CN107288953B - A kind of the servo-cylinder performance test methods and its test macro of adaptive damping - Google Patents
A kind of the servo-cylinder performance test methods and its test macro of adaptive damping Download PDFInfo
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- CN107288953B CN107288953B CN201610196467.7A CN201610196467A CN107288953B CN 107288953 B CN107288953 B CN 107288953B CN 201610196467 A CN201610196467 A CN 201610196467A CN 107288953 B CN107288953 B CN 107288953B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
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Abstract
The servo-cylinder performance test methods and system of adaptive damping, comprising steps of 1) collecting the damping ratio of AGC (Automatic Gage Control) servo-cylinder rolling machine system: ξh；2) middle spacer is set, the Coulomb friction damped coefficient in Load test framework between hydraulic side stay plate and middle spacer: C is collected0, collect load damping hydraulic cylinder parameter: D1/d1‑l1；3) pressure value of initial electromagnetic proportional pressure-reducing valve: P is set0；4) the Coulomb friction damping force between middle spacer and side stay plate: F is calculatedf0；5) damping ratio of identification and test system: ξ0；6) change the pressure of solenoid-operated proportional pressure reducing valve: P1, then the damping ratio of identification and test system: ξ1；7) step 6), the damping ratio of identification and test system are as follows: ξ are repeatedi；8) compare the damping ratio ξ of test macroiWith the damping ratio ξ of rolling machine systemh；9) pressure value P of solenoid-operated proportional pressure valve at this time is calculatedi: 10) adjust solenoid-operated proportional pressure reducing valve pressure value: Ph, that is, so that the damping ratio ξ of test macroiWith the damping ratio ξ of rolling machine systemhIt is equal, then quiet, dynamic performance testing is carried out to AGC servo-cylinder.Operation of the present invention is easy, and measuring accuracy is high.
Description
Technical field
The present invention relates to hydraulic servo oil cylinder testing fields, and especially, the present invention relates to one kind to be suitable for strip-mill strip
The test method and its test macro that hydraulic pressing or the static state for pushing to servo-cylinder are tested with dynamic property.
Background technique
The present invention relates to the online static, dynamic testing method of hydraulic device, the strip for being particularly suitable for metallurgy industry is rolled
Machine gauge automatic control AGC (Automatic Gage Control) system hydraulic pressing pushes to the dynamic and static of servo-cylinder
Test.Term includes hydraulic cylinder (Hydraulic cylinder), test (Test).
In modern steel rolling equipment, the adjusting of the roll gap of milling train is completed using Hydrauservo System.Hydraulic servo
Valve oil cylinder is one of the key element of rolling mill screwdown Hydrauservo System, and the quality of performance directly affects Hydrauservo System
It works normally, to finally influence the quality of Strip.The existing test for rolling mill AGC being depressed or being pushed to servo-cylinder is main
Including two aspects of static test and dynamic test, static test mainly include the internal leakage of servo-cylinder, external leakage, band carry it is dynamic
Indexs, the dynamics such as frictional force, starting pressure test the test etc. of the mainly bandwidth including servo-cylinder.
In the test process of servo-cylinder, during such as the test of band loading friction force and dynamic are tested, often
AGC servo-cylinder is placed in a closed Load test framework, is loaded by Load test framework to AGC servo-cylinder.It is logical
Often, during AGC servo-cylinder is tested, in order to guarantee that the extension bar of servo-cylinder can connect with the top of Load test framework
Touching, usually putting a middle spacer between servo-cylinder and load price markup guarantees the close contact between them, intermediate
The height of cushion block is different according to the specification of servo-cylinder and changes.However, in the test process of AGC servo-cylinder, test system
The accuracy when size of the damping of system is to the performance and test of system has a great impact, and is a very important parameter.
And in the existing test to AGC servo-cylinder, the damping of test macro is substantially an invariant, can not basis
The difference of servo hydraulic cylinder specification and change, and the damping of the servo-cylinder of different milling train at work is different, so surveying
Operating condition when operating condition when examination works from servo-cylinder is different, this just causes very big influence to the test result of servo-cylinder.
