CN107533336A - Control valve device and valve control method - Google Patents
Control valve device and valve control method Download PDFInfo
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- CN107533336A CN107533336A CN201680023728.3A CN201680023728A CN107533336A CN 107533336 A CN107533336 A CN 107533336A CN 201680023728 A CN201680023728 A CN 201680023728A CN 107533336 A CN107533336 A CN 107533336A
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- China
- Prior art keywords
- aperture
- valve
- deviation
- symbol
- control
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
- G05D7/06—Control of flow characterised by the use of electric means
- G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
- G05D7/0629—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
- G05D7/0635—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on throttling means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
- F16K37/0041—Electrical or magnetic means for measuring valve parameters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
- F16K37/005—Electrical or magnetic means for measuring fluid parameters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Flow Control (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Magnetically Actuated Valves (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
It is an object of the invention to provide a kind of control valve device and valve control method, the controlling of fluid temperature (F.T.) will not be undermined and can be reduced caused by the return of valve from the deviation of blind area.Control valve device includes：The actual aperture of acquisition unit (101), the target aperture for obtaining the target location for representing valve and the current location for representing the valve；Calculating part (102), calculate the aperture deviation of the target aperture and the actual aperture；Determination unit (103), judge the symbol of the aperture deviation；And output section (104), when the target aperture is changed and repeats the acquisition of each aperture, the calculating of the aperture deviation and the judgement of the symbol, exported using the aperture deviation calculated as driving the control deviation of the valve to the drive division for driving the valve, untill the symbol vanishing or opposite symbol.
Description
Technical field
The present invention relates to a kind of valve for carrying out coolant control valve (Coolant Control Valve, CCV) drive control
Control device and valve control method, the CCV drive controls be to the valve for being adjusted to fluids such as gas, liquid,
The revolving valve being adjusted in particular for the coolant water temperature of the water jacket (water jacket) of the internal combustion engine to automobile etc.
(rotary valve) is controlled.
Background technology
In the past, the mode cooled down as the internal combustion engine to automobile etc., has been widely implemented following methods：In internal combustion engine
Water jacket is set around combustion chamber, cooling water is supplied from radiator (radiator) to the water jacket and makes its circulation, thus, is carried out
Combustion chamber and the heat exchange of cooling water.Moreover, it is contemplated that to the viewpoint for improving automobile burnup, preferably according to the loading level of internal combustion engine
To adjust the temperature of the cooling water, as the method for carrying out the regulation, it is known to CCV drive controls, i.e.,：In water jacket with dissipating
Revolving valve (hereinafter referred to as valve) is set between hot device, made by direct current (Direct Current, DC) motor (motor) described
Valve suitably rotates, and is adjusted with the flow to the cooling water from radiator.
In general, in CCV drive controls, valve is to be configured to, via the DC motors, worm screw (worm) and other teeth
Take turns (gear) and be driven.It is desirable that the DC motors act all the time, suitably to carry out temperature control to cooling water,
But the problem of DC motors can produce heating in such cases be present.In order to suppress the heating, it is known to following methods, i.e. logical
Cross possess relative to target temperature it is a certain degree of allow, so as to extend the method for the action dwell time of DC motors, specifically
For, over reach dwell time, i.e. blind area is set to target temperature, to improve the frequency stopped.
However, in general CCV drive controls, blind area is set by the target aperture of the target location to representing valve,
So as to set blind area to target temperature.That is, in CCV drive controls, calculated according to the blind area for having sluggish (hystersis) come computing
Go out the control deviation for driving valve, if for example, target aperture and represent current valve position actual aperture deviation it is absolute
It is worth below threshold value A, to be then judged as that substantial actual aperture is located in blind area, and control deviation is set to 0.As long as moreover, with
The absolute value of deviation afterwards is not up to the threshold value B more than higher than the threshold value A, is just 0 by control deviation control.By such a
Control, suitably to extend the action dwell time of DC motors.
As the technology related to the control, it is known to following technologies：According to the outflow side based on cooling water and inflow
Temperature difference in the respective cooling water channel in side PID (Proportional Integral Differential,
PID) (or proportional integration (Proportional Integral, PI)) controlled quentity controlled variable, to calculate intended heat device flow (target Rd
Flow), and implement to correct and fed back (feedback) control etc., to stabilize to the target Rd flows, so that more to accord with
Real required state is closed to control (control) with making valve linear (linear), so that cooling water turns into required temperature,
Thus, the problem of eliminating operating lag (patent document 1).
[prior art literature]
[patent document]
Patent document 1：No. 3932227 publications of Japanese Patent No.
