CN2927141Y - Rang feedback controlling mechanism - Google Patents
Rang feedback controlling mechanism Download PDFInfo
- Publication number
- CN2927141Y CN2927141Y CN 200520060425 CN200520060425U CN2927141Y CN 2927141 Y CN2927141 Y CN 2927141Y CN 200520060425 CN200520060425 CN 200520060425 CN 200520060425 U CN200520060425 U CN 200520060425U CN 2927141 Y CN2927141 Y CN 2927141Y
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- CN
- China
- Prior art keywords
- piston rod
- displacement transducer
- ectosome
- piston
- feedback control
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- Expired - Lifetime
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Abstract
The utility model relates to a stroke feedback controlling assembly. An oil path of two ends of the main hydraulic cylinder piston is communicated with a solenoid valve, and a piston rod is connected with a signal collection terminal of a displacement sensor which can output stroke signals and input into the solenoid valve by a control circuit. The utility model, sensing the piston rod position by the linear displacement sensor, controlling an electrohydraulic proportional direction valve by controlling the circuit to process the sensing signals, accordingly, controls the piston location, thus achieving the aim of strike feedback control.
Description
Technical field:
The utility model relates to a kind of mechanical trip feedback control strategies.
Background technology:
The requirement that much need control stroke according to operating mode is more accurately arranged in commercial production, for example, the travel switch that a lot of occasions are used when the Be Controlled parts advance to the precalculated position, touches travel switch, the subsequent processing that begins to preset or stop a certain action, but Kong Zhi precision can only reach the millimeter level usually like this, is difficult to improve the precision of Stroke Control, again for example again, pneumatic equipment, the stroke of the valve of hydraulic cylinder, piston etc. also needs more accurate control.In addition, the requirement of industrial automation needs conveniently to carry out the travel feedback control gear of automatic control setting.
The utility model content:
The purpose of this utility model provides a kind of travel feedback control gear, and the relative position of stroke and controlled parts can accurately be measured and control in this mechanism, reliable and stable, and can satisfy the needs of in time adjusting the robotization control of position according to the operating mode needs.
The purpose of this utility model is achieved in that
A kind of travel feedback control gear, the oil duct at main hydraulic cylinder piston two ends communicates with solenoid valve, and piston rod links to each other with the signal collection end of displacement transducer, and the exportable stroke signal of displacement transducer is by control circuit input solenoid valve.
The utility model is by the position of linear displacement transducer induction piston bar, compare with the input data of the value of establishing circuit in the control circuit, when the position of piston rod and input value are not inconsistent, linear displacement transducer outputs signal to the comparator circuit of control circuit, through comparing, the current of electromagnet at output signal control electromagnetic valve two ends, electromagnet produces magnetic, attract its spool to depart from the equilibrium position to respective direction, oil circuit is communicated with, the oil pressure of piston one side increases, pressure oil enters in the cylinder body, promoting piston moves to respective direction, and the drive piston rod moves to respective direction, when piston rod movement arrives desired location, comparator circuit cuts off the current of electromagnet at solenoid valve two ends, and electromagnet loses magnetism, and its spool is replied the equilibrium position, oil circuit disconnects, hydraulic oil sealing in the cylinder body, and keep piston position motionless, thus make piston rod remain on definite position, realize the function of any control piston bar position, its control accuracy height can reach 0.1mm, and because the utilization hydraulic system, the piston rod movement driving force is big, and is reliable and stable.Owing to utilize the ferroelectric circulation of circuit controling electromagnetism disconnected, be swift in response.Simultaneously,, help realizing dynamic auto control, satisfy the requirement of robotization because the value of establishing circuit can be connected with real-time monitoring circuit.
Above-mentioned solenoid valve and control circuit are prior aries, and wherein comparator circuit can be realized by simple comparator circuit, also can wait by single-chip microcomputer and realize; If the value circuit can be realized by simple rheostat, also can realize by modes such as storeies.
Description of drawings
Fig. 1 is the synoptic diagram of the utility model when being applied to steam turbine with the steam flow operation valve.
Embodiment:
This embodiment is the application of the utility model on steam turbine usefulness steam flow operation valve.
A kind of travel feedback control gear, the oil duct 4 at main hydraulic cylinder piston 5 two ends communicates with solenoid valve 3, and piston rod 5.1 links to each other with the signal collection end of displacement transducer 6, and displacement transducer 6 exportable stroke signals are by control circuit input solenoid valve.
Piston rod 5.1 is linked to each other by pushing ram 1.2 with the main valve plug 1.1 of steam turbine with the steam flow operation valve, and main hydraulic cylinder 2 cylinder bodies are fixedlyed connected with main valve body.
Wherein solenoid valve 3 is a prior art, and its spool 3.2 can be fixed on valve inner equilibrium position along axial-movement and by multiple medi-spring 3.4 in valve body, and there is electromagnet 3.1 at the valve body two ends, and electrohydraulic proportional directional valve has oil input channel 3.6 and back oil road 3.5 in addition.
Described linear displacement transducer 6 also can be connected with piston rod 5.1 by connecting rod 6.1.
In the present embodiment, described linear displacement transducer 6 is made up of linear displacement transducer motion bar 6.2 and displacement transducer ectosome 6.3; Linear displacement transducer motion bar 6.2 is formed by connecting by about two sections, be inserted in the ectosome 6.3 in section be soft magnetic material, outer section is a diamagnetic material; Be placed with primary coils and secondary coil in the shell of ectosome 6.3 vertically, the electric signal that the external size of primary coils is stable, secondary coil is used for induction (output) position signalling, section on the motion bar, be that the soft magnetism section is in diverse location, cause induced field intensity difference, secondary coil will induce the strong and weak electricity signal of corresponding diverse location.The signal that secondary coil is sensed, be that the signal that main valve plug 1.1 position signalling gatherers are collected can constantly be delivered to outside comparison means, comparison means also can be constantly that the effector is given main valve opening control signal, compare union with it and handle, modulator control signal is made appropriate reaction to solenoid valve.
