CN105570238A - Valveless hydraulic servo synchronous system - Google Patents
Valveless hydraulic servo synchronous system Download PDFInfo
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- CN105570238A CN105570238A CN201610004486.5A CN201610004486A CN105570238A CN 105570238 A CN105570238 A CN 105570238A CN 201610004486 A CN201610004486 A CN 201610004486A CN 105570238 A CN105570238 A CN 105570238A
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Classifications
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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
- 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
- F15B21/087—Control strategy, e.g. with block diagram
-
- 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
- F15B11/22—Synchronisation of the movement of two or more servomotors
-
- 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
- F15B2211/20507—Type of prime mover
- F15B2211/20515—Electric motor
-
- 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
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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)
- Control Of Fluid Gearings (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a valveless hydraulic servo synchronous system. Multiple oil paths are adopted, sensors are adopted on multiple branches to carry out data collection on the speed, the pressure and the displacement, and auxiliary controllers on the oil paths are used for analyzing the data and transmitting the data to a master controller. The master controller carries out the comparison and then feeds the data back to the auxiliary controllers. The auxiliary controllers act on servo motors and pumps, and generated desynchrony is adjusted. The valveless hydraulic servo synchronous system is high in control precision and efficiency.
Description
Technical field
The present invention relates to a kind of valveless hydraulic servo synchro system.
Background technique
Hydraulic synchronous control system is not a single system, and it comprises the content of many branches of learning comprehensive, is an important research field in machine-electricity-liquid integrated technology, and not only like this in theory, the application in actual industrial production is also more and more extensive.But due to factor restrictions such as conditions of manufacture, the requirement on machining accuracy for the element in hydraulic synchronous control system is difficult to meet stringent condition, and its performance does not reach requirement yet.In order to reach synchronous effect, each cylinder motion should not interfere with each other, and its movement velocity does not change with the change of outer load.Traditional series connection synchronization hydraulic system: the working pressure of pump, its value equals the induced pressure sum of each series cylinder, so when outer load is larger, is not suitable for adopting, otherwise can causes the synchronous disorder of oil hydraulic cylinder.
Traditional synchronization hydraulic system in parallel: the fluid that oil hydraulic pump is discharged enters simultaneously and performs in original paper, and the oil return of each executive component all enters among fuel tank.But this oil circuit is only applicable to the less situation of outer load variations or the occasion not high to mechanism kinematic rate request.
Summary of the invention
The object of the present invention is to provide the valveless hydraulic servo synchro system that a kind of control accuracy is high, efficiency is high.
Technical solution of the present invention is:
A kind of valveless hydraulic servo synchro system, it is characterized in that: adopt many oil circuits, each bar branch road have employed sensor data capture is carried out to speed, pressure and displacement, by the sub-controller on oil circuit, then master controller is passed to data analysis, after master controller contrasts by data feedback to sub-controller, sub-controller acts on actuating motor and pump, adjusts the asynchronous of generation.
