CN103673225A - Automatic control method of air conditioner of automobile - Google Patents

Abstract

The invention discloses an automatic control method of an air conditioner of an automobile. The automatic control method of the air conditioner of the automobile comprises the steps that a controller initializes various parameters of a system, the controller reads detection values of sensors, a main parameter TD value and a temperature air door opening parameter Hi value are calculated according to the detection values of the sensors, and the controller achieves control over a compressor of the air conditioner, control over internal circulation and external circulation of the air conditioner, control over the air quantity of the air conditioner, control over air door modes of the air conditioner, and control over a temperature air door of the air conditioner according to the TD value and the Hi value. According to the automatic control method of the air conditioner of the automobile, automatic control over the environmental temperature of a compartment of the automobile can be achieved, and a driver can feel comfortable.

Description

A kind of air conditioning for automobiles autocontrol method

Technical field

The present invention relates to a kind of air conditioning control method, especially a kind of control method of air conditioning for automobiles.

Background technology

The task of air conditioning for automobiles makes vehicle interior temperature comfortable, with fresh air, and this is also the high-comfort requirement of occupant to automobile inner air.Due to the difference of winter and summer temperature, after occupant gets on the bus, wish that car indoor temperature reaches comfortable temperature soon; When car travels under different environment, air quality and humidity are different, may make the degradation of air in car, and occupant's health is formed to injury, so need to allow the interior air of car keep pure and fresh.Therefore just need a kind of control method that can automatically control on-board air conditioner.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of comfortable air-conditioning autocontrol method of car indoor environment temperature that can allow.

In order to address the above problem, the invention provides a kind of air conditioning for automobiles autocontrol method, adopt controller automatically to control the air-conditioning system of automobile, at automobile, easily by sunlit place, sunlight sensor is set, evaporator outlet place at automobile arranges evaporator temperature sensor, and the front portion outside automobile arranges car outdoor temperature sensor, at car room, car indoor temperature transmitter is set, in the heater of automobile, cooling-water temperature sensor is installed, autocontrol method comprises the steps:

Step 1, the aperture coefficient Core_Eff of controller to air door, the AC threshold value that air-conditioning is controlled automatically, the unlatching threshold value of compressor, compressor close threshold value, the interior cycle threshold of Air-conditioning Cycle, the outer circulation threshold value of Air-conditioning Cycle, the air quantity gear threshold value of air-conditioning, the air door pattern threshold value of air-conditioning and the aperture threshold value of air door initialize assignment, and read vehicle right and left both sides solar radiation intensity level L_Tsun and the R_Tsun that sunlight sensor detects, the air themperature value Tevap of the evaporimeter downstream ventilating opening that evaporator temperature sensor detects, the outer temperature value OutTemp of car that car outdoor temperature sensor detects, the coolant temperature value Twater of the heater that in the car that car indoor temperature transmitter detects, the temperature value L_Tcab of the left and right sides and R_Tcab and cooling-water temperature sensor detect,

Step 2, controller calculates principal parameter TD value and is:

TD=L_TD*H+R_TD*(1-H)

Wherein, H is left side parameter weighted value in car, 0<H<1, and in car, left and right sides principal parameter L_TD and R_TD are respectively:

L_TD=(A*(L_Tcab-25)+B*(OutTemp-25)+C*L_Tsun-D*(L_TempSet-25)+E)

R_TD=(A*(R_Tcab-25)+B*(OutTemp-25)+C*R_Tsun-D*(R_TempSet-25)+E)

Wherein, L_TempSet and R_TempSet are respectively left and right desired temperature in car, by left and right temperature adjustment knob, set, and A, B, C, D and E are respectively vehicle interior temperature coefficient, the outer temperature coefficient of car, solar radiation coefficient, design temperature coefficient and supplementary parameter;

Step 3, controller comes accounting temperature throttle opening Parameter H i value to be according to TD value, Twater value and Tevap value:

