CN106402090A - Pressure induction device of hydraulic electric control system and control method of pressure induction device - Google Patents
Pressure induction device of hydraulic electric control system and control method of pressure induction device Download PDFInfo
- Publication number
- CN106402090A CN106402090A CN201610930296.6A CN201610930296A CN106402090A CN 106402090 A CN106402090 A CN 106402090A CN 201610930296 A CN201610930296 A CN 201610930296A CN 106402090 A CN106402090 A CN 106402090A
- Authority
- CN
- China
- Prior art keywords
- pressure sensor
- pressure
- signal
- standby
- control system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Safety Devices In Control Systems (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a pressure induction device of a hydraulic electric control system. A pressure induction unit is arranged on a hydraulic pipeline of the hydraulic electric control system, the pressure induction unit outputs pressure signals to a pressure closed-loop control loop, the pressure induction unit comprises a main pressure sensor and a standby pressure sensor, the main pressure sensor and the standby pressure sensor output the pressure signals to the pressure closed-loop control loop through a two-path-input one-path-output switching switch, and output the signals to a PLC, and the PLC outputs switching signals to the switching switch. According to a pressure sensor automatic switching system, a double-pressure detection point spare control mode is used, the automatic switching system is used, free-failure online use is always ensured, and high-precision, rapid-response and good-stability pressure control is always ensured.
Description
Technical field
The present invention relates in electrichydraulic control field, more particularly, to electrohydraulic control system pressure sensor automatic switchover system
System.
Background technology
At present, the control system of domestic and international Hot Strip Rolling milling equipment is essentially all electrohydraulic control system, all of
Accurate control section (as kink, HGC roll gap, template roller) etc. is all double servo closed controls of position and pressure feedback, with
The continuous improvement that Modern Rolling Mill requires to rolling kind and end product quality, the precision that key equipment is controlled and response speed will
Ask and also improve constantly.Wherein, the precision of pressure detecting is most important to the stability of whole control system and precision.
But the electrical equipment catastrophic discontinuityfailure of pressure sensor in actual production process, often occurs, or violent
Vibration, hydraulic system fluctuation, there is the fluctuation of pressure detecting signal when electromagnetic interference, build-up of pressure value of feedback precision
Decline, or even mistake, lead to control accuracy to reduce, or even triggering Wrong control action, lead to piling of steel stopping accident when rolling,
And equipment damage accident, strong influence is caused to the steady production of producing line.
Content of the invention
The present invention solves in production process because of the catastrophic discontinuityfailure of pressure sensor, or the mistake that accuracy of detection error causes
Control action by mistake, the piling of steel leading to is shut down and equipment damage accident, is always ensured that pressure controlled high accuracy, high response and height are steady
Qualitative.
To achieve these goals, the technical solution used in the present invention is：The pressure sensitive device of hydraulic electric control system, liquid
Voltage control system is provided with pressure sensitive unit on fluid pressure line, and described pressure sensitive unit output pressure signal is to hydraulic electric control
The pressure closed loop control loop of system, described pressure sensitive unit includes primary pressure sensor and standby pressure sensor, described
Primary pressure sensor and standby pressure sensor switch output pressure signal to pressure by the switching of two-way input one tunnel output
Close loop control circuit, described primary pressure sensor and standby pressure sensor all output signal to PLC, described PLC output switching
Signal is to switching switch.
Described PLC is connected with warning device.
Described PLC is provided with wireless communication unit, and described wireless communication unit is led to far-end server and/or mobile device
Letter.
Described pressure sensitive unit be provided with multiple, be separately mounted to hydraulic valve platform, cylinder, on pipeline.
Described primary pressure sensor and standby pressure sensor by threeway or adapter be arranged on hydraulic valve platform, cylinder,
On pipeline.
