, and the structure of spud leg is using hollow cylinder, it can be with
Change the overall stiffness of the model of jack-up unit by replacing the spud leg of different wall thickness, it is whole to simulate jack-up unit with this
The operating condition of body rigidity reduction.
When simulating hull collsion damage using the present apparatus, hull can be simulated by manufacturing crackle or deformation on spud leg
Collision, the form of hull collsion damage model is complicated, first is that by different spud legs and in spud leg different location system
Make crackle, second is that by different spud legs and spud leg different location manufacture deformation, third is that by control crack and
The quantity of deformation spud leg.
It is load simulated that the parameter of obtained marine environment test load is input to marine environment by servo-electric loading device
In computer control unit in system, load parameter and PID adjustment parameter are set, instruction is issued to mould to servo-driver
Quasi- marine environment load, this method can be non-at any angle fixed in accurate simulation different size, different frequency and horizontal direction
Chang Zaihe can effectively simulate the environmental load under normal and extreme seas operating condition.
First vibrating sensor to the 6th vibrating sensor is acceleration transducer, and position is located at hull
On the spud leg of lower part,xDirection arranges the first, second two sensors,yTo a 3rd sensor is arranged, in stake
The the 4th to the 6th acceleration transducer corresponding with hull lower position is arranged on the spud leg of basic top.
The present apparatus applies different environment to the jack-up unit model of different damages using servo-electric loading device and carries
Lotus excitation, the response data of platform model is transferred to by computer control unit by acceleration transducer, to response data into
Row analysis processing obtains the dynamic characteristic of the jack-up unit model under this damage, and will be developed by similarity relation
Non-destructive tests new method expand to jack-up unit prototype structure, so that it is guaranteed that jack-up unit safety and steady run.
Claims (1)
1. a kind of jack-up unit Structure Damage Simulation that can be used for jack-up unit health monitoring and test device, including rise certainly
Formula offshore platform model, load loading unit, computer system, servo drive controller and signal receiving unit, feature exist
In:
The self-elevating ocean platform model includes hull (12), pile foundation (3), pedestal (4), No. 1 spud leg (5), No. 2 spud legs
(6) and No. 3 spud legs (7)；
Hull (12) is according to the geometric similarity of 1:80 according to actual platform than miniature simplification platform model；The top of hull (12)
Groove of the portion with mountable weight gain counterweight is for simulating variation of the hull in weight；
Pile foundation (3) includes first connecting rod (13), the second connecting rod (14), several Aluminum cylindricals (15), adjustable interior six
Corner bolt (16), locking nut (17), horizontal spring (18), spring top end cap (19), stake end spring (20), spring lower part
End cap (21), stake end spring safetied pin (23) and spring stop piece (26)；Wherein, first connecting rod (13) and the second connecting rod
(14) it is spatially mutually perpendicular to, first connecting rod (13) is located at the top of the second connecting rod (14), and two connecting rods run through No. 1
Spud leg (5), No. 2 spud legs (6) and No. 3 spud legs (7), the both ends of two connecting rods are cased with spring stop piece (26) respectively, for providing
One plane of constraint of spring, spring stop piece (26) are connected with Aluminum cylindrical (15)；One end cap of horizontal spring (18) is in an aluminium
On rounding column (15), Aluminum cylindrical (15) plays cross-brace to horizontal spring (18), prevents horizontal spring (18) wave up and down
Dynamic, another end cap of horizontal spring (18) is on another Aluminum cylindrical (15), Aluminum cylindrical (15) and first connecting rod (13)
Between be fixed by locking nut (17), stayed among two Aluminum cylindricals (15) at regular intervals so that horizontal spring (18)
It is able to carry out compression, is adjusted between hexagon socket head cap screw (16) and Aluminum cylindrical (15) and is fixed by locking nut (17), and
Adjustable hexagon socket head cap screw (16) can be adjusted the pretightning force of horizontal spring (18), to prevent spring from occurring loosening shape
Condition；
The pile foundation and No. 1 spud leg (5), No. 2 spud legs (6) and No. 3 spud legs (7) pass through under spring top end cap (19) and spud leg
End screw thread (25) is threadedly coupled, and is connect bolt (24) by pile foundation between pile foundation (3) and pedestal (4) and is fixed, spring
