CN105937509A - Integrated automatic control hydraulic servomotor - Google Patents
Integrated automatic control hydraulic servomotor Download PDFInfo
- Publication number
- CN105937509A CN105937509A CN201610454025.8A CN201610454025A CN105937509A CN 105937509 A CN105937509 A CN 105937509A CN 201610454025 A CN201610454025 A CN 201610454025A CN 105937509 A CN105937509 A CN 105937509A
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- Prior art keywords
- oil
- hydraulic
- valve
- integration
- hydraulic jack
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Classifications
-
- 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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/024—Installations or systems with accumulators used as a supplementary power source, e.g. to store energy in idle periods to balance pump load
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
Abstract
An integrated automatic control hydraulic servomotor comprises an oil tank, an oil supply pipeline and an oil return pipeline, the oil supply pipeline passing a supply oil filter and the oil return pipeline passing a return oil filter are connected with the oil tank. The oil supply pipeline is connected with an energy accumulator and a hydraulic oil cylinder through an oil pump. The oil pump is connected with a motor used for driving the oil pump to act. A temperature sensor used for collecting the oil temperature and a heating control device used for temperature rising of oil liquid are arranged on the oil tank. A cylinder block of the hydraulic oil cylinder is connected with a pressure sensor used for collecting pressure in the hydraulic oil cylinder. A position sensor is connected to an output shaft of the hydraulic oil cylinder. The temperature sensor, the pressure sensor and the position sensor are all connected with a center controller. The signal output end of the center controller is connected with a motor driver and an electro-hydraulic change-over valve. The motor driver is connected with the motor in a control manner. The electro-hydraulic change-over valve is connected with the hydraulic oil cylinder in a control manner. By the adoption of the integrated automatic control hydraulic servomotor, site construction and maintenance are convenient, integrated integral mounting is conducted according to the mounting position, the requirement on site construction and maintenance is lowered, the fault probability is reduced, and automatic control can be achieved.
Description
Technical field
The present invention relates to hydraulic-driven field, be specifically related to a kind of integration and automatically control servomotor, it is possible to carry out linear drives or
Person rotates driving, inputs by receiving standard signal, position and load is carried out closed loop control, makes up to input setting value.
Background technology
Traditional Hydrauservo System include 1 hydraulic oil source, 2～4 hydraulic actuating mechanisms (also known as servomotor, point pitch and
Two kinds of function kinds of main inlet throttle-stop valve), defecator, energy storage equipment, regenerating unit and attemperating unit, use between each building block
Pipeline connects.Wherein, the hydraulic oil source in Hydrauservo System provides hydraulic power for hydraulic actuating mechanism, input servomotor
Hydraulic power is converted to the displacement movement output of piston rod, controls the steam valve of Steam Turbine.Energy storage equipment absorb, store and
Supplement the hydraulic energy of hydraulic oil source, the constant and traffic demand with the pressure that maintains system, filters, regenerates and attemperating unit maintains
Every quality index such as the cleannes of hydraulic medium and temperature.The pitch servomotor of Hydrauservo System implements closed loop control process,
After receiving the steam valve status command that control axis sets about steam turbine operation, SERVO CONTROL steam valve for steam turbine meets and sets
Fixed instruction, and keep synchronizing.The main inlet throttle-stop valve servomotor of Hydrauservo System implements closedown and the unlatching of steam valve.
The operation of Steam Turbine is on-the-spot, and the servomotor of Hydrauservo System is arranged at steam turbine valve, and other each parts are along ground
Face tiling ornaments, are connected by pipeline between parts, are referred to as piping installation.Piping installation (hydraulic oil pipe, cooling water pipe) is in length and breadth
Staggered, floor space is big.Distance between servomotor and hydraulic oil source in Hydrauservo System, some Steam Turbine run scene
Reaching more than 50 meters, some Site for Units are even up to 200 meters.Need to lay the hydraulic oil pipe 4 of difference in functionality～5, therefore
The interface and the joint that there is piping installation are a lot, and the oil seepage phenomena of system happens occasionally.