The oil circuit of each branch road is duplicate, on certain branch road:
When actuating motor starts, if the excessive motor that probably causes of now load can not turn, deviate from the normal run curve of motor, more seriously cause burn-down of electric motor, now reduce pump delivery, namely reduce its torque, motor can be made normally to work;
Formed a simple recharging oil device with hydraulic lock and a fuel tank, be used for draining or repairing; When the pressure of system does not reach predetermined value, pump delivery increases, and the rotating speed of motor improves, and makes the force value of system reach predetermined value; When the pressure of system reaches predetermined value, now system is in packing state; When the pressure of system exceeds predetermined value, reduce pump delivery and reduce the rotating speed of motor, working life and the energy efficient of motor can be extended;
When outer load is heavy duty time, motor rotating speed when just starting is unsuitable too high, and pump delivery v is also unsuitable excessive; After motor is normally worked, increase the rotating speed n of motor, make pump delivery be in maximum value, now flow is maximum, thus the pressure p of system is improved, and makes the motor when heavy duty normally work in such a situa-tion, and can protect motor;
When outer load is not very large time, keep the low cruise of actuating motor, regulate pump delivery;
The pressure of pump delivery and system is linear relation, can reduce along with the increase of system pressure; When input end pressure is higher in certain branch road time, the asynchronous of oil circuit can be caused; After pressure exceedes working pressure, due to pressure feedback, discharge capacity can reduce, but is now not suitable for regulating pump, and should be carried out the pressure of regulating system by the rotating speed reducing motor; In like manner, when pressure is lower, being also not suitable for regulating pump delivery v, should realizing synchronously by regulating the rotating speed n of motor;
When sensor shows certain or some oil circuit hydraulic cylinder piston movement velocity is different time, due to the characteristic of variable vane pump, adjustable pump delivery makes speed reach synchronous;
When have in oil circuit certain or some oil circuit in displacement can not synchronous time, carrying out adjustment and make oil circuit synchronous, asynchronous with speed the same, is also the mode taking adjustment pump delivery;
Master controller and each oil circuit controller connect each other; Data are sent to master controller by the controller of each oil circuit, master controller data are analyzed then by data feedback to oil circuit controller; If nonsynchronous phenomenon with other oil circuits has appearred in certain branch road of system, so the controller of this branch road has made this oil circuit reach the speed the same with other oil circuits and displacement by regulating with pump the actuating motor of its place oil circuit, synchronous to realize.
Select actuating motor Direct driver variable displacement pump, the direction of the traffic of controlled variable pump and delivery pressure.
Between described variable displacement pump and oil hydraulic cylinder, the recharging oil device be made up of hydraulic lock and fuel tank is housed.
The invention solves the problem that conventional valve control synchro system control accuracy is not high; Solve the problem that conventional valve control synchro system efficiency is not high; Solve the problem that conventional valve control synchro system energy consumption is high; Solve conventional valve control synchro system difficult in maintenance, the problem that cost is high.
Valveless hydraulic servo synchro system of the present invention, owing to have employed actuating motor and oil circuit respectively separately, is connected each bar oil circuit by sensor and master controller, so they do not exist the defect of series connection oil circuit and oil circuit in parallel.Good breakthrough has been made to the design of the travel speed of oil hydraulic cylinder and the control of pressure.Valveless Hydrauservo System in control accuracy and energy-conservation on all achieve breakthrough progress.Along with the high speed development of global economy, the raising of energy-conserving and environment-protective consciousness, valveless Hydrauservo System will be more widely used in above-mentioned field.Therefore, the deep theory analysis to valveless Hydrauservo System and experimental study are extremely necessary, will bring huge economic and social benefits.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is valveless hydraulic servo synchro system control block diagram of the present invention;
Fig. 2 is valveless hydraulic servo synchro system schematic diagram of the present invention.
Embodiment
Embodiment 1:
A kind of valveless hydraulic servo synchro system, adopt many oil circuits, each bar branch road have employed sensor data capture is carried out to speed, pressure and displacement, by the sub-controller on oil circuit, then master controller is passed to data analysis, after master controller contrasts by data feedback to sub-controller, sub-controller acts on actuating motor and pump, adjusts the asynchronous of generation.
Concrete controlling method:
For certain oil circuit, analyze its movement process, the oil circuit due to whole branch road is duplicate, i.e. the movement process of each oil circuit known.
