CN106640853A - Hydraulic-system-loaded intelligent control system - Google Patents
Hydraulic-system-loaded intelligent control system Download PDFInfo
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- CN106640853A CN106640853A CN201710126717.4A CN201710126717A CN106640853A CN 106640853 A CN106640853 A CN 106640853A CN 201710126717 A CN201710126717 A CN 201710126717A CN 106640853 A CN106640853 A CN 106640853A
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- current
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- overflow valve
- valve
- value
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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
- 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
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- 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)
- Harvesting Machines For Root Crops (AREA)
- Lifting Devices For Agricultural Implements (AREA)
Abstract
The invention discloses a hydraulic-system-loaded intelligent control system. All actuating valves in a hydraulic system are connected to a power source through a current information collection device. A control procedure comprises the following steps that 1, the coil driving current value X, generated in the working process, of each actuating valve is detected; 2, the hydraulic system is started; 3, a processor compares the current value X obtained at present with the mean current value X' in a storer; and 4, when the current value X equals to (0.8-1.2)*X', the processor judges whether an overflow valve is powered on or not, if the overflow valve is powered on, operation is returned to step 3 to implement step 3, and if the overflow valve is not powered on, the processor controls the overflow valve to be powered on and started. Due to the fact that the coil current values of all the actuating valves are detected through the current information collection device, the situation that each button of each actuating valve is connected to the overflow valve through a circuit is avoided, and thus a control circuit is simplified; wiring difficulty is avoided; and fault probability density and cost are lowered.
Description
Technical field
The present invention relates to hydraulic system field, and in particular to a kind of hydraulic system loads intelligence control system.
Background technology
Hydraulic system is widely used in the fields such as engineering machinery, manufacturing industry, and Automated condtrol is that hydraulic system is the most frequently used
Control form, especially currently with the continuous improvement of intelligent manufacturing technology, the Automated condtrol of hydraulic pressure is occupied more and more
Ratio.
The open system of hydraulic circuit be on startup or when need not export high pressure, overflow valve must not electricity, hydraulic oil passes through
Oil return filter for molten is passed straight back to hydraulic oil container, has both served the effect of protection hydraulic system, also provide significant conservation energy consumption.It is this
The problem that mode is brought is, when equipment needs pressure, overflow valve will be powered in time work, it is not necessary to during pressure overflow valve will and
When power-off so as to opening carry out overflow release.Common practice is that the electricity for arriving overflow valve all the way is connect on each control button
Road.When the workpieces such as hydraulic cylinder are more, the quantity equivalent of magnetic valve increases, and controls the switch blocks such as the button of magnetic valve
Accordingly to increase.Being connected to the circuit of overflow valve also will accordingly increase, and make circuit become extremely complex, also increase cost and cloth
Line difficulty, increases probability density of failure.In order to avoid such case, overflow valve after system starts is designed to sometimes and is located always
In closed mode, hydraulic work system causes hydraulic oil to be brought rapidly up in higher load condition, and energy consumption is also greatly increased.
The content of the invention
The present invention is in order to overcome the shortcomings of above technology, there is provided a kind of liquid for simplifying control circuit, reducing fault rate
Pressure system load intelligence control system.
The present invention overcomes the technical scheme that its technical problem is adopted to be：
A kind of hydraulic system loads intelligence control system, and each is performed valve and is connected by current information harvester in hydraulic system
In power supply, rate-determining steps are as follows：
A) coil drive current value when current information harvester works each execution valveDetected, times of collection
For n times, N is the natural number more than or equal to 2, and the current value of n times collection is converted to after data signal by processing by A/D converter
Device calculating current mean value, and willStore into memory；
B) hydraulic system is started；
C) current information harvester gathers coil drive current value when each execution valve works, processor will current electricity
Flow valuveWith current average in memoryCompare；
D) current value is worked asFor 0.8-1.2When, processor judges whether overflow valve is powered, if overflow valve is powered
Execution step c) is then returned, if overflow valve is not powered, processor control overflow valve is powered and opens.