The content of the invention
[inventing problem to be solved]
But the sealing (seal) for valve, typically using ethylene propylene diene rubber (Ethylene Propylene Diene
Monomer, EPDM) etc. flexible power encapsulant, when DC motors in blind area stop, sometimes because of containment member
Detorsion caused by elastic force, cause valve from stop position towards return direction (for example, when valve marches forward towards evolution, for the side of closing
To) return.The key of CCV drive controls is the control of small aperture, but causes valve from the return of stop position in therefore kind
In the case that the blind area comprising threshold value B is deviateed in position, it is necessary to drive DC motors again, therefore following problems be present：Not only waste
Unnecessary electric power, and as the worsening reason of DC motors.On the other hand, if excessively increasing the blind area, although driving again
The problem of frequency of DC motors is reduced, but the controlling that cooling water temperature be present is deteriorated.
The present invention is completed to solve described problem, and its object is to provide a kind of control valve device and valve control
Method, will not undermine the controlling of fluid temperature (F.T.), and can reduce the deviation caused by the return of valve, from blind area.
[technological means for solving problem]
In order to solve described problem, one embodiment of the present invention includes：Aperture acquisition unit, obtain the target position for representing valve
The target aperture and the actual aperture of the current location of the expression valve put；Deviation calculating part, calculate the target aperture with
The aperture deviation of the actual aperture；Sign determination portion, judge the symbol of the aperture deviation；And deviation output section, whenever
The target aperture is changed and repeats acquisition, the calculating of the aperture deviation and the judgement of the symbol of each aperture
When, exported using the aperture deviation calculated as driving the control deviation of the valve to the drive division for driving the valve,
Untill the symbol vanishing or opposite symbol.
Moreover, one embodiment of the present invention is：Obtain the target aperture for the target location for representing valve and represent the valve
Current location actual aperture, calculate the aperture deviation of the target aperture and the actual aperture, judge the deviation
Symbol, repeat the acquisition of each aperture, the calculating of the aperture deviation and described whenever the target aperture is changed
During the judgement of symbol, exported using the aperture deviation calculated as driving the control deviation of the valve to driving the valve
Drive division, untill the symbol vanishing or opposite symbol.
[The effect of invention]
According to the present invention, the controlling of fluid temperature (F.T.) will not be undermined and can be reduced caused by the return of valve from blind area
Deviate.In addition, for other effects of the present invention, also illustrated in following embodiment one.
Brief description of the drawings
Fig. 1 is the schematic diagram for the engine-cooling system for representing present embodiment.
Fig. 2 is the block diagram for the hardware configuration for representing ECU.
Fig. 3 is the functional block diagram for the functional structure for representing ECU.
Fig. 4 is the flow chart for the valve control process for representing present embodiment.
Fig. 5 is the flow chart for representing state detection processing.
Fig. 6 is the flow chart for representing transition state processing.
Fig. 7 is the flow chart for representing valve open treated.
Fig. 8 is the flow chart for representing valve blocking processing.
Fig. 9 is the flow chart for representing nought state processing.
Figure 10 is the flow chart for representing steady state processing.
Embodiment
Hereinafter, embodiments of the present invention are explained with reference to.In addition, in present embodiment, the present invention is applicable
Illustrated in case of the control device of control valve, the valve is used by cooling water and carrys out internal combustion to automobile etc.
The engine-cooling system that machine (hereinafter referred to as engine) is cooled down.In addition, be not limited to this, as long as come pair using valve
The system that the flow of liquid or gas is electronically controlled, can be applicable the present invention.
First, the engine-cooling system of present embodiment is illustrated.Fig. 1 is the engine for representing present embodiment
The schematic diagram of cooling system.As shown in figure 1, the engine-cooling system 1 of present embodiment is be arranged on the vehicles such as automobile interior
Combustion engine is the periphery of engine 11, performs the CCV drive controls including valve control process described later is incorporated into.Specifically, it is described
Engine-cooling system 1 mainly possesses water jacket 12, water pump (water pump) 13, cooling water valve device 21, cooling-water temperature sensor
(sensor) 22a, cooling-water temperature sensor 22b, control unit of engine (Engine Controt Unit, ECU) 31, radiator 41,
Heater (heater) 42, choke valve (throttle) 43, main (main) flow channel tube (pipe) 91a, primary flow path pipe 91b, pair
(sub) flow channel tube 92, bypass (bypass) flow channel tube 93.
Water jacket 12 is located at around engine 11, and engine 11 is cooled down by its internal cooling water.Institute
State and water pump 13 is provided with water jacket 12, by the water pump 13, cooling water is flowed into and flowed out inside it.Flowed out from water jacket 12 cold
But water again flows into water pump 13 via bypass flow path pipe 93, and flows into primary flow path pipe 91a and/or secondary flow channel tube 92.Main flow
Road pipe 91a is cooling water is flowed into the radiator 41 for being cooled down to cooling water, and secondary flow channel tube 92 is to flow into cooling water
For the heater 42 to being heated in compartment and the choke valve for being controlled to influx of the air inlet towards engine 11
43.The cooling water of radiator 41, heater 42 and choke valve 43 is flowed into respectively by primary flow path pipe 91b via each pipe
And again flow into water pump 13.
