CN108150482A - Self-adapting type reciprocating movement oil cylinder control method - Google Patents
Self-adapting type reciprocating movement oil cylinder control method Download PDFInfo
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- CN108150482A CN108150482A CN201711334898.6A CN201711334898A CN108150482A CN 108150482 A CN108150482 A CN 108150482A CN 201711334898 A CN201711334898 A CN 201711334898A CN 108150482 A CN108150482 A CN 108150482A
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000009434 installation Methods 0.000 claims abstract description 12
- 230000001914 calming effect Effects 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/28—Means for indicating the position, e.g. end of stroke
- F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT
-
- 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
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/857—Monitoring of fluid pressure systems
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention discloses a kind of self-adapting type reciprocating movement oil cylinder control method, the technical issues of for solving existing reciprocating movement oil cylinder control method poor practicability.Technical solution is mounted on cylinder tube (7) both ends by sensor (6), and distance of sensor (6) installation site apart from connector (5) is s, meets s ＞ Δs tvmax.Oil cylinder piston (8) run time is underrange, whether sensor (6) senses that as basis for estimation, a duration corrected duration Δ t and moved as this is increased or reduced to preceding primary movement duration for signal when oil cylinder piston (8) each run time all originates according to preceding primary movement.This addresses the problem what is generated in original oil cylinder of calming the anger persistently to hit cylinder phenomenon, reduces and hits cylinder noise, declines equipment overall noise, and practicability is good.
Description
Technical field
The present invention relates to a kind of reciprocating movement oil cylinder control method, more particularly to a kind of self-adapting type reciprocating movement oil cylinder control
Method processed.
Background technology
With reference to Fig. 2.It moves back and forth in existing reciprocating movement oil cylinder control method and is changed using position sensor sensing control
To.Two position sensors 6 are respectively disposed on 7 both ends of cylinder tube at cylinder bottom in this method, when the position of 7 side of cylinder tube
After sensor 6 senses oil cylinder piston 8, electro-hydraulic reversing valve starts to commutate at this time so that oil cylinder piston 8 drives cylinder piston 3 to open
Beginning counter motion, after 7 opposite side position sensor 6 of cylinder tube senses oil cylinder piston 8, electro-hydraulic reversing valve commutates again, oil
The cylinder piston 8 drives cylinder piston 3 to start return, so repeatedly.It, can only after 6 position of sensor is fixed in this reversing mode
Under the fixed specific operation of a certain admission pressure, ensure that piston runs to extreme position and do not generate and hit cylinder phenomenon, at remaining
Most of charging stage can all generate and persistently hit cylinder phenomenon, and cylinder noise is hit in generation, increase equipment overall noise, poor practicability.
Invention content
In order to overcome the shortcomings of existing reciprocating movement oil cylinder control method poor practicability, the present invention provides a kind of self-adapting type
Reciprocating movement oil cylinder control method.Sensor 6 is mounted on cylinder tube both ends, the distance connection of 6 installation site of sensor by this method
The distance of body 5 is s, meets s ＞ Δs tvmax.Oil cylinder piston run time is underrange, and the oil cylinder piston each run time is all
Whether sense that signal as basis for estimation, increases or reduces preceding primary movement duration according to sensor during preceding primary movement starting
One is corrected the duration that duration Δ t is moved as this.This addresses the problem the cylinders that persistently hits generated in original oil cylinder of calming the anger to show
As reducing and hitting cylinder noise, decline equipment overall noise, practicability is good.
The technical solution adopted by the present invention to solve the technical problems：A kind of self-adapting type reciprocating movement oil cylinder controlling party
Method, its main feature is that including the following steps：
Step 1: sensor 6 is mounted on 7 both ends of cylinder tube, distance of 6 installation site of sensor apart from connector 5 is
S meets s ＞ Δs tvmax。
In formula, s is distance of 6 installation site of sensor apart from connector 5；Δ t is corrects duration, vmaxFor admission pressure
The at the uniform velocity maximum value of exhaust process medium velocity when differing.
Step 2: hydraulic cylinder calculates oil cylinder piston 8 and moves to other end company from one end connector 5 by Stroke Control
The duration t of junctor 51, i.e., at the time of an end sensor 6 is sensed less than oil cylinder piston 8 oil cylinder can be sensed to another end sensor 6
At the time of piston 8, between the required time, with duration t1As after oil cylinder piston once movement needed for duration t2Basis when
It is long.