For this purpose, the test method above to AGC servo-cylinder there are aiming at the problem that, in combination with rolling mill AGC servo oil
The test process at cylinder working scene, this neighborhood need a kind of AGC servo-cylinder test method of variable-metric system damping.It is described
Test method can be according to the damping ratio size of the rolling machine system of tested AGC oil cylinder real work, to set the resistance of test macro
Buddhist nun is more equal than with the damping ratio of real work rolling machine system, to guarantee that operating condition when test works in milling train with practical oil cylinder
Operating condition it is with uniformity, i.e., damping ratio and the damping ratio of rolling machine system of guarantee test macro with it is equal.This ensures that
The accuracy and practicability of test result save very big equipment investment to enterprise, bring huge economic benefit.
Summary of the invention
The problem of for the existing test process to AGC servo-cylinder, the present invention is in combination with working site
Actual test process, propose a kind of AGC servo-cylinder test process for different size, can according to need change survey
Test system damping a kind of AGC servo-cylinder test method, guarantee test macro damping ratio and rolling machine system damping ratio with
It is equal, it not only can guarantee the accuracy and practicability of test result, but also very big oil cylinder test equipment investment can be saved, can bring aobvious
The economic benefit of work.
The present invention provides one kind easy to operate, high degree of automation, measuring accuracy high and as needed dynamic debugging system
The frictional damping test philosophy and test method equal with damping ratio in actual work come damping ratio when making to test.
In order to achieve the above-mentioned object of the invention, the servo-cylinder performance test methods of adaptive damping of the invention use following skill
Art scheme:
A kind of servo-cylinder performance test methods of adaptive damping, are suitable for AGC servo-cylinder dynamic and static characteristic is surveyed
Test system can dynamically change the test of test macro damping, and using such a test macro, the test macro is specifically included that
AGC servo-cylinder loading system, Hydrauservo System, signal acquisition and processing system, which is characterized in that the test method
It comprises the following steps that
The damping ratio of step 1) collection AGC servo-cylinder real work rolling machine system: ξh(0<ξh<1.0)；
Step 2) setting be connected between oil cylinder and test chassis, the middle spacer for transmitting loading force, collect load
Coulomb friction damped coefficient in rack between hydraulic side stay plate and middle spacer: C0(0<C0< 1.0) load damping force hydraulic, is collected
The specifications parameter of cylinder: D1/d1-l1；(D1, d1, l1Respectively indicate piston diameter, diameter of piston rod, the piston of load damping hydraulic cylinder
Range, unit: m)
Step 3) sets the pressure value of initial electromagnetic proportional pressure-reducing valve by industrial personal computer, signal processing system according to operating condition
Are as follows: P0(P0< test macro maximum working pressure)；
Step 4) calculates the area of load damping hydraulic cylinder rodless cavity:
Calculate the Coulomb friction damping force (unit: newton N) between middle spacer and side stay plate:
Ff0=P0×A0×C0(2)；
(A0Indicate the area of load damping hydraulic cylinder rodless cavity, unit: m2)
Step 5) issues corresponding signal to servo valve using testing signal process system, and the servo-cylinder of acquisition system is living
Plug displacement, pressure signal recognize (electromagnetism at this time to the method that test macro uses System Discrimination according to the experimental data of acquisition
Proportional pressure-reducing valve pressure is P0) test macro damping ratio: ξ0；
Step 6) further, changes the pressure of solenoid-operated proportional pressure reducing valve are as follows: P1(unit: Pa) calculates middle pad at this time
Coulomb friction damping force suffered by block: Ff1(unit: N) picks out the practical resistance of test macro with the method for System Discrimination again
Buddhist nun's ratio: ξ1；
Step 7) repeats step 6), tests out a series of pressure of solenoid-operated proportional pressure reducing valves: PiAnd its corresponding coulomb rubs
Wipe damping force Ffi, identification actual test system damping ratio are as follows: ξi；
Step 8) compares the damping ratio ξ of test macroiWith the damping ratio ξ of practical rolling machine systemh, until ξhWith ξiUntil ξhWith
ξiRelative deviation ε in the range of setting until, i.e. ε=| ξh--ξi|/ξh, here, take ε < 5.0%；
Step 9) passes through the test macro damping ratio ξ measurediWith Coulomb friction damping force FfiRelationship extrapolate test
System damping ratio is ξhWhen, the size of corresponding Coulomb friction damping force are as follows: Ffh, Extrapolation goes out solenoid-operated proportional pressure valve at this time
Pressure value:
Step 10) adjusts solenoid-operated proportional pressure reducing valve pressure value are as follows: Ph(Ph< test macro maximum working pressure), even if test
The damping ratio of system is equal with the damping ratio of real work rolling machine system, then carries out static and dynamic to AGC servo-cylinder again
Performance test.
