CN103353773B - A kind of adjusting method and system of converter valve water-cooling system cooling water temperature - Google Patents
A kind of adjusting method and system of converter valve water-cooling system cooling water temperature Download PDFInfo
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- CN103353773B CN103353773B CN201310301834.1A CN201310301834A CN103353773B CN 103353773 B CN103353773 B CN 103353773B CN 201310301834 A CN201310301834 A CN 201310301834A CN 103353773 B CN103353773 B CN 103353773B
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Abstract
A kind of adjusting method and system of converter valve water-cooling system cooling water temperature, including real-time adjuster, PID regulator and adder, real-time adjusting is combined with PID closed-loop controls cooling water temperature is adjusted, regulated value is exported using real-time regulative mode in real time by real-time adjuster according into valve temperature；It is expected into valve temperature that PID regulator setting is first passed through using PID close-loop control modes, then by comparator by reality into valve temperature compared with design temperature after input PID controller carry out computing, finally by operation result and real-time adjuster output regulated value taken by adder and afterwards control fan rotating speed.Solve lower water temperature of the prior art only carry out adjusted open loop and can not be by water temperature stability in set point, or only carry out PID closed-loop controls and can not but adjust the technical problem of the water temperature from set point farther out.Water temperature especially suitable for converter valve water-cooling system controls.
Description
Technical field
The present invention relates to the adjusting method of domain of control temperature, specifically converter valve water-cooling system cooling water temperature.
Background technology
Converter valve can operationally produce substantial amounts of heat and cool down, it is necessary to configure cooling system for it, to prevent the old of element
Change, ensure the normal operation of converter valve.Water-cooling system is exactly one of effective cooling method, by the cooling for adjusting water-cooling system
The temperature of water, to control the heat dissipation of converter valve.Existing cooling water temperature regulative mode is mainly using cooling water temperature and cooling
The regulative mode being directly linked is acted on, i.e., cooling water temperature is high strengthens cooling effect, and temperature is low, weakens cooling effect.Due to cold
But effect is in the same direction with coolant water temperature, and this regulative mode can accomplish the slowly varying of cooling water temperature, avoid converter valve from cooling down
Waterway connector suddenly cold and hot and the deformation leak produced.Cooling effect is all sent out during due to that can be higher than certain value with set water temperature
Wave, it is possible to effectively avoid water temperature overtemperature.
A kind of engine water temperature applied to electric automobile is disclosed in existing patent document CN102102580A and controls system
System, the system determine the stopping and startup of cooling fan, when coolant temperature is higher than certain by monitoring engine speed data
After value, the setting signal directly using temperature signal as rotating speed, i.e. temperature are high to improve rotating speed, the temperature sinking slow-speed of revolution, cooling work
With identical with coolant temperature action direction, so that by coolant temperature control within the specific limits.But program control is cold
But the dynamic characteristic of liquid temperature degree is there are problem, and temperature change is fast when be easy to causeing low temperature, and the temperature adjustment belongs to open loop tune
Section, coolant temperature cannot be run according to design temperature point, and with the change of environment temperature and speed, coolant temperature can occur
Change.
A kind of heating network lower water temperature control system is disclosed in existing patent document CN202734050U, which will
The pipe network coolant-temperature gage of collection carries out computing compared with design temperature, then via PID controller, adjusts motor-driven valve so that heating tube
Net is run on design temperature point, reduces temperature fluctuation.But there are not the feelings of great fluctuation process in view of water temperature in the program
Condition, if actual water temperature value is from set temperature value farther out, PID controller output maximum or minimum value, adjustment effect is very
It is limited, it is difficult to ensure that being run according to design temperature.And not only variation of ambient temperature scope is very big for converter valve cooling system, Er Qiehuan
The heating power of valve is flowed there is also large change, and such as the start and stop and the operation of high-power and small-power of converter valve, these situations are all
Control system is needed reasonably to be handled so that temperature is maintained on set point as far as possible, also as far as possible slow even if change.