The control method of the pressure sensitive device based on described hydraulic electric control system：
1) PLC gathers the signal of primary pressure sensor and standby pressure sensor；
2) judge signal collected whether normal；
3) if primary pressure sensor signal is normal, execute next step, if primary pressure sensor abnormal signal, execute step
Rapid 7)；If standby pressure sensor signal is normal, execute next step, if standby pressure sensor signal is abnormal, fault report
Alert；
4) primary pressure sensor and the signal traversing of probe cycle pressure value of feedback undulate quantity of standby pressure sensor are compared
Whether normal；
5) if primary pressure sensor undulate quantity is normal, execute next step, if primary pressure sensor abnormal signal, carry out
Test point precision is reported to the police；If standby pressure sensor undulate quantity is normal, execute next step, if standby pressure sensor undulate quantity
Abnormal, then fault alarm；
6) control switching switch, primary pressure sensor signal is delivered to pressure closed loop control loop, return 1)；
7) control switching switch, standby pressure sensor signal is delivered to pressure closed loop control loop, return 1).
Described step 2), 3) in primary pressure sensor and standby pressure sensor collection signal parameter in 4mA≤feedback
In the range of electric current≤20mA or 0V≤feedback voltage≤10V, then signal is normal, otherwise then abnormal.
Described step 4), 5) in primary pressure sensor and standby pressure sensor collection signal period pressure feedback value ripple
Momentum≤5Mpa, then signal is normal, otherwise then abnormal.
The present invention is pressure sensor automatic switchover system, using double pressure detecting points control model standby each other, and
Using automatic switchover system, it is always ensured that and uses fault-free online, and be always ensured that pressure controlled high accuracy, response are fast and steady
Qualitative good.
, after this system, loop tension control accuracy can be made to keep good taking hot rolling 2250 hot finisher kink as a example
Good, within positive and negative 3mpa, reduce the piling of steel accident leading to because of kink pressure sensor failure or fluctuation problem.And this is
The use of system also can be greatly shortened the process time of pressure sensor failure, and every fault time (processes piling of steel, changes pressure
Sensor etc.) average about 60 minutes, after this system, pressure sensor can achieve that fault automatically switches and reports to the police, Awaiting Overhaul
Time changes fault part again, can reduce considerable fault time for producing line every year.Similar producing line other electrichydraulic control equipment is all
There are such potential faults, this system can be promoted in accordance with the law, to steady production, fault is greatly decreased and can obtain good effect.
Brief description
Below the content of width accompanying drawing expression every in description of the invention is briefly described：
Fig. 1 is the pressure sensitive device block diagram of hydraulic electric control system；
Fig. 2 is the pressure sensitive device control flow chart of hydraulic electric control system.
Specific embodiment
Hydraulic electric control system is provided with pressure sensitive unit on fluid pressure line, and pressure sensitive unit is typically mounted at hydraulic valve
On the relevant devices such as platform, cylinder, pipeline, as shown in figure 1, original single pressure sensor test point is transformed double pressure sensings by the present invention
Device test point, two sensor the using and the reserved, primary pressure sensor and standby pressure sensor pass through threeway or adapter peace
Be contained in hydraulic valve platform, cylinder, on pipeline.
Primary pressure sensor and standby pressure sensor switch output pressure letter by the switching of two-way input one tunnel output
Number to pressure closed loop control loop, primary pressure sensor and standby pressure sensor all output signal to PLC, PLC output switching
Signal is connected with warning device to switching switch, PLC, can be reported to the police in abnormal signal, PLC is provided with radio communication list
Unit, wireless communication unit is with far-end server and/or mobile device communication it is also possible to signal of offering sends to far-end, conveniently
Staff safeguards in time.
Based on the pressure sensitive device of above-mentioned hydraulic electric control system, PLC control system and program design double pressure
The automatic switchover system of sensor：The state that online real-time judge is advocated peace for two pressure sensors, judgment mode is by pressure
The feedback current of force snesor, voltage change situation, the technical parameter such as rate of change of feedback pressure is on-line automatic to judge its yuan
Whether part breaks down, and whether the speed of response and feedback accuracy are in normal range (NR), if it is determined that master reference state has exception, and
Standby pressure sensor state is normal, then quickly switch to standby pressure sensor and use, and send warning to host computer
Information.