The ectosome 6.3 of described linear displacement transducer 6 also can directly be enclosed within on the piston rod 5.1, is soft magnetic material at the free end of piston rod, and an end that is connected with piston 5 is a diamagnetic material.
When new main valve of the given input of effector 1 opening signal during to the value of establishing circuit, the signal that linear displacement transducer 6 is sensed is the position of the main valve plug 1.1 of corresponding original opening, comparison means can be according to new main valve opening signal, compare with the signal of sensing, if difference is arranged, output signal is arrived solenoid valve 3, adjust the position of spool 3.2 by control electromagnet 3.1, oil circuit is communicated with, pressure oil enters in the cylinder body 2, promote piston 5 to respective direction, handle main valve plug 1.1 positions that main valve plug 1.1 moves to corresponding new main valve opening signal, disconnect electromagnet 3.1 power supplys then, spool 3.2 is returned to the equilibrium position under the effect of multiple medi-spring 3.4, advance, oil road 3.6,3.5 sealing, the pressure oil that is enclosed in the cylinder body 2 makes piston 5 be stabilized in this position.Thereby realize the function of control main valve plug 1.1 positions arbitrarily.
Claims (4)
1. travel feedback control gear, it is characterized in that: the oil duct (4) at main hydraulic cylinder (2) piston (5) two ends communicates with solenoid valve (3), piston rod (5.1) links to each other with the signal collection end of displacement transducer (6), the exportable stroke signal of displacement transducer (6) is by control circuit control electromagnetic valve (3).
2. travel feedback control gear according to claim 1 is characterized in that: described linear displacement transducer (6) is connected with piston rod (5.1) by connecting rod (6.1).
3. travel feedback control gear according to claim 1 is characterized in that: described linear displacement transducer (6) is made up of motion bar (6.2) and the ectosome (6.3) that is enclosed within (6.2) on the motion bar; Motion bar (6.2) is formed by connecting by about two sections, be inserted in the ectosome (6.3) in section be soft magnetic material, outer section is a diamagnetic material; Be placed with primary coils and secondary coil vertically in the shell of ectosome (6.3).
4. travel feedback control gear according to claim 1 is characterized in that: described linear displacement transducer (6) is made up of piston rod (5.1) and the ectosome (6.3) that is enclosed within on the piston rod (5.1); Piston rod (5.1) is formed by connecting by about two sections, be inserted in the ectosome (6.3) in section be soft magnetic material, outer section is a diamagnetic material; Be placed with primary coils and secondary coil vertically in the shell of ectosome (6.3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520060425 CN2927141Y (en) | 2005-06-28 | 2005-06-28 | Rang feedback controlling mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520060425 CN2927141Y (en) | 2005-06-28 | 2005-06-28 | Rang feedback controlling mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2927141Y true CN2927141Y (en) | 2007-07-25 |
Family
ID=38281392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520060425 Expired - Lifetime CN2927141Y (en) | 2005-06-28 | 2005-06-28 | Rang feedback controlling mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2927141Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705572A (en) * | 2012-06-13 | 2012-10-03 | 银川英奥特自控有限公司 | Long stroke feedback mechanism |
| CN103423218A (en) * | 2013-05-17 | 2013-12-04 | 北京航空航天大学 | Load-sensitive valve control integrated load loading device and control method thereof |
| CN103423237A (en) * | 2012-05-25 | 2013-12-04 | 上海爱德特检测设备制造有限公司 | Hydraulic cylinder stroke testing device |
| CN103498834A (en) * | 2013-10-23 | 2014-01-08 | 应俊波 | Device and method for feeding back position of straight-stroke pneumatic actuator |
| CN108916158A (en) * | 2018-07-31 | 2018-11-30 | 烟台未来自动装备有限责任公司 | A kind of oil cylinder stroke Detection & Controling method based on hydraulic oil volume flow |
-
2005
- 2005-06-28 CN CN 200520060425 patent/CN2927141Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103423237A (en) * | 2012-05-25 | 2013-12-04 | 上海爱德特检测设备制造有限公司 | Hydraulic cylinder stroke testing device |
| CN103423237B (en) * | 2012-05-25 | 2016-03-23 | 上海爱德特检测设备制造有限公司 | Hydraulic jack stroke test device |
| CN102705572A (en) * | 2012-06-13 | 2012-10-03 | 银川英奥特自控有限公司 | Long stroke feedback mechanism |
| CN102705572B (en) * | 2012-06-13 | 2013-08-14 | 银川英奥特自控有限公司 | Long stroke feedback mechanism |
| CN103423218A (en) * | 2013-05-17 | 2013-12-04 | 北京航空航天大学 | Load-sensitive valve control integrated load loading device and control method thereof |
| CN103423218B (en) * | 2013-05-17 | 2018-11-20 | 北京航空航天大学 | The valve control integration load charger and its control method of load-sensitive |
| CN103498834A (en) * | 2013-10-23 | 2014-01-08 | 应俊波 | Device and method for feeding back position of straight-stroke pneumatic actuator |
| CN103498834B (en) * | 2013-10-23 | 2016-08-17 | 应俊波 | Straight travel pneumatic actuating mechanism position feedback device and method |
| CN108916158A (en) * | 2018-07-31 | 2018-11-30 | 烟台未来自动装备有限责任公司 | A kind of oil cylinder stroke Detection & Controling method based on hydraulic oil volume flow |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150628 Granted publication date: 20070725 |
|
| EXPY | Termination of patent right or utility model |