Traditional Hydrauservo System is primarily present techniques below problem:
1. hydraulic oil source provides the hydraulic power of 2～4 servomotors, due to the factors such as pipeline length, the hydraulic pump of hydraulic oil source configuration
Group, its hydraulic pump discharge is 63 liters/min, drives the power of motor to reach 30KW.Except between overhaul time, Hydrauservo System stops fortune
Outside row, being then year in year out, run the most continuously in remaining time, usual hydraulic oil source configuration two set hydraulic pump group takes turns to run；
2. the fault rate of legacy system servomotor is high, and its reason is that the cleannes of hydraulic medium are required very sensitive by electrohydraulic servo valve,
Cleannes decline may result in electrohydraulic servo valve and breaks down, and causes servomotor to control disabler；
3. the pipeline length of legacy system, port connections are more, and it is big that multinomial parts lay area, hydraulic medium seepage easily occurs,
Relate to bigger region.Steam turbine operation region high pressure, the steam pipework of high temperature are overlapping, and operating ambient temperature is high, anti-
Fire requirement of explosion proof is strict, for ensuring safety in production, it is necessary to employing phosphate ester fire resistant hydraulic oil, and phosphate ester fire resistant hydraulic oil price
Costliness, the hydraulic medium of this kind uses and requires height, owing to belonging to artificial oil, more serious to the damage ratio of environment；
For meeting the requirements such as the high pressure of legacy system, long pipeline, Oil-temperature control, long-play, on the one hand need to configure volume is
The fuel tank of about 1200 liters, the most then need to use water to implement to force cooling to hydraulic medium.Legacy system component item is many,
Volume is big, pipeline is long, and system for field installation workload is also big, before putting into operation must also through complicated, loaded down with trivial details cleaning process,
Meet after hydraulic medium meets cleannes standard SAE2 level or NAS6 level and can put into operation, so the installation of legacy system,
Cleaning frequency length, requirement are sternly, costly.In the Factory Building that servomotor runs, pipeline is crisscross, various facilities and the specification of equipment
Model a multitude of names, in upper, middle and lower multilamellar laying up in operation area, it is difficult to orderly arrangement, running space is narrow, region area
Rare with space, plant maintenance is relatively difficult.The pipeline simplified between oil sources station and hydraulic cylinder that existing improvement system has
Connect, and reduce the volume of hydraulic cylinder, but still suffer from following problem:
1, hydraulic circuit is not and outside air isolation, with air Long Term Contact in the case of, hydraulic oil can oxidation deterioration,
Reduce the life-span of hydraulic oil, increase maintenance；2, hydraulic pressure and machinery are only included, it is impossible to carry out intelligent automatic control；
3, needing on-the-spot professional to safeguard, maintenance requirement is high, on-the-spot properly functioning time be not required to professional, cause manpower
The wasting of resources；4, when fault occurs, it is impossible to carry out timely early warning, on-the-spot bigger loss can be caused.
Summary of the invention
Present invention aims to above-mentioned the problems of the prior art, it is provided that a kind of integration automatically controls servomotor, it is possible to
Hydraulic oil source, hydraulic control, hydraulic actuating mechanism and other adnexaes are become one, uses totally enclosed recycle oil
Road improves the service life of device, it is achieved servomotor performs corresponding action policy under different conditions.
To achieve these goals, the technical solution used in the present invention is:
Including fuel tank and respectively through the oil feed line being connected with fuel tank with return filter for oil strainer and return line, institute
The oil feed line stated connects accumulator and hydraulic jack respectively through oil pump, and oil pump is connected to drive the motor of its action；Described
Fuel tank be provided with the temperature sensor for gathering oil temperature and for fluid heat up heating control apparatus, the cylinder of hydraulic jack
Connect on body and have the pressure transducer for gathering in-cylinder pressure, the output shaft of hydraulic jack connects position sensor；Described
Temperature sensor, pressure transducer and position sensor be all connected with central controller, the signal output part of central controller is respectively
Connecting motor driver and electro-hydraulic switching valve, motor driver connects control motor, and electro-hydraulic switching valve connects control hydraulic jack.
Described accumulator connects oil feed line by normally opened fuel inlet ball check valve, connects back to oil pipe line by normally closed fuel-displaced ball valve simultaneously.
Be disposed with on the oil feed line of described fuel pump outlet check valve, filter and during for preventing oil pump from stopping fuel feeding returning
The non-return valve filled, hydraulic jack connects the oil feed line between filter and non-return valve.