Hi=Core_Eff*(25-Tevap-G_TD*TD)/(Twater-Tevap)

Wherein, TD value when G_TD is OutTemp=25,

$\mathrm{Twater}-\mathrm{Tevap}=\left\{\begin{array}{cc}20,& \mathrm{Twater}-\mathrm{Tevap}<20\\ \mathrm{Twater}-\mathrm{Tevap},& \mathrm{Twater}-\mathrm{Tevap}\&GreaterEqual;20\end{array}\right.;$

Step 4, controller carries out compressor of air conditioner control, the control of air-conditioning inner-outer circulation, air-conditioning air volume control, the control of air conditioner damper pattern and air-conditioner temperature airdoor control,

Compressor of air conditioner is controlled the size that is first compared TD value and AC threshold value by controller, if TD value >AC threshold value, controller obtains AC request signal, again by controller comparison Tevap value and unlatching threshold value and the size of closing threshold value, if Tevap value >=open threshold value, controller is controlled and is opened compressor, if Tevap value≤close threshold value, controller is controlled close compressor, if close threshold value <Tevap value <, open threshold value, compressor keeps current state not change;

Air-conditioning inner-outer circulation is controlled the size that is compared TD value and interior cycle threshold and outer circulation threshold value by controller, if TD value >=interior cycle threshold, controller is controlled air-conditioning and is carried out interior circulation, if TD value≤outer circulation threshold value, controller is controlled air-conditioning and is carried out outer circulation, if cycle threshold in outer circulation threshold value <TD value <, air-conditioning keeps current recurrent state not change;

Air-conditioning air volume is controlled the size that is compared TD value and each air quantity gear threshold value by controller, when TD value > 0, if TD value is less than the minimum positive threshold value of air quantity gear, controller cuts out air blast, if TD value is greater than the maximum positive threshold value of air quantity gear, controller setting air quantity is maximum gear, if TD value equals the positive threshold value of certain air quantity gear, controller is set corresponding air quantity gear, if TD value between two positive threshold values of adjacent air quantity gear, keeps current air quantity gear constant; When TD value≤0, if TD value is less than minimum air quantity gear negative threshold value, controller setting air quantity is maximum gear, if TD value is greater than maximum air quantity gear negative threshold value, controller cuts out air blast, if TD value equals certain air quantity gear negative threshold value, controller is set corresponding air quantity gear, if TD value between two adjacent air quantity gear negative threshold values, keeps current air quantity gear constant;

Air conditioner damper pattern is controlled and first by controller, is determined current air door pattern, compare again the size of TD value and each air door pattern threshold value, air door pattern threshold value comprises that full blast road rises threshold value, full blast road falls threshold value, blows face threshold value and blows pin threshold value, when air door pattern is when blowing pin pattern, if TD value < blows face threshold value, keep blowing pin pattern and do not change, if TD value >=blow face threshold value, controller is set air door pattern for blowing face pattern; When air door pattern is when blowing face pattern, if TD value≤blow pin threshold value, controller is set air door pattern for blowing pin pattern, if blow pin threshold value < TD value < air channel, rise threshold value, keeping blowing face pattern does not change, if TD value >=full blast road rises threshold value, controller setting air door pattern is full air vent mode; When air door pattern is full air vent mode, if threshold value falls in TD value≤full blast road, controller is set air door pattern for blowing face pattern, if threshold value falls in TD value > full blast road, keeps full air vent mode not change;

Air-conditioner temperature airdoor control is compared the size of Hi value and each throttle opening threshold value by controller, if Hi value is greater than maximum throttle opening threshold value, controller design temperature full trrottle, if Hi value is less than minimum throttle opening threshold value, controller design temperature air door is closed, if Hi value equals one of them throttle opening threshold value, controller design temperature air door is corresponding unlatching ratio, if Hi value is between two adjacent throttle opening threshold values, temperature damper keeps current unlatching ratio.

