CN103047466B - Control method, control device and controller based on multi-ported valve actuator - Google Patents
Control method, control device and controller based on multi-ported valve actuator Download PDFInfo
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- CN103047466B CN103047466B CN201210584338.7A CN201210584338A CN103047466B CN 103047466 B CN103047466 B CN 103047466B CN 201210584338 A CN201210584338 A CN 201210584338A CN 103047466 B CN103047466 B CN 103047466B
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Abstract
An embodiment of the invention discloses a control method, a control device and a controller based on a multi-ported valve actuator. The method includes: receiving an instruction aiming at allowing a spool to move to a corresponding target valve position of a target address code; detecting an address code of the current valve position; comparing whether the difference between the target address code and the address code of the current valve position in a permissible error range or not; and if not, transmitting a control signal for moving a spool to a corresponding valve position of the target address code to control the actuator to drive the spool of the multi-ported valve to switch optionally among target valve positions. Accordingly, one optional passage of the multi-ported valve can be controlled to be communicated according to needs while the other passages are cut off.
Description
Technical field
The present invention relates to automatic control technology field, more particularly, relate to a kind of controlling method based on multiple-way valve final controlling element, device and controller.
Background technique
Final controlling element a kind ofly in automation equipment receives control information that controller sends and apply the mechanical device of control action to controll plant, drive output shaft straight line or the rotary motion of described final controlling element by performing described control information, and then drive the controll plant corresponding sports be connected with described output shaft.
Described controll plant can be spool, and existing controller is generally used for the Twoway valves controlling spool and carry out switching between two target valve position.
For the multi-pass ball valve for shunting action, hereinafter referred to as multiple-way valve, with the logical valve of eight shown in Fig. 1 a-Fig. 1 b exemplarily, described eight logical valves comprise 1 inflow entrance 101 and 8 outflow openings (comprising outflow opening 102 and outflow opening 103), accordingly, just there are 8 circulation passages, the spool of described eight logical valves has one " L-type " to hole, by rotary spool clockwise or counterclockwise within the scope of 360 °, change spool to the position in hole, the switching of described eight logical valve circulation passages can be controlled, illustrate, when spool is in position shown in Fig. 1 a, 101-102 passage flow, rest channels is cut off, be rotated in a clockwise direction by spool, reach position shown in Fig. 1 b, now 101-103 passage flow, rest channels are cut off.Corresponding, the spool of described eight logical valves just has 8 target valve position.
Above-mentioned control effects is reached to be controlled described eight logical valves by final controlling element, just require that described controller can send the control information controlling described final controlling element output shaft band movable valve plug any switching laws between 8 target valve position, but existingly can only control the controller that spool switches between two target valve position and obviously can not meet above-mentioned control overflow.
Summary of the invention
In view of this, the invention provides a kind of controlling method based on multiple-way valve final controlling element, device and controller, switch between multiple target valve position with the spool realizing described multiple-way valve.
For the purpose of quoting and know, the implication representated by the letter hereinafter used is summarized as follows:
M: the address code sum of encoder;
N: the valve position sum of multiple-way valve.
Based on a controlling method for multiple-way valve final controlling element, comprising:
Receive the instruction of the target valve position moving to destination address code correspondence for spool;
Detect the address code of current valve position;
Whether the difference of the address code of destination address code and current valve position described in comparison is in EE Error Excepted value;
When obtaining the comparison result of described difference outside described EE Error Excepted value, send the control signal that described spool moves to the corresponding valve position of destination address code.
Alternatively, also comprise address code be dispensed to corresponding valve position:
Within the scope of encoder address code, choose address code and be dispensed to corresponding valve position, the address code interval of adjacent valve position is equal, and described address code is spaced apart M, wherein, and M=m/n; Choose EE Error Excepted value, described EE Error Excepted value is at least less than the address code interval m/n of adjacent valve position;
Extract address code value in the address code respectively chosen and be less than the address code of 2M, be designated as address code to be updated;
Described address code to be updated is rewritten as described address to be updated code value and m value and.