The servo-cylinder performance test methods of a kind of adaptive damping according to the present invention, which is characterized in that
In step 1), because often there is very big mistake with actual value in the damping ratio theoretical calculation of real work rolling machine system
Difference, to obtain
The damping ratio of real work rolling machine system is taken, determines practical rolling machine system using the method for System Discrimination here
Damping ratio: ξh。
3. in step 8), if the damping ratio ξ of practical rolling machine systemhWith the damping ratio ξ of test macroiRelative deviation is being set
In fixed smaller range, then stop identification and test system damping ratio ξi；If ξhWith ξiRelative deviation not in the range of setting then
Continue to repeat step 7), until ξhWith ξiUntil relative deviation is in the range of setting.
The servo-cylinder performance test methods of a kind of adaptive damping according to the present invention, which is characterized in that in step 10)
Later, to the test of different AGC servo-cylinders, then the damping ratio of test macro and the resistance of real work rolling machine system may be implemented
Buddhist nun is than equal, the effect for the AGC servo-cylinder adaptive damping for realizing test macro for different size.
A kind of servo-cylinder Performance Test System of adaptive damping, is suitable for AGC servo-cylinder dynamic and static characteristic is surveyed
Test system can dynamically change the test of test macro damping, and the test macro includes: AGC servo-cylinder loading system, hydraulic
Servo-system, signal acquisition and processing system, which is characterized in that
The loading system includes: to be set in Load test framework 11, is the load damping hydraulic cylinder 7 of sequence setting, intermediate
Cushion block 10, side stay plate 13, and the AGC servo-cylinder 12 etc. positioned at 10 lower part of middle spacer,
The Hydrauservo System provides power source for AGC servo-cylinder, and servo-cylinder extension bar is made to stretch out or retract,
Carrying out load to middle spacer as load damping hydraulic cylinder can change frictional resistance suffered by test macro.
The servo-cylinder Performance Test System of a kind of adaptive damping according to the present invention, which is characterized in that
The Load test framework is the Load test framework of enclosed, provides loading force for AGC servo-cylinder, is having servo-cylinder
It is tested under the operating condition of load,
The Hydrauservo System provides power source for servo-cylinder, and Hydrauservo System is by the automatically controlled signal of test macro
It is transformed into the hydraulic pressure signal of Hydrauservo System, to control the movement of servo-cylinder and the adjustment of each pressure of system,
The Hydrauservo System include: hydraulic pump 1, overflow valve 2, electrohydraulic servo valve 6, solenoid-operated proportional overflow pressure reducing valve 5,
Solenoid-operated proportional pressure reducing valve 3, three-position four-way electromagnetic directional valve 4,
The electric signal that signal processing system issues is transformed into hydraulic pressure signal to control servo oil by the electrohydraulic servo valve 6
The displacement and pressure size of cylinder, are allowed to form closed-loop control system.