Step 3: during subsequent motion, before judgement during a movement starting of oil cylinder piston 8, if sensor 6 can be felt
Oil cylinder piston 8 should be arrived, illustrates that distance L of the oil cylinder piston 8 apart from connector 5 meets：L≤s, then this movement duration tn=tn-1-
Δ t, i.e., in preceding primary movement duration tn-1On the basis of reduce one amendment duration Δ t, as this movement needed for duration tn, tn
=tn-1-Δt；If sensor 6 does not sense oil cylinder piston 8, illustrate that distance L of the oil cylinder piston 8 apart from connector 5 meets：
L ＞ s, then this movement duration tn=tn-1+ Δ t, i.e., in preceding primary movement duration tn-1On the basis of increase one amendment duration
It is worth Δ t, as duration t needed for this movementn, tn=tn-1+Δt。
Specific basis for estimation is as follows：
1) when current primary movement starts, distance L of the oil cylinder piston 8 apart from connector 5 meets：L=0 meets：L≤s,
And oil cylinder piston 8 and 5 time of contact of connector meet to the duration T between the counter motion moment again：T >=Δ t, illustrates sensor
6 can sense oil cylinder piston 8, and oil cylinder piston 8 is contacted with connector 5, generate collision, and oil cylinder piston 8 stops one section in the side
Start counter motion after time again, then this movement oil cylinder piston 8 moves duration reducing △t, then oil cylinder piston 8 and connector 5
Time of contact is T- Δs t >=0, and speed at time of impact reduces, and cylinder noise is hit in reduction.
2) when current primary movement starts, distance L of the oil cylinder piston 8 apart from connector 5 meets：L=0 meets：L≤s,
And oil cylinder piston 8 and 5 time of contact of connector meet to the duration T between the counter motion moment again：T≤Δ t, illustrates sensor
6 can sense oil cylinder piston 8, and oil cylinder piston 8 is contacted with connector 5, generate collision, and oil cylinder piston 8 stops one section in the side
Starting counter motion after time again, then this movement oil cylinder piston 8 moves duration reducing △t, because of Δ t >=T, this oil
The cylinder piston 8 will not be contacted with connector 5, not collided, and will not be generated and be hit cylinder noise.
3) during current primary movement starting, distance L of the oil cylinder piston 8 apart from connector 5 meets：0 ＜ L≤s- Δ tv,
Meet：L≤s illustrates that sensor 6 can sense oil cylinder piston 8, then this movement oil cylinder piston 8 moves duration reducing △t, fortune
The dynamic oil cylinder piston more last reducing △t v of 8 move distance, when the movement of this oil cylinder piston 8 terminates, oil cylinder piston 8 is apart from even
The distance L of junctor 5 is：Δ tv ＜ L≤s, sensor can sense piston body when this movement terminates, and oil cylinder piston 8 does not have
Have and contacted with the generation of connector 5, do not hit cylinder noise.
4) during current primary movement starting, distance L of the oil cylinder piston 8 apart from connector 5 meets：S- Δ tv ＜ L≤s,
Illustrate that sensor 6 can sense oil cylinder piston 8, then this movement oil cylinder piston 8 moves duration reducing △t, moves oil cylinder piston 8
The more last reducing △t v of move distance, when the movement of this oil cylinder piston 8 terminates, distance of the oil cylinder piston 8 apart from connector 5
L is：S ＜ L≤s+ Δ tv, sensor does not sense piston body when this movement terminates, and oil cylinder piston 8 does not have and connector
5 generate contact, do not hit cylinder noise.
5) during current primary movement starting, distance L of the oil cylinder piston 8 apart from connector 5 meets：L ＞ s, illustrate sensor 6
Oil cylinder piston 8 is not sensed, then this movement oil cylinder piston 8, which moves duration, increases Δ t, moves 8 move distance of oil cylinder piston
More last increase Δ tv, when the movement of this oil cylinder piston 8 terminates, distance L of the oil cylinder piston 8 apart from connector 5 is：L ＞
S- Δ tv ＞ 0, sensor can sense piston body when this movement terminates, and oil cylinder piston 8 does not connect with the generation of connector 5
It touches, does not hit cylinder noise.
In work, by step 4) and step 5), expire distance of the oil cylinder piston 8 apart from connector 5 at the end of movement
Foot：S- Δ tv ＜ L≤s+ Δs tv.