Adopt sunlight sensor to detect vehicle right and left both sides solar radiation intensity level, evaporator temperature sensor detects the air themperature value of evaporimeter downstream ventilating opening, the outer temperature value of car outdoor temperature sensor inspection vehicle, the temperature value of the left and right sides in car indoor temperature transmitter inspection vehicle, cooling-water temperature sensor detects coolant temperature value and the mechanical angle sensor values detected temperatures throttle opening value of heater, and the detected value of these sensors is sent to controller, controller calculates principal parameter TD value and temperature damper aperture Parameter H i value according to these detected values again, and according to TD value, the magnitude relationship of Hi value and initialized each threshold value, realizing compressor of air conditioner controls, air-conditioning inner-outer circulation is controlled, air-conditioning air volume is controlled, air conditioner damper pattern is controlled and air-conditioner temperature airdoor control, thereby realize the automatic control to car indoor environment temperature.

Scheme, also comprises the steps: as a further improvement on the present invention

Step 5, automobile cuts out or during power-off, controller is preserved current normal state of a control.When automobile cuts out, controller is preserved current normal state of a control, records the car indoor environment that user sets, and can when next automobile starting, enter fast the car room environmental of setting last time.

Scheme as a further improvement on the present invention, step 1 middle controller has also read the temperature damper opening value H0 that mechanical angle sensor detects, for feeding back the unlatching ratio of Current Temperatures air door.The temperature damper opening value H0 that adopts mechanical angle sensor to survey, can feed back to controller by the current opening angle of temperature damper, makes controller can open to temperature damper the accurate control of ratio.

Beneficial effect of the present invention is: (1) adopts controller to read the parameter of each sensor on automobile, and utilize calculation of parameter principal parameter TD value and the temperature damper aperture Parameter H i value read, again according to the magnitude relationship of each threshold value of TD value, Hi value and setting, realize that compressor of air conditioner is controlled, air-conditioning inner-outer circulation is controlled, air-conditioning air volume is controlled, air conditioner damper pattern is controlled and air-conditioner temperature airdoor control, make the indoor environment temperature of car can auto-adjustment control; (2) when automobile cuts out, controller is preserved current normal state of a control, records the car room environmental that user sets, and can when next automobile starting, enter fast the car indoor environment of setting last time; (3) the temperature damper opening value H0 that adopts mechanical angle sensor to survey, makes controller can open to temperature damper the accurate control of ratio.

Accompanying drawing explanation

Fig. 1 is control method flow chart of the present invention;

Fig. 2 is compressor control schematic diagram of the present invention;

Fig. 3 is that inner-outer circulation of the present invention is controlled schematic diagram;

Fig. 4 is that air quantity of the present invention is controlled schematic diagram;

Fig. 5 is that air door pattern of the present invention is controlled schematic diagram;

Fig. 6 is that temperature damper of the present invention is controlled schematic diagram.

The specific embodiment

As shown in Figure 1, air conditioning for automobiles autocontrol method of the present invention, adopt controller automatically to control the air-conditioning system of automobile, at automobile, easily by sunlit place, sunlight sensor is set, in the present invention, sunlight sensor is arranged on to the instrument board top of automobile, evaporator outlet place at automobile arranges evaporator temperature sensor, front portion outside automobile arranges car outdoor temperature sensor, at car room, car indoor temperature transmitter is set, in the heater of automobile, cooling-water temperature sensor is installed, autocontrol method comprises the steps:

Step 1, the aperture coefficient Core_Eff of controller to air door, the AC threshold value that air-conditioning is controlled automatically, the unlatching threshold value of compressor, compressor close threshold value, the interior cycle threshold of Air-conditioning Cycle, the outer circulation threshold value of Air-conditioning Cycle, the air quantity gear threshold value of air-conditioning, the air door pattern threshold value of air-conditioning and the aperture threshold value of air door initialize assignment, and read vehicle right and left both sides solar radiation intensity level L_Tsun and the R_Tsun that sunlight sensor detects, the air themperature value Tevap of the evaporimeter downstream ventilating opening that evaporator temperature sensor detects, the outer temperature value OutTemp of car that car outdoor temperature sensor detects, the coolant temperature value Twater of the heater that in the car that car indoor temperature transmitter detects, the temperature value L_Tcab of the left and right sides and R_Tcab and cooling-water temperature sensor detect,

