CN206368871U - A kind of high precision displacement controls cylinder device - Google Patents
A kind of high precision displacement controls cylinder device Download PDFInfo
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- CN206368871U CN206368871U CN201621492382.5U CN201621492382U CN206368871U CN 206368871 U CN206368871 U CN 206368871U CN 201621492382 U CN201621492382 U CN 201621492382U CN 206368871 U CN206368871 U CN 206368871U
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Abstract
The utility model is related to hydraulic cylinder control technology field, disclose a kind of high precision displacement control cylinder device, including controller, hydraulic cylinder, the first displacement transducer and second displacement sensor, wherein, first displacement transducer and second displacement sensor are used to detect the displacement of the take-off lever of hydraulic cylinder, and range of the range more than second displacement sensor of the first displacement transducer；The controller can receive first displacement transducer, the Displacement Feedback signal of second displacement sensor and select primary feedback signal, and the controller can control hydraulic cylinder to act.While the utility model makes hydraulic cylinder have big stroke, Bit andits control precision can be also increased substantially in small stroke range；This cylinder device processing is simple easily to be realized, has been widened in the application field of hydraulic cylinder, highly versatile, the hydraulic system that can be widely applied to the displacement controllables such as hydraulic vibration generator.
Description
Technical field
The utility model is related to hydraulic cylinder control technology field, more particularly to a kind of high precision displacement control hydraulic cylinder system
System.
Background technology
Hydraulic cylinder is the executing agency of hydraulic system, is widely used in a variety of hydraulic control systems, is broadly divided into power
Control and Bit andits control two types.Wherein, in displacement control system, system sends displacement commands to hydraulic cylinder, and by hydraulic cylinder
Displacement signal acquisition contrasted to control system with displacement commands, by controlling the aperture of servo valve or proportioning valve to control
The motion of hydraulic cylinder, so as to reach the purpose of precise movement, the displacement acquisition of hydraulic cylinder is passed by displacement integrated on hydraulic cylinder
Sensor is realized.
In the market has under a variety of application operating modes, some special operation conditions, it is desirable to hydraulic cylinder while possessing big stroke capability,
There is higher Bit andits control precision also in small stroke range, typical case's application is such as dynamically tested in hydraulic vibration generator system
Field：During low-frequency vibration, it is desirable to have the ability of big stroke；During dither, displacement is smaller, it is desirable to have higher control accuracy.
At present, single displacement transducer is integrated in cylinder interior by the hydraulic cylinder of most of displacement controllable, or only will be single
Between one displacement transducer is integrated on the outside of cylinder output rod end and cylinder barrel.But it is due to that can not improve collector measurement range
Under the conditions of, for the collector of identical range, the displacement stroke of displacement transducer is bigger, and the resolution ratio of displacement transducer is got over
It is low, so that the control accuracy to hydraulic cylinder is poorer；In order to meet the high request of control accuracy, it is necessary to improve displacement transducer
Resolution ratio, namely reduction displacement transducer range, be thus restricted the stroke of hydraulic cylinder；It can be seen that, it can not carry
Under conditions of high collector measurement range, the displacement transducer of existing mode can not meet hydraulic cylinder to high control precision and big row
Required of both journey.
Utility model content
(1) technical problem to be solved
The utility model provides a kind of high precision displacement control cylinder device, to solve the displacement transducer of existing mode
The problem of hydraulic cylinder of both high control precision and big stroke to requiring can not be met.
(2) technical scheme
In order to solve the above-mentioned technical problem, the utility model provides a kind of high precision displacement and controls cylinder device, bag
Controller is included, hydraulic cylinder, the first displacement transducer and the second displacement sensor being connected respectively with the controller, wherein,
First displacement transducer and second displacement sensor are separately positioned on the hydraulic cylinder, the output for detecting hydraulic cylinder
The travel displacement of bar, and range of the range more than second displacement sensor of the first displacement transducer；
The controller can receive the Displacement Feedback signal of first displacement transducer and second displacement sensor simultaneously
According to Displacement Feedback signal behavior primary feedback signal, the controller controls hydraulic cylinder to act according to primary feedback signal, so that shape
The closed-loop control acted into hydraulic cylinder.
