JP2500906Y2 - Mix door controller - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a control device for a mix door capable of accurately positioning a mix door of an air conditioner for a vehicle.

(Prior Art) Generally, there is a vehicle air conditioner called a so-called fully automatic air conditioner or an air conditioner for air conditioning the interior of an automobile, for example, as disclosed in Japanese Utility Model Laid-Open No. 63-170306. Such an air conditioner is provided with various kinds of occupants who input air-conditioning information about air conditioning in the vehicle detected by various sensors attached to various parts of the vehicle and operation switch units provided with various operation switches for air-conditioning control of the room. Optimum air conditioning of the vehicle interior is automatically performed by controlling various air conditioning members for air conditioning the vehicle interior based on the request.

In such an air conditioner, as shown in FIG. 5, the room temperature output by the room temperature setting device 2 provided in the operation switch unit and the air conditioning information detected by various sensors 1 such as an outside air sensor, an inside air sensor, and a solar radiation sensor. A target outlet temperature calculation unit 3 that calculates a target outlet temperature of the air that is blown into the vehicle interior based on the set temperature is provided.

The target outlet temperature calculator 3 outputs the calculated target outlet temperature to the controller 4.

The target outlet temperature calculation unit 3 and the control unit 4 are configured by a so-called microcomputer or the like, and the control unit 4 comprehensively controls the air conditioner.

Then, the control unit 4 drives various air conditioning members, specifically, intake door actuators (hereinafter referred to as INA) that drive the intake doors according to the input target outlet temperature.
5, a fan control device 6 that controls a fan motor that drives a fan, a mix door actuator (hereinafter referred to as MIA) 7 that drives a mix door, and a mode door actuator (hereinafter referred to as MOA) that drives various outlet mode doors. ) 8 respectively, and automatically air-conditions the passenger compartment according to the room temperature set temperature set by the occupant. Specifically, as the temperature inside the vehicle interior approaches the room temperature set temperature, the amount of air supplied to the vehicle interior is reduced or the temperature of the air is stabilized near the room temperature set temperature.

In such a conventional air conditioner, the mix door that adjusts the temperature of the air supplied to the vehicle interior is positioned at the target opening degree according to the target outlet temperature while being so-called feedback controlled. .

The control unit 4 calculates the target opening of the mix door according to the input target outlet temperature and outputs a signal for moving the mix door to this target opening to the MIA 7.

This MIA7 has an output shaft that is connected to the mix door at one end and connected to the internal drive motor at the other end via a reduction gear, and is also provided with a PBR that detects the rotation angle of the output shaft. Has been.

This PBR is a so-called variable resistor, forms a resistance value according to the rotation angle of the output shaft, and outputs a voltage according to this to the control unit 4. That is, this PBR
Is configured to convert the current opening degree of the mix door into a voltage and output the voltage to the control unit 4.

Accordingly, the control unit 4 compares the current opening degree of the mix door represented by the voltage output from the PBR with the calculated target opening degree, and performs feedback control for driving the drive motor until they match, The mix door is positioned at the calculated target opening.

However, in such an air conditioner, since the control unit 4 configured by the microcomputer centrally controls the various air conditioning members 5, 6, 7, and 8, the control unit 4 is According to the program of the preset control content, the various air conditioning members 5, 6, 7, 8 will be controlled in order according to the target outlet temperature, for example, when the mix door reaches the target opening degree. Nevertheless, when the control unit 4 is controlling other air conditioning members,
Indicates that the voltage corresponding to the current opening that matches the target opening is PB
There is a case where it cannot be recognized even though it is output from R. Then, in such a case, the mix door has passed the target opening degree and is not returned to the target opening degree by the control section 4 again after the control section 4 finishes controlling the other air conditioning members. It will cause hunting.

Therefore, in the conventional air conditioner, as shown in FIG. 2, a target opening range X having a predetermined opening width around the target opening is provided.
Is set in advance, and the control unit 4 ends the positioning of the mix door when the mix door is positioned within the target opening range X.