Alternatively, after the address code detecting current valve position, also comprise:
Judge whether the address code of described current valve position is less than described M;
If the address code obtaining current valve position is less than the judged result of described M, then the address code of described current valve position is rewritten as the address code of described current valve position and m value and.
Based on a control gear for multiple-way valve final controlling element, comprising:
Instruction reception unit, for receiving the instruction of the target valve position moving to destination address code correspondence for spool;
Valve position detection unit, for detecting the address code of current valve position;
Whether comparing unit, for the difference of the address code of destination address code and current valve position described in comparison in EE Error Excepted value;
Control unit, for when obtaining the comparison result of described difference outside described EE Error Excepted value, sends the control signal that described spool moves to the corresponding valve position of destination address code.
Alternatively, also comprise: address code allocation units, specifically comprise:
Preliminary allocation units, for choosing address code and be dispensed to corresponding valve position within the scope of encoder address code, the address code interval of adjacent valve position is equal, described address code is spaced apart M, wherein, and M=m/n, described m is the address code sum of encoder, and described n is the valve position sum of multiple-way valve; Choose EE Error Excepted value, described EE Error Excepted value is at least less than the address code interval m/n of adjacent valve position;
Extraction unit, being less than the address code of 2M for extracting address code value in the address code respectively chosen, being designated as address code to be updated;
Destination address code rewrites unit, for described address code to be updated is rewritten as described address to be updated code value and m value with.
Alternatively, also comprise: current address code processing unit, specifically comprises:
Judging unit, for judging whether the address code of described current valve position is less than described M;
Current address code rewrites unit, for being less than the judged result of described M when the address code that obtain current valve position, the address code address code of described current valve position being rewritten as described current valve position and m value with.
Based on a controller for multiple-way valve final controlling element, comprising:
Processor and storage;
Described processor is for reading and performing the instruction stored in described storage;
Command unit in described storage comprises
Instruction reception unit, for receiving the instruction of the target valve position moving to destination address code correspondence for spool;
Valve position detection unit, for detecting the address code of current valve position;
Whether comparing unit, for the difference of the address code of destination address code and current valve position described in comparison in EE Error Excepted value;
Control unit, for when obtaining the comparison result of described difference outside described EE Error Excepted value, sends the control signal that described spool moves to the corresponding valve position of destination address code.
As can be seen from above-mentioned technological scheme, the embodiment of the present invention distributes address code one to one by each valve position for multiple-way valve, waiting receive move to the instruction of the target valve position of destination address code correspondence for spool after, whether the address code of current valve position that comparison obtains and described destination address code difference within the scope of EE Error Excepted; When described difference is not in described EE Error Excepted value, send the control signal that described spool moves to the corresponding valve position of destination address code, drive the spool of described multiple-way valve to switch between each target valve position to realize controlling described final controlling element, thus arbitrary circulation in many passages of described multiple-way valve, the cut-out of other passages can be controlled according to actual needs.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 a-Fig. 1 b is that the disclosed a kind of eight logical valves of prior art laterally dissect schematic diagram;
Fig. 2-Fig. 4 is a kind of controlling method flow chart based on multiple-way valve final controlling element disclosed in the embodiment of the present invention;
Fig. 5-Fig. 6 is a kind of control gear structural representation based on multiple-way valve final controlling element disclosed in the embodiment of the present invention;
Fig. 7-Fig. 8 is a kind of controller architecture schematic diagram based on multiple-way valve final controlling element disclosed in the embodiment of the present invention.