Step 4: after being stopped and being again started up among compressor, the movement duration of oil cylinder piston 8 is according to last before shutdown
The movement duration t of entire motionn-1As the basic duration of this movement, judged according to step 3 to basic duration
Increased or reduced, the duration t as this movementn。
The beneficial effects of the invention are as follows：This method by sensor 6 be mounted on 7 both ends of cylinder tube, 6 installation site of sensor away from
It is s with a distance from connector 5, meets s ＞ Δs tvmax.8 run time of oil cylinder piston is underrange, and oil cylinder piston 8 is transported every time
Whether sensor 6 senses signal as basis for estimation when the row time all originates according to preceding primary movement, to preceding primary movement duration
It increases or reduces one and corrects the duration that duration Δ t is moved as this.This addresses the problem what is generated in original oil cylinder of calming the anger
Cylinder phenomenon is persistently hit, reduces and hits cylinder noise, declines equipment overall noise, practicability is good.
It is verified by different types of machines, when correction time Δ t is equal to 0.01s, 6 installation site of sensor is apart from connector 5
Distance s sizes be reduced to 3mm from 8mm, distance s namely cylinder of 6 installation site of sensor apart from connector 5 are averaged clearance,
Therefore the movement travel of oil cylinder of calming the anger is increased to 610mm from 600mm, single calm the anger oil cylinder rated discharge amount from 750Nm3It improves
To 800Nm3, tank car is made to unload gas time reduction 8%；The control of cylinder phenomenon will be hit within every tank car 10 times, and be only present in and just connect
Enter the tank car air source incipient stage, oil cylinder of calming the anger hits cylinder phenomenon in normal work and completely eliminates, and hydraulic cylinder noise is down to from 98dB
80dB, equipment overall noise are down to 92dB from 101dB.
It elaborates with reference to the accompanying drawings and detailed description to the present invention.
Description of the drawings
Fig. 1 is cylinder sensor scheme of installation of calming the anger in self-adapting type reciprocating movement oil cylinder control method of the present invention.
Fig. 2 is cylinder sensor scheme of installation of calming the anger in background technology reciprocating movement oil cylinder control method.
In figure, 1- cylinder head；2- cylinder barrels；3- cylinder pistons；4- piston rods；5- connectors；6- sensors；7- oil cylinders
Cylinder；8- oil cylinder pistons；9- pistons.
Specific embodiment
With reference to Fig. 1.Self-adapting type reciprocating movement oil cylinder control method of the present invention is as follows：
The motion process of oil cylinder of calming the anger is divided into three steps：Accelerate pressurization, at the uniform velocity exhaust process and moderating process.
Oil cylinder piston 8 drives cylinder piston 3 by piston rod 4, is accelerated since speed is 0, this process cylinder
Interior gas pressure constantly increases, and when increasing to setting pressure at expulsion, starts to be vented；Since pressure at expulsion is constant, thus into
The timing of atmospheric pressure one, exhaust process for oil cylinder piston 8 by piston rod 4 drive cylinder piston 3 by cylinder head 1, cylinder barrel 2,
It calms the anger in two individual cavitys that cylinder piston 3 and connector 5 form, makees uniform motion, speed v；Exhaust is finally
Stage makees retarded motion, and speed is from v until it is 0 to reduce to speed.
After single motion duration, which increases or reduces, corrects duration Δ t, due to accelerating supercharging and moderating process duration constant,
And at the uniform velocity process speed v is also constant, has only increased or reduced the duration of exhaust, and the move distance of oil cylinder piston 8 is made to increase or subtract
Small Δ tv, when admission pressure difference, the movement velocity v sizes of oil cylinder piston 8 are also different at the uniform velocity in exhaust process.During amendment
Long Δ t is set, and numerical value is smaller according to oil cylinder stroke or pattern.
Step 1: sensor 6 is mounted on oil cylinder both ends, distance of 6 installation site of sensor apart from connector 5 is s, full
Sufficient s ＞ Δs tvmax。
Step 2: after gas station gas handling system accesses new tank car air source, hydraulic cylinder is calculated fuel-displaced by Stroke Control
The cylinder piston 8 moves to the duration t of other end connector 5 from one end connector 51, i.e. an end sensor 6 sensed less than oil cylinder piston
At the time of sensing oil cylinder piston 8 to another end sensor 6 at the time of 8, between the required time be t1, in this, as
Duration t needed for once being moved after oil cylinder piston2Basic duration.
