CN112303053A - Control system and control method for electric proportional threaded cartridge valve group - Google Patents
Control system and control method for electric proportional threaded cartridge valve group Download PDFInfo
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- CN112303053A CN112303053A CN202010993660.XA CN202010993660A CN112303053A CN 112303053 A CN112303053 A CN 112303053A CN 202010993660 A CN202010993660 A CN 202010993660A CN 112303053 A CN112303053 A CN 112303053A
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- cartridge valve
- electric proportional
- controller
- threaded
- control system
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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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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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
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/005—Fault detection or monitoring
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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
- F15B21/02—Servomotor systems with programme control derived from a store or timing device; Control devices therefor
-
- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B2013/002—Modular valves, i.e. consisting of an assembly of interchangeable components
- F15B2013/004—Cartridge valves
Abstract
The invention discloses a control system and a control method for an electric proportional threaded cartridge valve group, wherein the control system comprises an information collection unit, an electric proportional threaded cartridge valve, a cartridge valve controller and a motor controller, the information collection unit is arranged on the electric proportional cartridge valve, the cartridge valve controller is arranged in the electric proportional threaded cartridge valve, and the cartridge valve controller and the motor controller transmit signals through a communication protocol; the cartridge valve controller is provided with a storage, the storage carries the adjusting information of the electric proportional thread cartridge valve, and the adjusting information comprises the valve core driving current, the corresponding displacement value and the motor driving current matched with the motor model. The area of an oil outlet is adjusted by controlling the movement of the valve core, and meanwhile, the corresponding motor driving current is matched according to the specific motor model so as to accurately control the rotating speed of the motor and realize the adjustment of the oil supply amount; the area of the oil outlet and the oil supply amount are matched together, so that the oil output amount of the electric proportional threaded cartridge valve can be accurately adjusted.
Description
Technical Field
The invention relates to the technical field of electric proportional threaded cartridge valves, in particular to a control system and a control method for an electric proportional threaded cartridge valve group.
Background
Along with the trend of the automatic development of the work of engineering machinery, a core power system, namely a hydraulic system, is upgraded from an original mechanical hydraulic system to an electric control type hydraulic system, a core component of the hydraulic system is upgraded from a mechanical valve to an electromagnetic valve group, and meanwhile, a corresponding valve body controller and an accelerator handle are added in the hydraulic system due to the driving requirement of the electromagnetic valve. Particularly for electrically proportional threaded cartridge valves, as shown in fig. 1, the transmission path of the electrical signal in the system is clearly shown. When the electric proportional valve group controller receives the signal input of an accelerator handle, the electric proportional valve group controller drives the electromagnetic valve according to the current-flow stored in the controller; meanwhile, the controller of the electro-proportional valve group can transmit relevant information to the motor controller so as to realize oil supply in time.
The main defect of the existing electric proportional threaded cartridge valve group is that the oil injection quantity of each electric proportional threaded cartridge valve under the same pressure difference and the same current cannot be guaranteed to be consistent due to the problems of mechanical manufacturing and scattering of electric parts, so that the scattering of the motion amplitude of an oil cylinder is caused, and the requirement of engineering machinery on higher and higher control precision consistency cannot be met. For example, under a certain working condition, the flow rate to be injected by the electric proportional thread cartridge valve is 20L/min, and because the injected oil quantity is related to the rotating speed of the motor, the opening size of the valve sleeve and the movement position of the valve core, the electric proportional thread cartridge valve block controller transmits a rotating speed requirement signal to the motor controller through CAN communication and gives current to the electromagnetic coil, the electromagnetic coil is driven to give electromagnetic force, and the valve core is driven to move in the valve sleeve, so that the opening of the valve sleeve reaches a certain area. The key problem is that because the electric proportional threaded cartridge valves belong to the manufacturing of precision matching parts, the oil injection quantity of different electric proportional threaded cartridge valves under the same pressure difference and the same current is different due to the dispersion difference of the machining of mechanical parts of each factory-delivered electric proportional threaded cartridge valve, the dispersion difference of the machining of mechanical parts of different electric proportional threaded cartridge valves, the manufacturing dispersion difference of electromagnetic coils, the dispersion difference of valve group assembly and the like.