Described oil feed line sequentially passes through overflow valve and is connected electro-hydraulic switching valve with counterbalance valve, and electro-hydraulic switching valve is arranged on hydraulic jack
Import and export pipeline between, pressure transducer is connected with the export pipeline of hydraulic jack through electro-hydraulic switching valve.
Described hydraulic jack is imported and exported and is respectively mounted rod chamber pressure measuring tie-in and rodless cavity pressure measuring tie-in on pipeline.
Hydraulic jack is imported and exported and is provided with reversal valve hydraulic lock on pipeline, and lock closed position is in the middle of hydraulic jack with reversal valve.
Described temperature sensor selects temperature-measuring range at-40 DEG C～the digital temperature sensor of 85 DEG C, heating control apparatus temperature control model
Enclose is 20 DEG C～60 DEG C.
Described central controller is connected to data storage and the high in the clouds data server analyzed.
Described position sensor selects LVDT, ball bar, magnetic grid, magnetostriction or stay wire displacement sensor.
Described electro-hydraulic switching valve selects servo valve or proportioning valve.
Compared with prior art, the present invention has following beneficial effect: by by hydraulic oil source, hydraulic control, hydraulic pressure
Actuator and other adnexaes become one, compact conformation, and volume is little, solve showing of conventional servomotor discrete system
Field construction is complicated, require the problems such as height, maintenance inconvenience and fault rate are high.Totally enclosed circulating oil path is used to greatly reduce oil circuit
Design complexities, improves oil circuit service life, extends site maintenance period.Can automatically be detected by central controller and sentence
Disconnected equipment running status also forms the data form of standard, is exported by network, i.e. can be with according to parameter configuration, automatically moving at oil
Perform corresponding strategies under machine different conditions, meet field demand.By the introducing of wireless sensor technology, simplify equipment wiring,
And can be according to field condition flexible arrangement monitoring point.Site operation of the present invention is easy to maintenance, only need to carry out whole according to installation site
Body is installed, it is not necessary to exclusively carry out the debugging maintenance of hydraulic system, greatly reduces the requirement that site operation is safeguarded, decreases event
The probability that barrier occurs, carries automatic control function simultaneously, reduces the requirement to control system.
Further, central controller of the present invention is connected to data storage and the high in the clouds data server analyzed, drawing of cloud service
Entering, servomotor passes through the mobile network such as Ethernet or 2G/3G/4G, oneself state is uploaded high in the clouds automatically, for user and system
Make business and check analysis, pushed by message, carry out basic operation service.On the basis of intelligent cloud services, analyze high in the clouds number
According to, and the real-time operating conditions of equipment is modeled, it is achieved predictive maintenance, reduces the chance of non-programmed halt.
Accompanying drawing explanation
The overall structure schematic diagram of Fig. 1 present invention；
In accompanying drawing: 1. accumulator；The normally opened fuel inlet ball check valve of 2-1.；The normally closed fuel-displaced ball valve of 2-2.；3. pressure transducer；4. non-return valve；5.
Filter；6. overflow valve；7. counterbalance valve；The most electro-hydraulic switching valve；9. reversal valve hydraulic lock；10. rod chamber pressure measuring tie-in；11. without bar
Chamber pressure measuring tie-in；12. hydraulic jacks；13. position sensors；14. central controllers；15. temperature sensors；16. computer heating control dresses
Put；17. check valves；18. motors；19. motor drivers；20. oil pumps；21. for oil strainer；22. return filters；23. oil
Case；24. high in the clouds data servers.
Detailed description of the invention
The present invention is described in further detail below in conjunction with the accompanying drawings.
See Fig. 1, the present invention structurally include fuel tank 23 and respectively through for oil strainer 21 and return filter 22 with
Fuel tank 23 connected oil feed line and return line, oil feed line connects accumulator 1 and hydraulic jack 12 respectively through oil pump 20,
Accumulator 1 connects oil feed line by normally opened fuel inlet ball check valve 2-1, connects back to oil pipe line by normally closed fuel-displaced ball valve 2-2 simultaneously.