The content of the invention
For this reason, the technical problems to be solved by the invention be lower water temperature of the prior art only carry out adjusted open loop and
Can not be by water temperature stability in set point, or only progress PID closed-loop controls can not but adjust the water temperature from design temperature point farther out
The problem of, thus propose it is a kind of can slow down water temperature change and by water temperature stability set point be used for converter valve water-cooling system it is cold
But the adjusting method of coolant-temperature gage.
In order to solve the above technical problems, the present invention provide a kind of adjusting method of converter valve water-cooling system cooling water temperature with
System.Real-time adjust is combined to cooling water by the adjusting method of converter valve water-cooling system cooling water temperature with PID closed-loop controls
Temperature is adjusted, and comprises the following steps：
（1）Regulated value is exported using real-time regulative mode in real time by real-time adjuster according into valve temperature；
（2）First passed through using PID close-loop control modes expected from PID regulator setting into valve temperature, then pass through and compare
Device by reality into valve temperature compared with design temperature after, by the fiducial value drawn input PID controller carry out computing, most
The regulated value of operation result and the output of real-time adjuster is taken by adder and controls the rotating speed of fan afterwards afterwards.
The regulative mode in real time is main regulative mode, and the PID close-loop control modes are auxiliary regulative mode.
It is described in real time regulative mode be：Start to start cooling fan, temperature when rising to default initial temperature into valve temperature
Rotation speed of the fan increase is raised, when temperature increases to predetermined limit temperature, adjuster output maximum, the i.e. full frequency of fan is run, cold
But effect reaches maximum.
Between the default initial temperature is 20-30 degrees Celsius, between the limiting temperature is 40-50 degrees Celsius.
The PID close-loop control modes are：To carrying out periodic samples, and periodicity averaged into valve temperature, so
Enter PID controller afterwards compared with into valve desired temperature afterwards and carry out computing, by output control in ± 20%.
The sampling period of the periodic samples is between 3-5 seconds, and the cycle of the averaged is the 25-35 seconds
Between, the cycle of the averaged is the integral multiple in the sampling period.
Amplitude limit is carried out by output of the clipping module to PID controller, by output control in ± 20%.
The regulating system of converter valve water-cooling system cooling water temperature includes：
Real-time adjuster：Regulated value is exported in real time according into valve temperature, change and the change into valve temperature of the regulated value
In the same direction；
PID regulator：Including comparator and PID controller, the output terminal of comparator and the input terminal of PID controller connect
Connect, the comparator periodically by reality into valve temperature compared with design temperature, then by the fiducial value drawn input PID control
Device processed carries out computing, and exports operation result；
Adder：It is connected with the output terminal of adjuster and PID regulator in real time, the adjusting that real-time adjuster is exported
The operation result of value and PID regulator output take and, the rotating speed of control fan afterwards.
The PID regulator further includes clipping module, is connected with the output terminal of PID controller, by the computing of PID controller
As a result by being exported after amplitude limit.
The above technical solution of the present invention has the following advantages over the prior art：
（1）The adjusting method of converter valve water-cooling system cooling water temperature of the present invention will be adjusted and PID closed loops in real time
Control, which is combined, is adjusted cooling water temperature, using real-time regulative mode by real-time adjuster according to real-time into valve temperature
Ground exports regulated value, and the change of the regulated value is in the same direction with the change into valve temperature；PID is first passed through using PID close-loop control modes
Adjuster setting is expected into valve temperature, then by comparator by reality into valve temperature compared with design temperature after,
The fiducial value drawn input PID controller is subjected to computing, finally leads to the regulated value that operation result is exported with real-time adjuster
Cross the rotating speed that adder takes and controls fan afterwards.So into valve temperature it is high when cooling effect strengthen, into valve temperature it is low when cool down
Declines, while the adjusting to design temperature point becomes sharp, and also technical staff can set according to the specific demand of system
Fixed suitable desired temperature, in the case of environment temperature, load variations, can both accomplish the slowly varying of cooling water temperature,
The deformation leak for avoiding converter valve cooling water channel connector suddenly cold and hot and producing, and can make progressively to be stabilized to setting temperature into valve temperature
Point is spent, even if change, change also very slowly, effectively improves the stability of system operation；
（2）The adjusting method of converter valve water-cooling system cooling water temperature of the present invention, it is default when being risen into valve temperature
Start to start cooling fan during initial temperature, temperature rise rotation speed of the fan increase, when temperature increases to predetermined limit temperature, is adjusted
Device exports maximum, i.e. the full frequency of fan is run, and cooling effect reaches maximum, so in the case where meeting design requirement, into valve
Temperature is not exceeded so as to fulfill cooling water temperature not over preset limit value；
（3）The adjusting method of converter valve water-cooling system cooling water temperature of the present invention, the default initial temperature are
Between 20-30 degrees Celsius, between the limiting temperature is 40-50 degrees Celsius, technical staff can be according to the specific demand of system
Suitable initial temperature and limiting temperature are set, has the function that effectively to control range of temperature；
（4）The adjusting method of converter valve water-cooling system cooling water temperature of the present invention, controls PID by clipping module
The output of device processed carries out amplitude limit, by output control in ± 20%, so that the adjustment effect of PID regulator is limited in certain model
In enclosing, play auxiliary adjustment, realize that cooling water temperature is run according to design temperature.