Cooling water valve device 21 has：The helicoid valve 211 rotated freely, for adjusting the stream of cooling in its stream
Amount；As the DC motors 212 of actuator (actuator), for driving the valve 211 to rotate；And position sensor
(position sensor) 213, detect the position of the circumferential direction of valve 211.Cooling water valve device 21 is the aperture by valve 211
Inflow of the cooling water towards primary flow path pipe 91a and secondary flow channel tube 92 to be adjusted, by the regulation, the temperature of cooling water is realized
Degree control, and then realize the temperature control of engine 11.Moreover, the circumferential direction of valve 211 is detected by position sensor 213
Position, thus detect aperture of the valve 211 relative to primary flow path pipe 91a, primary flow path pipe 91b and secondary flow channel tube 92.Moreover, respectively
Cooling-water temperature sensor 22a, cooling-water temperature sensor 22b in cooling water valve device 21, radiator 41 are located to the cooling water at each position
Temperature is detected.
ECU 31 is the microcontroller (micro that pair various actions related to engine 11 are controlled
Controller), in present embodiment, as appropriate from position sensor 213, cooling-water temperature sensor 22a, cooling-water temperature sensor 22b
Ground obtains data, and the valve control being controlled based on acquired data come the action to DC motors 212, will enter below
Row explanation.
By each structure of engine-cooling system 1 described above, cooling water circulates via primary flow path pipe 91a, by
This, flows into water jacket 12 after the cooling of radiator 41, in the case of via bypass flow path pipe 93, is again flowed into without cooling
In water jacket 12.Therefore, engine-cooling system 1 is by the aperture of regulating valve 211, so as to switch the circulation road of such a cooling water
Footpath, moreover, being controlled to cooling water towards primary flow path pipe 91a influx, thus, it is possible to which cooling is water-cooled into required temperature
Degree, thus allows for the temperature control of cooling water, and then can carry out the temperature control of engine 11.
Next, ECU hardware configuration is illustrated.Fig. 2 is the block diagram for the hardware configuration for representing ECU.
As shown in Fig. 2 ECU 31 possesses central processing unit (Central Processing Unit, CPU) 311, memory
(memory) 312, input/output interface (interface) 313.ECU 31 is to make CPU 311, memory 312, input/output
Interface 313 synergistically carries out the processing related to the control of valve 211.Specifically, obtained via input/output interface 313
As the information detected by the various sensors such as position sensor 213 and cooling-water temperature sensor 22a, cooling-water temperature sensor 22b.As institute
The information of acquisition, can enumerate the rotating speed of engine 11, manifold (manifold) pressure, the coolant water temperature of radiator 41, from upper
The target water temperature of the water jacket 12 as target of device requirement and actual water temperature etc..
ECU 31 is based on these acquisition results, to calculate the requirement cooling water for reaching required target water temperature
Amount, and target aperture is calculated, the target aperture represents the position as target for reaching the valve 211 for requiring cooling water inflow
(aperture).In addition, the calculating of the target aperture is carried out by general method, therefore it is omitted in the present embodiment
In detail.In order to which control valve 211 is to reach the target aperture, by valve control process described later, the behaviour of DC motors 212 is calculated
Measure, and via input/output interface 313 and by signal output corresponding with the operational ton of DC motors 212 to drive circuit 23.
The drive circuit 23 is the PWM that pulsewidth modulation (Pulse Width Modulation, PWM) control is carried out to DC motors 212
Circuit, the dutycycle of pulsewidth is changed according to the size of the signal inputted to drive DC motors 212.
In addition, in present embodiment, for valve 211 movable area with 190 °, it is related for the driving to DC motors 212
Resolution ratio be controlled by 240, for the aperture of valve 211 in units of 0.344 degree.And it is set to：Make control deviation
It is positive it is increased in the case of, valve 211 is towards evolution to being controlled.Valve 211 conducted in valve control process described herein as
It is to sample (sampling) cycle with defined to carry out to rotate control, is in the present embodiment set to the sampling period
64msec cycle.
If the summary of the described valve control process of simple declaration, what the valve control process of present embodiment was discussed further below
Processing, i.e.,：Untill valve 211 is turned to target aperture rotation control in, to it is being calculated in current sample, as
Make the symbol progress of the aperture deviation for the basic of control deviation (operational ton), target aperture and actual aperture that valve 211 drives
Judge, and rotate valve 211, so that the actual aperture that the symbol is changed into 0 (zero) i.e. current sample reaches target aperture, or
Make the actual aperture of the i.e. current sample of the sign-inverted more than untill target aperture.Such a valve control process is by ECU 31
Possessed each function and realize.
Next, ECU 31 functional structure is illustrated.Fig. 3 is the functional block diagram for the functional structure for representing ECU.Such as
Shown in Fig. 3, ECU 31 possesses acquisition unit 101, calculating part 102, determination unit 103, output section 104 are used as function.In addition, these work(
Can cooperate to realize by the CPU 311 and the grade hardware resource of memory 312.