In the existing electro-hydraulic proportional hydraulic system scheme, signals of an accelerator handle are all input into an electric proportional threaded cartridge valve controller; meanwhile, the electric proportional threaded cartridge valve group controller transmits the relevant information of the throttle handle to the motor controller. The specific implementation path is as follows: the cartridge valve controller transmits signals to the motor controller according to received signals input by the accelerator handle, calculates the rotating speed and the driving current of the motor, generates electromagnetic force by giving a certain driving current to an electromagnetic coil on the electric proportional threaded cartridge valve to drive the position of a valve core to move, and then changes the area of an oil outlet on the valve sleeve to realize the flow control of the electric proportional threaded cartridge valve. However, in the practical process, for the convenience of assembly, the cartridge valve controller and the electric proportional threaded cartridge valve group are not matched in a set. The current-flow relationship commonly used in the prior art is an intermediate or average state, and it is only selected from data in the sense of an average value of most electro-proportional valves. Therefore, when different cartridge valve controllers are matched with different electric proportional threaded cartridge valves, the phenomenon that the flow of the electric proportional threaded cartridge valves is inconsistent occurs.
In addition, the stability of the control system of the electrical proportional threaded cartridge valve group also has certain problems. Because the electric proportional threaded cartridge valve group is provided with the load sensitive sensor, signals such as CAN communication and the like between the cartridge valve controller and the motor controller are more, when the cartridge valve controller is far away from the electric proportional threaded cartridge valve group and the number of connectors in the middle is more, the cartridge valve controller and the electric proportional threaded cartridge valve are easily in poor contact under severe working environments, particularly under the conditions of non-road equal temperature and large vibration, and severe consequences such as the stagnation of the action of engineering machinery are caused.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a control system and a control method for an electric proportional threaded cartridge valve group, which solve the problem that the flow of the electric proportional threaded cartridge valve is inconsistent because the current-flow relationship is not in one-to-one correspondence because the existing cartridge valve controller and the electric proportional threaded cartridge valve group are not matched in a set; meanwhile, the problems of cost, system stability and failure rate caused by overlong lines between the electric proportional threaded cartridge valve and the cartridge valve controller are solved; and synchronously realizing the optimization of fault diagnosis conditions.
The specific technical scheme of the invention is as follows:
the utility model provides a control system for electric proportional screw thread cartridge valve group, this control system includes information collection unit, electric proportional screw thread cartridge valve, cartridge valve controller and machine controller, the information collection unit is located on the electric proportional cartridge valve, the cartridge valve controller is located inside the electric proportional screw thread cartridge valve, cartridge valve controller and machine controller pass through communication protocol transmission signal.
Furthermore, the cartridge valve controller is provided with a storage, the storage carries the adjusting information of the electric proportional screw cartridge valve, and the adjusting information comprises the valve core driving current, the corresponding displacement value and the motor driving current matched with the motor model.
Furthermore, a valve core of the electric proportional threaded cartridge valve is controlled in a current closed loop mode.
Furthermore, the control system further comprises a temperature sensor, the temperature sensor is arranged inside the electric proportional threaded cartridge valve, and the information collection unit acquires information transmitted by the temperature sensor.
Further, the cartridge valve controller and the motor controller are communicated by adopting a CANopen protocol.
Furthermore, the surface layer of the cartridge valve controller is provided with a protective coating.
The invention also relates to a control method for the electric proportional threaded cartridge valve group control system, which comprises the following steps:
s1: the cartridge valve controller obtains a control signal;
s2: according to the control signal, the cartridge valve controller obtains a valve core driving current and controls the valve core of the electric proportional threaded cartridge valve to move so as to control the outlet flow of the electric proportional threaded cartridge valve;
s3: according to the control signal, the cartridge valve controller transmits a corresponding motor driving current signal to the motor controller to obtain a motor rotating speed signal value, so that the motor drives the hydraulic pump to provide a sufficient oil source;
s4: according to the combined action of S2 and S3, the oil output of the electric proportional threaded cartridge valve is adjusted and controlled.