In order to improve control accuracy, in being additionally included in step a), current information harvester is to each execution valve work
When current peakAnd the current peak durationDetected, times of collection is n times, N is the nature more than or equal to 2
Number, the current peak and current peak duration T of n times collection are converted to after data signal by processor by A/D converter
Calculating current peak average valueAnd current peak duration mean value, and willAndStore into memory；Step
C) current information harvester gathers current peak when each execution valve works inAnd the current peak duration, place
Device is managed by current flow peak valueAnd the current peak durationWith the current peak mean value in memoryAnd electric current
Duration of peak value's mean valueCompare；Work as current peak in step d)For 0.8-1.2, and current peak holds
The continuous timeFor 0.8-1.2When, processor judges whether overflow valve is powered, and returns if overflow valve is powered and performs
Step c), if overflow valve is not powered, processor control overflow valve is powered and opens.
The invention has the beneficial effects as follows：After the button that control performs valve is pressed, this hydraulic system load Based Intelligent Control system
Unite by the way that execution valve is determined to the judgement for performing valve coil driving current value whether in operating state, if being in operating state
Then processor judged the state of overflow valve again, allows overflow valve to be powered in time, so that hydraulic system offer work pressure
Power.Because current information harvester is detected to the coil current value of each execution valve, upper described each performs valve and is not required to
Again each button is connect into a circuit to overflow valve, so as to simplify control circuit, it is to avoid wiring difficulty, reduce therefore
Barrier probability density and cost.
Description of the drawings
Fig. 1 is the system flow chart of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings 1 the present invention will be further described.
A kind of hydraulic system loads intelligence control system, and each performs valve by current information harvester in hydraulic system
Power supply is connected to, rate-determining steps are as follows：A) coil drive current value when current information harvester works each execution valveDetected, times of collection is n times, N is the natural number more than or equal to 2, and the current value of n times collection is turned by A/D converter
It is changed to after data signal by processor calculating current mean value, and willStore into memory；B) hydraulic system is started；
C) current information harvester gathers coil drive current value when each execution valve works, processor is by present current valueWith current average in memoryCompare；D) current value is worked asFor 0.8-1.2When, processor judges to overflow
Whether stream valve is powered, and execution step c) is returned if overflow valve is powered, if overflow valve is not powered, processor control
Overflow valve is powered and opens.Realize after the button that control performs valve is pressed, this hydraulic system load intelligence control system passes through
The judgement for performing valve coil driving current value is determined and whether performs valve in operating state, processed if in operating state
Device judged the state of overflow valve again, allows overflow valve to be powered in time, so that hydraulic system provides operating pressure.Due to
Current information harvester detects that above-mentioned each performs valve need not again by each to the coil current value of each execution valve
Button all connects a circuit to overflow valve, so as to simplify control circuit, it is to avoid wiring difficulty, reduces probability density of failure
And cost.
Further, the current peak in being additionally included in step a), when current information harvester works each execution valve
ValueAnd the current peak durationDetected, times of collection is n times, N is the natural number more than or equal to 2, and n times are gathered
Current peak and current peak duration T be converted to after data signal by processor calculating current peak by A/D converter
Value mean valueAnd current peak duration mean value, and willAndStore into memory；Electric current letter in step c)
Breath harvester gathers current peak when each execution valve worksAnd the current peak duration, processor will be current
Current peakAnd the current peak durationWith the current peak mean value in memoryAnd current peak continue when
Between mean valueCompare；Work as current peak in step d)For 0.8-1.2, and the current peak durationFor
0.8-1.2When, processor judges whether overflow valve is powered, and execution step c) is returned if overflow valve is powered, if
Overflow valve is not powered, then processor control overflow valve is powered and opens.The current average in current value X and memoryThan
To on the basis of, current peak is further added byAnd the current peak durationWith the current peak mean value in memory
And current peak duration mean valueCompare, the judgement of action is more to performing valve can to make whole control system
Plus it is accurate, further increase the control accuracy that this hydraulic system loads intelligence control system.