Acquisition unit 101 obtains the various information related to valve control process, such as obtains and calculate or set in upper step
The target aperture of fixed current sample, or the actual aperture of the valve 211 of the current sample detected by position sensor 23.Meter
Calculation portion 102 is based on as actual aperture and the target aperture acquired in acquisition unit 101, to carry out the calculating of aperture deviation.
Determination unit 103 carries out the various judgements related to valve control process.As various judgements, can enumerate：Aperture is inclined
Whether whether the absolute value of difference is to be formed below aftermentioned blind area A threshold value A, or be more than the threshold value B to form aftermentioned blind area B
Judge；The sign determination of aperture deviation；And after whether the state of current valve 211 meets for driving or stopping valve 211
State judgement of regulation control condition etc..In present embodiment, threshold value A and B are stored in read-only storage (Read (not shown)
Only Memory, ROM) etc. in non-volatile memory medium.Output section 104 is according to the determination processing of determination unit 103, will be used
0 is set in the control deviation of driving valve 211, or aperture deviation is set to control deviation and exported to drive circuit 23.
Next explanation is by the detailed of the valve control process carried out of ECU 31.Fig. 4 is the valve control for representing present embodiment
The flow chart of processing.In addition, the valve control process in present embodiment is using the setting of target aperture as triggering (trigger)
To perform, for each sample output control deviation.Moreover, valve control process is in ignition key switch (not shown)
(ignition key switch) will be continued executing with after closing (so-called flame-out (Key Off)), until by learning time and
Untill valve 211 is fully closed.
First, as shown in figure 4, handling it in the state detection that execution is detected to the state of the valve 211 of current sample
(S1) afterwards, whether the symbol for the aperture deviation that determination unit 103 judges to export in state detection processing is beyond 0 (zero), changes speech
It, whether decision symbol is not positive or negative (S2).If symbol is beyond 0 (S2, being (YES)), then the state according to valve 211 is performed
Control deviation is set to the value of 0 or aperture deviation and the transition state that exports handles (S3), if beyond 0, i.e., symbol is not
Symbol is 0 (S2, no (NO)), then performs and control deviation is set to 0 and exported so that valve 211 to be set to the steady state of steady state
Handle (S4).The processing of these transition states and steady state processing are suitably switched according to the state of valve 211, and continue to hold
Row is untill flame-out.Hereinafter, state detection processing, transition state processing, steady state processing are described in detail.
First, to state detection processing spec, its is detailed.Fig. 5 is the flow chart for representing state detection processing.Such as Fig. 5 institutes
Show, in state detection processing, first, acquisition unit 101 obtains the target aperture and actual aperture (S101) of current sample.Obtain
Afterwards, determination unit 103 judges whether acquired target aperture has been changed (S102).The judgement for example both can be according to current sample
Whether difference judges for the value of product and the sample before current sample, and also target aperture can be received in the acquisition of target aperture deposits
Judge in the notice (being obtained in advance by ECU 31) of change.
If target aperture has change (S102, yes), then determination unit 103 exports refC=1 to be used as result of determination
(S103), calculating part 102 calculates the deviation of acquired target aperture and actual aperture, and inclined using result of calculation as aperture
Difference and export, and export the symbol (S104) of the aperture deviation.For example, if target aperture is the value lower than actual aperture,
That is, represent make valve 211 towards close direction rotation aperture, then symbol for-(negative), if target aperture is the value higher than actual aperture,
That is, represent to make aperture of the valve 211 towards evolution to rotation, then symbol is+(just).In present embodiment, if symbol is just, export
ESig=1, if symbol is negative, eSig=-1 is exported, if symbol is zero, export eSig=0.Preferably, herein defeated
The value for going out result and later output result is can suitably to read ground, is stored in the storage region of the grade of memory 312.In addition,
In the case of target aperture must be changed in the startup of engine 11 etc., it can also save step S102 determination processing and export
RefC=1, so as to omit step S102 determination processing.On the other hand, if target aperture is then sentenced without change (S102, no)
Determine portion 103 and export refC=0 using as result of determination (S105), and be transferred to step S104 calculating processing.
After aperture deviation is exported, determination unit 103 judges whether the absolute value of aperture deviation is (S106) below threshold value A.
The threshold value A of present embodiment is the value for being used to be formed the blind area A comprising target aperture ± A.The blind area A is to turn into following benchmark
Scope, i.e.,：Towards in the state of target aperture control valve 211, if actual aperture is in the range of the blind area A, i.e.
If the absolute value of aperture deviation is in below threshold value A, it is judged as that required temperature control can be realized.If aperture deviation is threshold
Below value A (S106, yes), then determination unit 103 be judged as that actual aperture is in the A of blind area, output inRange=1 (S107), this
Flow terminates.On the other hand, if aperture deviation is not (S106, no) below threshold value A, then determination unit 103 exports inRange=0
(S108)。
After exporting inRange=0, determination unit 103 judges whether the absolute value of aperture deviation is more than threshold value B (S109).