Embodiment
For the purpose of quoting and know, the implication representated by the subalphbet hereinafter used is summarized as follows:
M: the address code sum of encoder;
N: the valve position sum of multiple-way valve;
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technological scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment one:
The embodiment of the present invention one discloses a kind of controlling method based on multiple-way valve final controlling element, drives the spool of described multiple-way valve any switching laws between each valve position, see Fig. 2, comprising to realize described final controlling element:
Step 201: the instruction receiving the target valve position moving to destination address code correspondence for spool;
By the one-to-one relationship of pre-assigned address code and valve position, in described address code, determine destination address code, find target valve position corresponding with it according to the destination address code comprised in described instruction;
Step 202: the address code detecting current valve position;
The address code of described current valve position obtains by magnetic coder;
Step 203: whether the difference of the address code of destination address code and current valve position described in comparison is in EE Error Excepted value; If so, step 204 is entered, otherwise, return step 201;
Described comparison formula can be expressed as:
| target code value-present encoding value |≤EE Error Excepted value;
When the address code of described destination address code and current valve position meets above-mentioned comparison formula, the current valve position be namely considered as residing for spool is target valve position, and described valve position is without the need to switching; Otherwise, then need to switch to described target valve position;
Step 204: send the control signal that described spool moves to the corresponding valve position of destination address code;
By performing this control signal, controlling described spool and switching to target valve position by current valve position.
Embodiment two:
Based on embodiment one, the embodiment of the present invention two proposes another controlling method based on multiple-way valve final controlling element,
Identical working principle, see embodiment one respective figure and explanation, repeats no more;
Wherein, described address code is dispensed to the process of corresponding valve position, see Fig. 3, specifically comprises:
Step 301: choose address code and be dispensed to corresponding valve position within the scope of encoder address code, the address code interval of adjacent valve position is equal, wherein, remembers that destination address intersymbol corresponding to described adjacent target valve position is divided into M, described M=m/n; Choose EE Error Excepted value, described EE Error Excepted value is at least less than the destination address code interval M of adjacent target valve position; Described EE Error Excepted value is less, and control accuracy is higher.
Exemplarily illustrate with eight logical valves, described eight logical valves adopt resolution to be the encoder of 12, namely, the address code scope of described eight logical valves is 0 to 4095, the address code sum m of described encoder is 4096: the valve position sum n of described eight logical valves is 8, so, the destination address code interval M=m/n=4096/8=512 of described adjacent target valve position.
The destination address code that 8 target valve position of described eight logical valves are corresponding is as shown in the table,
Wherein, be that adjacent target valve position distributes numbering along clockwise direction, described target valve bit number is designated as successively: 1,2,3,4,5,6,7,8:
| Target valve bit number | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| 1st kind | 3587 | 3 | 515 | 1027 | 1539 | 2051 | 2563 | 3075 |
| 2nd kind | 1022 | 1534 | 2046 | 2558 | 3070 | 3582 | 4094 | 510 |
| 3rd kind | 2810 | 3322 | 3834 | 250 | 762 | 1274 | 1786 | 2298 |
Above three kinds of destination address codes are only any three kinds in destination address code plurality of distribution situation, do not limit to.
But, scope due to address code is 0-4095, if counting overflows, then address code adopts cycle count mode to count, that is, the actual count value of address code 4095 correspondence should be-1, and the actual count value of address code 4094 correspondence should be-2, the actual count value of address code 4093 correspondence should be-3 etc., the like; In above-mentioned formulae discovery process, the actual techniques value that address code should be used corresponding calculates, and if directly use address code to calculate, when each target code value does not meet
During the scope of 10≤target code value≤4085, may just there will be problem as described below in control procedure:
When the address code detecting the current valve position obtained is 4095, the destination address code received is 510, now, according to formula | target code value-present encoding value |≤EE Error Excepted value, the difference calculating known target code value and present encoding value is 3585, not in EE Error Excepted value, according to above-mentioned reasoning, the control signal that described spool moves to the corresponding valve position of destination address code should be sent;
But because address code adopts cycle count mode to count, when the actual count value of address code 4095 correspondence of the current valve position that detection obtains is-1, the actual count value of destination address code 510 correspondence of reception is 510; Or, when the actual count value of address code 4095 correspondence of the current valve position that detection obtains is 4095, the actual count value of destination address code 510 correspondence received is 4606, difference is 511, described difference, in EE Error Excepted value, is to send the control signal that described spool moves to the corresponding valve position of destination address code;
Thus, the described controlling method based on multiple-way valve final controlling element will be made to occur controlling mistake, so, as preferably, can the destination address code distributed for each target valve position in step 301 be handled as follows, to ensure the enforcement of controlling method.