Step 3: during subsequent motion, before judgement during a movement starting of oil cylinder piston 8, if sensor 6 can be felt
Oil cylinder piston 8 should be arrived, illustrates that distance L of the oil cylinder piston 8 apart from connector 5 meets：L≤s, then this movement duration tn=tn-1-
Δ t, i.e., in preceding primary movement duration tn-1On the basis of reduce one amendment duration value Δ t, as this movement needed for duration
tn, tn=tn-1-Δt；If sensor 6 does not sense oil cylinder piston 8, illustrate distance L of the oil cylinder piston 8 apart from connector 5
Meet：L ＞ s, then this movement duration tn=tn-1+ Δ t, i.e., in preceding primary movement duration tn-1On the basis of increase one amendment
Duration value Δ t, as duration t needed for this movementn, tn=tn-1+Δt。
Specific basis for estimation is as follows：
1) when current primary movement starts, distance L of the oil cylinder piston 8 apart from connector 5 meets：L=0 meets：L≤s,
And oil cylinder piston 8 and 5 time of contact of connector meet to the duration T between the counter motion moment again：T >=Δ t, illustrates sensor
6 can sense oil cylinder piston 8, and oil cylinder piston 8 is contacted with connector 5, generate collision, and oil cylinder piston 8 stops one section in the side
Start counter motion after time again, then this movement oil cylinder piston 8 moves duration reducing △t, then oil cylinder piston 8 and connector 5
Time of contact is T- Δs t >=0, and speed at time of impact reduces, and cylinder noise is hit in reduction.
2) when current primary movement starts, distance L of the oil cylinder piston 8 apart from connector 5 meets：L=0 meets：L≤s,
And oil cylinder piston 8 and 5 time of contact of connector meet to the duration T between the counter motion moment again：T≤Δ t, illustrates sensor
6 can sense oil cylinder piston 8, and oil cylinder piston 8 is contacted with connector 5, generate collision, and oil cylinder piston 8 stops one section in the side
Starting counter motion after time again, then this movement oil cylinder piston 8 moves duration reducing △t, because of Δ t >=T, this oil
The cylinder piston 8 will not be contacted with connector, not collided, and will not be generated and be hit cylinder noise.
3) during current primary movement starting, distance L of the oil cylinder piston 8 apart from connector 5 meets：0 ＜ L≤s- Δ tv,
Meet：L≤s illustrates that sensor 6 can sense oil cylinder piston 8, then this movement oil cylinder piston 8 moves duration reducing △t, fortune
The dynamic oil cylinder piston more last reducing △t v of 8 move distance, when the movement of this oil cylinder piston 8 terminates, oil cylinder piston 8 is apart from even
The distance L of junctor 5 is：Δ tv ＜ L≤s, so, sensor can sense piston body when this movement terminates, and oil cylinder is lived
Plug 8 is not contacted with the generation of connector 5, does not hit cylinder noise.
4) during current primary movement starting, distance L of the oil cylinder piston 8 apart from connector 5 meets：S- Δ tv ＜ L≤s,
Illustrate that sensor 6 can sense oil cylinder piston 8, then this movement oil cylinder piston 8 moves duration reducing △t, moves oil cylinder piston 8
The more last reducing △t v of move distance, when the movement of this oil cylinder piston 8 terminates, distance of the oil cylinder piston 8 apart from connector 5
L is：S ＜ L≤s+ Δ tv, so, sensor does not sense piston body when this movement terminates, oil cylinder piston 8 not with
Connector 5 generates contact, does not hit cylinder noise.
5) during current primary movement starting, distance L of the oil cylinder piston 8 apart from connector 5 meets：L ＞ s, illustrate sensor 6
Oil cylinder piston 8 is not sensed, then this movement oil cylinder piston 8, which moves duration, increases Δ t, moves 8 move distance of oil cylinder piston
More last increase Δ tv, when the movement of this oil cylinder piston 8 terminates, distance L of the oil cylinder piston 8 apart from connector 5 is：L ＞
S- Δ tv ＞ 0, so sensor can sense piston body when this movement terminates, oil cylinder piston 8 is not produced with connector 5
Raw contact, does not hit cylinder noise.
Step 4: after being stopped and being again started up among compressor, the movement duration of oil cylinder piston 8 is according to complete before shutdown
The basic duration that is moved as this of primary movement duration, judged to increase basic duration according to step 3 or
Reduce, the duration as this movement
In normal work, it is substantially carried out judgement 4) and judge 5), to make oil cylinder piston 8 at the end of movement apart from connector 5
Distance meet：S- Δ tv ＜ L≤s+ Δs tv.
