CN106224240B - A kind of air blower - Google Patents
A kind of air blower Download PDFInfo
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- CN106224240B CN106224240B CN201610654858.9A CN201610654858A CN106224240B CN 106224240 B CN106224240 B CN 106224240B CN 201610654858 A CN201610654858 A CN 201610654858A CN 106224240 B CN106224240 B CN 106224240B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of air blower, including motor, air blower body, air chamber and base, wind pressure sensor is provided with the air outlet of the air chamber, a parameter preset X for representing blower fan output pressure is configured with the air blower operating mode, the control circuit of the motor follows parameter preset to export a reference control voltage Vx, the wind pressure sensor is connected with process circuit, the sampled voltage Vy that wind pressure sensor is exported is processed into by the process circuit compares parameter Y, process circuit obtains convergence parameter Z1 and regulation parameter Z2 simultaneously, reality output control voltage Vx ' is determined according to regulation equation；Adjusting equation is：Vx’‑Vx=a*(Z2+Z1);Z1=Y‑X;Z2=Z1*b*t*|Y‑X|；In formula, Vx ' represents actual control voltage, and a, b represent that any constant, t represent regulating time；When parameter Y is compared in process circuit generation, the air blower enters adjustment state until comparing parameter Y equal to parameter preset X.Realize that blast constant pressure is adjusted, the time is short, precision is high.
Description
Technical field
The present invention relates to a kind of air blower.
Background technology
Air blower is mainly made up of following six part:Motor, air cleaner, air blower body, air chamber, base are (simultaneous
Fuel tank), oil dripping mouth.Air blower is operated by the rotor eccentricity of cylinder interior biasing, and becomes the volume between the blade in rotor slot
Change draws air into, compressed, spuing.Lubrication is sent to oil dripping mouth automatically using the pressure differential of air blower in operation, vapour is instilled
To reduce friction and noise in cylinder, while cylinder charge can be kept not flow back, such air blower is also known as slide sheet type air blower.
1. air blower operates no friction due to impeller in body, it is not necessary to lubricate, and makes the gas of discharge not oil-containing.Being
The preferable Geldart-D particle source of the gas of the industry such as work, food.2. air blower belongs to volume operating type air blower.In use, with pressure
Change, flow changes very small.But flow changes with rotating speed.Therefore, the range of choice of pressure is very wide, and the selection of flow can lead to
Cross selection rotating speed and reach needs.3. the rotating speed of air blower is higher, and the gap between rotor and rotor, rotor and body is small, from
And reveal few, volumetric efficiency is higher.4. its mechanical friction of the structures shape of air blower loss is very small.Because only that bearing and tooth
Wheel set has Mechanical Contact in selection, and rotor, casing and gear ring have enough mechanical strengths.Operation safety, service life is long
It is a big characteristic of air blower product.5. the rotor of air blower, by quiet, dynamic balance check.Finished product smooth running, vibration pole
It is small.
In general, the air pressure of new air blower output can be adjusted, worked with the equipment for meeting different needs sources of the gas,
But for regulation, because actual conditions, rotation abrasion, damping situation can all cause the blast exported and pre- inside air chamber
If blast have certain error, if this error be exaggerated, easily bring and output load caused to gas equipment, to itself
Service life can also produce influence, so needing a kind of faster method of regulation.
The content of the invention
In view of this, an object of the present disclosure is to provide a kind of a kind of air blast by control voltage feedback regulation stable state
Machine；
The second object of the present invention is to provide a kind of a kind of air blower by control electric current feedback regulation stable state；
The third object of the present invention is to provide a kind of control method of real-time regulation air blower power output；
The fourth object of the present invention is to provide the control method that a kind of timesharing adjusts air blower power output.
In order to solve the above-mentioned technical problem, the technical scheme is that：
To realize the first object of the present invention, design a kind of air blower, including motor, air blower body, air chamber and
Base, it is characterised in that be provided with the air outlet of the air chamber under wind pressure sensor, the air blower operating mode and be configured with one
The parameter preset X of blower fan output pressure is represented, the control circuit of the motor follows parameter preset to export a reference control voltage
Vx, the wind pressure sensor is connected with process circuit, the sampled voltage Vy processing that the process circuit exports wind pressure sensor
Into parameter Y is compared, while process circuit obtains convergence parameter Z1 and regulation parameter Z2, reality output control is determined according to regulation equation
Voltage Vx ' processed；
Adjusting equation is： Vx’-Vx=a*(Z2+Z1);
Z1=Y-X;
Z2=Z1*b*t*|Y-X|；
In formula, Vx ' represents actual control voltage, and a, b represent that any constant, t represent regulating time；
When parameter Y is compared in process circuit generation, the air blower enters adjustment state until comparing parameter Y equal to default
Parameter X.