Oil pump 20 is connected to drive the motor 18 of its action, and the oil feed line of oil pump 20 outlet is disposed with check valve 17, mistake
Filter 5 and the non-return valve 4 that fuel feeding recharges in time preventing oil pump 20 from stopping, hydraulic jack 12 connects filter 5 and check
Oil feed line between valve 4.Fuel tank 23 is provided with the temperature sensor 15 for gathering oil temperature and the heating heated up for fluid
Controlling device 16, the cylinder body of hydraulic jack 12 connects the pressure transducer 3 for gathering in-cylinder pressure, hydraulic jack 12
Output shaft on connect position sensor 13；During temperature sensor 15, pressure transducer 3 and position sensor 13 are all connected with
Centre controller 14, the signal output part of central controller 14 connects motor driver 19 and electro-hydraulic switching valve 8 respectively, and motor drives
Dynamic device 19 connects control motor 18, and electro-hydraulic switching valve 8 connects control hydraulic jack 12.Oil feed line sequentially passes through overflow valve 6
Be connected electro-hydraulic switching valve 8 with counterbalance valve 7, electro-hydraulic switching valve 8 is arranged between the import and export pipeline of hydraulic jack 12, and pressure passes
Sensor 3 is connected with the export pipeline of hydraulic jack 12 through electro-hydraulic switching valve 8.Pacify respectively on the import and export pipeline of hydraulic jack 12
Dress rod chamber pressure measuring tie-in 10 and rodless cavity pressure measuring tie-in 11, and also be provided with reversal valve hydraulic lock 9, lock closed position in
In the middle of hydraulic jack 12 and reversal valve.Central controller 14 is connected to data storage and the high in the clouds data server 24 analyzed.
In present system, each assembly is described as follows:
Accumulator 1 is used as auxiliary power source, and after starting motor 18, accumulator 1 is full of fluid, after motor 18 stops, storing
Can serve as Emergency power source by device 1, controlling hydraulic jack 12 for electro-hydraulic switching valve 8 provides high-pressure medium.
Normally opened fuel inlet ball check valve 2-1 and normally closed fuel-displaced ball valve 2-2 is high-pressure ball valve.Normally opened fuel inlet ball check valve 2-1 connects oil pump 20 He
Accumulator 1, for normally open；Normally closed fuel-displaced ball valve 2-2 connects accumulator 1 and fuel tank 23, for the normally off state, tight when occurring
During anxious situation, it is possible to quickly open, fluid in venting accumulator 1, protect security of system.
Pressure transducer 3 is for measuring the pressure in pipeline, and by the signal deciding of pressure transducer 3 whether central controller 14
Start motor 18 and carry out supplementary pressure, make under the state that system time is in steady operation, when oil circuit pressure is minimum, it is ensured that oil is dynamic
Machine also has been able to the total travel action at full capacity of 1.5 times.
Non-return valve 4 is when oil circuit pressure reaches to design the upper limit, and central controller 14 will stop motor 18, now by non-return valve 4
Ensure that fluid does not haves to recharge.
Filter 5 uses superimposed high-voltage filter, is arranged on electrohydraulic servo valve (or proportioning valve) rear end, for the most clear
Remove or stop that the impurity owing to the external world invades or component abrasion produces enters electrohydraulic servo valve (or proportioning valve).
Overflow valve 6, for setting the outlet pressure of oil pump 20, constant system flow, plays safeguard protection effect, this safety value energy
Enough manually regulated by this valve.
Counterbalance valve 7 is installed in oil returning tube, is used for keeping pipeline desirable pressure, increases the stationarity of hydraulic jack 12 action.
Electro-hydraulic switching valve 8 for being converted to spool position by the control signal of central controller 14, and then controls servomotor action,
Typically can use servo valve, proportioning valve etc..
The lock position of reversal valve hydraulic lock 9 is installed on the middle part of hydraulic jack 12 and reversal valve, when reversal valve is in middle position
Time, hydraulic lock is closed, and then the fluid in tight closure hydraulic cylinder two chamber.
Rod chamber pressure measuring tie-in 10 and rodless cavity pressure measuring tie-in 11 are mainly used in test fluid compressing cylinder 12 and pass in and out the pressure of oil cylinder.
The hydraulic jack 12 i.e. executable portion of servomotor.