Due to admission pressure consecutive variations, also consecutive variations occur hydraulic system pressure for consecutive variations, pump discharge so that oil
Velocity magnitude also consecutive variations of the cylinder piston 8 when being at the uniform velocity vented, when the velocity variations cause oil cylinder piston 8 to hit cylinder or distance
The distance of connector is excessive, can also be carried out continuously and judge 4) or judge 5), to increase the operation duration of oil cylinder piston 8 for several times
Big or reduction, to ensure that distance of the oil cylinder piston 8 apart from connector 5 at the end of movement meets：S- Δ tv ＜ L≤s+ Δs
t·v。
Claims (1)
1. a kind of self-adapting type reciprocating movement oil cylinder control method, it is characterised in that include the following steps：
Step 1: by sensor (6) mounted on cylinder tube (7) both ends, sensor (6) installation site apart from connector (5) away from
From for s, meet s ＞ Δs tvmax；
In formula, s is distance of sensor (6) installation site apart from connector (5)；Δ t is corrects duration, vmaxFor admission pressure
The at the uniform velocity maximum value of exhaust process medium velocity when differing；
Step 2: hydraulic cylinder calculates oil cylinder piston (8) and moves to other end company from one end connector (5) by Stroke Control
The duration t of junctor (5)1, i.e. can feel to another end sensor (6) at the time of an end sensor (6) sensing is less than oil cylinder piston (8)
At the time of oil cylinder piston (8) should be arrived, between the required time, with duration t1As after oil cylinder piston once movement needed for duration
t2Basic duration；
Step 3: during subsequent motion, before judgement during oil cylinder piston (8) movement starting, if sensor (6) can be felt
Oil cylinder piston (8) should be arrived, illustrates that distance L of the oil cylinder piston (8) apart from connector (5) meets：L≤s, then this movement duration tn
=tn-1Δ t, i.e., in preceding primary movement duration tn-1On the basis of reduce one amendment duration Δ t, taken as this movement
Long tn, tn=tn-1-Δt；If sensor (6) does not sense oil cylinder piston (8), illustrate oil cylinder piston (8) apart from connector
(5) distance L meets：L ＞ s, then this movement duration tn=tn-1+ Δ t, i.e., in preceding primary movement duration tn-1On the basis of increase
Big amendment duration value Δ t, as duration t needed for this movementn, tn=tn-1+Δt；
Specific basis for estimation is as follows：
1) when current primary movement starts, distance L of the oil cylinder piston (8) apart from connector (5) meets：L=0 meets：L≤s,
And oil cylinder piston (8) and connector (5) time of contact meet to the duration T between the counter motion moment again：T >=Δ t, illustrates to pass
Sensor (6) can sense oil cylinder piston (8), and oil cylinder piston (8) is contacted with connector (5), generate collision, and oil cylinder piston (8)
Start counter motion again after stopping a period of time in the side, then this movement oil cylinder piston (8) moves duration reducing △t, then oily
The cylinder piston (8) is T- Δs t >=0 with connector (5) time of contact, and speed at time of impact reduces, and cylinder noise is hit in reduction；
2) when current primary movement starts, distance L of the oil cylinder piston (8) apart from connector (5) meets：L=0 meets：L≤s,
And oil cylinder piston (8) and connector (5) time of contact meet to the duration T between the counter motion moment again：T≤Δ t, illustrates to pass
Sensor (6) can sense oil cylinder piston (8), and oil cylinder piston (8) is contacted with connector (5), generate collision, and oil cylinder piston (8)
Starting counter motion again after stopping a period of time in the side, then this movement oil cylinder piston (8) moves duration reducing △t, because
Δ t >=T so this oil cylinder piston (8) will not be contacted with connector (5), does not collide, will not generate and hit cylinder noise；
3) during current primary movement starting, distance L of the oil cylinder piston (8) apart from connector (5) meets：0 ＜ L≤s- Δ tv,
Meet：L≤s illustrates that sensor (6) can sense oil cylinder piston (8), then this movement oil cylinder piston (8) moves duration and reduces
Δ t moves the more last reducing △t v of oil cylinder piston (8) move distance, when the movement of this oil cylinder piston (8) terminates, oil cylinder
Distance L of the piston (8) apart from connector (5) be：Δ tv ＜ L≤s, sensor can sense piston when this movement terminates
