CN104454715B - A kind of secondary regulation system based on electrical control - Google Patents
A kind of secondary regulation system based on electrical control Download PDFInfo
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- CN104454715B CN104454715B CN201410723804.4A CN201410723804A CN104454715B CN 104454715 B CN104454715 B CN 104454715B CN 201410723804 A CN201410723804 A CN 201410723804A CN 104454715 B CN104454715 B CN 104454715B
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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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
-
- 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
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20546—Type of pump variable capacity
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
- F15B2211/212—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being accumulators
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
nullThe present invention discloses a kind of secondary regulation system based on electrical control，It includes hydraulic accumulator、Electricity storage element、Drive motor、First dynamoelectric machine、Second dynamoelectric machine、First electric machine controller、Second electric machine controller、Inverter、First pump/motor、Second pump/motor、Reversal valve、Shuttle valve、Relief valve、Controller etc.，The present invention uses pump/motor and dynamoelectric machine to replace traditional hydraulic transformer or proportional reversing valve as constant pressure source in secondary regulation system and load pressure and the coupling of flow，Hydraulic accumulator and load pressure is mated by the discharge capacity of regulated variable pump/motor，The speed of executor is controlled by the rotating speed of regulation dynamoelectric machine，In addition the occasion driving load pressure higher than hydraulic accumulator pressure is realized by many quadrant jobs of dynamoelectric machine and pump/motor，Solve traditional secondary regulation system be difficult in adapt to be the executor of linear drives and be difficult to the weak point driving load pressure higher than hydraulic accumulator pressure.
Description
Technical field
The present invention relates to drive system technical field, refer in particular to kind of an a kind of secondary based on electrical control
Regulation system.
Background technology
In the face of significant problems such as global energy crisis, environmental pollutions, various mechanized equipments are needed badly should
Pressure to energy-conserving and environment-protective, the mechanized equipment theory of environmental type the most gradually appears, and makes great efforts in technology
On seek new solution.At present conventional hydraulic system is energy-conservation mainly Secondary Regulation Technology, open
Several typical hydraulic control systems such as center, load-sensitive, minus flow and positive flow control.Wherein
Secondary Regulation Technology has begun to be applied at present.
As far back as 1977, professor Nikolaus of Hamburg, Germany national defense industry university i.e. proposed secondary hydrostatic
The concept of regulation technology.The original paper that changes mechanical energy is hydraulic energy can will be referred to as in hydraulic system by we
Original paper, is referred to as secondary component by the original paper of mechanical energy Yu the mutual phase transformation of hydraulic energy.Secondary hydrostatic is adjusted
Joint technology is i.e. a kind of energy adjustment technology with secondary component as core.
Secondary hydrostatic regulation research experienced by hydraulic direct switch through speed control, hydraulic pilot speed regulating control,
The different object such as the control of machine liquid speed regulating control, electro-hydraulic rotating speed, electro-hydraulic controlling angle, electro-hydraulic direct torque
Control and with PID control, the combination of the advanced control algorithms such as ANN Control, obtain preferably
Dynamic characteristic, significantly reduce system installed power, it is thus achieved that significantly energy-saving effect.
But owing to the object of Secondary Regulation Technology research is the constant pressure network coupled based on pressure, therefore liquid
Some parameter of pressure executive component allows for being adjusted, thus and bearing power coupling.In perseverance
Hydraulic actuator in pressure network network is the hydraulic motor/pump of scalable discharge capacity, and therefore this technology can be applied
Drive in revolution, but owing to the rotating speed of hydraulic pump/motor controls necessary closed loop control, due to hydraulic system
The feature of strong nonlinearity, the rotating speed of hydraulic pump/motor is difficult to accurately control, and is starting and braking simultaneously
There is bigger impact in moment.And for doing the hydraulic cylinder moved along a straight line, due to cutting of hydraulic cylinder
Area is immutable, and therefore Secondary Regulation Technology is not directly adaptable to use the system of linear motion.At present
Researcher typically use following two scheme: a kind of use the method accessing hydraulic transformer to realize
The coupling of the transformation load that constant pressure oil source and doing moves along a straight line, but be introduced into hydraulic transformer and can make be
System structure is complicated, is unfavorable for the production application of reality；Another is that adoption rate reversal valve is directly controlled
System, but not mating due to hydraulic accumulator pressure and load pressure, necessarily cause at proportional reversing valve
Valve port on produce substantial amounts of throttling loss, in the program, proportional reversing valve can not supercharging simultaneously, it is desirable to
Hydraulic accumulator pressure is higher than load pressure.