Further, first displacement transducer is arranged on the inside of the cylinder body of the hydraulic cylinder, first displacement
The fixing end of sensor and the rear sleeve of hydraulic cylinder are connected, the mobile terminal of first displacement transducer and the output of hydraulic cylinder
Bar is connected.
Further, the second displacement sensor is arranged on outside the cylinder body of hydraulic cylinder, the second displacement sensor
Fixing end be fixedly connected with the cylinder body lateral wall of hydraulic cylinder, the mobile terminal of the second displacement sensor and the output of hydraulic cylinder
Bar is exposed at the end connection on the outside of the cylinder body.
Further, it is provided with the rear sleeve of the hydraulic cylinder on the first fixed seat, the take-off lever of the hydraulic cylinder
The second fixed seat is provided with, first displacement transducer passes through the tail of the first fixed seat, the second fixed seat and hydraulic cylinder respectively
Portion's sleeve, the take-off lever of hydraulic cylinder are fixedly connected.
Further, the 3rd fixed seat is provided with outside the cylinder body of the hydraulic cylinder, the take-off lever of the hydraulic cylinder is exposed at
The 4th fixed seat is provided with end on the outside of the cylinder body, the second displacement sensor passes through the 3rd fixed seat, respectively
Outside the cylinder body of four fixed seats and hydraulic cylinder, the take-off lever of hydraulic cylinder be exposed on the outside of the cylinder body end connection.
Further, the stroke and range of first displacement transducer are not less than the defeated of the take-off lever of the hydraulic cylinder
Go out stroke；
The stroke of the second displacement sensor is not less than the delivery stroke of the take-off lever of the hydraulic cylinder, the second
The range of displacement sensor is the 1/10~1/100 of the delivery stroke of the take-off lever of the hydraulic cylinder.
Further, the hydraulic cylinder is single take-off lever hydraulic cylinder or lose-lose outlet-rod hydraulic cylinder.
Further, the controller is by controlling hydraulic cylinder described in servo valve control to act, and the controller is by adopting
Storage is connected with first displacement transducer and second displacement sensor respectively.
(3) beneficial effect
Above-mentioned technical proposal of the present utility model has the following advantages that：
The high precision displacement control cylinder device that the utility model is provided, in the case of increase production cost on a small quantity,
While making hydraulic cylinder that there is big stroke, Bit andits control precision can be also increased substantially in small stroke range；This hydraulic cylinder
System processing is simple easily to be realized, has widened the application field of hydraulic cylinder, highly versatile can be widely applied to hydraulic vibration generator etc.
In the hydraulic system of displacement controllable.
Except the utility model described above solve technical problem, constitute technical scheme technical characteristic and
Outside the technical characteristic for having the advantages that these technical schemes is brought, other technical characteristics of the present utility model and these technologies are special
The advantage brought is levied, will be further illustrated with reference to accompanying drawing.
Brief description of the drawings
Fig. 1 is the schematic diagram that the high precision displacement of the utility model embodiment 1 controls cylinder device；
Fig. 2 is the defeated of the hydraulic cylinder of the control method of the high precision displacement of the utility model embodiment 1 control cylinder device
Rod is moved to the primary feedback collection circulation workflow diagram in thin tail sheep region by big displacement region；
Fig. 3 is the system workflow of the control method of the high precision displacement of the utility model embodiment 1 control cylinder device
Cheng Tu；
Fig. 4 is the control circulation industrial of the control method of the high precision displacement of the utility model embodiment 1 control cylinder device
Make flow chart.
In figure：1：Hydraulic cylinder；2：First displacement transducer；3：Second displacement sensor；4：Controller.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that retouched
The embodiment stated is a part of embodiment of the present utility model, rather than whole embodiments.Based on the reality in the utility model
Apply example, the every other embodiment that those of ordinary skill in the art are obtained on the premise of creative work is not made, all
Belong to the scope of the utility model protection.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.
In addition, in description of the present utility model, unless otherwise indicated, " multiple ", " many ", " multigroup " are meant that two
Individual or two or more, " several ", " some ", " some groups " are meant that one or more.