Step 302: extract code value in the destination address code respectively chosen and be less than the address code of 2M, be designated as address code to be updated;
Step 303: described address code to be updated is rewritten as described address to be updated code value and m value and.
More than show the 2nd kind of shown situation exemplarily, described address code to be updated be numbered 8 target valve position corresponding 510 and be numbered 1 target valve position corresponding 1022, revised destination address code is followed successively by 4606 and 5118.
Further, after the address code detecting current valve position, see Fig. 4, also comprise:
Step 401: judge whether the address code of described current valve position is less than described M, if so, enters step 402;
Step 402: the address code of described current valve position is rewritten as the address code of described current valve position and m value and.
According to above-mentioned processing method, now,
When the address code detecting the current valve position obtained is 4095, the destination address code received is that 510(is after step 203 processes, described destination address code is rewritten as 4606) time, through judging, the address code 4095 of described current valve position is greater than M, i.e. 4095>512, the address code of current valve position need not be rewritten, according to formula | target code value-present encoding value |≤EE Error Excepted value, the difference calculating known target code value and present encoding value is 4606-4095=511, in EE Error Excepted value, now need not send the control signal that described spool moves to the corresponding valve position of destination address code.
Embodiment three:
See Fig. 5, the embodiment of the present invention three discloses a kind of control gear based on multiple-way valve final controlling element, comprising:
Command reception list 501, for receiving the instruction of the target valve position moving to destination address code correspondence for spool;
Valve position detection unit 502, for detecting the address code of current valve position;
Whether comparing unit 503, for the difference of the address code of destination address code and current valve position described in comparison in EE Error Excepted value;
Control unit 504, for when obtaining the comparison result of described difference outside described EE Error Excepted value, sends the control signal that described spool moves to the corresponding valve position of destination address code.
Embodiment four:
See Fig. 6, based on embodiment three, the embodiment of the present invention four discloses a kind of control gear based on multiple-way valve final controlling element, also comprises: address code allocation units and current address code processing unit;
Wherein, described address code allocation units specifically comprise:
Preliminary allocation units 601, for choosing address code and be dispensed to corresponding valve position within the scope of encoder address code, the address code interval of adjacent valve position is equal, and described address code is spaced apart M, wherein, M=m/n; Choose EE Error Excepted value, described EE Error Excepted value is at least less than the address code interval m/n of adjacent valve position;
Extraction unit 602, being less than the address code of 2M for extracting address code value in the address code respectively chosen, being designated as address code to be updated;
Destination address code rewrites unit 603, for described address code to be updated is rewritten as described address to be updated code value and m value with.
Described current address code processing unit, specifically comprises:
Judging unit 604, for judging whether the address code of described current valve position is less than described M;
Current address code rewrites unit 605, for being less than the judged result of described M when the address code that obtain current valve position, the address code address code of described current valve position being rewritten as described current valve position and m value with.
Embodiment five:
See Fig. 7, the embodiment of the present invention five discloses a kind of controller based on multiple-way valve final controlling element, comprising:
Processor 701 and storage 702;
Described processor 701 is for reading and performing the instruction stored in described storage 702;
Command unit in described storage 702 comprises
Instruction reception unit 703, for receiving the instruction of the target valve position moving to destination address code correspondence for spool;
Valve position detection unit 704, for detecting the address code of current valve position;
Whether comparing unit 705, for the difference of the address code of destination address code and current valve position described in comparison in EE Error Excepted value;
Control unit 706, for when obtaining the comparison result of described difference outside described EE Error Excepted value, sends the control signal that described spool moves to the corresponding valve position of destination address code.