Claims (2)
1. a kind of hydraulic system loads intelligence control system, it is characterised in that：Each is performed valve and is believed by electric current in hydraulic system
Breath harvester is connected to power supply, and rate-determining steps are as follows：
A) coil drive current value when current information harvester works each execution valveDetected, times of collection is
N times, N is the natural number more than or equal to 2, and the current value of n times collection is converted to after data signal by processor by A/D converter
Calculating current mean value, and willStore into memory；
B) hydraulic system is started；
C) current information harvester gathers coil drive current value when each execution valve works, processor is by current flow
ValueWith current average in memoryCompare；
D) current value is worked asFor 0.8-1.2When, processor judges whether overflow valve is powered, if overflow valve is powered
Execution step c) is then returned, if overflow valve is not powered, processor control overflow valve is powered and opens.
2. hydraulic system according to claim 1 loads intelligence control system, it is characterised in that：It is additionally included in step a)
In, current peak when current information harvester works each execution valveAnd the current peak durationExamined
Survey, times of collection is n times, N is the natural number more than or equal to 2, and the current peak and current peak duration T of n times collection is logical
Cross A/D converter to be converted to after data signal by processor calculating current peak average valueAnd the current peak duration is average
Value, and willAndStore into memory；Current information harvester gathers each and performs when valve works in step c)
Current peakAnd the current peak duration, processor is by current flow peak valueAnd the current peak duration
With the current peak mean value in memoryAnd current peak duration mean valueCompare；Work as electricity in step d)
Stream peak valueFor 0.8-1.2, and the current peak durationFor 0.8-1.2When, processor judges that overflow valve is
No energization, returns execution step c) if overflow valve is powered, if overflow valve is not powered, processor control overflow valve
It is powered and opens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710126717.4A CN106640853B (en) | 2017-03-06 | 2017-03-06 | A kind of hydraulic system loads intelligence control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710126717.4A CN106640853B (en) | 2017-03-06 | 2017-03-06 | A kind of hydraulic system loads intelligence control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106640853A true CN106640853A (en) | 2017-05-10 |
| CN106640853B CN106640853B (en) | 2018-01-16 |
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| CN201710126717.4A Active CN106640853B (en) | 2017-03-06 | 2017-03-06 | A kind of hydraulic system loads intelligence control system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4873817A (en) * | 1988-08-01 | 1989-10-17 | United Technologies Automotive, Inc. | Electrically controlled pressure relief valve system and method |
| CN1398735A (en) * | 2001-07-20 | 2003-02-26 | 胡斯可国际股份有限公司 | Double regeneration and suspension mode for cross-country vehicle |
| CN101332774A (en) * | 2008-08-06 | 2008-12-31 | 山东理工大学 | Automobile brake energy regeneration control device and system |
| CN103827509A (en) * | 2011-11-07 | 2014-05-28 | 住友重机械工业株式会社 | Closed hydraulic circuit system |
| CN105107875A (en) * | 2015-09-17 | 2015-12-02 | 太原科技大学 | Dual-pressure closed-loop control method for full-hydraulic straightener |
-
2017
- 2017-03-06 CN CN201710126717.4A patent/CN106640853B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4873817A (en) * | 1988-08-01 | 1989-10-17 | United Technologies Automotive, Inc. | Electrically controlled pressure relief valve system and method |
| CN1398735A (en) * | 2001-07-20 | 2003-02-26 | 胡斯可国际股份有限公司 | Double regeneration and suspension mode for cross-country vehicle |
| CN101332774A (en) * | 2008-08-06 | 2008-12-31 | 山东理工大学 | Automobile brake energy regeneration control device and system |
| CN103827509A (en) * | 2011-11-07 | 2014-05-28 | 住友重机械工业株式会社 | Closed hydraulic circuit system |
| CN105107875A (en) * | 2015-09-17 | 2015-12-02 | 太原科技大学 | Dual-pressure closed-loop control method for full-hydraulic straightener |
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| Publication number | Publication date |
|---|---|
| CN106640853B (en) | 2018-01-16 |
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