The threshold value B of present embodiment is the value higher than threshold value A, is the value for being used to be formed the blind area B comprising target aperture ± B.It is described blind
Area B is the scope as following benchmark, i.e.,：Towards in the state of target aperture control valve 211, if actual aperture is in described
In the range of the B of blind area, i.e. if the absolute value of aperture deviation is higher than threshold value A and is below threshold value B, be judged as that institute can not be realized
The temperature control needed, it is necessary to make valve 211 drive untill target aperture.On the other hand, blind area B turns into following benchmark, i.e. one
It is secondary judge actual aperture be in blind area A it is interior and in the state of stopping the driving of valve 211, if because the rotation of 211 non-original idea of valve causes
Actual aperture deviates blind area B, then makes valve 211 again towards target aperture to drive again.In other words, once judging actually to open
In the state of degree stops the rotation of valve 211 in the A of blind area, if causing actual aperture inclined because of the rotation of 211 non-original idea of valve
From blind area A but still in the B of blind area, then without the driving again of valve 211.
If aperture deviation is more than threshold value B (S109, yes), then determination unit 103 is judged as that actual aperture is not at blind area B
Interior, output outRange=1 (S110), this flow terminates.On the other hand, if it is more than aperture deviation and non-threshold B (S109,
It is no), then determination unit 103 is judged as that actual aperture is in the B of blind area but is not in the A of blind area, exports outRange=0
(S111), this flow terminates.
By more than state detection handle, ECU 31 can identify target aperture whether there is change, aperture deviation value, open
Spend symbol, 211 position of valve of deviation (whether actual aperture is interior etc. in blind area A, B).
Next, for being handled based on these information come the transition state performed, illustrate that its is detailed.Fig. 6 is to represent
The flow chart of control deviation output processing.As shown in fig. 6, in transition state processing, first, determination unit 103 judges to represent
The eSig of the symbol exported in the state detection processing of current sample is 1, -1, which of 0 (S201).Herein, if eSig
=1 (S201,1), then valve open treated (S202) is performed, if eSig=-1 (S201, -1), then perform valve blocking processing
(S203), if eSig=0 (S201,0), then nought state processing (S204) described later is performed.Hereinafter, illustrate that these valves open successively
Processing, valve blocking processing, nought state processing it is detailed.
First, reference picture 7 illustrates to valve open treated.Fig. 7 is the flow chart for representing valve open treated.As herein
It is shown, in valve open treated, due to symbol eSig=1, it can thus be assumed that being that actual opening ratio target aperture is low, valve 211 does not reach
To the state of target aperture, therefore, first, the aperture that output section 104 will calculate in the processing of the state detection in current sample
Deviation is set to control deviation (S301), and outputs this to drive circuit 23 (S302).Receive the drive circuit 23 of control deviation
DC motors 212 are driven based on the control deviation, so that valve 211 is towards evolution to rotation.It is standby after control deviation output
Untill current sample is terminated, i.e. standby untill 64msec is passed through at the beginning of from current sample (S303).Herein, this reality
Apply in mode, sample is shifted into the moment, i.e. at the beginning of being set to sample at the time of state detection processing will be performed.In addition, not
Be defined in this, for example, also can by obtain state detection result at the time of etc. be set to sample start time.After standby processing, turn
Next sample is moved to, and performs the state detection processing (S304) same with the step S1, then, determination unit 103 again
Judge whether the result of the state detection processing of current sample meets defined 1st control condition (S305).
The 1st control condition in present embodiment is：RefC=0 and eSig=0；Or refC=0 and inRange=1,
And eSig=-1.In other words, the 1st control condition is：Symbol shown in the result of determination of symbol is changed into symbol during original sample
Result of determination, or the symbol opposite with the result of determination of symbol during sample before, or be 0, and aperture deviation is absolute
It is worth for below threshold value A, target aperture is without change.That is, the 1st control condition of so-called satisfaction, is to represent to have reached as actual aperture
Target aperture, or more than the state of the target aperture in the range of the A of blind area.
Therefore, if it is determined that to meet the 1st control condition (S305, yes), the then constant shape for the step S4 being transferred to shown in Fig. 4
State processing.On the other hand, if it is determined that to be unsatisfactory for the 1st control condition (S305, no), then determination unit 103 judges current sample
Whether the result of state detection processing meets defined 2nd control condition (S306).
The 2nd control condition in present embodiment is eSig=-1 or refC=1.That is, if being unsatisfactory for the 1st control condition
Meet the 2nd control condition, then suspect for target aperture is changed and re-starts the situation of processing again, or valve 211 excessively turns
Situation that is dynamic and exceeding blind area A.On the other hand, any control condition is unsatisfactory for, and suspects it is the still miss the mark aperture of valve 211
Situation.Therefore, if it is determined that to meet the 2nd control condition (S306, yes), then the transition shape for the step S3 being transferred to shown in Fig. 4
State processing, if it is determined that to be unsatisfactory for the 2nd control condition (S306, no), then performs and is set to step S301 aperture deviation again
The processing of control deviation.