Embodiment six:
See Fig. 8, based on embodiment five, the embodiment of the present invention six discloses another controller based on multiple-way valve final controlling element, and described storage 702 also comprises: address code allocation units and current address code processing unit,
Wherein, described address code allocation units specifically comprise:
Preliminary allocation units 801, for choosing address code and be dispensed to corresponding valve position within the scope of encoder address code, the address code interval of adjacent valve position is equal, described address code is spaced apart M, wherein, and M=m/n, described m is the address code sum of encoder, and described n is the valve position sum of multiple-way valve; Choose EE Error Excepted value, described EE Error Excepted value is at least less than the address code interval m/n of adjacent valve position;
Extraction unit 802, being less than the address code of 2M for extracting address code value in the address code respectively chosen, being designated as address code to be updated;
Destination address code rewrites unit 803, for described address code to be updated is rewritten as described address to be updated code value and m value with.
Described current address code processing unit, specifically comprises:
Judging unit 804, for judging whether the address code of described current valve position is less than described M;
Current address code rewrites unit 805, for being less than the judged result of described M when the address code that obtain current valve position, the address code address code of described current valve position being rewritten as described current valve position and m value with.
In sum, the embodiment of the present invention distributes address code one to one by each valve position for multiple-way valve, waiting receive move to the instruction of the target valve position of destination address code correspondence for spool after, whether the address code of current valve position that comparison obtains and described destination address code difference within the scope of EE Error Excepted; When described difference is not in described EE Error Excepted value, send the control signal that described spool moves to the corresponding valve position of destination address code, drive the spool of described multiple-way valve to switch between each target valve position to realize controlling described final controlling element, thus arbitrary circulation in many passages of described multiple-way valve, the cut-out of other passages can be controlled according to actual needs.
In this specification, embodiment adopts the mode of going forward one by one to describe, and what stress is all the difference with other embodiments, between each embodiment identical similar portion mutually see.For device disclosed in embodiment, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part illustrates see method part.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (6)
1. based on a controlling method for multiple-way valve final controlling element, it is characterized in that, comprising:
Receive the instruction of the target valve position moving to destination address code correspondence for spool;
Detect the address code of current valve position;
Whether the difference of the address code of destination address code and current valve position described in comparison is in EE Error Excepted value;
When obtaining the comparison result of described difference outside described EE Error Excepted value, send the control signal that described spool moves to the corresponding valve position of destination address code;
Also comprise: address code is dispensed to corresponding valve position, specifically comprises:
Within the scope of encoder address code, choose address code and be dispensed to corresponding valve position, the address code interval of adjacent valve position is equal, wherein, remember that destination address intersymbol corresponding to described adjacent target valve position is divided into M, described M=m/n, described m is the address code sum of encoder, and described n is the valve position sum of multiple-way valve; Choose EE Error Excepted value, described EE Error Excepted value is at least less than the address code interval m/n of adjacent valve position;
Extract code value in the destination address code respectively chosen and be less than the address code of 2M, be designated as address code to be updated;
Described address code to be updated is rewritten as described address to be updated code value and m value and.
2. the controlling method based on multiple-way valve final controlling element according to claim 1, is characterized in that, after the address code detecting current valve position, also comprises:
Judge whether the address code of described current valve position is less than described M;
If the address code obtaining current valve position is less than the judged result of described M, then the address code of described current valve position is rewritten as the address code of described current valve position and m value and.