Step 2, controller calculates principal parameter TD value and is:

TD=L_TD*H+R_TD*(1-H)

Wherein, H is left side parameter weighted value in car, 0<H<1, and in car, left and right sides principal parameter L_TD and R_TD are respectively:

L_TD=(A*(L_Tcab-25)+B*(OutTemp-25)+C*L_Tsun-D*(L_TempSet-25)+E)

R_TD=(A*(R_Tcab-25)+B*(OutTemp-25)+C*R_Tsun-D*(R_TempSet-25)+E)

Wherein, L_TempSet and R_TempSet are respectively left and right desired temperature in car, by left and right temperature adjustment knob, set, A, B, C, D and E are respectively vehicle interior temperature coefficient, the outer temperature coefficient of car, solar radiation coefficient, design temperature coefficient and supplementary parameter, the acquisition of A, B, C, D and E is the known technology of this area, can be demarcated and be drawn by actual measured results;

Step 3, controller comes accounting temperature throttle opening Parameter H i value to be according to TD value, Twater value and Tevap value:

Hi=Core_Eff*(25-Tevap-G_TD*TD)/(Twater-Tevap)

Wherein, TD value when G_TD is OutTemp=25,

$\mathrm{Twater}-\mathrm{Tevap}=\left\{\begin{array}{cc}20,& \mathrm{Twater}-\mathrm{Tevap}<20\\ \mathrm{Twater}-\mathrm{Tevap},& \mathrm{Twater}-\mathrm{Tevap}\&GreaterEqual;20\end{array}\right.;$

Step 4, controller carries out compressor of air conditioner control, the control of air-conditioning inner-outer circulation, air-conditioning air volume control, the control of air conditioner damper pattern and air-conditioner temperature airdoor control;

Step 5, automobile cuts out or during power-off, controller is preserved current normal state of a control.

Adopt the method step, first by controller, the parameters of system is initialized, and read the detected value of each sensor, according to these detected values, calculate principal parameter TD value and temperature damper aperture Parameter H i value again, and according to the magnitude relationship of TD value, Hi value and initialized each threshold value, realize compressor of air conditioner control, the control of air-conditioning inner-outer circulation, air-conditioning air volume control, the control of air conditioner damper pattern and air-conditioner temperature airdoor control, thereby realize the automatic control to car indoor environment temperature.

As shown in Figure 2, when realizing compressor control, first by controller, compared the size of TD value and AC threshold value, if TD value >AC threshold value, controller obtains AC request signal, again by controller comparison Tevap value and unlatching threshold value and the size of closing threshold value, if Tevap value >=open threshold value, controller is controlled and is opened compressor, if Tevap value≤close threshold value, controller is controlled close compressor, if close threshold value <Tevap value <, opens threshold value, and compressor keeps current state not change.

As shown in Figure 3, when realizing inner-outer circulation control, controller compares the size of TD value and interior cycle threshold and outer circulation threshold value, if TD value >=interior cycle threshold, controller is controlled air-conditioning and is carried out interior circulation, if TD value≤outer circulation threshold value, controller is controlled air-conditioning and carried out outer circulation, if cycle threshold in outer circulation threshold value <TD value <, air-conditioning keeps current recurrent state not change.

As shown in Figure 4, when realizing air quantity control, controller compares the size of TD value and each air quantity gear threshold value, the positive threshold value of air quantity gear comprises five grades of positive threshold values of air quantity, the positive threshold value of air quantity fourth gear, the positive threshold value of air quantity third gear, the positive threshold value of air quantity second gear and one grade of positive threshold value of air quantity, and air quantity gear negative threshold value comprises five grades of negative threshold values of air quantity, air quantity fourth gear negative threshold value, air quantity third gear negative threshold value, air quantity second gear negative threshold value and one grade of negative threshold value of air quantity.