First, it is however generally that, the speed governing of motor is realized by frequency converter, and passes through a reference control voltage controlled motor
Power output, and the present invention sets at air outlet wind pressure sensor wind pressure sensor Real-time Feedback one to compare parameter Y again, and this
Sample can just know difference D=X-Y of actual air-out power and default air-out power；And if this difference to be adjusted,
Now need consider parameter situation have it is following some：1st, need to ensure regulating time, if regulating time is long, it is impossible to play
Obvious regulating effect, if regulating time is too short, lift/drop journey of required reference control voltage is just larger, so holds
Easily motor is operated in the state of overload/zero load, influences service life；2nd, need to ensure degree of regulation, and need clear and definite
, due to Y value when in real time, that is, during regulation, during Y value always all change, if so to ensure
Degree of regulation, then once Y value reduces, regulation efficiency should tend towards stability, but should not be directly using X-Y difference as conversion
Amount, so can only cause the value for adjusting Y infinitely to do convergence to X values, and Y more levels off to X, then the amplitude adjusted is smaller, and the time gets over
It is long, it is unfavorable for real guarantee progress, so in formula in addition to setting convergence parameter Z1, have also been devised regulation parameter Z2, regulation ginseng
Number can increase over time and increase the proportion of regulation parameter, and regulation parameter is second order parameter, so the base of regulation parameter
Quasi- amount is smaller, and when make it that regulation parameter is introduced, in the case that beginning difference is larger, regulation parameter is smaller due to T, so its value
It is smaller, and convergence computing is mainly done by convergence parameter, and when regulating time increase so that Y and X are closer to, and now main
Be adjusted by convergence parameter it is substantially unreasonable, so now regulation parameter is acted on it simultaneously, and the now difference of second order
Value is reduced, so influence of the regulation parameter to result will not exponentially be exploded, when simply reaching certain moment, regulation parameter
Introduce so that Y is fluctuated at X, finally because the difference of regulation parameter is gradually reduced, so function can be received at X
Hold back, be maintained at X stable state, and the time required for whole process is optimal, and discharge quantity of fan can be caused faster simultaneously
Restrained, reach a preferable regulating effect.
Further：When completing Primary regulation, the actual control voltage Vx ' of record now makes a=Vx '/X.When once
After the completion of regulation, a value can be now redefined according to regulation result now, so so that a value can held
Constantly corrected during row, a represents the relation of actual air output and regulation voltage caused by ambient parameter, if so
A value is more accurate, then can improve degree of regulation and reduce regulating time.
Further：Constant b is adjustable.By in this way, what is represented due to b is the convergent time, also represent simultaneously
The proportion of adjustment function, so required at the time of by adjusting b the function can be allowed to be adjusted after convergence and during regulation
Time and amplitude, and b value can be pre-configured with, and be adjusted according to actual service condition.The present invention is not only applicable
In the feedback regulation of air blower, apply also under system control, the regulation algorithm of air blower, using y value as system regulation
Value, it is possible to play a part of regulation and effect.