Concrete grammar is as follows：
1) PLC gathers the signal of primary pressure sensor and standby pressure sensor；
2) judge signal collected whether normal；The signal parameter of primary pressure sensor and the collection of standby pressure sensor exists
In the range of 4mA≤feedback current≤20mA or 0V≤feedback voltage≤10V, then signal is normal, otherwise then abnormal；
3) if primary pressure sensor signal is normal, execute next step, if primary pressure sensor abnormal signal, execute step
Rapid 7)；If standby pressure sensor signal is normal, execute next step, if standby pressure sensor signal is abnormal, fault report
Alert；
4) primary pressure sensor and the signal traversing of probe cycle pressure value of feedback undulate quantity of standby pressure sensor are compared
Whether normal；Primary pressure sensor and the signal period pressure feedback value undulate quantity≤5Mpa of standby pressure sensor collection, then
Signal is normal, otherwise then abnormal；
5) if primary pressure sensor undulate quantity is normal, execute next step, if primary pressure sensor abnormal signal, carry out
Test point precision is reported to the police；If standby pressure sensor undulate quantity is normal, execute next step, if standby pressure sensor undulate quantity
Abnormal, then fault alarm；
6) control switching switch, primary pressure sensor signal is delivered to pressure closed loop control loop, return 1)；
7) control switching switch, standby pressure sensor signal is delivered to pressure closed loop control loop, return 1).
Above in conjunction with accompanying drawing, the present invention is exemplarily described it is clear that the present invention implements is not subject to aforesaid way
Restriction, as long as employing the improvement of various unsubstantialities that method of the present invention design and technical scheme are carried out, or without changing
Enter and the design of the present invention and technical scheme are directly applied to other occasions, all within protection scope of the present invention.
Claims (8)
1. the pressure sensitive device of hydraulic electric control system, hydraulic electric control system is provided with pressure sensitive unit, institute on fluid pressure line
State pressure sensitive unit output pressure signal to the pressure closed loop control loop of hydraulic electric control system it is characterised in that：Described pressure
Power sensing unit includes primary pressure sensor and standby pressure sensor, and described primary pressure sensor and standby pressure sensor lead to
The switching switch output pressure signal crossing two-way input one tunnel output to pressure closed loop control loop, described primary pressure sensor and
Standby pressure sensor all outputs signal to PLC, and described PLC output switching signal is to switching switch.
2. hydraulic electric control system according to claim 1 pressure sensitive device it is characterised in that：Described PLC is connected with
Warning device.
3. hydraulic electric control system according to claim 1 and 2 pressure sensitive device it is characterised in that：Described PLC is provided with
Wireless communication unit, described wireless communication unit and far-end server and/or mobile device communication.
4. hydraulic electric control system according to claim 3 pressure sensitive device it is characterised in that：Described pressure sensitive list
Unit be provided with multiple, be separately mounted to hydraulic valve platform, cylinder, on pipeline.
5. the hydraulic electric control system according to claim 1,2 or 4 pressure sensitive device it is characterised in that：Described main pressure
Force snesor and standby pressure sensor by threeway or adapter be arranged on hydraulic valve platform, cylinder, on pipeline.
6. the control method of the pressure sensitive device based on the hydraulic electric control system any one of claim 1-5, it is special
Levy and be：
1) PLC gathers the signal of primary pressure sensor and standby pressure sensor；
2) judge signal collected whether normal；
3) if primary pressure sensor signal is normal, execute next step, if primary pressure sensor abnormal signal, execution step
7)；If standby pressure sensor signal is normal, execute next step, if standby pressure sensor signal is abnormal, fault alarm；
4) whether compare the signal traversing of probe cycle pressure value of feedback undulate quantity of primary pressure sensor and standby pressure sensor
Normally；
5) if primary pressure sensor undulate quantity is normal, execute next step, if primary pressure sensor abnormal signal, detected
Point precision is reported to the police；If standby pressure sensor undulate quantity is normal, execute next step, if standby pressure sensor undulate quantity is different
Often, then fault alarm；
6) control switching switch, primary pressure sensor signal is delivered to pressure closed loop control loop, return 1)；
7) control switching switch, standby pressure sensor signal is delivered to pressure closed loop control loop, return 1).