Brief description of the drawings
In order to make the content of the present invention more clearly understood, the specific embodiment below according to the present invention and combination
Attached drawing, the present invention is described in further detail, wherein
Fig. 1 is the structure diagram of the regulating system for the converter valve water-cooling system cooling water temperature that embodiment 1 provides；
Fig. 2 is the structure diagram of the regulating system for the converter valve water-cooling system cooling water temperature that embodiment 2 provides.
Embodiment
Embodiment 1
The present embodiment provides a kind of adjusting method of converter valve water-cooling system cooling water temperature, and real-time adjust is closed with PID
Ring control, which is combined, is adjusted cooling water temperature, comprises the following steps：
（1）Regulated value, and contrast are exported using real-time regulative mode in real time by real-time adjuster according into valve temperature
Real-time regulative mode disclosed in file CN102102580A is identical, when being raised into valve temperature, regulated value increase, and rotation speed of the fan
Increase, cooling effect are strengthened；Conversely, when into valve, when the temperature drops, regulated value reduces, rotation speed of the fan is reduced, and cooling effect weakens；
（2）It is expected into valve temperature t that PID regulator setting is first passed through using PID close-loop control modes0, in the present embodiment
In it is expected into valve temperature t0For 35 degrees Celsius, then by comparator will actually into valve temperature with it is expected into valve temperature t0Into
After row compares, the fiducial value drawn input PID controller is subjected to computing, PID controller is the comparison inputted according to system
Value carry out ratio, integrate, differentiate, operation result relation proportional to the fiducial value in the present embodiment, such as fruit
Border is more than expected into valve temperature t into valve temperature0, then operation result is on the occasion of conversely, ought actually be less than into valve temperature expected
Into valve temperature t0When, operation result is negative value, and the regulated value of operation result and the output of real-time adjuster finally is passed through adder
Take and afterwards, be converted into adjusting the rotating speed of the signal control fan of rotation speed of the fan.
As the embodiment that can be converted, it is described it is expected set into valve temperature according to the needs of cooling system, one
As be arranged on 35-40 or so.
The regulating system of the corresponding converter valve water-cooling system cooling water temperature of the present embodiment as shown in Figure 1, including：
Real-time adjuster：Regulated value is exported in real time according into valve temperature, change and the change into valve temperature of the regulated value
In the same direction；
PID regulator：Including comparator and PID controller, the output terminal of comparator and the input terminal of PID controller connect
Connect, the comparator periodically by reality into valve temperature compared with design temperature, then by the fiducial value drawn input PID control
Device processed carries out computing, and exports operation result；
Adder：It is connected with the output terminal of adjuster and PID regulator in real time, the adjusting that real-time adjuster is exported
Value and the operation result of PID regulator output take and control the rotating speed of fan afterwards.