Summary of the invention
In view of this, the present invention is directed to the disappearance of prior art existence, its main purpose is to provide one
Planting secondary regulation system based on electrical control, this system structure is relatively easy, can reduce throttling damages
Consume, can be suitably used for the load pressure occasion higher than hydraulic accumulator pressure, be capable of turntable simultaneously and drive
Dynamic torque and the regulation of rotating speed.
In order to achieve the above object, the technical solution used in the present invention is:
A kind of secondary regulation system based on electrical control, it includes driving motor, hydraulic pump, safety
Valve, inverter, check valve, electricity storage element, the first electric machine controller, the first dynamoelectric machine,
First pump/motor, reversal valve, the first pressure transducer, shuttle valve, oil cylinder, the second motor control
Device, the second dynamoelectric machine, the second pump/motor, decelerator, turntable, hydraulic accumulator,
Two pressure transducers, other executor's fluid power system and controller；
Motor and hydraulic pump is driven coaxially to be mechanically coupled；First pump/motor and the first dynamoelectric machine
Coaxially it is mechanically coupled；Second pump/motor, the power shaft of decelerator and the second dynamoelectric machine are same
Shaft mechanical is connected；Output shaft and the turntable of decelerator are mechanically coupled；
Hydraulic pressure delivery side of pump divides two-way: the first via connects relief valve；Second tunnel connects the oil-in of check valve；
The outlet of check valve divides five tunnels: the first via connects the oil-in of the first pump/motor, and the first variable pump/
The oil-out of motor is connected with the P mouth of reversal valve；Second tunnel connects the oil-in of the second pump/motor, the
The oil-out connected tank of two pump/motors；3rd tunnel connects hydraulic accumulator；4th tunnel connects the second pressure
Sensor；5th tunnel connects other executor's fluid power system；, the T mouth connected tank of reversal valve, commutation
The A mouth of valve is connected with the rodless cavity of the hydraulic fluid port A1 of shuttle valve and oil cylinder, the B mouth of reversal valve and the oil of shuttle valve
The rod chamber of mouth A2 and oil cylinder is connected；
The power supply of inverter, the power input of the first electric machine controller and the second electric machine controller is defeated
Enter end to be connected with electricity storage element, the clutch end of the first electric machine controller and first electronic/generating
Machine is electrical connected, and clutch end and second dynamoelectric machine of the second electric machine controller are electrical connected；
The input signal of controller includes output signal and second pressure sensing of the first pressure transducer
The output signal of device；The output signal of controller include the input signal of the first electric machine controller, second
The input signal of electric machine controller and the input signal of inverter.
Turn it is preferred that described first dynamoelectric machine and described second dynamoelectric machine are mounted on measuring
The sensor of speed, described sensor is rotary transformer or photoelectric encoder.
In such scheme, described reversal valve is Non-follow control reversal valve, solenoid controlled directional control valve, electricity
Hydraulic control reversal valve and the one controlled in reversal valve of surging.
In such scheme, other executor's fluid power system described includes driving other oil cylinder
Linear motion hydraulic oil cylinder driving system and in order to the turntable drivetrain driving other turntable to rotate
System.