Further, in S1, the control signals include a throttle handle input signal, an oil temperature signal, and a vehicle load operation signal.
Further, in S2, the cartridge valve controller needs to load a current-flow curve of the electrical proportional threaded cartridge valve in advance, so that the obtained valve core driving currents respectively correspond to corresponding displacement values of the valve core.
Further, in S3, the cartridge valve controller needs to load a current-flow curve of the electro-proportional threaded cartridge valve in advance, so that the motors of different models are driven by currents corresponding to the motors to match with corresponding motor rotation speed signal values, thereby controlling the output rotation speed of the motors.
Compared with the prior art, the invention has the following beneficial effects:
1. by adopting the control system and the method, the cartridge valve controller can control the action of the valve core, and the motor controller drives and controls the valve core to provide adequate oil source, namely, the action of the electric proportional threaded cartridge valve is controlled synchronously in two directions, so that the flow regulation accuracy of the electric proportional threaded cartridge valve is improved.
2. By adopting the control system, the cartridge valve controller is arranged in the electric proportional threaded cartridge valve and comprises a storage device; before production and delivery, a current-flow characteristic curve in the electric proportional threaded cartridge valve can be written into a storage of a cartridge valve controller; therefore, when the cartridge valve controller receives a control instruction of the accelerator handle, the data driver in the cartridge valve controller can be directly called, and the problem that the current-flow and the pressure difference-flow are not matched is solved.
3. By adopting the control system, the information collection unit is arranged on the electric proportional threaded cartridge valve and can be directly connected with the electric components on the electric proportional threaded cartridge valve, and the route between the information collection unit and the cartridge valve controller only comprises a power supply and a communication line, so that the probability of faults on a wiring harness is greatly reduced, and the reliability of the system is improved.
4. By adopting the control system, the cartridge valve controller is arranged in the electric proportional threaded cartridge valve, namely the two existing independent separation parts are converted into an integrated part system, so that the cost of the system is greatly reduced, and the cost of wire harness connection and the cost of the controller are saved.
5. By adopting the control system, the fault diagnosis is optimized; because the factory data of each electric proportional threaded cartridge valve is stored in the cartridge valve controller inside the electric proportional threaded cartridge valve, the system can be better diagnosed, and the influence factors are small.
According to the control system and the control method for the electric proportional threaded cartridge valve group, the cartridge valve controller and the electric proportional threaded cartridge valve group which are matched in a set are adopted, the structure is compact, the circuit is simple, the current-flow rate of the control system is in one-to-one correspondence, and the phenomenon that the flow rates of the electric proportional threaded cartridge valves are inconsistent is avoided; meanwhile, the system stability is enhanced, the failure rate is reduced, and the popularization and the application are facilitated.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a transmission path of an electrical signal in a prior art electrical proportional cartridge valve control system;
FIG. 2 is a block diagram of the control system for the electrically proportional cartridge valve block of the present invention;
FIG. 3 is a functional block diagram of a control system for an electrically proportional cartridge valve block of the present invention;
FIG. 4 is a block diagram of the steps of a control method for an electrical proportional cartridge valve block of the present invention.
Detailed Description
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the various embodiments of the invention. It should be understood, however, that these physical details should not be construed as limiting the invention. That is, in some embodiments of the invention, such physical details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.
In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
As shown in fig. 2 and 3, the control system for the electric proportional threaded cartridge valve group comprises an information collection unit, an electric proportional threaded cartridge valve, a cartridge valve controller and a motor controller, wherein the information collection unit is arranged on the electric proportional cartridge valve, the cartridge valve controller is arranged inside the electric proportional threaded cartridge valve, and the cartridge valve controller and the motor controller transmit signals through a communication protocol.