As shown in figure 1, the high precision displacement control cylinder device that the utility model embodiment is provided, including controller 4,
Hydraulic cylinder 1, the first displacement transducer 2 and second displacement sensor 3.Wherein, first displacement transducer 2, second displacement
Sensor 3 is arranged on the hydraulic cylinder 4, the stroke of the take-off lever for detecting hydraulic cylinder, and the amount of the first displacement transducer 2
Journey is more than the range of second displacement sensor 3；Action control component, the first displacement transducer of the controller 4 and hydraulic cylinder 1
2 and second displacement sensor 3 connect respectively, the controller 4 can receive first displacement transducer 2, second displacement
The Displacement Feedback signal of sensor 3, and hydraulic cylinder 1 can be controlled to act.
Wherein, hydraulic cylinder 1 is executing agency, is also the carrier of displacement transducer, its can be double acting bar or
Single-acting bar, namely the hydraulic cylinder 1 is single take-off lever hydraulic cylinder or lose-lose outlet-rod hydraulic cylinder, it is mainly by cylinder barrel, piston rod,
Piston, the composition such as end cap.The action control component of hydraulic cylinder can be servo valve either proportioning valve, and controller 4 passes through control
The flow of servo valve or proportioning valve exports to control the motion of hydraulic cylinder；The controller 4 is by collector respectively with described
One displacement transducer 2 and second displacement sensor 3 are connected, so as to obtain the first displacement transducer 2 and second displacement sensor 3
Feedback signal.
As a kind of implementation, the first displacement transducer 2 is arranged on the cylinder interior of hydraulic cylinder 1, first displacement
The fixing end of sensor 2 is connected with the rear sleeve of hydraulic cylinder 1, mobile terminal and the hydraulic cylinder 1 of first displacement transducer 2
Take-off lever is connected.The take-off lever action of hydraulic cylinder 1 drives the mobile terminal movement of the first displacement transducer 2, so that the first displacement is passed
Sensor 2 can monitor displacement measurement when hydraulic cylinder 1 is moved in real time, wherein, the range and stroke of first displacement transducer
All it is at least the exportable stroke of output rod end of hydraulic cylinder 1.
The second displacement sensor 3 is arranged on outside the cylinder body of hydraulic cylinder 1, the fixation of the second displacement sensor 3
End is fixedly connected with the cylinder body lateral wall of hydraulic cylinder 1, the mobile terminal of the second displacement sensor 3 and the take-off lever of hydraulic cylinder 1
The end connection on the outside of the cylinder body is exposed at, the mobile terminal of the second displacement sensor 3 is moved with the total travel of hydraulic cylinder 1, but
It is that second displacement sensor 3 compares the first displacement transducer 1, its range ability is smaller, has in its range ability more high-precision
The measurement capability of degree, during being normally applied, the stroke of the range of second displacement sensor 3 is not less than the take-off lever of hydraulic cylinder 1
Exportable stroke is held, but the range of second displacement sensor 3 is configured according to the actual requirements, general second displacement sensor 3
Range is arranged between the 1/10~1/100 of the output exportable stroke of rod end of hydraulic cylinder 1.
It should be noted that the set-up mode of the first displacement transducer 2 and second displacement sensor 3 is not limited to above-mentioned provide
Form, the inside that the first displacement transducer of the present embodiment 2 is arranged on cylinder body is a kind of preferred mode, and it has continued most of
The set-up mode of the displacement transducer of existing hydraulic cylinder 1, can so not change existing hydraulic cylinder 1 and its displacement biography
Under conditions of sensor, it is only necessary to increase second displacement sensor 3, scrap build is simple, reduced investment.
Specifically, it is provided with the first fixed seat, the take-off lever of the hydraulic cylinder and sets on the rear sleeve of the hydraulic cylinder 1
The second fixed seat is equipped with, first displacement transducer passes through the afterbody of the first fixed seat, the second fixed seat and hydraulic cylinder respectively
Sleeve, the take-off lever of hydraulic cylinder are fixedly connected.The 3rd fixed seat is provided with outside the cylinder body of the hydraulic cylinder, the hydraulic cylinder
Take-off lever, which is exposed on the end on the outside of the cylinder body, is provided with the 4th fixed seat, and the second displacement sensor passes through the 3rd respectively
Outside the cylinder body of fixed seat, the 4th fixed seat and hydraulic cylinder, the take-off lever of hydraulic cylinder be exposed on the outside of the cylinder body end connection.
As a kind of implementation, each fixed seat can pass through the connectors such as bolt and corresponding cylinder part and position
Displacement sensor is connected.The setting of fixed seat, not only facilitates the first displacement transducer 2 and second displacement sensor 3 and hydraulic cylinder
Be fixedly connected, be also convenient for the replacing of the first displacement transducer 2 and second displacement sensor 3.