When TD value > 0, if five grades of positive threshold values of TD value >=air quantity, the air quantity gear of controller setting air blast is five grades, if five grades of positive threshold values of the positive threshold value <TD value of air quantity fourth gear < air quantity, controller setting air blast keeps current air quantity gear not change, if the positive threshold value of TD value=air quantity fourth gear, the air quantity gear of controller setting air blast is fourth gear, if the positive threshold value of the positive threshold value <TD value of air quantity third gear < air quantity fourth gear, controller setting air blast keeps current air quantity gear not change, if the positive threshold value of TD value=air quantity third gear, the air quantity gear of controller setting air blast is third gear, if the positive threshold value of the positive threshold value <TD value of air quantity second gear < air quantity third gear, controller setting air blast keeps current air quantity gear not change, if the positive threshold value of TD value=air quantity second gear, the air quantity gear of controller setting air blast is second gear, if one grade of positive threshold value of positive threshold value <TD value < air quantity second gear of air quantity, controller setting air blast keeps current air quantity gear not change, if one grade of positive threshold value of TD value=air quantity, the air quantity gear of controller setting air blast is one grade, if one grade of positive threshold value of TD value < air quantity, controller cuts out air blast.

When TD value≤0, if five grades of negative threshold values of TD value≤air quantity, the air quantity gear of controller setting air blast is five grades, if five grades of negative threshold value <TD value < air quantity fourth gear negative threshold values of air quantity, controller setting air blast keeps current air quantity gear not change, if TD value=air quantity fourth gear negative threshold value, the air quantity gear of controller setting air blast is fourth gear, if air quantity fourth gear negative threshold value <TD value < air quantity third gear negative threshold value, controller setting air blast keeps current air quantity gear not change, if TD value=air quantity third gear negative threshold value, the air quantity gear of controller setting air blast is third gear, if air quantity third gear negative threshold value <TD value < air quantity second gear negative threshold value, controller setting air blast keeps current air quantity gear not change, if TD value=air quantity second gear negative threshold value, the air quantity gear of controller setting air blast is second gear, if one grade of negative threshold value of air quantity second gear negative threshold value <TD value < air quantity, controller setting air blast keeps current air quantity gear not change, if one grade of negative threshold value of TD value=air quantity, the air quantity gear of controller setting air blast is one grade, if one grade of negative threshold value of TD value > air quantity, controller cuts out air blast.

As shown in Figure 5, when realizing the control of air door pattern, first by controller, determine current air door pattern, the size of TD value and each air door pattern threshold value relatively again, air door pattern threshold value comprises that full blast road rises threshold value, full blast road falls threshold value, blows face threshold value and blows pin threshold value, when air door pattern is when blowing pin pattern, if TD value < blows face threshold value, keep blowing pin pattern and do not change, if TD value >=blow face threshold value, controller is set air door pattern for blowing face pattern; When air door pattern is when blowing face pattern, if TD value≤blow pin threshold value, controller is set air door pattern for blowing pin pattern, if blow pin threshold value < TD value < air channel, rise threshold value, keeping blowing face pattern does not change, if TD value >=full blast road rises threshold value, controller setting air door pattern is full air vent mode; When air door pattern is full air vent mode, if threshold value falls in TD value≤full blast road, controller is set air door pattern for blowing face pattern, if threshold value falls in TD value > full blast road, keeps full air vent mode not change.