The information collection unit collects an accelerator handle input signal, an oil temperature signal and a whole vehicle load action signal; the cartridge valve controller comprises a storage, a communication unit and a driving unit; then the collected signal is transmitted to a cartridge valve controller, the cartridge valve controller transmits a signal to a motor controller through a communication unit, and the motor is controlled to rotate, so that the oil supply amount is controlled; meanwhile, the cartridge valve controller controls the valve core of the electric proportional thread cartridge valve to move through the driving unit, and then the area of the oil outlet is adjusted; the area of the oil outlet and the oil supply quantity are matched together to realize the accurate adjustment of the oil output quantity of the electric proportional threaded cartridge valve.
By adopting the control system for the electric proportional threaded cartridge valve group, a cartridge valve controller is directly embedded into the electric proportional threaded cartridge valve, namely the threaded cartridge valve is connected with a necessary rotating speed signal, an accelerator handle signal and a power supply to work; the matched electric proportional threaded cartridge valve and the cartridge valve controller are ensured to be adopted simultaneously, and the corresponding accuracy of signal transmission execution is ensured; the reliability and the convenience of the system are enhanced, the wiring harnesses are obviously reduced, and the transmission quality is improved.
Specifically, the cartridge valve controller is provided with a storage, the storage carries the adjusting information of the electric proportional threaded cartridge valve, and the adjusting information comprises the valve core driving current, the corresponding displacement value and the motor driving current matched with the motor model.
When each electric proportional threaded cartridge valve group is assembled and leaves a factory, the characteristic curves of current-flow and differential pressure-flow on the electric proportional threaded cartridge valve are brushed into a storage device of a cartridge valve controller, so that each electric proportional threaded cartridge valve group has a special characteristic curve which can be stored on the cartridge valve controller, and the problem of unmatched current-flow and differential pressure-flow is avoided.
The method comprises the following steps of (1) accurately detecting a hydraulic oil temperature signal value on an electric proportional threaded cartridge valve; the control system further comprises a temperature sensor, the temperature sensor is arranged inside the electric proportional threaded cartridge valve, and the information collection unit acquires information transmitted by the temperature sensor.
The cartridge valve group controller is arranged in the electric proportional threaded cartridge valve block, is integrated with a temperature sensor of hydraulic oil, and is cooled by the hydraulic oil in the electric proportional threaded cartridge valve block.
Specifically, the cartridge valve controller and the motor controller are communicated by a CANopen protocol, namely, the communication unit is communicated by the CANopen protocol.
In order to enable immersion of the cartridge valve controller in oil; the surface layer of the cartridge valve controller is provided with a protective coating; and need use three proofings to glue and cover the valve controller chip surface of inserting, prevent that electronic components from receiving the erosion of hydraulic oil, water mixture.
By using the control system for the electric proportional threaded cartridge valve group, a cartridge valve controller receives information provided by an information collection unit (an accelerator handle signal, an oil temperature signal and a finished vehicle load action signal), adjusts and collects a current-flow curve of an electric proportional threaded cartridge valve loaded in an internal storage of the cartridge valve controller, matches the opening of the electric proportional threaded cartridge valve, calculates to obtain a proper valve core driving current, enables the valve core to move to a corresponding position, and calculates to obtain a motor driving current with a matched model; the area of an oil outlet of the electric proportional threaded cartridge valve and the oil supply quantity of the motor are adjusted, so that the flow rate difference of the outlet of each group of electric proportional threaded cartridge valves is greatly reduced. The method comprises the following specific steps:
adjusting the motion position of a valve core of the electric proportional threaded cartridge valve: the motion of the valve core in the electric proportional threaded cartridge valve is based on a signal given by an accelerator handle, and the motion position of the valve core in the electric proportional threaded cartridge valve is matched due to a current-flow curve of the electric proportional threaded cartridge valve loaded in a cartridge valve controller; the valve core on the electric proportional threaded cartridge valve is driven to move through current closed-loop control, appropriate valve core driving current is obtained through calculation, the electromagnetic part is driven to generate electromagnetic force through the driving unit, and the valve core is controlled to move, so that the opening area on the electric proportional threaded cartridge valve is changed, the outlet flow of the electric proportional threaded cartridge valve is changed, and the outlet flow dispersion difference of each group of electric proportional threaded cartridge valves is greatly reduced.