As described above, by judged based on the 1st control condition, the aperture of the 2nd control condition, as long as thus actually opening
Degree is in the range of the A of blind area but does not reach target aperture yet, just can make valve 211 towards evolution to being rotated further.Thus, even if producing
The return of valve 211, it can also improve the side of closing for not reaching target aperture that valve 211 is rested in the one side in the A of blind area, i.e. blind area A
To the possibility in the range of side, so as to reduce the deviation out of blind area A and B.
Next, reference picture 8 illustrates to handle valve blocking.Fig. 8 is the flow chart for representing valve blocking processing.Valve closes
In lock processing, due to symbol eSig=-1 when it is shifted, it can thus be assumed that with valve open treated again it is valve 211 is not up to mesh
Mark the state of aperture, though therefore be the processing for rotating valve 211, its rotation direction and valve open treated phase are the side of closing on the contrary
To.Therefore, valve blocking processing is except the rotation direction of the valve 211 is to close direction and step S405 and step shown in Fig. 8
It is same with valve open treated beyond S406 determination processing, therefore omit its for the processing beyond determination processing herein and say
It is bright.
As shown in figure 8, after the state detection for having carried out step S304 is handled, determination unit 103 judges current sample
Whether the result of state detection processing meets defined 3rd control condition (S405).The 3rd control strip in present embodiment
Part is：RefC=0 and eSig=0；Or refC=0, inRange=1 and eSig=1.In other words, the 3rd control condition and the 1st
Control condition is similarly：The result of determination of symbol when symbol shown in the result of determination of symbol is changed into original sample, or therewith
The opposite symbol of the result of determination of symbol during preceding sample, or be 0, and the absolute value of aperture deviation is target below threshold value A
Aperture is without change.Therefore, the 3rd control condition of so-called satisfaction, with meeting the situation of the 1st control condition again it is representing to turn into real
Border aperture has reached target aperture, or exceedes the state of the target aperture in the range of the A of blind area.
Therefore, if it is determined that to meet the 3rd control condition (S405, yes), the then constant shape for the step S4 being transferred to shown in Fig. 4
State processing.On the other hand, if it is determined that to be unsatisfactory for the 3rd control condition (S405, no), then determination unit 103 judges current sample
Whether the result of state detection processing meets defined 4th control condition (S406).
The 4th control condition in present embodiment is eSig=1 or refC=1.That is, if being unsatisfactory for the 3rd control condition
Meet the 4th control condition, then meet that the situation of the 2nd control condition is same with being unsatisfactory for the 1st control condition, then suspect for target
Aperture is changed and re-starts the situation of processing again, or the inordinate rotation of valve 211 and more than blind area A situation.On the other hand,
Any control condition is unsatisfactory for, suspect be the still miss the mark aperture of valve 211 situation.Therefore, if it is determined that to meet the 4th control
Condition (S406, yes) processed, then the transition state processing for the step S3 being transferred to shown in Fig. 4, if it is determined that to be unsatisfactory for the 4th control strip
Part (S406, no), then perform the processing that step S301 aperture deviation is set to control deviation again.
As described above, by judged based on the 3rd control condition, the aperture of the 4th control condition, as long as so as to actually open
Degree is in the range of the A of blind area but does not reach target aperture yet, and valve 211 just can be made to continue to drive towards direction is closed.Thus, even if producing
The return of valve 211, it can also improve the evolution more than target aperture that valve 211 is rested in the one side in the A of blind area, i.e. blind area A
To the possibility in the range of side, so as to same with valve open treated, the deviation out of blind area A and B is reduced.
Next, reference picture 9 illustrates to handle nought state.Fig. 9 is the flow chart for representing nought state processing.So
Shown in, in nought state processing, due to symbol eSig=0, therefore suspect the state for having reached target aperture for valve 211, therefore,
First, output section 104 sets control deviation=0 (S501), outputs this to drive circuit 23 (S502).Acceptance value is 0 control
The drive circuit 23 of deviation makes the driving of DC motors 212 stop and stop valve 211.Later step after control deviation output
S303, S304 each processing are same with the valve open treated or valve blocking processing, and therefore, explanation herein is omitted.Again
After performing state detection processing, determination unit 103 judges whether the result of the state detection processing of current sample meets to provide
The 5th control condition (S505).
The 5th control condition in present embodiment is：RefC=0 and inRange=1 or eSig=0.That is, target aperture
Without change, actual aperture is in the A of blind area or actual aperture is target aperture.Therefore, if it is determined that to meet the 5th control condition
(S505, yes), then need not rotate valve 211, therefore be transferred to the steady state processing of the step S4 shown in Fig. 4.On the other hand,
Then it is necessarily (i.e. eSig=1 or -1) or refC=1 beyond eSig=0, therefore if being unsatisfactory for the 5th control condition (S505, no)
Suspect causes symbol to become and non-zero because of the rotation of 211 non-original idea of valve, or target aperture has altered.Therefore, now, it is transferred to
The transition state processing of step S3 shown in Fig. 4.