The servo-cylinder Performance Test System of a kind of adaptive damping according to the present invention, which is characterized in that
The AGC servo-cylinder rod chamber inputs the hydraulic pressure value of a fixation pressure, servo-cylinder rod chamber
Pressure size is set, is adjusted by solenoid proportional pressure reducing and relief valve 5,
The pressure of the hydraulic damping loading hydraulic cylinder carries out dynamic setting, adjustment, institute by solenoid-operated proportional pressure reducing valve 3
Change with damping force size is also to be controlled by solenoid-operated proportional pressure reducing valve,
The loading and unloading process of the load damping hydraulic cylinder is controlled by three-position four-way electromagnetic directional valve 4, is controlled
Signal is given by signal processing system,
The system pressure value of entire Hydrauservo System is adjusted by overflow valve 2, and hydraulic pump 1 provides system for system
Required pressure and flow.
The servo-cylinder Performance Test System of a kind of adaptive damping according to the present invention, which is characterized in that
The signal acquisition and processing system include: pressure sensor 8, magnetic scale 9, signal acquisition and processing system, industry control
Machine etc..Further, it is characterized in that the pressure of acquisition system, displacement signal, signal processing system is by signal amplification, operation, so
Relevant command signal is issued to hydraulic control valve afterwards.
The loading system is it is characterized in that it specifically includes that Load test frameworkLoad damping hydraulic cylinder 7., middle spacer
10., side stay plateAGC servo-cylinderDeng further, it is characterised in that Hydrauservo System provides for AGC servo-cylinder
Power source makes servo-cylinder extension bar stretch out or retract, and the Load test framework of enclosed provides loading force for AGC servo-cylinder, makes
Servo-cylinder is tested under the operating condition with load.Damping hydraulic cylinder is loaded it is characterized in that by adding to middle spacer
It carries to provide variable damping force when test for test macro, finally makes the damping ratio of test macro and real work milling train
Damping ratio is equal.
The Hydrauservo System it is characterized in that it include hydraulic pump 1., overflow valve 2., electrohydraulic servo valve 6., electromagnetism ratio
Example overflow pressure reducing valve 5., solenoid-operated proportional pressure reducing valve 3., three-position four-way electromagnetic directional valve 4. etc., further, it is further characterized in that
Hydrauservo System provides power source for servo-cylinder, and the automatically controlled signal of test macro is transformed into hydraulic watch by Hydrauservo System
The hydraulic pressure signal of dress system, to control the movement of servo-cylinder and the adjustment of each pressure of system.The electrohydraulic servo valve is 6.
The electric signal that signal processing system issues is transformed into hydraulic pressure signal to control the displacement of servo-cylinder and pressure size, is allowed to shape
At closed-loop control system.The AGC servo-cylinder rod chamber inputs the hydraulic pressure value of a fixation pressure, and servo-cylinder has
5. the pressure size of rod cavity is set, is adjusted by solenoid proportional pressure reducing and relief valve.
3. the pressure of the hydraulic damping loading hydraulic cylinder carries out dynamic setting, adjustment by solenoid-operated proportional pressure reducing valve,
So the change of damping force size is also to be controlled by solenoid-operated proportional pressure reducing valve.The load of hydraulic damping loading hydraulic cylinder with unload
4. load process is controlled by three-position four-way electromagnetic directional valve, control signal is given by signal processing system.It is entirely hydraulic to watch
2. the system pressure value of dress system is adjusted by overflow valve, pressure 1. hydraulic pump provides system for system needed for and stream
Amount.
The signal acquisition and processing system it is characterized in that it include: pressure sensor 8., magnetic scale 9., signal acquisition and
Processing system, industrial personal computer etc..Further, it is characterized in that the pressure of acquisition system, displacement signal, signal processing system is by signal
Then amplification, operation issue relevant command signal to hydraulic control valve.
For in the problems in AGC servo-cylinder dynamic, static test, the present invention can be according to test servo-cylinder not
The same damping ratio size to change test macro, to make AGC servo-cylinder during the test can be according to measurement condition and work
The different sizes for changing damping for making milling train make AGC servo to can more show out the true performance characteristic of AGC servo-cylinder
The static state of oil cylinder and the test result of dynamic property are more accurate.The accuracy of test result can be improved in achievement of the invention,
More testing costs are saved for enterprise, also bring huge economic benefit for enterprise.
Detailed description of the invention
Fig. 1 is a kind of servo-cylinder Performance Test System schematic diagram of adaptive damping of the invention.