As shown in Figure 6, when realizing temperature damper control, controller compares the size of Hi value and each throttle opening threshold value, throttle opening threshold value comprises air door threshold value one, air door threshold value two, air door threshold value three, air door threshold value four, air door threshold value five and air door threshold value six, if Hi value >=air door threshold value six, design temperature door opening ratio is that 100%(is standard-sized sheet), if air door threshold value five <Hi value < air door threshold values six, temperature damper aperture keeps current aperture state, if Hi value=air door threshold value five, design temperature door opening ratio is 90%, if air door threshold value four <Hi value < air door threshold values five, temperature damper aperture keeps previous aperture state, if Hi value=air door threshold value four, design temperature door opening ratio is 70%, if air door threshold value three <Hi value < air door threshold values four, temperature damper aperture keeps previous aperture state, if Hi value=air door threshold value three, design temperature throttle opening is 50%, if air door threshold value two <Hi value < air door threshold values three, temperature damper aperture keeps previous aperture state, if Hi value=air door threshold value two, design temperature door opening ratio is 30%, if air door threshold value one <Hi value < air door threshold value two, temperature damper aperture keeps previous aperture state, if Hi value=air door threshold value one, design temperature door opening ratio is 10%, if Hi value < air door threshold value one, design temperature air door is closed.

Controller is when carrying out temperature damper control, also utilize the mechanical angle sensor be arranged on air door place to read the opening value H0 of temperature damper, by the unlatching ratio of temperature damper opening value H0 monitor temperature air door of feedback, thereby realize the accurate control to temperature damper aperture.

Claims (3)

1. an air conditioning for automobiles autocontrol method, adopt controller automatically to control the air-conditioning system of automobile, it is characterized in that, at automobile, easily by sunlit place, sunlight sensor is set, evaporator outlet place at automobile arranges evaporator temperature sensor, and the front portion outside automobile arranges car outdoor temperature sensor, at car room, car indoor temperature transmitter is set, in the heater of automobile, cooling-water temperature sensor is installed, described autocontrol method comprises the steps:

Step 1, the aperture coefficient Core_Eff of controller to air door, the AC threshold value that air-conditioning is controlled automatically, the unlatching threshold value of compressor, compressor close threshold value, the interior cycle threshold of Air-conditioning Cycle, the outer circulation threshold value of Air-conditioning Cycle, the air quantity gear threshold value of air-conditioning, the air door pattern threshold value of air-conditioning and the aperture threshold value of air door initialize assignment, and read vehicle right and left both sides solar radiation intensity level L_Tsun and the R_Tsun that sunlight sensor detects, the air themperature value Tevap of the evaporimeter downstream ventilating opening that evaporator temperature sensor detects, the outer temperature value OutTemp of car that car outdoor temperature sensor detects, the coolant temperature value Twater of the heater that in the car that car indoor temperature transmitter detects, the temperature value L_Tcab of the left and right sides and R_Tcab and cooling-water temperature sensor detect,

Step 2, controller calculates principal parameter TD value and is:

TD=L_TD*H+R_TD*(1-H)

Wherein, H is left side parameter weighted value in car, 0<H<1, and in car, left and right sides principal parameter L_TD and R_TD are respectively:

L_TD=(A*(L_Tcab-25)+B*(OutTemp-25)+C*L_Tsun-D*(L_TempSet-25)+E)

R_TD=(A*(R_Tcab-25)+B*(OutTemp-25)+C*R_Tsun-D*(R_TempSet-25)+E)

Wherein, L_TempSet and R_TempSet are respectively left and right desired temperature in car, by left and right temperature adjustment knob, set, and A, B, C, D and E are respectively vehicle interior temperature coefficient, the outer temperature coefficient of car, solar radiation coefficient, design temperature coefficient and supplementary parameter;

Step 3, controller comes accounting temperature throttle opening Parameter H i value to be according to TD value, Twater value and Tevap value:

Hi=Core_Eff*(25-Tevap-G_TD*TD)/(Twater-Tevap)

Wherein, TD value when G_TD is OutTemp=25,

$\mathrm{Twater}-\mathrm{Tevap}=\left\{\begin{array}{cc}20,& \mathrm{Twater}-\mathrm{Tevap}<20\\ \mathrm{Twater}-\mathrm{Tevap},& \mathrm{Twaper}-\mathrm{Tevap}\&GreaterEqual;20\end{array}\right.;$