7. control method according to claim 6 it is characterised in that：Described step 2), 3) in primary pressure sensor and standby
The signal parameter being gathered with pressure sensor in the range of 4mA≤feedback current≤20mA or 0V≤feedback voltage≤10V, is then believed
Number normal, on the contrary then abnormal.
8. the control method according to claim 6 or 7 it is characterised in that：Described step 4), 5) in primary pressure sensor and
The signal period pressure feedback value undulate quantity≤5Mpa of standby pressure sensor collection, then signal is normal, otherwise then abnormal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610930296.6A CN106402090B (en) | 2016-10-31 | 2016-10-31 | The pressure sensitive device and its control method of hydraulic electric control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610930296.6A CN106402090B (en) | 2016-10-31 | 2016-10-31 | The pressure sensitive device and its control method of hydraulic electric control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106402090A true CN106402090A (en) | 2017-02-15 |
| CN106402090B CN106402090B (en) | 2018-01-02 |
Family
ID=58013488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610930296.6A Active CN106402090B (en) | 2016-10-31 | 2016-10-31 | The pressure sensitive device and its control method of hydraulic electric control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106402090B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108655193A (en) * | 2017-03-31 | 2018-10-16 | 上海梅山钢铁股份有限公司 | Sensor hot standby control device online |
| CN111764984A (en) * | 2020-06-29 | 2020-10-13 | 潍柴重机股份有限公司 | Pressure sensor device and control method |
| CN112051464A (en) * | 2020-08-25 | 2020-12-08 | 中国航空工业集团公司沈阳飞机设计研究所 | Fault detection method and system for dual-channel airborne pressure sensor |
| CN114216211A (en) * | 2021-12-16 | 2022-03-22 | 珠海格力电器股份有限公司 | Filter screen filth blockage detection assembly of fresh air conditioner, fresh air conditioner and control method of fresh air conditioner |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201586664U (en) * | 2009-12-31 | 2010-09-22 | 秦皇岛首秦金属材料有限公司 | Roller-bending control on-line switching device of rolling mill |
| CN203621109U (en) * | 2013-11-12 | 2014-06-04 | 北京首钢自动化信息技术有限公司 | Cold rolling hydraulic roll gap control pressure detection redundancy switch system |
| CN105363802A (en) * | 2015-12-08 | 2016-03-02 | 北京首钢冷轧薄板有限公司 | Piston side pressure online redundancy detecting method of HGC hydraulic cylinder in continuous rolling machine |
| CN205193611U (en) * | 2015-12-15 | 2016-04-27 | 九江环球科技股份有限公司 | Redundant synchronous electrohydraulic control ware of turbine TRT unit intelligence high accuracy |
| CN206257111U (en) * | 2016-10-31 | 2017-06-16 | 马鞍山钢铁股份有限公司 | The pressure sensitive device of hydraulic electric control system |
-
2016
- 2016-10-31 CN CN201610930296.6A patent/CN106402090B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201586664U (en) * | 2009-12-31 | 2010-09-22 | 秦皇岛首秦金属材料有限公司 | Roller-bending control on-line switching device of rolling mill |
| CN203621109U (en) * | 2013-11-12 | 2014-06-04 | 北京首钢自动化信息技术有限公司 | Cold rolling hydraulic roll gap control pressure detection redundancy switch system |
| CN105363802A (en) * | 2015-12-08 | 2016-03-02 | 北京首钢冷轧薄板有限公司 | Piston side pressure online redundancy detecting method of HGC hydraulic cylinder in continuous rolling machine |
| CN205193611U (en) * | 2015-12-15 | 2016-04-27 | 九江环球科技股份有限公司 | Redundant synchronous electrohydraulic control ware of turbine TRT unit intelligence high accuracy |
| CN206257111U (en) * | 2016-10-31 | 2017-06-16 | 马鞍山钢铁股份有限公司 | The pressure sensitive device of hydraulic electric control system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108655193A (en) * | 2017-03-31 | 2018-10-16 | 上海梅山钢铁股份有限公司 | Sensor hot standby control device online |