Fig. 2 be a kind of adaptive damping of the invention servo-cylinder Performance Test System hydraulic damping loading hydraulic cylinder,
The type of attachment schematic diagram of side stay plate and Load test framework.
In figure, 1 is hydraulic pump, and 2 be overflow valve, and 3 be solenoid-operated proportional pressure reducing valve, and 4 be three-position four-way electromagnetic directional valve, and 5 are
Solenoid-operated proportional overflow pressure reducing valve, 6 be electrohydraulic servo valve, and 7 be the hydraulic damping loading hydraulic cylinder being set in Load test framework 11,8
It is magnetic scale for pressure sensor, 9,10 be middle spacer, and 11 be Load test framework, and 12 watch for the AGC positioned at 10 lower part of middle spacer
Oil cylinder is taken, 13 be side stay plate.
Specific embodiment
Embodiment
The application process of technology in order to further illustrate the present invention, by taking the test of the AGC servo-cylinder of a certain specification as an example,
The test method of AGC servo-cylinder adaptive damping is discussed in detail:
A) in variable damping loading system, a kind of company of side stay plate Yu hydraulic damping loading hydraulic cylinder and test chassis is provided
Connect form as shown in Figure 2 (being not limited to this form):
B) the hydraulic damping ratio of AGC servo-cylinder work rolling machine system: ξ is collectedh；
B1) often there is very big error with actual value in the damping ratio theoretical calculation of real work rolling machine system, so, it is
The damping ratio for obtaining real work system, determines the damping ratio of practical rolling machine system using the method for System Discrimination here:
ξh=0.52；
C) the frictional damping coefficient in Load test framework between hydraulic side stay plate and middle spacer: C is collected0=0.3, collection liquid
The specifications parameter piston diameter D of pressure drag Buddhist nun's loading hydraulic cylinder1, diameter of piston rod d1, piston range l1:
B1 the area of load damping hydraulic cylinder rodless cavity) is calculated:
D) pressure value of initial proportion pressure reducing valve 3. is set according to operating condition by industrial personal computer, signal processing system are as follows: P0=
3.0×106Pa；
E) the Coulomb friction damping force between middle spacer and side stay plate is calculated:
Ff0=P0×A0×C0=3 × 106× 0.00785 × 0.3=7.065 × 103N (5)
F) signal, the displacement of acquisition system, force signal, according to acquisition are issued to servo valve using testing signal process system
Experimental data test macro (pressure P at this time is picked out by the method for System Discrimination0=3.0 × 106Pa damping ratio):
ξ0=0.3；
G) further, the pressure of scaling up pressure reducing valve 3. are as follows: P1=4.0 × 106Pa calculates middle spacer institute at this time
The Coulomb friction damping force received are as follows: Ff1=9.420 × 103N picks out the reality of test macro with the method for System Discrimination again
Damping ratio are as follows: ξ1=0.45；
H) f) step is repeated, a series of pressure of proportional pressure-reducing valves 3.: P is measured2=5.0 × 106Pa and its corresponding library
Human relations friction damping force Ff2=11.775 × 103, identification actual test system damping ratio: ξi=0.55；
I) compare the damping ratio ξ of test macroiWith the damping ratio ξ of practical rolling machine systemh=0.52, practical rolling machine system
Damping ratio ξhWith the damping ratio ξ of test macroi=0.55 difference then stops identification and test system resistance in 5.0% range of setting
Buddhist nun's ratio ξi；
J) the test macro damping ratio ξ by having measurediWith Coulomb friction damping force FfiRelationship extrapolate test macro
Damping ratio is ξhWhen, the size of corresponding Coulomb friction damping force are as follows: Ffh≈11.3×103N, Extrapolation go out ratio pressure at this time
The pressure value of power valve 3. are as follows:
K) proportional pressure-reducing valve 3. pressure value is adjusted are as follows: Ph=4.8 × 106Pa, even if the damping ratio of test macro and practical work
The damping ratio for making rolling machine system is equal.