Embodiment 2
The present embodiment provides a kind of adjusting method of converter valve water-cooling system cooling water temperature, and real-time adjust is closed with PID
Ring control, which is combined, is adjusted cooling water temperature, comprises the following steps：
（1）Regulated value is exported using real-time regulative mode in real time by real-time adjuster according into valve temperature, when into valve
Temperature rises to default initial temperature t1At=25 degrees Celsius, regulated value increases since 0, starts to start cooling fan, temperature at this time
Rotation speed of the fan increase is raised, when temperature rises to predetermined limit temperature t2At=45 degrees Celsius, adjuster output maximum, i.e. fan
Full frequency is run, and cooling effect reaches maximum；Conversely, into valve when the temperature drops, regulated value reduces, rotation speed of the fan is reduced, Zhi Daowen
When degree drops to 25 degrees Celsius, fan is closed；
（2）Use PID close-loop control modes first pass through PID regulator set it is expected into valve temperature as 38 degrees Celsius, and
Into the sampling in every 3 seconds of valve temperature once, ask for once averagely being worth within every 30 seconds the reality into valve temperature, then pass through comparator
By the reality into after compared with 38 degrees Celsius of valve temperature and design temperature, the fiducial value drawn is inputted into PID controller
Carry out computing, the operation result relation proportional to the fiducial value in the present embodiment, if it is actual into valve temperature be 40 Celsius
Degree, then operation result be on the occasion of, conversely, when reality into valve temperature be 36 degrees Celsius when, operation result is negative value, and passes through limit
Output of the width module to PID controller carries out amplitude limit, by output control in ± 20%, finally by the operation result after amplitude limit with
The regulated value of real-time adjuster output is taken by adder and afterwards, the signal for being converted into adjusting rotation speed of the fan controls turning for fan
Speed.
The maximum of the above-mentioned output of regulative mode in real time is 100%, for main regulative mode, the PID close-loop control modes
Output control is in ± 20%, to aid in regulative mode.
As the embodiment that other can be converted, the default initial temperature t1It can be arranged as required to, such as select
It is arranged to 20 DEG C, 28 DEG C or 30 DEG C；The predetermined limit temperature t2And can set as needed, as selection is arranged to
40 DEG C, 47 DEG C or 50 DEG C.Sampling period can also selected as 5s, cycle the selected as 25s or 35s of averaged.
The regulating system of the corresponding converter valve water-cooling system cooling water temperature of the present embodiment as shown in Fig. 2, including：
Real-time adjuster：Regulated value is exported in real time according into valve temperature, when rising to 25 degrees Celsius into valve temperature, regulated value
Increase since 0, temperature rise regulated value increase, when temperature rises to 45 degrees Celsius, adjuster output maximum；
PID regulator：Including comparator, PID controller and clipping module, the output terminal of comparator and PID controller
Input terminal connects, every 30 seconds of the comparator by reality into valve temperature compared with design temperature once, the comparison that then will be drawn
Value input PID controller carries out computing, and carries out amplitude limit by output of the clipping module to PID controller, and output control is existed
In ± 20%；
Adder：It is connected with the output terminal of adjuster and PID regulator in real time, the adjusting that real-time adjuster is exported
Value and the operation result of PID regulator output take and control the rotating speed of fan afterwards；
Clipping module：It is connected with the output terminal of PID controller, by the operation result of PID controller by defeated after amplitude limit
Go out.
Obviously, the above embodiments are merely examples for clarifying the description, and the restriction not to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (9)
1. a kind of adjusting method of converter valve water-cooling system cooling water temperature, it is characterised in that will adjust in real time and PID closed loop controls
System, which is combined, is adjusted cooling water temperature, comprises the following steps：
(1) regulated value is exported using real-time regulative mode in real time by real-time adjuster according into valve temperature；
(2) first passed through using PID close-loop control modes into valve temperature expected from PID regulator setting, then will by comparator
It is actual into valve temperature with design temperature compared with after, if it is actual into valve temperature be more than expected from into valve temperature, compare
Be worth on the occasion of, when reality into valve temperature be less than it is expected into valve temperature when, fiducial value is negative value, and the fiducial value drawn is inputted
PID controller carries out computing, and finally the regulated value that operation result is exported with real-time adjuster is taken by adder and is controlled afterwards
The rotating speed of fan processed.