When actuating motor starts, if the excessive motor that probably causes of now load can not turn, deviate from the normal run curve of motor, more seriously cause burn-down of electric motor, now reduce pump delivery, namely reduce its torque, motor can be made normally to work;
Formed a simple recharging oil device with hydraulic lock and a fuel tank, be used for draining or repairing; When the pressure of system does not reach predetermined value, pump delivery increases, and the rotating speed of motor improves, and makes the force value of system reach predetermined value; When the pressure of system reaches predetermined value, now system is in packing state; When the pressure of system exceeds predetermined value, reduce pump delivery and reduce the rotating speed of motor, working life and the energy efficient of motor can be extended;
When outer load is heavy duty time, motor rotating speed when just starting is unsuitable too high, and pump delivery v is also unsuitable excessive; After motor is normally worked, increase the rotating speed n of motor, make pump delivery be in maximum value, now flow is maximum, thus the pressure p of system is improved, and makes the motor when heavy duty normally work in such a situa-tion, and can protect motor;
When outer load is not very large time, keep the low cruise of actuating motor, regulate pump delivery;
The pressure of pump delivery and system is linear relation, can reduce along with the increase of system pressure; When input end pressure is higher in certain branch road time, the asynchronous of oil circuit can be caused; After pressure exceedes working pressure, due to pressure feedback, discharge capacity can reduce, but is now not suitable for regulating pump, and should be carried out the pressure of regulating system by the rotating speed reducing motor; In like manner, when pressure is lower, being also not suitable for regulating pump delivery v, should realizing synchronously by regulating the rotating speed n of motor;
When sensor shows certain or some oil circuit hydraulic cylinder piston movement velocity is different time, due to the characteristic of variable vane pump, adjustable pump delivery makes speed reach synchronous;
When have in oil circuit certain or some oil circuit in displacement can not synchronous time, carrying out adjustment and make oil circuit synchronous, asynchronous with speed the same, is also the mode taking adjustment pump delivery;
Master controller and each oil circuit controller connect each other; Data are sent to master controller by the controller of each oil circuit, master controller data are analyzed then by data feedback to oil circuit controller; If nonsynchronous phenomenon with other oil circuits has appearred in certain branch road of system, so the controller of this branch road has made this oil circuit reach the speed the same with other oil circuits and displacement by regulating with pump the actuating motor of its place oil circuit, synchronous to realize.
Embodiment 2:
A kind of valveless hydraulic servo synchro system, adopt four oil circuits, each bar branch road have employed sensor data capture is carried out to speed, pressure and displacement, by the sub-controller on oil circuit, then master controller is passed to data analysis, after master controller contrasts by data feedback to sub-controller, sub-controller acts on actuating motor and pump asynchronously adjusting of producing.
Concrete controlling method:
For certain oil circuit, analyze its movement process, the oil circuit due to whole branch road is duplicate, i.e. the movement process of each oil circuit known.
When actuating motor starts, if the excessive motor that probably causes of now load can not turn, deviate from the normal run curve of motor, more seriously cause burn-down of electric motor, now reduce pump delivery, namely reduce its torque, motor can be made normally to work;
Formed a simple recharging oil device with hydraulic lock and a fuel tank, be used for draining or repairing; When the pressure of system does not reach predetermined value, pump delivery increases, and the rotating speed of motor improves, and makes the force value of system reach predetermined value; When the pressure of system reaches predetermined value, now system is in packing state; When the pressure of system exceeds predetermined value, reduce pump delivery and reduce the rotating speed of motor, working life and the energy efficient of motor can be extended;
When outer load is heavy duty time, motor rotating speed when just starting is unsuitable too high, and pump delivery v is also unsuitable excessive; After motor is normally worked, increase the rotating speed n of motor, make pump delivery be in maximum value, now flow is maximum, thus the pressure p of system is improved, and makes the motor when heavy duty normally work in such a situa-tion, and can protect motor;
When outer load is not very large time, keep the low cruise of actuating motor, regulate pump delivery;
The pressure of pump delivery and system is linear relation, can reduce along with the increase of system pressure; When input end pressure is higher in certain branch road time, the asynchronous of oil circuit can be caused; After pressure exceedes working pressure, due to pressure feedback, discharge capacity can reduce, but is now not suitable for regulating pump, and should be carried out the pressure of regulating system by the rotating speed reducing motor; In like manner, when pressure is lower, being also not suitable for regulating pump delivery v, should realizing synchronously by regulating the rotating speed n of motor;
When sensor shows certain or some oil circuit hydraulic cylinder piston movement velocity is different time, due to the characteristic of variable vane pump, adjustable pump delivery makes speed reach synchronous;
When have in oil circuit certain or some oil circuit in displacement can not synchronous time, carrying out adjustment and make oil circuit synchronous, asynchronous with speed the same, is also the mode taking adjustment pump delivery;
Master controller and each oil circuit controller connect each other; Data are sent to master controller by the controller of each oil circuit, master controller data are analyzed then by data feedback to oil circuit controller; If nonsynchronous phenomenon with other oil circuits has appearred in certain branch road of system, so the controller of this branch road has made this oil circuit reach the speed the same with other oil circuits and displacement by regulating with pump the actuating motor of its place oil circuit, synchronous to realize.