To realize the second object of the present invention there is provided a kind of air blower, including motor, air blower body, air chamber and
It is provided with base, the air outlet of the air chamber under wind pressure sensor, the air blower operating mode and is configured with one to represent blower fan defeated
Go out the parameter preset X of pressure, the control circuit of the motor follows parameter preset to export a benchmark control electric current Ix, the blast
Sensor is connected with process circuit, and the sample rate current Iy that wind pressure sensor is exported is processed into by the process circuit compares parameter Y,
Process circuit obtains convergence parameter Z1 and regulation parameter Z2 simultaneously, and reality output control electric current Ix ' is determined according to regulation equation；
Adjusting equation is： Ix’-Ix=a*(Z2+Z1);
Z1=Y-X;
Z2=Z1*b*t*|Y-X|；
In formula, Ix ' represents actual control electric current, and a, b represent that any constant, t represent regulating time；
When parameter Y is compared in process circuit generation, the air blower enters adjustment state until comparing parameter Y equal to default
Parameter X.Described above is by detecting that voltage and feedback voltage realize the control method to air blower under voltage control so that
Air compressor control is balanced, and the reality output amount of air blower is determined by exciting current in fact, and if control voltage also
Need to exclude the unrelated loss such as iron loss and copper loss, so, the difficulty for asking for a and b is larger, and directly detects by transformer
Exciting current, is directly converted by exciting current, and so, algorithm is relatively simple, and the speed of service is very fast, can more keep
Precision, and it is corresponding cause wind pressure sensor detection detected also by this mode, it is ensured that service efficiency and precision,
System operations speed can equally be improved.
Further：When completing Primary regulation, the actual control electric current Ix ' of record now makes a=Ix '/X.Such one
Come so that a value can be corrected constantly in the process of implementation, and a represents actual air output and tune caused by ambient parameter
The relation for pressure of economizing on electricity, if so a value is more accurate, then degree of regulation can be improved and regulating time is reduced.
To realize the third object of the present invention there is provided a kind of air compressor control method,
Step one, obtain parameter preset X and compare parameter Y value；
Step 2, enters step 3 when parameter preset X is more than threshold value Q with the difference for comparing parameter Y；
Step 3, by adjusting the output that equation adjusts air blower described in any one as described in claim 1-5
Power.By the difference for judging parameter preset X He comparing parameter Y, when parameter preset X is less than necessarily with the difference for comparing parameter Y
During value, within allowable error, it is possible to ignore, and when parameter preset X and the difference increase for comparing parameter Y, it is necessary to
Be adjusted, enter back into above-mentioned algorithm, it is ensured that air blower work long hours under automatic detection and avoid unrelated regulation.
To realize the fourth object of the present invention there is provided a kind of air compressor control method,
Step one, obtain parameter preset X every the t times and compare parameter Y value；
Step 2, enters step 3 when parameter preset X is more than threshold value Q with the difference for comparing parameter Y；
Step 3, by adjusting the output that equation adjusts air blower described in any one as described in claim 1-5
Power, resumes waiting for the t times with return to step one.By in this way, need set certain time, with provide regulating time with
And the response time, it is ensured that wind pressure sensor is not in delayed.
Further：At least formed with a windward side at the air outlet of described air blower, the windward side with it is described go out
Wind direction is vertical, and the wind pressure sensor is arranged on the windward side.In order to more accurate, it is necessary to form one at air outlet
The perpendicular face with air-out direction, carries out the installation to wind pressure sensor, not so needs the deflection progress to wind pressure sensor
Calculate, improve calculating cost and program complexity.
The technology of the present invention effect major embodiment is in the following areas：Realize that blast constant pressure is adjusted, the time is short, precision is high.
Brief description of the drawings
Fig. 1：Appearance assumption diagram of the present invention；
Fig. 2：Windward side schematic diagram of the present invention；
Fig. 3：Circuit topology schematic diagram of the present invention.
Reference：1st, motor；2nd, air blower body；3rd, air chamber；31st, windward side；4th, base；5th, wind pressure sensor；
Embodiment
Below in conjunction with accompanying drawing, the embodiment to the present invention is described in further detail, so that technical solution of the present invention is more
It should be readily appreciated that and grasp.
First, shown in reference picture 1, its mechanical part design a kind of as follows, air blower, including motor 1, air blower body 2,
Wind pressure sensor 5 is provided with air chamber 3 and base 4, the air outlet of the air chamber 3, shown in reference picture 2, air blower
At least formed with a windward side 31 at air outlet, the windward side 31 is vertical with the air-out direction, and the wind pressure sensor 5 is set
It is placed on the windward side 31.In order to more accurate, it is necessary to form one and the perpendicular face of air-out direction at air outlet, carry out
Installation to wind pressure sensor 5, not so needs to calculate the deflection of wind pressure sensor 5, improves calculating cost and journey
Sequence complexity.And in the design, key component is not in Machine Design part, Machine Design can be with other blower fan structure phases
Together, it is only used in its air outlet position and opens up the installing space that a windward side 31 provides a wind pressure sensor 5.