L) to the test of different AGC servo-cylinders, then the resistance of test macro damping ratio Yu real work milling train may be implemented
For Buddhist nun than equal, such test macro realizes the effect of adaptive damping, is the test result and real work operating condition one of servo-cylinder
It causes.
AGC servo-cylinder is tested according to scene, technical solution of the present invention is practical, and achieves significant
Effect, can further genralrlization into the test of AGC servo-cylinder performance, popularization and application foreground is than broader.
Claims (8)
1. a kind of servo-cylinder performance test methods of adaptive damping are suitable for AGC (Automatic Gage Control) and watch
The test of test macro damping can dynamically be changed by taking oil cylinder dynamic and static characteristic test macro, be using such a test
System, the test macro specifically include that AGC servo-cylinder loading system, Hydrauservo System, signal acquisition and processing system,
It is characterized in that, the test method comprises the following steps that
Step 1) collects the damping ratio of AGC servo-cylinder work rolling machine system: ξh, 0 < ξh<1.0；
Step 2) setting be connected between oil cylinder and test chassis, the middle spacer for transmitting loading force, collect Load test framework
Coulomb friction damped coefficient between interior hydraulic side stay plate and middle spacer: C0, 0 < C0< 1.0, collect load damping hydraulic cylinder
Specifications parameter: D1/d1-l1；D1, d1, l1The piston diameter, diameter of piston rod, piston for respectively indicating load damping hydraulic cylinder are maximum
Stroke, unit: m,
Step 3) sets the pressure value of initial electromagnetic proportional pressure-reducing valve by industrial personal computer, signal processing system according to operating condition are as follows: P0,
P0< test macro maximum working pressure；
Step 4) calculates the area of load damping hydraulic cylinder rodless cavity:
Calculate the Coulomb friction damping force F between middle spacer and side stay platef0, unit: newton N:
Ff0=P0×A0×C0(2)；
A0Indicate the area of load damping hydraulic cylinder rodless cavity, unit m2,
Step 5) issues corresponding signal, the servo-cylinder piston position of acquisition system to servo valve using testing signal process system
It moves, pressure signal, according to the experimental data of acquisition, to the method that test macro uses System Discrimination, identification solenoid-operated proportional decompression
Valve pressure is P0When test macro damping ratio: ξ0；
The pressure of step 6) change solenoid-operated proportional pressure reducing valve are as follows: P1, unit: Pa calculates Coulomb friction suffered by middle spacer at this time
Damping force: Ff1, unit: N picks out the practical damping ratio of test macro: ξ with the method for System Discrimination again1；
Step 7) repeats step 6), tests out a series of pressure of solenoid-operated proportional pressure reducing valves: PiAnd its corresponding Coulomb friction resistance
Buddhist nun's power Ffi, identification and test system damping ratio are as follows: ξi；
Step 8) compares the damping ratio ξ of test macroiWith the damping ratio ξ of practical rolling machine systemh, until ξhWith ξiRelative deviation ε
Until in the range of setting, i.e. ε=| ξh- ξi|/ξh, ε < 5.0% is taken here；
Wherein, i is the subscript of the damping ratio of test macro, indicates that i-th recognizes to obtain the damping ratio of test macro；H is to indicate
The subscript of the damping ratio of practical rolling machine system,
Step 9) passes through the test macro damping ratio ξ measurediWith Coulomb friction damping force FfiRelationship extrapolate test macro
Damping ratio is ξhWhen, the size of corresponding Coulomb friction damping force are as follows: Ffh, Extrapolation goes out the pressure of solenoid-operated proportional pressure valve at this time
Force value:
Step 10) adjusts solenoid-operated proportional pressure reducing valve pressure value are as follows: Ph, Ph< test macro maximum working pressure, even if test macro
Damping ratio it is equal with the damping ratio of real work rolling machine system, static and dynamic property then is carried out to AGC servo-cylinder again
It can test.