The present invention compared with prior art has clear advantage and beneficial effect, by technique scheme
Understand:
This system is the load-sensitive system of the single pump multi executors controlled based on Hydraulic Motor Generator pressure reduction
System, both can guarantee that executor obtained the flow proportional with pilot operated signal, the most recyclable conventional negative
Carry the sensory system consumption energy at uniform-pressure-drop valve valve port；Specifically:
1) have employed pump/motor and dynamoelectric machine as constant pressure source pressure in secondary regulation system
With the regulation unit of load pressure and flow, due to pump/motor and dynamoelectric machine control for row
Amount or rotating speed control, it is achieved that hydraulic system is without throttling loss；
2) when executor moves along a straight line, matching fluid is carried out by the discharge capacity regulating the first pump/motor
Pressure energy storage pressure and the difference of load pressure, regulate the rotating speed of the first dynamoelectric machine to control oil cylinder
Speed；When load pressure is less than hydraulic accumulator pressure, the first dynamoelectric machine is operated in generating
Pattern, the first pump/motor is operated in motoring mode, now hydraulic accumulator pressure and load pressure
The pressure reduction hydraulic energy of power drives the first dynamoelectric machine to be converted into electric energy by the first pump/motor and stores up
Exist in electricity storage element；In like manner, when load pressure is more than hydraulic accumulator pressure, the first electricity
Dynamic/generator operation is at electric model, and the first pump/motor is operated in pump pattern, and now electricity stores
Unit release electric energy, drives the first pump/motor to be stored up by hydraulic accumulator by the first dynamoelectric machine
The hydraulic oil deposited is delivered to linear drives oil cylinder, it is achieved function of increasing pressure；Solving traditional secondary regulation is
A large amount of pressure reduction throttling loss and can not is there is when being applied to linear drives oil cylinder in system during adoption rate reversal valve
It is applicable to the load pressure occasion higher than hydraulic accumulator pressure；
3) when executor rotates, regulated by the discharge capacity regulating the second pump/motor and turn
The driving torque of platform, regulates the rotating speed of the second dynamoelectric machine to control the rotating speed of turntable；Solve biography
System secondary regulation system uses pump/motor when driving turntable, have startup and braking impact is relatively big and
The unmanageable deficiency of rotating speed；
4) dynamical system have employed hydraulic accumulator as source of stable pressure, driving motor and carrying inorganic tool even
Connecing, the fluctuation of load does not interferes with the duty driving motor, drives motor can store according to hydraulic pressure
The pressure duty of energy device, at efficient region, simultaneously drives motor and has only to the mean power of output loading,
Reduce the power grade driving motor.
For more clearly illustrating architectural feature and effect of the present invention, below in conjunction with the accompanying drawings be embodied as
Example is next, and the present invention is described in detail.
Accompanying drawing explanation
Accompanying drawing is the overall structure block diagram of the preferred embodiments of the invention.
Accompanying drawing identifier declaration:
1, motor 2, hydraulic pump are driven
3, relief valve 4, inverter
5, check valve 6, electricity storage element
7, first electric machine controller the 8, first dynamoelectric machine
9, the first pump/motor 10, reversal valve
11, the first pressure transducer 12, shuttle valve
13, oil cylinder the 14, second electric machine controller
15, second dynamoelectric machine the 16, second pump/motor
17, decelerator 18, turntable
19, hydraulic accumulator the 20, second pressure transducer
21, other executor's hydraulic system 22, controller
Detailed description of the invention
Refer to, shown in accompanying drawing 1, that show the concrete structure of the preferred embodiments of the invention,
A kind of secondary regulation system based on electrical control, it include drive motor (1), hydraulic pump (2),
Relief valve (3), inverter (4), check valve (5), electricity storage element (6), the first electricity
Machine controller (7), the first dynamoelectric machine (8), the first pump/motor (9), reversal valve