2. the adjusting method of converter valve water-cooling system cooling water temperature according to claim 1, it is characterised in that the reality
When regulative mode be main regulative mode, the PID close-loop control modes are auxiliary regulative mode.
3. the adjusting method of converter valve water-cooling system cooling water temperature according to claim 1 or 2, it is characterised in that institute
Stating real-time regulative mode is：Start to start cooling fan when rising to default initial temperature into valve temperature, temperature rise fan turns
Speed increase, when temperature increases to predetermined limit temperature, adjuster output maximum, the i.e. full frequency of fan is run, and cooling effect reaches
It is maximum.
4. the adjusting method of converter valve water-cooling system cooling water temperature according to claim 3, it is characterised in that described pre-
Between if initial temperature is 20-30 degrees Celsius, between the limiting temperature is 40-50 degrees Celsius.
5. the adjusting method of converter valve water-cooling system cooling water temperature according to claim 1 or 2, it is characterised in that institute
Stating PID close-loop control modes is：To carrying out periodic samples into valve temperature, and periodicity averaged, then with into valve temperature
Degree setting value enters PID controller after being compared and carries out computing, by output control in ± 20%.
6. the adjusting method of converter valve water-cooling system cooling water temperature according to claim 5, it is characterised in that the week
The sampling period of phase property sampling is between 3-5 second, and cycle of the averaged is between 25-35 seconds, described to ask for being averaged
The cycle of value is the integral multiple in the sampling period.
7. the adjusting method of converter valve water-cooling system cooling water temperature according to claim 1 or 2, it is characterised in that logical
Cross output of the clipping module to PID controller and carry out amplitude limit, by output control in ± 20%.
A kind of 8. regulating system of converter valve water-cooling system cooling water temperature, it is characterised in that including：
Real-time adjuster：Regulated value is exported in real time according into valve temperature, and the change of the regulated value is in the same direction with the change into valve temperature；
PID regulator：Including comparator and PID controller, the output terminal of comparator and the input terminal of PID controller connect, institute
State comparator periodically by reality into valve temperature compared with design temperature, if it is actual be more than into valve temperature it is expected into valve temperature
Degree, then fiducial value be on the occasion of, when reality into valve temperature be less than it is expected into valve temperature when, fiducial value is negative value, then will be drawn
Fiducial value input PID controller carry out computing, and export operation result；
Adder：Be connected with the output terminal of adjuster and the PID regulator in real time, the regulated value that real-time adjuster is exported and
PID regulator output operation result take and, afterwards control fan rotating speed.
9. the regulating system of converter valve water-cooling system cooling water temperature according to claim 8, it is characterised in that described
PID regulator further includes clipping module, is connected with the output terminal of PID controller, and the operation result of PID controller is passed through amplitude limit
Export afterwards.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310301834.1A CN103353773B (en) | 2013-07-18 | 2013-07-18 | A kind of adjusting method and system of converter valve water-cooling system cooling water temperature |
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| CN201310301834.1A CN103353773B (en) | 2013-07-18 | 2013-07-18 | A kind of adjusting method and system of converter valve water-cooling system cooling water temperature |
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| CN103353773B true CN103353773B (en) | 2018-05-11 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107664058B (en) * | 2016-07-28 | 2020-09-04 | 长城汽车股份有限公司 | Engine cooling system control method and system and vehicle |
| CN112130452A (en) * | 2020-09-25 | 2020-12-25 | 江苏方天电力技术有限公司 | Control method for preventing rotor cooling water temperature of double-water internal cooling phase modifier from being excessively adjusted |
| CN112145469A (en) * | 2020-09-25 | 2020-12-29 | 江苏方天电力技术有限公司 | Phase modulator cooling air temperature control method |
| CN112731796A (en) * | 2020-09-25 | 2021-04-30 | 江苏方天电力技术有限公司 | Control method for inhibiting influence of start-stop cooling fan on cooling water temperature of stator of camera |
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