The present embodiment high precision displacement control cylinder device controller according to the feedback signal of two displacement transducers come
Determine primary feedback signal and according to the displacement setting value of current period, the feedback shift value and displacement for calculating primary feedback signal are set
Error between value, generates control instruction and exports servo valve to hydraulic cylinder, realize real-time closed-loop control.
Hydraulic cylinder passes through two displacements when execution is acted described in the utility model high precision displacement control cylinder device
The mutual cooperation and switching of sensor complete hydraulic cylinder displacement acquisition and control, and pass through controller 4 reasonable selection, two displacements
The feedback signal of sensor, so as to realize big stroke and high precision displacement control simultaneously and measure, increases as primary feedback value
Add a small amount of production cost, reach more preferable effect, it is easy to operation.
Lower mask body introduces the control method that the present embodiment high precision displacement controls cylinder device, comprises the following steps that：
S1 controllers are according to displacement set value calculation hydraulic cylinder primary action.
S2 controllers receive the take-off lever after the hydraulic cylinder action of the first displacement transducer and the collection of the second level sensor
The feedback signal of displacement, and select primary feedback signal to participate in closed-loop control according to the value of feedback of feedback signal, and calculate displacement and set
The error of definite value and the primary feedback value of primary feedback signal.
S3 controllers control hydraulic cylinder to act again according to error amount.
S4 repeat steps S2, S3 are until the take-off lever of the hydraulic cylinder is accurately moved to setting displaced position.
Wherein, step S2, controller is received after the hydraulic cylinder action of the first displacement transducer and the collection of the second level sensor
Take-off lever displacement feedback signal, and two kinds of feelings are included according to the detailed process of the selection primary feedback signal of feedback signal
Condition：Situation one, (in figure, Y represents "Yes", and N represents "No") as shown in Figure 2, the take-off lever of the hydraulic cylinder is by big displacement region
It is moved to thin tail sheep region：The shift value of take-off lever is more than Shifted Reference value, and the controller selects the first displacement transducer
Signal is gathered as primary feedback signal, the shift value of take-off lever is not more than Shifted Reference value, and controller opens switching state, starts
Acquisition time is recorded, and judges whether acquisition time is more than temporal reference value；Acquisition time is not more than temporal reference value, controller
Select the collection signal of the first displacement transducer as primary feedback signal, acquisition time is more than temporal reference value, controller selection
The match value of the collection signal of first displacement transducer and second displacement sensor is opened simultaneously as primary feedback signal, and controller
Begin cycle-index of the record match value as primary feedback signal, and judges whether cycle-index is more than number of times reference value；Circulation time
Number is not more than number of times reference value, and controller continues to select the plan of the collection signal of the first displacement transducer and second displacement sensor
Conjunction value is more than number of times reference value as primary feedback signal, cycle-index, and controller exits switching state, and selects second displacement to pass
The collection signal of sensor is no longer participate in control as primary feedback signal, the collection signal of the first displacement transducer；It is wherein described to intend
Conjunction value is the weighted average of the feedback position value of the collection signal of the first displacement transducer and second displacement sensor.
Situation two, the take-off lever of the hydraulic cylinder is moved to big displacement region by thin tail sheep region：The shift value of take-off lever
Less than Shifted Reference value, the controller selects the collection signal of second displacement sensor as primary feedback signal, take-off lever
Shift value selects the collection signal of the first displacement transducer to be used as master not less than the displacement value controller of Shifted Reference value take-off lever
Feedback signal.
It should be noted that hydraulic cylinder is in the course of the work, the signal of the first displacement transducer and second displacement sensor
All the time in collected state.Carried out during Shifted Reference value according to the precision of the first displacement transducer and second displacement sensor
The specific shift value of boundary in a big displacement region and thin tail sheep region set in advance, temporal reference value is according to hydraulic cylinder
The advance time setting that actual use operating mode is carried out；Number of times reference value is set in advance according to the Shi Jishiyong operating mode of hydraulic cylinder
Cycle-index.