(10), the first pressure transducer (11), shuttle valve (12), oil cylinder (13), the second motor control
Device processed (14), the second dynamoelectric machine (15), the second pump/motor (16), decelerator (17),
Turntable (18), hydraulic accumulator (19), the second pressure transducer (20), other executor's liquid
Pressure drive system (21) and controller (22)；
Motor (1) and hydraulic pump (2) is driven coaxially to be mechanically coupled；First pump/motor (9)
Coaxially it is mechanically coupled with the first dynamoelectric machine (8)；Second pump/motor (16), decelerator
(17) power shaft and the second dynamoelectric machine (15) are coaxially mechanically coupled；Decelerator (17)
Output shaft and turntable (18) are mechanically coupled；
The outlet of hydraulic pump (2) divides two-way: the first via connects relief valve (3)；Second tunnel connects check valve
(5) oil-in；The outlet of check valve (5) divides five tunnels: the first via connects the first pump/motor (9)
Oil-in, the oil-out of the first pump/motor (9) is connected with the P mouth of reversal valve (10)；The
Two tunnels connect the oil-in of the second pump/motor (16), the oil-out of the second pump/motor (16)
Connected tank；3rd tunnel connects hydraulic accumulator (19)；4th tunnel connects the second pressure transducer (20)；
5th tunnel connects other executor's fluid power system (21)；The T mouth connected tank of reversal valve (10), changes
It is connected with the hydraulic fluid port A1 of shuttle valve (12) and the rodless cavity of oil cylinder (13) to the A mouth of valve (10),
The B mouth of reversal valve (10) is connected with the hydraulic fluid port A2 of shuttle valve (12) and the rod chamber of oil cylinder (13)；
Inverter (4), the first electric machine controller (7), the power supply of the second electric machine controller (14)
Input is connected with electricity storage element (6), the clutch end of the first electric machine controller (7) and
First dynamoelectric machine (8) is electrical connected, the clutch end of the second electric machine controller (14) and
Two dynamoelectric machines (15) are electrical connected；
The input signal of controller (22) include the first pressure transducer (11) output signal and
The output signal of the second pressure transducer (20)；The output signal of controller (22) includes the first electricity
The input signal of machine controller (7), the input signal of the second electric machine controller (14) and inverter
(4) input signal.
As a kind of optimal way, described first dynamoelectric machine (8) and described second electronic/generating
Machine (15) is mounted on measuring the sensor of rotating speed, and described sensor is rotary transformer or photoelectricity volume
Code device.
In such scheme, described reversal valve (10) is Non-follow control reversal valve, Electromagnetic Control commutation
Valve, electrichydraulic control reversal valve and the one controlled in reversal valve of surging.
In such scheme, other executor's fluid power system described includes driving other oil cylinder
Linear motion hydraulic oil cylinder driving system and in order to the turntable drivetrain driving other turntable to rotate
System.The present invention is to be described in detail as a example by turntable and oil cylinder, and actually one machine may be by many
Individual oil cylinder or multiple turntable composition, but principle is the same with the present invention.
The specific works principle of the present invention is as follows:
(1) power source working rules
The pressure p of hydraulic accumulator 19 is obtained by the second pressure transducer 20a, set Secondary Control
The working pressure range p of system constant pressure source (i.e. hydraulic accumulator 19)amaxAnd pamin, and pamaxIt is more than
pamin.Work as pa＜ paminTime, controller 22 output enables signal and inverter 4 is exported, starts and drive
Motor 1 works, and hydraulic pump 2 output hydraulic pressure oil is oil-filled to hydraulic accumulator 19, hydraulic accumulator 19
Pressure raise；Work as pa>pamaxTime, controller 22 exports non-enable signal and makes inverter 4 the most defeated
Go out, drive motor 1 to quit work, hydraulic pump 2 not output hydraulic pressure oil, due to the effect of check valve 5,
The high pressure liquid force feed of hydraulic accumulator 19 will not flow back to hydraulic pump 2.
(2) linear drives operation principle
The oil cylinder moved along a straight line is made when the constant pressure source (hydraulic accumulator 19) of secondary regulation system drives
When 13, reversal valve 10 can be operated in not by various control modes (electromagnetism, electro-hydraulic or manually etc.)