2. a kind of servo-cylinder performance test methods of adaptive damping as described in claim 1, which is characterized in that
It is because the damping ratio theoretical calculation of real work rolling machine system often has very big error with actual value in step 1)
The damping ratio for obtaining real work rolling machine system, determines the damping of practical rolling machine system using the method for System Discrimination here
Than: ξh。
3. a kind of servo-cylinder performance test methods of adaptive damping as described in claim 1, which is characterized in that
In step 8), if the damping ratio ξ of practical rolling machine systemhWith the damping ratio ξ of test macroiRelative deviation in setting
In smaller range, then stop identification and test system damping ratio ξi；If ξhWith ξiRelative deviation not in the range of setting, then
Continue to repeat step 7), until ξhWith ξiRelative deviation in the range of setting until.
4. a kind of servo-cylinder performance test methods of adaptive damping as described in claim 1, which is characterized in that
After step 10), the damping ratio and practical work of test macro is then may be implemented in test to different AGC servo-cylinders
The damping ratio for making rolling machine system is equal, and test macro is made to realize the AGC servo-cylinder adaptive damping for different size in this way
Effect.
5. a kind of servo-cylinder performance test methods of adaptive damping as described in claim 1, which is characterized in that
The AGC servo-cylinder loading system includes: the load damping force hydraulic for being set in Load test framework (11), being sequentially arranged
Cylinder (7), middle spacer (10), side stay plate (13), and it is located at the AGC servo-cylinder (12) of middle spacer (10) lower part,
The Hydrauservo System provides power source for AGC servo-cylinder, so that servo-cylinder extension bar is stretched out or is retracted, by adding
Load damping hydraulic cylinder, which carries out load to middle spacer, can change frictional resistance suffered by test macro.
6. a kind of servo-cylinder performance test methods of adaptive damping as claimed in claim 5, which is characterized in that
The Load test framework is the Load test framework of enclosed, provides loading force for AGC servo-cylinder, makes servo-cylinder with load
Operating condition under tested,
The Hydrauservo System provides power source for servo-cylinder, and Hydrauservo System changes the automatically controlled signal of test macro
At the hydraulic pressure signal of Hydrauservo System, to control the movement of servo-cylinder and the adjustment of each pressure of system,
The Hydrauservo System includes: hydraulic pump (1), overflow valve (2), electrohydraulic servo valve (6), solenoid-operated proportional overflow pressure reducing valve
(5), solenoid-operated proportional pressure reducing valve (3), three-position four-way electromagnetic directional valve (4),
The electric signal that signal processing system issues is transformed into hydraulic pressure signal to control servo oil by the electrohydraulic servo valve (6)
The displacement and pressure size of cylinder, are allowed to form closed-loop control system.
7. a kind of servo-cylinder performance test methods of adaptive damping as claimed in claim 5, which is characterized in that
The AGC servo-cylinder rod chamber inputs the hydraulic pressure value of a fixation pressure, the pressure of servo-cylinder rod chamber
Size is set, is adjusted by solenoid-operated proportional overflow pressure reducing valve (5),
The pressure of the load damping hydraulic cylinder carries out dynamic setting, adjustment by solenoid-operated proportional pressure reducing valve (3), so damping
The change of power size is also to be controlled by solenoid-operated proportional pressure reducing valve,
The loading and unloading process of the load damping hydraulic cylinder is controlled by three-position four-way electromagnetic directional valve (4), control letter
It is number given by signal processing system,
The system pressure value of entire Hydrauservo System is adjusted by overflow valve (2), and hydraulic pump (1) provides system for system
Required pressure and flow.
8. a kind of servo-cylinder performance test methods of adaptive damping as claimed in claim 5, which is characterized in that
The signal acquisition and processing system include: pressure sensor (8), magnetic scale (9), signal acquisition and processing system, industry control
Then signal amplification, operation are given hydraulic control valve to issue phase by machine, the pressure of acquisition system, displacement signal, signal processing system
The command signal of pass.
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| CN115059662B (en) * | 2022-06-09 | 2024-07-02 | 杭州电子科技大学 | Nonlinear friction resistance simulation test device and method for inlet guide vane electrohydraulic servo system |
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| CN107288953A (en) | 2017-10-24 |
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