Next, its is detailed to the steady state processing spec.Figure 10 is the flow chart for representing steady state processing.It is permanent
Determine the processing that state processing is discussed further below, i.e. as steady state, control deviation=0 is continued to output, until as defined in meeting
Untill control condition.It is therefore, same with nought state processing in addition to the determination processing of the step S605 shown in Figure 10,
Therefore for the processing beyond the determination processing herein, the description thereof will be omitted.As shown in Figure 10, perform again at state detection
After reason, determination unit 103 judges whether the result of the state detection processing of current sample meets defined 6th control condition
(S605)。
The 6th control condition in present embodiment is refC=1 or outRange=1.Therefore, if it is determined that to be unsatisfactory for the
6 control conditions (S605, yes), then suspect and be changed for target aperture, or because the rotation of 211 non-original idea of valve causes actually to open
Degree deviate from the blind area B of current goal aperture situation, therefore be transferred to the transition state processing of the step S3 shown in Fig. 4.Separately
On the one hand, if it is determined that to be unsatisfactory for the 6th control condition (S605, no), then perform again and step S501 control deviation is set to 0
Processing.In addition, after step S605 determination processing, aperture deviation can be also set to control deviation and output this to driving
After circuit 23, step S3 transition state processing is transferred to.Still, it is also contemplated that although refC=1 but target aperture are in blind
Situation in area A, therefore for the 6th control condition, inRange=0 is set in the case of refC=1.
Present embodiment from the description above, compared with following control methods, it can reduce because the return of valve 211 causes
, deviation from blind area A and B, the control method is：Valve 211 is set to rotate driving to target aperture or more than the target
Untill aperture, i.e. entrance of the actual aperture to blind area A is only judged in blind area A one side, thus, in the absolute value of aperture deviation
As the stage below threshold value A, i.e. in the stage in the actual aperture arrival blind area A of valve 211, control deviation is set to 0.Cause
This, can reduce the frequency for driving DC motors 212 again, therefore can extend the action dwell time of DC motors 212, Jin Erneng
The enough consumption of suppression electric power, deterioration of DC motors 212 etc..Thus, specification degradation (specification can also be used
Downgrading cheap motor control electronic component), so as to the reduction of cost of implementation.
If moreover, rested on more than target aperture in the A of blind area, can because of the return of valve 211 and actual aperture close to mesh
Mark aperture.Therefore, compared with described control method, its control deviation can be reduced, therefore blind area A and B itself can be set
It is narrowlyer fixed, so as to further improve the controlling of cooling water.
In addition, the flow chart illustrated in present embodiment is one, as long as can implement to make valve 211 in target aperture or blind
Driving is rotated in the range of area A to more than the control untill the target aperture, also suitably can change and exchange certainly processing step
Suddenly, control condition is also changed.For example, in addition to inRange, outRange judgement, can also be in the symbol of control deviation
Control deviation is set to 0 mode and is controlled by the stage of number reversion.Now, can be also transferred to control deviation is set into 0
InRange, outRange judgement (or judgement using blind area A and B) are incorporated into after next sample, whether to judge valve 211
Non- original idea there occurs rotate.Moreover, in various judgements, if although refC=1 but inRange=1, target be present and open
Possibility of the degree in the A of blind area, if therefore inRange=1, refC can also be considered as to 0 mode and handled.
The present invention can without departing from its spirit or principal character implemented with other various forms.Therefore, the reality
It is only simply to illustrate in all respects to apply mode, should not the explanation of being construed as limiting property.The scope of the present invention is by claim institute
Show, without any contained by specification text.And then belong to all deformations, various improvement, generation of the equivalency range of claim
Replace and modification is completely in the scope of the present invention.
Control valve device described in claim is for example corresponding to the ECU 31 in the embodiment.Moreover, aperture obtains
Take portion for example corresponding to acquisition unit 101, deviation calculating part is for example corresponding to calculating part 102.Sign determination portion, deviation determination unit and
State determination unit is for example corresponding to determination unit 103, and deviation output section is for example corresponding to output section 104.Drive division for example corresponding to
Drive circuit 23.
[explanation of symbol]
1：Engine-cooling system
23：Drive circuit
31：ECU
101：Acquisition unit
102：Calculating part
103：Determination unit
104：Output section
211：Valve
Claims (4)
- A kind of 1. control valve device, it is characterised in that including：Aperture acquisition unit, obtain the target aperture for the target location for representing valve and actually opening for the current location for representing the valve Degree；Deviation calculating part, calculate the aperture deviation of the target aperture and the actual aperture；Sign determination portion, judge the symbol of the aperture deviation；AndDeviation output section, whenever the target aperture is changed and the acquisition of repetition each aperture, the meter of the aperture deviation When calculation and the judgement of the symbol, exported using the aperture deviation calculated as driving the control deviation of the valve to drive The drive division of the valve is moved, untill the symbol vanishing or opposite symbol.