Position sensor 13 uses the displacement transducers such as LVDT, ball bar, magnetic grid, magnetostriction, bracing wire in industry spot.
Central controller 14 is the brain of whole servomotor, by gathering the various sensor signals of servomotor, is driven by motor
Device 19 controls motor 18, is controlled the action of oil cylinder 12 by electro-hydraulic switching valve 8, and by the running status of servomotor by wireless
Upload cloud database.The information that intelligent controller gathers is as follows:
A: the signal of oil circuit pressure sensor 3, the surveyed tank temperature of temperature sensor 15, position sensor 13 collect
Oil cylinder position, the spool position of electro-hydraulic switching valve 8, this type of signal is running environment signal；
B: motor driver state, the standard diagnostics information in driver, it is used for judging motor 18 and oil pump 20 duty；
The diagnosis of C: own channels and duty, mainly include power supply voltage x current and input channel, output channel diagnosis；
D: service data calculates, the ascending curve of pressure when working including oil pump 20, temperature when heating control apparatus 16 works
Ascending curve, spool position when electro-hydraulic switching valve 8 works and the change curve of the surveyed oil cylinder position of position sensor 13；
Above four class data are uploaded to high in the clouds data server 24, for servomotor running state monitoring and remote maintenance.
Temperature sensor 15 is used for measuring tank temperature, and thermal resistance can be used to measure, it is possible to use digital temperature sensor,
Because servomotor working environment is typically between-40 DEG C～85 DEG C, selects the digital temperature sensor of this scope to meet and want
Ask, and digital transducer is easy to make power consumption wireless sensor, many places can be distributed in and carry out temperature acquisition more accurately.
Heating control apparatus 16 is apolegamy part, in order to ensure system work efficiency, should keep system temperature within the specific limits
(20 DEG C～60 DEG C), therefore when the temperature gathered is less than 20 DEG C, start computer heating control.
Check valve 17 is arranged on oil pump 20 and exports, and mainly prevents from surprisingly causing system fluid to flow backwards, causes hydraulic pump to invert.
Motor 18, for miniature requirement, uses staring torque not to be afraid of greatly the motor of stall, such as AC servo motor, reduces as far as possible
Volume, motor is mainly used in providing power, is increased by oil pump 20 by fluid and is stored in accumulator 1, for system, electricity
Machine work need not accurate control, possesses basic speed, Torque Control ability just.
Motor driver 19 for being converted to the control signal of motor by the control signal of intelligent controller.
Oil pump 20 selects gear pump or plunger displacement pump, pressurizes for hydraulic jack 12, and the mechanical energy of motor 18 is converted to hydraulic energy.
It is installed on oil absorption pipeline of oil pump, polluter remaining in filtering fuel tank for oil strainer 21.
Return filter 22 is installed on system oil return pipeline, filters the particulate pollutant produced due to component abrasion, so that flowing back to
Fluid keep cleaning.
Fuel tank 23 is Seal Design, it is to avoid whole oil circuit exposes in atmosphere.
High in the clouds data server 24, by gathering the data that central controller 14 is uploaded, monitors the running status of servomotor, and leads to
Cross later data analysis and provide maintenance support for client, improve the design of servomotor
Site operation of the present invention is easy to maintenance, and on-the-spot need to carry out integral installation according to installation site, it is not necessary to carry out hydraulic system
Debugging maintenance, greatly reduce site operation safeguard requirement, decrease fault occur probability；Carry intelligentized control method,
Reduce the requirement to control system；The introducing of cloud service, thus it is substantially reduced the requirement that device context is safeguarded, on-the-spot without specially
Industry personnel safeguard；By predictive maintenance, reduce the probability of client's non-programmed halt；Maintenance period is long, reduces on-the-spot dimension
The workload protected；Wireless senser simplifies equipment wiring, and can arrange monitoring point according to field condition, convenient and practical.