Specifically, the present embodiment high precision displacement controls the control method of cylinder device, when controller 4 works, simultaneously
Gather the signal of the first displacement transducer and the first displacement transducer, and the primary feedback collection circulation workflow according to Fig. 2
Journey, determines primary feedback value, and workflow is circulated further according to the control shown in Fig. 4, calculates control instruction and exports to hydraulic cylinder 1
Servo valve, and then control the take-off lever end displacement of hydraulic cylinder 1.The displacement transducer 2 of controller 4 and first and second displacement sensor
Collection cable connection is respectively adopted between 3, using control cable connection between controller 4 and the servo valve of hydraulic cylinder 1.
The control method primary feedback of the present embodiment high precision displacement control cylinder device determines that principle is as follows：
Set the displacement region of hydraulic cylinder to divide, be divided into big displacement region and thin tail sheep region；Thin tail sheep region is second
The displacement region that the range of displacement transducer 3 is covered, big displacement region is the exportable maximum displacement of take-off lever of hydraulic cylinder 1
Region removes other regions outside thin tail sheep region.
When hydraulic cylinder 1 is operated in big displacement region, controller 4 regard the collection signal of the first displacement transducer 2 as master
Value of feedback, participates in closed-loop control.
When the displacement of the output end of hydraulic cylinder 1 is moved to thin tail sheep region from big displacement region, controller 4 opens switching shape
State, after switching state is opened, preceding x the temporal reference value of the actual use operating mode setting of hydraulic cylinder (the x values according to) second, controller 4 according to
So using the collection signal of the first displacement transducer 2 as primary feedback value, after x seconds, controller 4 is fitted the first displacement transducer 2
With the collection signal of second displacement sensor 3, using match value as primary feedback value, closed-loop control is participated in.Meanwhile, controller 4 is opened
Metering function is opened, record is using cycle-index of the match value as primary feedback, and (n values are real according to hydraulic cylinder when this number of times is more than n
The circular reference value of border applying working condition setting) when, controller 4 exits switching state, and primary feedback signal is switched to from match value
The collection signal of second displacement sensor, the collection signal of the first displacement transducer 2 is no longer participate in control.
When the output end movement of hydraulic cylinder 1 is moved to big displacement region from thin tail sheep region, controller 4 is immediately by primary feedback
Signal switches to the collection signal of the first displacement transducer, second from the collection signal or match value of second displacement sensor 3
Displacement transducer B3 collection signal is no longer participate in control.
Controller 4 has the collection of at least two passage and a 1 passage fan-out capability, possesses the calibrating function of acquisition channel.Control
The collection value of 4 pair of first displacement transducer 2 of device and second displacement sensor 3 processed is demarcated, it is ensured that two displacement transducers exist
Minimum gap is all only existed in terms of collection signal in thin tail sheep region, middle position, amplitude, phase, the gap was switching
It can be neglected in journey.
In summary, the utility model high precision displacement control cylinder device, the simple cost of cylinder device processing is low,
Highly versatile, control accuracy is high, and control flow is simple, and application is wider.
It should be noted that hydraulic cylinder described in the utility model can be applied but is not limited in hydraulic vibration generator system,
It can make a variety of changes and expand on the premise of the utility model objective is not departed from, such as can be applied to identical use demand
Hydraulic displacement control system or electric displacement control system in, can play do not make in equivalent effect, the utility model in detail
Description.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：
It can still modify to the technical scheme described in foregoing embodiments, or which part technical characteristic is carried out etc.
With replacement；And these modifications or replacement, the essence of appropriate technical solution is departed from each embodiment technology of the utility model
The spirit and scope of scheme.
Claims (8)
1. a kind of high precision displacement controls cylinder device, it is characterised in that：Including controller, it is connected respectively with the controller
Hydraulic cylinder, the first displacement transducer and second displacement sensor, wherein, first displacement transducer and second displacement are passed
Sensor is separately positioned on the hydraulic cylinder, the travel displacement of the take-off lever for detecting hydraulic cylinder, and the first displacement transducer
Range be more than second displacement sensor range；
The controller can receive the Displacement Feedback signal and basis of first displacement transducer and second displacement sensor
Displacement Feedback signal behavior primary feedback signal, the controller controls hydraulic cylinder to act according to primary feedback signal, so as to form liquid
The closed-loop control of cylinder pressure action.