3. based on a control gear for multiple-way valve final controlling element, it is characterized in that, comprising:
Instruction reception unit, for receiving the instruction of the target valve position moving to destination address code correspondence for spool;
Valve position detection unit, for detecting the address code of current valve position;
Whether comparing unit, for the difference of the address code of destination address code and current valve position described in comparison in EE Error Excepted value;
Control unit, for when obtaining the comparison result of described difference outside described EE Error Excepted value, sends the control signal that described spool moves to the corresponding valve position of destination address code;
Also comprise: address code allocation units, specifically comprise:
Preliminary allocation units, for choosing address code and be dispensed to corresponding valve position within the scope of encoder address code, the address code interval of adjacent valve position is equal, described address code is spaced apart M, wherein, and M=m/n, described m is the address code sum of encoder, and described n is the valve position sum of multiple-way valve; Choose EE Error Excepted value, described EE Error Excepted value is at least less than the address code interval m/n of adjacent valve position;
Extraction unit, being less than the address code of 2M for extracting address code value in the address code respectively chosen, being designated as address code to be updated;
Destination address code rewrites unit, for described address code to be updated is rewritten as described address to be updated code value and m value with.
4. the control gear based on multiple-way valve final controlling element according to claim 3, is characterized in that, comprising: current address code processing unit, specifically comprises:
Judging unit, for judging whether the address code of described current valve position is less than described M;
Current address code rewrites unit, for being less than the judged result of described M when the address code that obtain current valve position, the address code address code of described current valve position being rewritten as described current valve position and m value with.
5. based on a controller for multiple-way valve final controlling element, it is characterized in that, comprising:
Processor and storage;
Described processor is for reading and performing the instruction stored in described storage;
Command unit in described storage comprises
Instruction reception unit, for receiving the instruction of the target valve position moving to destination address code correspondence for spool;
Valve position detection unit, for detecting the address code of current valve position;
Whether comparing unit, for the difference of the address code of destination address code and current valve position described in comparison in EE Error Excepted value;
Control unit, for when obtaining the comparison result of described difference outside described EE Error Excepted value, sends the control signal that described spool moves to the corresponding valve position of destination address code;
Described storage also comprises: address code allocation units, specifically comprise:
Preliminary allocation units, for choosing address code and be dispensed to corresponding valve position within the scope of encoder address code, the address code interval of adjacent valve position is equal, described address code is spaced apart M, wherein, and M=m/n, described m is the address code sum of encoder, and described n is the valve position sum of multiple-way valve; Choose EE Error Excepted value, described EE Error Excepted value is at least less than the address code interval m/n of adjacent valve position;
Extraction unit, being less than the address code of 2M for extracting address code value in the address code respectively chosen, being designated as address code to be updated;
Destination address code rewrites unit, for described address code to be updated is rewritten as described address to be updated code value and m value with.
6. the controller based on multiple-way valve final controlling element according to claim 5, is characterized in that, described storage also comprises: current address code processing unit, specifically comprises:
Judging unit, for judging whether the address code of described current valve position is less than described M;
Current address code rewrites unit, for being less than the judged result of described M when the address code that obtain current valve position, the address code address code of described current valve position being rewritten as described current valve position and m value with.
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| CN201210584338.7A CN103047466B (en) | 2012-12-30 | 2012-12-30 | Control method, control device and controller based on multi-ported valve actuator |
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| CN201210584338.7A CN103047466B (en) | 2012-12-30 | 2012-12-30 | Control method, control device and controller based on multi-ported valve actuator |
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| CN101680573B (en) * | 2007-06-15 | 2012-05-30 | 费希尔控制产品国际有限公司 | Methods and apparatus to determine a position of a valve |
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| FR2807795B1 (en) * | 2000-04-18 | 2002-07-12 | Crouzet Automatismes | ACTUATOR CONTROL DEVICE |
| DE102007034059B4 (en) * | 2007-07-20 | 2012-12-06 | Siemens Ag | Actuator for an on / off valve |
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| CN101680573B (en) * | 2007-06-15 | 2012-05-30 | 费希尔控制产品国际有限公司 | Methods and apparatus to determine a position of a valve |
| CN102052509A (en) * | 2009-10-30 | 2011-05-11 | 西门子Vai金属科技有限公司 | Flow control valve |
| CN201788578U (en) * | 2010-06-23 | 2011-04-06 | 河北建筑工程学院 | Wireless remote control device of steel bar sleeve cold extrusion connection machine |
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