- 2. control valve device according to claim 1, it is characterised in that also include：Deviation determination unit, judge the absolute value of the aperture deviation whether in prescribed limit；AndState determination unit, when the deviation output section exports the control deviation, the acquisition of progress each aperture, the aperture After the calculating of deviation, the judgement of the symbol and the judgement of the absolute value, judged based on the result of determination of the symbol Whether current valve state meets the rated condition for driving or stopping valve.
- 3. control valve device according to claim 2, it is characterised in thatThe state determination unit judge symbol shown in the result of determination of the symbol whether be and initial sign determination knot Fruit or the opposite symbol of previous sign determination result, or whether be 0, if the symbol shown in the result of determination of the symbol For the symbol opposite with initial sign determination result or previous sign determination result, or it is 0, and the absolute value is in In prescribed limit, and acquired target aperture is without change, then is 0 by control deviation output, to stop valve.
- A kind of 4. valve control method, it is characterised in that including：The target aperture for obtaining the target location for representing valve and the actual aperture for the current location for representing the valve；Calculate the aperture deviation of the target aperture and the actual aperture；Judge the symbol of the aperture deviation；AndThe acquisition of each aperture, the calculating of the aperture deviation and the symbol are repeated whenever the target aperture is changed Judgement when, using the aperture deviation calculated as drive the valve control deviation and export to the drive for driving the valve Dynamic portion, untill the symbol vanishing or opposite symbol.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015118439A JP6737570B2 (en) | 2015-06-11 | 2015-06-11 | Valve control device |
| JP2015-118439 | 2015-06-11 | ||
| PCT/JP2016/064873 WO2016199559A1 (en) | 2015-06-11 | 2016-05-19 | Valve control device and valve control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107533336A true CN107533336A (en) | 2018-01-02 |
Family
ID=57503578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680023728.3A Withdrawn CN107533336A (en) | 2015-06-11 | 2016-05-19 | Control valve device and valve control method |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6737570B2 (en) |
| CN (1) | CN107533336A (en) |
| DE (1) | DE112016002622T5 (en) |
| WO (1) | WO2016199559A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087741A (en) * | 2021-11-29 | 2022-02-25 | 珠海格力电器股份有限公司 | Control method and device of electronic throttling element, storage medium and air conditioner |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114001194B (en) * | 2020-07-28 | 2024-05-14 | 青岛海尔空调电子有限公司 | Method and device for adjusting and monitoring opening of electronic expansion valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5653208U (en) * | 1979-09-29 | 1981-05-11 | ||
| JPH0619556A (en) * | 1992-07-02 | 1994-01-28 | Hitachi Ltd | Instrumentation controller |
| JP2001280301A (en) * | 2000-03-30 | 2001-10-10 | Yokogawa Electric Corp | Valve positioner |
| JP2012194650A (en) * | 2011-03-15 | 2012-10-11 | Toshiba Corp | Valve opening degree control system |
| JP2014156828A (en) * | 2013-02-18 | 2014-08-28 | Mikuni Corp | Valve control device and valve control method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63244120A (en) * | 1987-03-31 | 1988-10-11 | Toshiba Corp | Controller |
| JPH05282006A (en) * | 1992-03-31 | 1993-10-29 | Yamatake Honeywell Co Ltd | Position proportional controller |
-
2015
- 2015-06-11 JP JP2015118439A patent/JP6737570B2/en active Active
-
2016
- 2016-05-19 WO PCT/JP2016/064873 patent/WO2016199559A1/en active Application Filing
- 2016-05-19 CN CN201680023728.3A patent/CN107533336A/en not_active Withdrawn
- 2016-05-19 DE DE112016002622.6T patent/DE112016002622T5/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5653208U (en) * | 1979-09-29 | 1981-05-11 | ||
| JPH0619556A (en) * | 1992-07-02 | 1994-01-28 | Hitachi Ltd | Instrumentation controller |
| JP2001280301A (en) * | 2000-03-30 | 2001-10-10 | Yokogawa Electric Corp | Valve positioner |
| JP2012194650A (en) * | 2011-03-15 | 2012-10-11 | Toshiba Corp | Valve opening degree control system |
| JP2014156828A (en) * | 2013-02-18 | 2014-08-28 | Mikuni Corp | Valve control device and valve control method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087741A (en) * | 2021-11-29 | 2022-02-25 | 珠海格力电器股份有限公司 | Control method and device of electronic throttling element, storage medium and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017004309A (en) | 2017-01-05 |
| DE112016002622T5 (en) | 2018-03-22 |
| JP6737570B2 (en) | 2020-08-12 |
| WO2016199559A1 (en) | 2016-12-15 |
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Application publication date: 20180102 |