Adjusting the rotating speed of the motor: the cartridge valve controller gives signals to the motor controller through the communication unit, namely CANopen protocol communication according to the signals given by the accelerator handle; because the current-flow curve of the electric proportional threaded cartridge valve is loaded in the cartridge valve controller, a power distribution machine of the electric proportional threaded cartridge valve is matched to obtain proper motor driving current, so that the motor driving hydraulic pump provides enough oil source, and the flow rate difference of the outlet of each group of electric proportional threaded cartridge valves is greatly reduced.
As shown in FIG. 4, the invention also relates to a control method for the electric proportional cartridge valve group control system, which comprises the following steps:
s1: the cartridge valve controller obtains a control signal; the control signals comprise an accelerator handle input signal, an oil temperature signal and a finished vehicle load action signal;
s2: according to the control signal, the cartridge valve controller obtains a valve core driving current and controls the valve core of the electric proportional threaded cartridge valve to move so as to control the outlet flow of the electric proportional threaded cartridge valve; the cartridge valve controller needs to load a current-flow curve of the electric proportional threaded cartridge valve in advance, so that the obtained valve core driving current corresponds to corresponding displacement values of the valve core respectively;
s3: according to the control signal, the cartridge valve controller transmits a corresponding motor driving current signal to the motor controller to obtain a motor rotating speed signal value, so that the motor drives the hydraulic pump to provide a sufficient oil source; the cartridge valve controller needs to load a current-flow curve of the electric proportional threaded cartridge valve in advance, so that motors of different models can match corresponding motor rotating speed signal values according to corresponding motor driving currents to control the output rotating speed of the motors;
s4: according to the combined action of S2 and S3, the oil output of the electric proportional threaded cartridge valve is adjusted and controlled.
According to the control system and the control method for the electric proportional threaded cartridge valve group, the cartridge valve controller and the electric proportional threaded cartridge valve group which are matched in a set are adopted, the structure is compact, the circuit is simple, the current-flow rate of the control system is in one-to-one correspondence, and the phenomenon that the flow rates of the electric proportional threaded cartridge valves are inconsistent is avoided; by adopting the control method, on one hand, the area of the oil outlet is adjusted by controlling the movement of the valve core, and on the other hand, the corresponding motor driving current is matched according to the specific motor model so as to accurately control the rotating speed of the motor and realize the adjustment of the oil supply amount; the oil outlet area and the oil supply amount are matched together to realize the accurate adjustment of the oil output of the electric proportional threaded cartridge valve; meanwhile, the system stability is enhanced, the failure rate is reduced, and the popularization and the application are facilitated.
The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a control system that is used for electric proportion screw-in cartridge valves which characterized in that: the control system comprises an information collection unit, an electric proportional threaded cartridge valve, a cartridge valve controller and a motor controller, wherein the information collection unit is arranged on the electric proportional cartridge valve, the cartridge valve controller is arranged inside the electric proportional threaded cartridge valve, and the cartridge valve controller and the motor controller transmit signals through a communication protocol.
2. The control system of claim 1, wherein the control system comprises: the cartridge valve controller is provided with a storage, the storage carries the adjusting information of the electric proportional thread cartridge valve, and the adjusting information comprises the valve core driving current, the corresponding displacement value and the motor driving current matched with the motor model.
3. The control method for the electrically proportional threaded cartridge valve group of claim 1, wherein: and a valve core of the electric proportional threaded cartridge valve is controlled by adopting a current closed loop.
4. The control system of claim 1, wherein the control system comprises: the control system further comprises a temperature sensor, the temperature sensor is arranged inside the electric proportional threaded cartridge valve, and the information collection unit acquires information transmitted by the temperature sensor.
5. The control system of claim 1, wherein the control system comprises: the cartridge valve controller and the motor controller are communicated by adopting a CANopen protocol.
6. The control system of claim 1, wherein the control system comprises: and the surface layer of the cartridge valve controller is provided with a protective coating.