Embodiment 3:
A kind of valveless hydraulic servo synchro system, adopt 6 oil circuits, each bar branch road have employed sensor data capture is carried out to speed, pressure and displacement, by the sub-controller on oil circuit, then master controller is passed to data analysis, after master controller contrasts by data feedback to sub-controller, sub-controller acts on actuating motor and pump asynchronously adjusting of producing.
Concrete controlling method:
For certain oil circuit, analyze its movement process, the oil circuit due to whole branch road is duplicate, i.e. the movement process of each oil circuit known.
When actuating motor starts, if the excessive motor that probably causes of now load can not turn, deviate from the normal run curve of motor, more seriously cause burn-down of electric motor, now reduce pump delivery, namely reduce its torque, motor can be made normally to work;
Formed a simple recharging oil device with hydraulic lock and a fuel tank, be used for draining or repairing; When the pressure of system does not reach predetermined value, pump delivery increases, and the rotating speed of motor improves, and makes the force value of system reach predetermined value; When the pressure of system reaches predetermined value, now system is in packing state; When the pressure of system exceeds predetermined value, reduce pump delivery and reduce the rotating speed of motor, working life and the energy efficient of motor can be extended;
When outer load is heavy duty time, motor rotating speed when just starting is unsuitable too high, and pump delivery v is also unsuitable excessive; After motor is normally worked, increase the rotating speed n of motor, make pump delivery be in maximum value, now flow is maximum, thus the pressure p of system is improved, and makes the motor when heavy duty normally work in such a situa-tion, and can protect motor;
When outer load is not very large time, keep the low cruise of actuating motor, regulate pump delivery;
The pressure of pump delivery and system is linear relation, can reduce along with the increase of system pressure; When input end pressure is higher in certain branch road time, the asynchronous of oil circuit can be caused; After pressure exceedes working pressure, due to pressure feedback, discharge capacity can reduce, but is now not suitable for regulating pump, and should be carried out the pressure of regulating system by the rotating speed reducing motor; In like manner, when pressure is lower, being also not suitable for regulating pump delivery v, should realizing synchronously by regulating the rotating speed n of motor;
When sensor shows certain or some oil circuit hydraulic cylinder piston movement velocity is different time, due to the characteristic of variable vane pump, adjustable pump delivery makes speed reach synchronous;
When have in oil circuit certain or some oil circuit in displacement can not synchronous time, carrying out adjustment and make oil circuit synchronous, asynchronous with speed the same, is also the mode taking adjustment pump delivery;
Master controller and each oil circuit controller connect each other; Data are sent to master controller by the controller of each oil circuit, master controller data are analyzed then by data feedback to oil circuit controller; If nonsynchronous phenomenon with other oil circuits has appearred in certain branch road of system, so the controller of this branch road has made this oil circuit reach the speed the same with other oil circuits and displacement by regulating with pump the actuating motor of its place oil circuit, synchronous to realize.
Claims (4)
1. a valveless hydraulic servo synchro system, it is characterized in that: adopt many oil circuits, each bar branch road have employed sensor data capture is carried out to speed, pressure and displacement, by the sub-controller on oil circuit, then master controller is passed to data analysis, after master controller contrasts by data feedback to sub-controller, sub-controller acts on actuating motor and pump, adjusts the asynchronous of generation.