Body, oil cylinder piston (8) are not contacted with connector (5) generation, do not hit cylinder noise；
4) during current primary movement starting, distance L of the oil cylinder piston (8) apart from connector (5) meets：S- Δ tv ＜ L≤s,
Illustrate that sensor (6) can sense oil cylinder piston (8), then this movement oil cylinder piston (8) moves duration reducing △t, movement oil
The more last reducing △t v of the cylinder piston (8) move distance, when the movement of this oil cylinder piston (8) terminates, oil cylinder piston (8) distance
The distance L of connector (5) is：S ＜ L≤s+ Δ tv, sensor does not sense piston body when this movement terminates, and oil cylinder is lived
Plug (8) is not contacted with connector (5) generation, does not hit cylinder noise；
5) during current primary movement starting, distance L of the oil cylinder piston (8) apart from connector (5) meets：L ＞ s, illustrate sensor
(6) oil cylinder piston (8) is not sensed, then this movement oil cylinder piston (8), which moves duration, increases Δ t, movement oil cylinder piston (8)
The more last increase Δ tv of move distance, when the movement of this oil cylinder piston (8) terminates, oil cylinder piston (8) is apart from connector (5)
Distance L be：L ＞ s- Δ tv ＞ 0, sensor can sense piston body when this movement terminates, and oil cylinder piston (8) does not have
It is contacted with connector (5) generation, does not hit cylinder noise；
In work, by step 4) and step 5), expire distance of the oil cylinder piston (8) apart from connector (5) at the end of movement
Foot：S- Δ tv ＜ L≤s+ Δs tv；
Step 4: after being stopped and being again started up among compressor, the movement duration of oil cylinder piston (8) according to before shutting down last
The movement duration t of secondary entire motionn-1As the basic duration of this movement, progress when being judged according to step 3 to basis
Row increase reduces, the duration t as this movementn。
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|---|---|---|---|
| CN201711334898.6A CN108150482B (en) | 2017-12-14 | 2017-12-14 | Self-adapting type reciprocating movement oil cylinder control method |
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| CN201711334898.6A CN108150482B (en) | 2017-12-14 | 2017-12-14 | Self-adapting type reciprocating movement oil cylinder control method |
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| CN108150482B CN108150482B (en) | 2019-08-23 |
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| DE102012001271A1 (en) * | 2012-01-25 | 2013-07-25 | Fludicon Gmbh | Magneto-rheological positioning device for controlling linear velocity and to position piston or piston rod, has control unit connected with position sensor, which controls flow by magneto-rheological valve or electro-rheological valve |
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| CN204003778U (en) * | 2014-07-30 | 2014-12-10 | 三一重工股份有限公司 | A kind of protector for sensor, oil cylinder and engineering machinery |
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2017
- 2017-12-14 CN CN201711334898.6A patent/CN108150482B/en not_active Expired - Fee Related
Patent Citations (7)
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|---|---|---|---|---|
| US20050232069A1 (en) * | 2004-04-19 | 2005-10-20 | Dns Co., Ltd. | Concrete-mortar transfer system of concrete pump car |
| CN201714733U (en) * | 2010-06-25 | 2011-01-19 | 格力乐液压***(常州)有限公司 | Servo hydraulic oil cylinder |
| CN102182729A (en) * | 2011-05-15 | 2011-09-14 | 浙江大学 | Large-flow high-frequency response electrohydraulic vibration device based on parallel servo valves and control method |
| DE102012001271A1 (en) * | 2012-01-25 | 2013-07-25 | Fludicon Gmbh | Magneto-rheological positioning device for controlling linear velocity and to position piston or piston rod, has control unit connected with position sensor, which controls flow by magneto-rheological valve or electro-rheological valve |
| CN102744345A (en) * | 2012-07-19 | 2012-10-24 | 浙江大学 | Hydraulic system of buffering cylinder of forging manipulator |
| CN203161718U (en) * | 2013-02-25 | 2013-08-28 | 三一重工股份有限公司 | Oil cylinder displacement measuring device and pumping system |
| CN204003778U (en) * | 2014-07-30 | 2014-12-10 | 三一重工股份有限公司 | A kind of protector for sensor, oil cylinder and engineering machinery |
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| CN108150482B (en) | 2019-08-23 |
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