With station, it is achieved the piston rod of oil cylinder 13 stretches out, stop and the different mode such as retraction.When oil cylinder 13
When being operated in stop mode, the first dynamoelectric machine 8 does not works.Stretch out when oil cylinder 13 is operated in or contracts
During the pattern of returning, load maximum pressure now is passed to the first pressure transducer 11, thus is controlled by shuttle valve 12
Device 22 processed obtains the oil cylinder 13 maximum pressure p when stretching out or retractlmax, by the second pressure sensing
Device 20 obtains the pressure p of hydraulic accumulator 19a；Pressure reduction △ p before and after first pump/motor 9m1=
pa-plmax, can calculate according to the target velocity (by being manually set) of oil cylinder 13 and the parameter of oil cylinder 13
The target flow Q of the first pump/motor 9m1, ignore the first dynamoelectric machine 8 and the first variable pump/
Energy loss between motor 9, the operating power p of the first dynamoelectric machine 8e1=△ pm1*Qm1；Root
The first dynamoelectric machine 8 can be obtained in work merit according to the universal characteristic curve of the first dynamoelectric machine 8
Rate is pe1Corresponding efficiency peak (Tet,net), therefore, the target of the first dynamoelectric machine 8 turns
Speed can be exported by controller 22 and be set as n to the first motor control 7et, and the first pump/motor
Discharge capacity q of 9m1For: qm1=Tet/△pm1, wherein TetAnd netRepresent peak efficiency operating point institute respectively
Corresponding moment of torsion and rotating speed.
(3) driving operation principle is rotated
1) as a example by driving turntable 18, the rotating speed of target signal n of turntable 18 is setet, this signal is multiplied by deceleration
Speed reducing ratio i of device 17 obtains the rotating speed of target n of the second dynamoelectric machine 15et2, second electronic/to send out
The rotating speed of target of motor 15 can be exported by controller 22 and be set as to the second electric machine controller 14
net2,
2) Main Function of the second pump/motor 16 is the speed discrepancy △ according to the second dynamoelectric machine 15
ne2Adjust discharge capacity with the Pressure behaviour of hydraulic accumulator 19, and then the acceleration and deceleration controlling turntable 18 are turned round
Square.
△ne2=net2-net, as △ ne2Time bigger, i.e. more than △ ne2c1, the second dynamoelectric machine 15 is described
The speed discrepancy of actual speed and rotating speed of target is relatively big, regulates the second variable pump now by controller 22
The variable device of/motor 16, is set to maximum q the discharge capacity of the second pump/motor 16m2max,
Ensure the quick response of the second dynamoelectric machine 15；In like manner, as △ ne2Time less, i.e. less than △
ne2c2Time, illustrate the actual speed of the second dynamoelectric machine 15 close to rotating speed of target, now by
Controller 22 regulates the variable device of the second pump/motor 16, the second pump/motor 16
Discharge capacity can be arranged to a smaller value qm2min, and as rotating speed difference △ ne2Between △ ne2c1With
△ne2c1Between time, use △ ne2Dynamically revise the discharge capacity of the second pump/motor 16, i.e. △ ne2Difference
Being worth the biggest, the discharge capacity of the second pump/motor 16 is the biggest, therefore, and the second pump/motor 16
Displacement control rule as follows:
Wherein, △ ne2c1With △ ne2c2It is the judgment threshold of the speed discrepancy of the second dynamoelectric machine 15, its
Middle △ ne2c1More than △ ne2c2。
The braking operation principle referenced drive operation principle of turntable 18, now the second dynamoelectric machine 15
Being operated in power generation mode, the second pump/motor 16 is operated in pump pattern, and the braking of turntable 18 is moved
Can be converted into hydraulic energy to be stored in hydraulic accumulator 18, fractional conversion electric energy is stored in electricity and stores
In unit 6.
The above, be only presently preferred embodiments of the present invention, the not technical scope to the present invention
Impose any restrictions, thus every technical spirit according to the present invention above example is made any trickle
Amendment, equivalent variations and modification, all still fall within the range of technical solution of the present invention.