Lower end cap (21) and pedestal (4) are fixed by lower end cap clamping screw (22)；It is made of outside pile foundation rectangular frame, is
The active force of spud leg offer shoe and soil；No. 1 spud leg (5), No. 2 spud legs (6) and No. 3 spud legs (7) are hollow cylinder, described 3
A spud leg is fixedly connected with hull by upper locking nut (1) and lower locking nut (2)；
The load loading unit includes servo-actuating device (9) and bracket (11), and the load loading unit is used for
Horizontal direction applies load to hull (12)；
The servo-actuating device (9) includes pressure sensor (40), actuator (41), servo motor (42), servo-drive machine
Structure and hull connection component (8) and servo-actuating device and bracket connection component (10)；Wherein, servo-actuating device and bracket connect
Bracket (11) and support (28) in connected components (10) are connected by hexagon socket head cap screw (27), support (28) and rear end connector
(30) it is connected by pin shaft (29), rear end connector (30) is fixed using hexagon socket head cap screw (31), rear end connector (30) and pressure
The connector (32) of force snesor (40) is connected through a screw thread, and pressure sensor (40) and actuator (41) are connected by 8 bolts
It connects, actuator (41) and servo motor (42) pass through 4 hexagon socket head cap screw (41a) connections, the preceding connector of servo motor (42)
(33) it is connected through a screw thread with front end connector (37), front end connector (37) and forward mount (39) are connected by pin shaft (36)
It connects, pin shaft (36) is fixed by circlip (35), and forward mount (39) and hull (12) are fixed by hexagon socket head cap screw (38), front end
Connector (37) is locked by bolt (34)；
The servo drive controller is that servo motor (42) provide power supply by cable, to control turning for servo motor (42)
Speed and torque, the servo drive controller by cable receive horizontal length direction pressure and displacement signal, with give
Signal is compared to obtain deviation signal, adjusts to obtain control signal by PID, on the one hand readjusts servo motor, another
Aspect will control signal and input computer system；
The computer system has following each internal module, the load signal come for inputting servo drive controller transmitting
Line frequency signal of going forward side by side processing；
Load parameter module and A/D conversion module, by human-computer interaction interface according to requiring setting load basic parameter and PID tune
Parameter instruction is saved, the load basic parameter of setting and the instruction of PID adjustment parameter are converted digital signal by A/D conversion module
To be transferred to the servo drive controller after analog signal；
Control unit module, then the revolving speed of servo motor and torque that the servo drive controller is fed back loaded to load it is single
Member output；
Signal processing module, load loading unit obtain real load signal or displacement letter after the load of self-elevating ocean platform model
Number being transferred to servo drive controller by pressure sensor or displacement sensor by analog signal converts number by D/A module
Word signal simultaneously is compared real load signal or displacement signal to obtain deviation signal with Setting signal, is adjusted by PID
It to control signal, is on the one hand converted again by A/D, control signal is transferred to servo motor, is compensated in a small range
It adjusts；
The load parameter digital signal that load parameter module inputs is converted into simulating by the computer system by A/D module
This analog signal is input to the revolving speed and torque that servo drive controller is used to control the servo motor, Jin Ertong by signal
Cross the output that actuator (41) realize unsteady horizontal load, by front end connector (37) and forward mount (39) by load with
The form horizontal force in face is on the self-elevating ocean platform model；
The signal receiving unit is received the vibration signal of model by the first to the 6th vibrating sensor, passes through signal
Processor be filtered and signal enhanced processing after input computer system, obtained via D/A module and signal processing unit
The frequency characteristic of model.
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| CN105464064A (en) * | 2016-01-11 | 2016-04-06 | 南通振华重型装备制造有限公司 | System and method for cantilever beam heavy-duty test of self-elevating drilling platform |
| CN106500959A (en) * | 2016-11-03 | 2017-03-15 | 东北石油大学 | A kind of device for simulating ocean environment load |
| CN106596040A (en) * | 2016-11-03 | 2017-04-26 | 东北石油大学 | Marine environment load simulating method |
| CN109056850A (en) * | 2018-07-16 | 2018-12-21 | 武汉船用机械有限责任公司 | The monitoring method and monitoring system of the spud leg load of self-elevating ocean platform |
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