7. A control method for an electrical proportional valve cartridge control system according to claim 1, wherein: the method comprises the following specific steps:
s1: the cartridge valve controller obtains a control signal;
s2: according to the control signal, the cartridge valve controller obtains a valve core driving current and controls the valve core of the electric proportional threaded cartridge valve to move so as to control the outlet flow of the electric proportional threaded cartridge valve;
s3: according to the control signal, the cartridge valve controller transmits a corresponding motor driving current signal to the motor controller to obtain a motor rotating speed signal value, so that the motor drives the hydraulic pump to provide a sufficient oil source;
s4: according to the combined action of S2 and S3, the oil output of the electric proportional threaded cartridge valve is adjusted and controlled.
8. The control method for the electrically proportional threaded cartridge valve set of claim 7, wherein: in S1, the control signals include an accelerator handle input signal, an oil temperature signal, and a vehicle load operation signal.
9. The control method for the electrically proportional threaded cartridge valve set of claim 7, wherein: in S2, the cartridge valve controller needs to pre-load the current-flow curve of the electro-proportional threaded cartridge valve, so that the obtained valve core driving currents respectively correspond to the corresponding displacement values of the valve core.
10. The control method for the electrically proportional threaded cartridge valve set of claim 7, wherein: in S3, the cartridge valve controller needs to pre-load the current-flow curve of the electro-proportional threaded cartridge valve, so that motors of different models can control the output rotation speed of the motor according to the corresponding motor driving current to match the corresponding motor rotation speed signal value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010993660.XA CN112303053B (en) | 2020-09-21 | 2020-09-21 | Control system and control method for electric proportional threaded cartridge valve group |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010993660.XA CN112303053B (en) | 2020-09-21 | 2020-09-21 | Control system and control method for electric proportional threaded cartridge valve group |
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| CN112303053A true CN112303053A (en) | 2021-02-02 |
| CN112303053B CN112303053B (en) | 2022-08-09 |
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| CN106855070A (en) * | 2016-12-19 | 2017-06-16 | 武汉船用机械有限责任公司 | A kind of proportional flow inserted valve and its control method |
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| CN207796172U (en) * | 2017-12-29 | 2018-08-31 | 天津科先液压技术开发有限公司 | A kind of high-precision pneumatic proportional pressure valve |
| CN110529446A (en) * | 2019-09-05 | 2019-12-03 | 燕山大学 | A kind of digital control flow inserted valve and its control method |
| CN110645217A (en) * | 2019-09-30 | 2020-01-03 | 上海海岳液压机电工程有限公司 | Large-flow main valve position double-feedback type high-frequency-response three-way servo pilot cartridge valve |
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2020
- 2020-09-21 CN CN202010993660.XA patent/CN112303053B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060027777A1 (en) * | 2004-08-03 | 2006-02-09 | Harris Corporation | Embedded control valve using homopolar motor |
| WO2014048181A1 (en) * | 2012-09-28 | 2014-04-03 | 上海人豪液压技术有限公司 | Modular combined electrohydraulic multi-way valve system using compact two-way cartridge valve |
| CN106855070A (en) * | 2016-12-19 | 2017-06-16 | 武汉船用机械有限责任公司 | A kind of proportional flow inserted valve and its control method |
| CN206984107U (en) * | 2017-06-06 | 2018-02-09 | 吉林大学 | Multi-mode automobile steer-by-wire system |
| CN207796172U (en) * | 2017-12-29 | 2018-08-31 | 天津科先液压技术开发有限公司 | A kind of high-precision pneumatic proportional pressure valve |
| CN110529446A (en) * | 2019-09-05 | 2019-12-03 | 燕山大学 | A kind of digital control flow inserted valve and its control method |
| CN110645217A (en) * | 2019-09-30 | 2020-01-03 | 上海海岳液压机电工程有限公司 | Large-flow main valve position double-feedback type high-frequency-response three-way servo pilot cartridge valve |
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| CN112303053B (en) | 2022-08-09 |
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