Claims (10)
1. integration automatically controls servomotor, it is characterised in that: include fuel tank (23) and respectively through for oil strainer (21)
The oil feed line being connected with fuel tank (23) with return filter (22) and return line, described oil feed line is through oil pump (20)
Connecting accumulator (1) and hydraulic jack (12) respectively, oil pump (20) is connected to drive the motor (18) of its action；Described
Fuel tank (23) be provided with the temperature sensor (15) for gathering oil temperature and for fluid heat up heating control apparatus (16),
Connect on the cylinder body of hydraulic jack (12) and have the pressure transducer (3) for gathering in-cylinder pressure, hydraulic jack (12) defeated
Position sensor (13) is connected on shaft；Described temperature sensor (15), pressure transducer (3) and position sensor (13)
Being all connected with central controller (14), the signal output part of central controller (14) connects motor driver (19) and electro-hydraulic respectively
Switching valve (8), motor driver (19) connects control motor (18), and electro-hydraulic switching valve (8) connects control hydraulic jack (12).
Integration the most according to claim 1 automatically controls servomotor, it is characterised in that: described accumulator (1) passes through
Normally opened fuel inlet ball check valve (2-1) connects oil feed line, connects back to oil pipe line by normally closed fuel-displaced ball valve (2-2) simultaneously.
Integration the most according to claim 1 automatically controls servomotor, it is characterised in that: described oil pump (20) exports
When being disposed with check valve (17), filter (5) on oil feed line and be used for preventing oil pump (20) from stopping, fuel feeding recharges
Non-return valve (4), hydraulic jack (12) connect filter (5) and non-return valve (4) between oil feed line.
4. automatically control servomotor according to the integration described in claim 1 or 3, it is characterised in that: described oil feed line depends on
Secondary being connected electro-hydraulic switching valve (8) through overflow valve (6) with counterbalance valve (7), electro-hydraulic switching valve (8) is arranged on hydraulic jack (12)
Import and export pipeline between, pressure transducer (3) is connected through the export pipeline of electro-hydraulic switching valve (8) with hydraulic jack (12).
Integration the most according to claim 4 automatically controls servomotor, it is characterised in that: described hydraulic jack (12)
Import and export and be respectively mounted rod chamber pressure measuring tie-in (10) and rodless cavity pressure measuring tie-in (11) on pipeline.
Integration the most according to claim 4 automatically controls servomotor, it is characterised in that: described hydraulic jack (12)
Importing and exporting and be provided with reversal valve hydraulic lock (9) on pipeline, lock closed position is in the middle of hydraulic jack (12) with reversal valve.
Integration the most according to claim 1 automatically controls servomotor, it is characterised in that: described temperature sensor (15)
Selecting temperature-measuring range at-40 DEG C～the digital temperature sensor of 85 DEG C, heating control apparatus (16) temperature control scope is 20 DEG C～60 DEG C.
Integration the most according to claim 1 automatically controls servomotor, it is characterised in that: described central controller (14)
It is connected to data storage and the high in the clouds data server (24) analyzed.
Integration the most according to claim 1 automatically controls servomotor, it is characterised in that: described position sensor (13)
Select LVDT, ball bar, magnetic grid, magnetostriction or stay wire displacement sensor.
Integration the most according to claim 1 automatically controls servomotor, it is characterised in that: described electro-hydraulic switching valve (8)
Select servo valve or proportioning valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610454025.8A CN105937509A (en) | 2016-06-21 | 2016-06-21 | Integrated automatic control hydraulic servomotor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610454025.8A CN105937509A (en) | 2016-06-21 | 2016-06-21 | Integrated automatic control hydraulic servomotor |
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| CN105937509A true CN105937509A (en) | 2016-09-14 |
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| CN201610454025.8A Pending CN105937509A (en) | 2016-06-21 | 2016-06-21 | Integrated automatic control hydraulic servomotor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110063023A (en) * | 2016-11-10 | 2019-07-26 | 西门子股份公司 | Method for monitoring the operation of rotating electric machine |
| CN111336248A (en) * | 2020-04-07 | 2020-06-26 | 中国北方车辆研究所 | Fault diagnosis method for hydraulic oil supply system of AMT (automated mechanical transmission) actuating mechanism |
| CN114321062A (en) * | 2021-12-24 | 2022-04-12 | 浙江华章科技有限公司 | Oil station hydraulic station pressure prediction and maintenance system |
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| CN114321062B (en) * | 2021-12-24 | 2023-07-14 | 浙江华章科技有限公司 | Oil station hydraulic pressure station pressure prediction and maintenance system |
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Application publication date: 20160914 |