Secondly, its hardware circuit is realized and made explanations, hardware circuit core includes one piece of MCU chip first, led to
MCU chip is crossed to realize to the processing of data, acquisition, control, and in the present invention, in order to consider the integrity of whole system, MCU is excellent
Elect dsp chip as, beneficial to the control to motor 1 and the demand of data processing can be met.There is provided following module：
Functional module includes having, process circuit, the drive circuit of motor 1, first process circuit connection wind pressure sensor 5, connects
Receive its analog signal, analog signal be converted into data signal, and same process circuit is default is equipped with algorithm, for by VY or
IY is converted into Y, and algorithm is not limited, and its essence is analog quantity being converted into digital quantity, and simultaneously with X uniform units, it is convenient
Data processing is done to use, and analog-to-digital conversion that process circuit is related to, calculation function, it is pre-configured with, does not limit；Secondly,
The drive circuit of motor 1, includes feedback function, if the drive circuit of motor 1 needs the value for obtaining VX more to facilitate, only in motor
The output end at the digital-to-analogue conversion end of 1 drive circuit carries out data acquisition, and obtains current value if desired, then needs extra in electricity
A transformer is configured on machine 1, and the exciting current obtained under work is calculated by the acquisition to mutual inducing current, so that it is determined that IX
Value.
Supplemental functionality includes, input module, output module and communication module；Input module can be key first
Other input modes such as disk, liquid crystal display or microphone, are not limited herein, and input module major function is to provide to becoming
Measure b value and default X value is inputted so that the situation that user can be voluntarily to input is adjusted；And export
Module is used to react current operating mode, is easy to user to understand the working condition of current air blower, and it should be noted that output mould
Block can carry out simple information explanation by indicator lamp, buzzer etc., can also interact complex information by liquid crystal display etc., can
Linear relationship chart with the discharge pressure of fan including blower fan and regulation blast etc.；And communication module includes receiving and sending signal two
Function, its receive capabilities can receive the signal of distal end or near-end, and signal includes wire signal and wireless signal, and sends letter
It number can be then the signal for feeding back air blower working condition, will not be described here.
Basic module includes power module, memory and piece external register, and power module is used to receive alternating current
Be converted into each module and the receivable direct currents of MVU, and memory and piece external register ensure data storage and some
The additional conditions of configuration are needed under functional module power-down conditions.
Finally software section is illustrated.One, which is configured with, under the air blower operating mode of embodiment 1 represents blower fan output pressure
Parameter preset X, the control circuit of the motor 1 follows parameter preset to export a reference control voltage Vx, the wind pressure sensor 5
Process circuit is connected with, the sampled voltage Vy that wind pressure sensor 5 is exported is processed into by the process circuit compares parameter Y, simultaneously
Process circuit obtains convergence parameter Z1 and regulation parameter Z2, and reality output control voltage Vx ' is determined according to regulation equation；Regulation side
Cheng Wei： Vx’-Vx=a*(Z2+Z1);
Z1=Y-X;Z2=Z1*b*t*|Y-X|；In formula, Vx ' represents actual control voltage, and a, b represent that any constant, t are represented
Regulating time；When parameter Y is compared in process circuit generation, the air blower enters adjustment state and is equal in advance until comparing parameter Y
Setting parameter X.