2. valveless hydraulic servo synchro system according to claim 1, is characterized in that: the oil circuit of each branch road is duplicate, on certain branch road:
When actuating motor starts, if the excessive motor that probably causes of now load can not turn, deviate from the normal run curve of motor, more seriously cause burn-down of electric motor, now reduce pump delivery, namely reduce its torque, motor can be made normally to work;
Formed a simple recharging oil device with hydraulic lock and a fuel tank, be used for draining or repairing; When the pressure of system does not reach predetermined value, pump delivery increases, and the rotating speed of motor improves, and makes the force value of system reach predetermined value; When the pressure of system reaches predetermined value, now system is in packing state; When the pressure of system exceeds predetermined value, reduce pump delivery and reduce the rotating speed of motor, working life and the energy efficient of motor can be extended;
When outer load is heavy duty time, motor rotating speed when just starting is unsuitable too high, and pump delivery v is also unsuitable excessive; After motor is normally worked, increase the rotating speed n of motor, make pump delivery be in maximum value, now flow is maximum, thus the pressure p of system is improved, and makes the motor when heavy duty normally work in such a situa-tion, and can protect motor;
When outer load is not very large time, keep the low cruise of actuating motor, regulate pump delivery;
The pressure of pump delivery and system is linear relation, can reduce along with the increase of system pressure; When input end pressure is higher in certain branch road time, the asynchronous of oil circuit can be caused; After pressure exceedes working pressure, due to pressure feedback, discharge capacity can reduce, but is now not suitable for regulating pump, and should be carried out the pressure of regulating system by the rotating speed reducing motor; In like manner, when pressure is lower, being also not suitable for regulating pump delivery v, should realizing synchronously by regulating the rotating speed n of motor;
When sensor shows certain or some oil circuit hydraulic cylinder piston movement velocity is different time, due to the characteristic of variable vane pump, adjustable pump delivery makes speed reach synchronous;
When have in oil circuit certain or some oil circuit in displacement can not synchronous time, carrying out adjustment and make oil circuit synchronous, asynchronous with speed the same, is also the mode taking adjustment pump delivery;
Master controller and each oil circuit controller connect each other; Data are sent to master controller by the controller of each oil circuit, master controller data are analyzed then by data feedback to oil circuit controller; If nonsynchronous phenomenon with other oil circuits has appearred in certain branch road of system, so the controller of this branch road has made this oil circuit reach the speed the same with other oil circuits and displacement by regulating with pump the actuating motor of its place oil circuit, synchronous to realize.
3. valveless hydraulic servo synchro system according to claim 2, is characterized in that: select actuating motor Direct driver variable displacement pump, the direction of the traffic of controlled variable pump and delivery pressure.
4. valveless hydraulic servo synchro system according to claim 3, is characterized in that: between described variable displacement pump and oil hydraulic cylinder, the recharging oil device be made up of hydraulic lock and fuel tank is housed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610004486.5A CN105570238A (en) | 2016-01-07 | 2016-01-07 | Valveless hydraulic servo synchronous system |
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| CN201610004486.5A CN105570238A (en) | 2016-01-07 | 2016-01-07 | Valveless hydraulic servo synchronous system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106884833A (en) * | 2017-04-17 | 2017-06-23 | 泸州市长江液压件装备有限公司 | A kind of hydraulic servo synchronization system |
| CN106895034A (en) * | 2017-04-19 | 2017-06-27 | 沈阳建筑大学 | A kind of asynchronous circulation jack-up system of Large Construction platform multi-hydraulic-cylinder elementary errors |
| CN108127560A (en) * | 2017-12-08 | 2018-06-08 | 中国兵器科学研究院宁波分院 | For the control system of the two-sided fast polishing of square optical element |
| WO2023029292A1 (en) * | 2021-08-31 | 2023-03-09 | 上海衡拓液压控制技术有限公司 | Eha hydraulic synchronization system |
| CN117032088A (en) * | 2023-09-01 | 2023-11-10 | 广东思豪内高压科技有限公司 | Intelligent servo control method based on high-precision internal high-pressure forming system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106884833A (en) * | 2017-04-17 | 2017-06-23 | 泸州市长江液压件装备有限公司 | A kind of hydraulic servo synchronization system |
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| WO2023029292A1 (en) * | 2021-08-31 | 2023-03-09 | 上海衡拓液压控制技术有限公司 | Eha hydraulic synchronization system |
| CN117032088A (en) * | 2023-09-01 | 2023-11-10 | 广东思豪内高压科技有限公司 | Intelligent servo control method based on high-precision internal high-pressure forming system |
| CN117032088B (en) * | 2023-09-01 | 2024-04-09 | 广东思豪内高压科技有限公司 | Intelligent servo control method based on high-precision internal high-pressure forming system |
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Application publication date: 20160511 |
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| RJ01 | Rejection of invention patent application after publication |