Claims (4)
1. a secondary regulation system based on electrical control, it includes driving motor (1), hydraulic pressure
Pump (2), relief valve (3), inverter (4), check valve (5), electricity storage element (6),
First electric machine controller (7), the first dynamoelectric machine (8), the first pump/motor (9),
Reversal valve (10), the first pressure transducer (11), shuttle valve (12), oil cylinder (13), second
Electric machine controller (14), the second dynamoelectric machine (15), the second pump/motor (16), subtract
Speed device (17), turntable (18), hydraulic accumulator (19), the second pressure transducer (20),
Other executor's fluid power system (21) and controller (22)；
Motor (1) and hydraulic pump (2) is driven coaxially to be mechanically coupled；First pump/motor (9)
Coaxially it is mechanically coupled with the first dynamoelectric machine (8)；Second pump/motor (16), decelerator
(17) power shaft and the second dynamoelectric machine (15) are coaxially mechanically coupled；Decelerator (17)
Output shaft and turntable (18) be mechanically coupled；
The outlet of hydraulic pump (2) divides two-way: the first via connects relief valve (3)；Second tunnel connects check valve
(5) oil-in；The outlet of check valve (5) divides five tunnels: the first via connects the first pump/motor (9)
Oil-in, the oil-out of the first pump/motor (9) is connected with the P mouth of reversal valve (10)；The
Two tunnels connect the oil-in of the second pump/motor (16), the oil-out of the second pump/motor (16)
Connected tank；3rd tunnel connects hydraulic accumulator (19)；4th tunnel connects the second pressure transducer (20)；
5th tunnel connects other executor's fluid power system (21)；The T mouth connected tank of reversal valve (10), changes
It is connected with the hydraulic fluid port A1 of shuttle valve (12) and the rodless cavity of oil cylinder (13) to the A mouth of valve (10),
The B mouth of reversal valve (10) is connected with the hydraulic fluid port A2 of shuttle valve (12) and the rod chamber of oil cylinder (13)；
Inverter (4), the power input of the first electric machine controller (7) and the second motor control
The power input of device (14) is connected with electricity storage element (6), the first electric machine controller (7)
Clutch end and the first dynamoelectric machine (8) be electrical connected, the second electric machine controller (14)
Clutch end and the second dynamoelectric machine (15) are electrical connected；
The input signal of controller (22) include the first pressure transducer (11) output signal and
The output signal of the second pressure transducer (20)；The output signal of controller (22) includes the first electricity
The input signal of machine controller (7), the input signal of the second electric machine controller (14) and inverter
(4) input signal.
A kind of secondary regulation system based on electrical control the most according to claim 1, its feature
It is: described first dynamoelectric machine (8) and described second dynamoelectric machine (15) are mounted on
Measuring the sensor of rotating speed, described sensor is rotary transformer or photoelectric encoder.
A kind of secondary regulation system based on electrical control the most according to claim 1, its feature
It is: described reversal valve (10) is Non-follow control reversal valve, solenoid controlled directional control valve, electrichydraulic control
Reversal valve and the one controlled in reversal valve of surging.
A kind of secondary regulation system based on electrical control the most according to claim 1, its feature
It is: other executor's fluid power system (21) described includes driving other oil cylinder straight line to transport
Dynamic hydraulic oil cylinder driving system and in order to the turntable drive system driving other turntable to rotate.
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| CN105064957A (en) * | 2015-08-11 | 2015-11-18 | 吉林大学 | Hydraulic hybrid power driving system of beam-pumping unit and control method of hydraulic hybrid power driving system |
| KR20210151890A (en) * | 2019-04-08 | 2021-12-14 | 볼보 컨스트럭션 이큅먼트 에이비 | Hydraulic system and its control method |
| CN111577682B (en) * | 2020-05-19 | 2022-03-04 | 华侨大学 | Two-way speed regulating valve based on variable pressure difference active control |
| CN111706563B (en) * | 2020-06-03 | 2022-05-03 | 华侨大学 | Three-way speed regulating valve based on hydraulic motor-generator pressure compensator |
| CN111706564A (en) * | 2020-06-03 | 2020-09-25 | 华侨大学 | Two-way speed regulating valve based on volume variable pressure difference active control |
| CN114321041B (en) * | 2021-12-23 | 2023-09-22 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Onboard energy storage hydraulic system and method for electric energy hydraulic bidirectional conversion |
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| CN101082334A (en) * | 2007-06-22 | 2007-12-05 | 哈尔滨工业大学 | General beam type secondary regulation hydraulic energy saving system of secondary regulation |
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