First, it is however generally that, the speed governing of motor 1 is realized by frequency converter, and passes through a reference control voltage controlled motor 1
Power output, and the present invention sets at air outlet 5 wind pressure sensor of wind pressure sensor, 5 Real-time Feedback one to compare parameter Y again,
And can thus know difference D=X-Y of actual air-out power and default air-out power；And if to be carried out to this difference
Regulation, now need consider parameter situation have it is following some：1st, need to ensure regulating time, if regulating time is long, nothing
Method plays obvious regulating effect, if regulating time is too short, and lift/drop journey of required reference control voltage is just larger,
So easily motor 1 is operated in the state of overload/zero load, influences service life；2nd, need to ensure degree of regulation, and need
It will be clear that due to Y value when in real time, that is, during regulation, during Y value always all change, if so
Ensure degree of regulation, then once Y value reduces, regulation efficiency should tend towards stability, but should not be directly with X-Y difference
For amount of translation, it so can only cause the value for adjusting Y is unlimited to do convergence to X values, and Y more levels off to X, then the amplitude adjusted is smaller,
Time is longer, is unfavorable for real guarantee progress, so regulation parameter Z2 is have also been devised in addition to convergence parameter Z1 is set in formula,
Regulation parameter can increase over time and increase the proportion of regulation parameter, and regulation parameter is second order parameter, so regulation ginseng
Several datum quantities is smaller, and when make it that regulation parameter is introduced, in the case that beginning difference is larger, regulation parameter is smaller due to T, institute
It is smaller with its value, and convergence computing is mainly done by convergence parameter, and when regulating time increase so that Y and X are closer to, and this
When it is main be adjusted by convergence parameter it is substantially unreasonable, so now regulation parameter is acted on it simultaneously, and now two
The difference of rank is reduced, so influence of the regulation parameter to result will not exponentially be exploded, when simply reaching certain moment, adjusts
Save parameter to introduce so that Y is fluctuated at X, finally because the difference of regulation parameter is gradually reduced, so function can be at X
Restrained, be maintained at X stable state, and the time required for whole process is optimal, and can cause faster simultaneously defeated
Air output is restrained, and reaches a preferable regulating effect.
When completing Primary regulation, the actual control voltage Vx ' of record now makes a=Vx '/X.When Primary regulation is completed
Afterwards, a value can be now redefined according to regulation result now, so so that a value can be in the process of implementation
Constantly corrected, a represents the relation of caused by ambient parameter actual air output and regulation voltage, if so a value more
Plus it is accurate, then degree of regulation can be improved and regulating time is reduced.Constant b is adjustable.By in this way, being represented due to b
It it is the convergent time, while the proportion of adjustment function is also represent, so by adjusting b function can be allowed to be adjusted after convergence
Required time and amplitude at the time of section and when adjusting, and b value can be pre-configured with, and entered according to actual service condition
Row regulation.The present invention is not only applicable to the feedback regulation of air blower, applies also under system control, and the regulation of air blower is calculated
Method, using y value as system regulated value, it is possible to play a part of regulation and effect.
A kind of air blower of embodiment 2, including motor 1, air blower body 2, air chamber 3 and base 4, the air chamber 3
Air outlet on be provided with wind pressure sensor 5, the air blower operating mode and be configured with a default ginseng for representing blower fan output pressure
Number X, the control circuit of the motor 1 follows parameter preset to export a benchmark control electric current Ix, and the wind pressure sensor 5 is connected with
Process circuit, the sample rate current Iy that wind pressure sensor 5 is exported is processed into by the process circuit compares parameter Y, while handling electricity
Road obtains convergence parameter Z1 and regulation parameter Z2, and reality output control electric current Ix ' is determined according to regulation equation；
Adjusting equation is： Ix’-Ix=a*(Z2+Z1);Z1=Y-X；Z2=Z1*b*t*|Y-X|；In formula, Ix ' represents actual
Control electric current, a, b represent that any constant, t represent regulating time；
When parameter Y is compared in process circuit generation, the air blower enters adjustment state until comparing parameter Y equal to default
Parameter X.Described above is by detecting that voltage and feedback voltage realize the control method to air blower under voltage control so that
Air compressor control is balanced, and the reality output amount of air blower is determined by exciting current in fact, and if control voltage also
Need to exclude the unrelated loss such as iron loss and copper loss, so, the difficulty for asking for a and b is larger, and directly detects by transformer
Exciting current, is directly converted by exciting current, and so, algorithm is relatively simple, and the speed of service is very fast, can more keep
Precision, and it is corresponding cause wind pressure sensor 5 detection detected also by this mode, it is ensured that service efficiency and essence
Degree, can equally improve system operations speed.
Further：When completing Primary regulation, the actual control electric current Ix ' of record now makes a=Ix '/X.Such one
Come so that a value can be corrected constantly in the process of implementation, and a represents actual air output and tune caused by ambient parameter
The relation for pressure of economizing on electricity, if so a value is more accurate, then degree of regulation can be improved and regulating time is reduced.