2. high precision displacement according to claim 1 controls cylinder device, it is characterised in that：First displacement sensing
Device is arranged on the inside of the cylinder body of the hydraulic cylinder, and the fixing end of first displacement transducer and the rear sleeve of hydraulic cylinder connect
Connect, the mobile terminal of first displacement transducer and the take-off lever of hydraulic cylinder are connected.
3. high precision displacement according to claim 1 controls cylinder device, it is characterised in that：The second displacement sensing
Device is arranged on outside the cylinder body of hydraulic cylinder, and the fixing end of the second displacement sensor and the cylinder body lateral wall of hydraulic cylinder are fixed and connected
Connect, the end that the mobile terminal of the second displacement sensor and the take-off lever of hydraulic cylinder are exposed on the outside of the cylinder body is connected.
4. high precision displacement according to claim 2 controls cylinder device, it is characterised in that：The afterbody of the hydraulic cylinder
It is provided with sleeve on the first fixed seat, the take-off lever of the hydraulic cylinder and is provided with the second fixed seat, first displacement sensing
Device is fixedly connected by the first fixed seat, the second fixed seat with the rear sleeve of hydraulic cylinder, the take-off lever of hydraulic cylinder respectively.
5. high precision displacement according to claim 3 controls cylinder device, it is characterised in that：The cylinder body of the hydraulic cylinder
Outside is provided with the 3rd fixed seat, and the take-off lever of the hydraulic cylinder, which is exposed on the end on the outside of the cylinder body, is provided with the 4th fixation
Seat, outside the cylinder body of the second displacement sensor respectively by the 3rd fixed seat, the 4th fixed seat and hydraulic cylinder, hydraulic cylinder
Take-off lever is exposed at the end connection on the outside of the cylinder body.
6. high precision displacement according to claim 1 controls cylinder device, it is characterised in that：First displacement sensing
The stroke and range of device are not less than the delivery stroke of the take-off lever of the hydraulic cylinder；
The stroke of the second displacement sensor is not less than the delivery stroke of the take-off lever of the hydraulic cylinder, the second displacement biography
The range of sensor is the 1/10~1/100 of the delivery stroke of the take-off lever of the hydraulic cylinder.
7. high precision displacement according to claim 1 controls cylinder device, it is characterised in that：The hydraulic cylinder is single defeated
Outlet-rod hydraulic cylinder or lose-lose outlet-rod hydraulic cylinder.
8. high precision displacement according to claim 1 controls cylinder device, it is characterised in that：The controller passes through control
Described in servo valve control processed hydraulic cylinder act, the controller by collector respectively with first displacement transducer and second
Displacement transducer is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201621492382.5U CN206368871U (en) | 2016-12-30 | 2016-12-30 | A kind of high precision displacement controls cylinder device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621492382.5U CN206368871U (en) | 2016-12-30 | 2016-12-30 | A kind of high precision displacement controls cylinder device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523462A (en) * | 2016-12-30 | 2017-03-22 | 北京强度环境研究所 | High-precision displacement control hydraulic cylinder system and control method thereof |
| CN109322874A (en) * | 2018-12-17 | 2019-02-12 | 湖北三江航天万山特种车辆有限公司 | A kind of high-precision processing position control hydraulic cylinder |
| CN110594233A (en) * | 2019-09-03 | 2019-12-20 | 浙江大学 | Hydraulic cylinder structure of hydraulic system with higher frequency response requirement and limited installation space |
-
2016
- 2016-12-30 CN CN201621492382.5U patent/CN206368871U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523462A (en) * | 2016-12-30 | 2017-03-22 | 北京强度环境研究所 | High-precision displacement control hydraulic cylinder system and control method thereof |
| CN106523462B (en) * | 2016-12-30 | 2018-02-13 | 北京强度环境研究所 | A kind of high precision displacement control cylinder device and its control method |
| CN109322874A (en) * | 2018-12-17 | 2019-02-12 | 湖北三江航天万山特种车辆有限公司 | A kind of high-precision processing position control hydraulic cylinder |
| CN109322874B (en) * | 2018-12-17 | 2020-07-03 | 湖北三江航天万山特种车辆有限公司 | Position control hydraulic cylinder for high-precision machining |
| CN110594233A (en) * | 2019-09-03 | 2019-12-20 | 浙江大学 | Hydraulic cylinder structure of hydraulic system with higher frequency response requirement and limited installation space |
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