| CN111764984A (en) * | 2020-06-29 | 2020-10-13 | 潍柴重机股份有限公司 | Pressure sensor device and control method |
| CN112051464A (en) * | 2020-08-25 | 2020-12-08 | 中国航空工业集团公司沈阳飞机设计研究所 | Fault detection method and system for dual-channel airborne pressure sensor |
| CN114216211A (en) * | 2021-12-16 | 2022-03-22 | 珠海格力电器股份有限公司 | Filter screen filth blockage detection assembly of fresh air conditioner, fresh air conditioner and control method of fresh air conditioner |
| CN114216211B (en) * | 2021-12-16 | 2022-09-23 | 珠海格力电器股份有限公司 | Filter screen filth blockage detection assembly of fresh air conditioner, fresh air conditioner and control method of fresh air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106402090B (en) | 2018-01-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106402090B (en) | The pressure sensitive device and its control method of hydraulic electric control system | |
| CN106227195B (en) | A kind of fault detection judges compensation triple redundance method of servo-controlling | |
| JP2013501945A (en) | General-purpose sensor self-diagnosis device and diagnosis method thereof | |
| CN206257111U (en) | The pressure sensitive device of hydraulic electric control system | |
| CN107544366B (en) | Method for collecting and processing signals of redundant sensors in automatic control system | |
| CN105911938B (en) | A kind of position calibration method, system and automatic monitoring method | |
| CN204990726U (en) | Traffic signal controller's intellectual detection system device | |
| CN104444929A (en) | Car lifting jack height sensor self-detecting method | |
| CN114485379A (en) | Transformer winding on-line monitoring method | |
| CN201586664U (en) | Roller-bending control on-line switching device of rolling mill | |
| CN101788626B (en) | Method for distinguishing disconnection manner of displacement transducer LVDT | |
| CN101833293B (en) | Precision control method and device for adding micro-liquid | |
| CN104132015B (en) | A kind of rolling mill hydraulic servovalve drift compensation method and device | |
| CN207396187U (en) | A kind of device of big load testing machine loading and measurement | |
| CN105242628A (en) | High-precision intelligent cabinet with self-detecting function | |
| CN105004947A (en) | Alternating current ring network state monitoring method and system | |
| CN106124924B (en) | The load method for normalizing of lissajous figures on-line checking deformation of transformer winding | |
| CN102915032A (en) | Method for detecting state of electronic control system and diagnosing faults | |
| CN205940515U (en) | Automatic nut detection device of automobile parts | |
| CN103838138A (en) | Triple-redundancy servo control card | |
| CN104535033B (en) | Accurately measure the method and system of different flow product resist thicknesses | |
| CN102968880A (en) | Information processor and processing method | |
| CN105033760A (en) | Pre-warning system of numerical control machine tool | |
| CN103105814A (en) | Binary system position positioning control device | |
| CN207249096U (en) | A kind of electric energy meter monitoring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 243003 Department of intellectual property right of Hunan West Road No. 8 technology center, Ma'anshan City, Anhui Province Applicant after: Ma'anshan Iron and Steel Co., Ltd. Address before: 243003 Hunan Anhui West Road, No. 8 technology center, Intellectual Property Department Applicant before: Ma'anshan Iron and Steel Co., Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 243003 8 Jiuhua Road, Yushan, Ma'anshan, Anhui Patentee after: Ma'anshan Iron and Steel Co., Ltd. Address before: 243003 intellectual property department, technology center, No. 8 Hunan West Road, Yushan, Ma'anshan, Anhui Patentee before: Ma'anshan Iron and Steel Co., Ltd. |