Embodiment 3, on the basis of embodiment 1 or 2, a kind of air compressor control method,
Step one, X and Y value is obtained；
Step 2, enters step 3 when X and Y difference is more than threshold value Q；
Step 3, by adjusting the output that equation adjusts air blower described in any one as described in claim 1-5
Power.By judging X and Y difference, when X and Y difference is less than certain value, within allowable error, it is possible to ignore,
And when X and Y difference increase, it is necessary to be adjusted, enter back into above-mentioned algorithm, it is ensured that air blower work long hours under from
It is dynamic to detect and avoid unrelated regulation.
Embodiment 4, on the basis of embodiment 1 or 2, a kind of air compressor control method,
Step one, X and Y value are obtained every the t times；
Step 2, enters step 3 when X and Y difference is more than threshold value Q；
Step 3, by adjusting the output that equation adjusts air blower described in any one as described in claim 1-5
Power, resumes waiting for the t times with return to step one.By in this way, need set certain time, with provide regulating time with
And the response time, it is ensured that wind pressure sensor 5 is not in delayed.
Certainly, it is the representative instance of the present invention above, in addition, the present invention can also have other a variety of specific implementations
The technical scheme of mode, all use equivalent substitutions or equivalent transformation formation, all falls within the scope of protection of present invention.
Claims (8)
1. a kind of air blower, including motor, air blower body, air chamber and base, it is characterised in that the air chamber goes out
It is provided with air port under wind pressure sensor, the air blower operating mode and is configured with a parameter preset X for representing blower fan output pressure, institute
The control circuit for stating motor follows parameter preset to export a reference control voltage Vx, and the wind pressure sensor is connected with processing electricity
Road, the sampled voltage Vy that wind pressure sensor is exported is processed into by the process circuit compares parameter Y, while process circuit is become
Nearly parameter Z1 and regulation parameter Z2, reality output control voltage Vx ' is determined according to regulation equation；
Adjusting equation is： Vx’-Vx=a*(Z2+Z1);
Z1=Y-X;
Z2=Z1*b*t*|Y-X|；
In formula, Vx ' represents actual control voltage, and a, b represent that any constant, t represent regulating time；
When parameter Y is compared in process circuit generation, the air blower enters adjustment state until comparing parameter Y equal to parameter preset
X。
2. a kind of air blower as claimed in claim 1, it is characterised in that：
When completing Primary regulation, the actual control voltage Vx ' of record now makes a=Vx '/X.
3. a kind of air blower as claimed in claim 1, it is characterised in that：Constant b is adjustable.
4. a kind of air blower, including motor, air blower body, air chamber and base, it is characterised in that the air chamber goes out
It is provided with air port under wind pressure sensor, the air blower operating mode and is configured with a parameter preset X for representing blower fan output pressure, institute
The control circuit for stating motor follows parameter preset to export a benchmark control electric current Ix, and the wind pressure sensor is connected with processing electricity
Road, the sample rate current Iy that wind pressure sensor is exported is processed into by the process circuit compares parameter Y, while process circuit is become
Nearly parameter Z1 and regulation parameter Z2, reality output control electric current Ix ' is determined according to regulation equation；
Adjusting equation is： Ix’-Ix=a*(Z2+Z1);
Z1=Y-X;
Z2=Z1*b*t*|Y-X|；
In formula, Ix ' represents actual control electric current, and a, b represent that any constant, t represent regulating time；
When parameter Y is compared in process circuit generation, the air blower enters adjustment state until comparing parameter Y equal to parameter preset
X。
5. a kind of air blower as claimed in claim 4, it is characterised in that：
When completing Primary regulation, the actual control electric current Ix ' of record now makes a=Ix '/X.
6. a kind of air compressor control method, it is characterised in that：
Step one, obtain parameter preset X and compare parameter Y value；
Step 2, enters step 3 when parameter preset X is more than threshold value Q with the difference for comparing parameter Y；
Step 3, the power output of air blower is adjusted by the regulation equation as described in claim 1-5 any one.
7. a kind of air compressor control method, it is characterised in that：
Step one, obtain parameter preset X every the t times and compare parameter Y value；
Step 2, enters step 3 when parameter preset X is more than threshold value Q with the difference for comparing parameter Y；
Step 3, the power output of air blower is adjusted by the regulation equation as described in claim 1-5 any one, again
The t times are waited with return to step one.
8. a kind of air blower as claimed in claim 1, it is characterised in that：At the air outlet of described air blower at least formed with
One windward side, the windward side is vertical with air-out direction, and the wind pressure sensor is arranged on the windward side.
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