Step 4, controller carries out compressor of air conditioner control, the control of air-conditioning inner-outer circulation, air-conditioning air volume control, the control of air conditioner damper pattern and air-conditioner temperature airdoor control;

Described compressor of air conditioner is controlled the size that is first compared TD value and AC threshold value by controller, if TD value >AC threshold value, controller obtains AC request signal, again by controller comparison Tevap value and unlatching threshold value and the size of closing threshold value, if Tevap value >=open threshold value, controller is controlled and is opened compressor, if Tevap value≤close threshold value, controller is controlled close compressor, if close threshold value <Tevap value <, open threshold value, compressor keeps current state not change;

Described air-conditioning inner-outer circulation is controlled the size that is compared TD value and interior cycle threshold and outer circulation threshold value by controller, if TD value >=interior cycle threshold, controller is controlled air-conditioning and is carried out interior circulation, if TD value≤outer circulation threshold value, controller is controlled air-conditioning and is carried out outer circulation, if cycle threshold in outer circulation threshold value <TD value <, air-conditioning keeps current recurrent state not change;

Described air-conditioning air volume is controlled the size that is compared TD value and each air quantity gear threshold value by controller, when TD value > 0, if TD value is less than the minimum positive threshold value of air quantity gear, controller cuts out air blast, if TD value is greater than the maximum positive threshold value of air quantity gear, controller setting air quantity is maximum gear, if TD value equals the positive threshold value of certain air quantity gear, controller is set corresponding air quantity gear, if TD value between two positive threshold values of adjacent air quantity gear, keeps current air quantity gear constant; When TD value≤0, if TD value is less than minimum air quantity gear negative threshold value, controller setting air quantity is maximum gear, if TD value is greater than maximum air quantity gear negative threshold value, controller cuts out air blast, if TD value equals certain air quantity gear negative threshold value, controller is set corresponding air quantity gear, if TD value between two adjacent air quantity gear negative threshold values, keeps current air quantity gear constant;

Described air conditioner damper pattern is controlled and first by controller, is determined current air door pattern, compare again the size of TD value and each air door pattern threshold value, described air door pattern threshold value comprises that full blast road rises threshold value, full blast road falls threshold value, blows face threshold value and blows pin threshold value, when air door pattern is when blowing pin pattern, if TD value < blows face threshold value, keep blowing pin pattern and do not change, if TD value >=blow face threshold value, controller is set air door pattern for blowing face pattern; When air door pattern is when blowing face pattern, if TD value≤blow pin threshold value, controller is set air door pattern for blowing pin pattern, if blow pin threshold value < TD value < air channel, rise threshold value, keeping blowing face pattern does not change, if TD value >=full blast road rises threshold value, controller setting air door pattern is full air vent mode; When air door pattern is full air vent mode, if threshold value falls in TD value≤full blast road, controller is set air door pattern for blowing face pattern, if threshold value falls in TD value > full blast road, keeps full air vent mode not change;

Described air-conditioner temperature airdoor control is compared the size of Hi value and each throttle opening threshold value by controller, if Hi value is greater than maximum throttle opening threshold value, controller design temperature full trrottle, if Hi value is less than minimum throttle opening threshold value, controller design temperature air door is closed, if Hi value equals one of them throttle opening threshold value, controller design temperature air door is corresponding unlatching ratio, if Hi value is between two adjacent throttle opening threshold values, temperature damper keeps current unlatching ratio.

2. air conditioning for automobiles autocontrol method according to claim 1, is characterized in that, also comprises the steps:

Step 5, automobile cuts out or during power-off, controller is preserved current normal state of a control.

3. air conditioning for automobiles autocontrol method according to claim 1 and 2, is characterized in that, described step 1 middle controller has also read the temperature damper opening value H0 that mechanical angle sensor detects, for feeding back the unlatching ratio of Current Temperatures air door.

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