(Problems to be solved by the invention) However, in such a conventional air conditioner, the control unit 4 performs a large number of control contents in response to a recent demand for diversification of air conditioning control contents. If it becomes complicated, the program set in the control unit 4 becomes long, and the processing time required for the control unit 4 to process this becomes inevitably long. Therefore, in the positioning control of the mix door as described above, it is input by the PBR. The cycle for comparing the current opening of the mix door with the target opening becomes long.
Then, since the hunting of the mixed door may occur as described above, it is necessary to widen the opening range X according to the cycle in order to prevent this, but if the target opening range X is widened, However, since the positioning accuracy with respect to the original target opening becomes poor, there is a problem that the mix door cannot be accurately positioned at the target opening.

The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide a control device for a mix door capable of accurately positioning the mix door regardless of the contents of air conditioning control. And

[Structure of the Invention] (Means for Solving the Problem) In order to achieve the above-mentioned object, the present invention includes various sensors attached to various parts of a vehicle and a room temperature setting device for inputting a room temperature setting temperature required by an occupant. A target outlet temperature calculating means for calculating a target outlet temperature of the air blown into the passenger compartment based on the air conditioning information about the air conditioning in the passenger compartment detected by the various sensors and the room temperature set temperature input by the room temperature setting device. A target door for selecting the air intake destination, a fan for adjusting the amount of the air, a mix door for adjusting the temperature of the air, and a mode door for selecting the air outlet mode of the air. In an automotive air conditioner that sequentially controls based on temperature, a target opening calculation means that calculates a target opening of the mix door based on the target outlet temperature, and Based on the current opening detected by the current opening detection means for detecting the current opening of the X-door, the target opening calculated by the target opening calculation means and the current opening detection means, When the drive means for moving the mix door to the target opening and the opening difference between the target opening and the current opening is equal to or less than a predetermined opening amount, the current opening is the target opening. Positioning signal that outputs to the driving means a positioning signal that moves the mix door by the unit opening amount until it matches with, and determines whether the current opening matches the target opening for each movement. And output means.

(Operation) The present invention configured as described above operates as follows.

When the occupant operates the room temperature setter to set the room temperature set temperature, the target outlet temperature calculation means calculates the target outlet temperature based on the room temperature set temperature and the air-conditioning information detected by various sensors, and sets the target outlet temperature. Output to the degree calculation means.

Then, the target opening calculation means calculates the target opening degree of the mix door corresponding to this target outlet temperature, and outputs it to the drive means and the positioning signal output means.

The drive means moves the mix door toward the target opening based on the current opening of the mix door detected by the current opening detection means and the target opening thereof.

Further, the present opening degree detecting means detects the present opening degree of the mix door which changes thereby, and outputs this to the positioning signal output means.

The positioning signal output means outputs a positioning signal to the driving means when the opening difference between the target opening and the current opening becomes equal to or less than a preset predetermined opening amount.

Then, the driving means that has received this positioning signal moves the mix door by the unit opening amount until the current opening of the mix door detected by the current opening detecting means matches the target opening. Further, the drive means determines whether or not the current opening of the mix door matches the target opening every time the mix door is moved by the unit opening amount, and when the current opening matches the target opening, Stop the mix door.

As a result, the mix door is positioned at the target opening.

Therefore, the mix door is not positioned within a predetermined opening range centered on the target opening as in the past, but is moved to the target opening by moving by a unit opening amount immediately before the target opening. Therefore, it is accurately positioned at the target opening.

(Embodiment) Hereinafter, a control device for a mix door according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is a schematic configuration diagram of a control device for a mix door according to the present invention, and FIG. 2 is an explanatory diagram of an operation of a mix door driven by the control device for the mix door. 3 and 4 are operation flowcharts of the control device for the mix door according to the present invention. Incidentally, among the members shown in FIG. 1, the same members as those described in the conventional art are designated by the same reference numerals.

As shown in FIG. 1, the mixed door control device of the present invention is connected to various sensors 1 attached to various parts of the vehicle and a room temperature setting device 2 provided in the vehicle compartment, as in the conventional case. Air-conditioning information detected by 1 and room temperature setting device 2
The target blowout temperature calculating unit 3 is provided for calculating the target blowout temperature based on the room temperature set temperature output by.

The various sensors 1 are sensors such as an outside air sensor that detects the outside air temperature, an inside air sensor that detects the temperature inside the vehicle compartment, and a solar radiation sensor that detects the amount of solar radiation incident on the inside of the vehicle compartment. Various air conditioning information relating to the air conditioning in the vehicle interior is detected.

In addition, the room temperature setting device 2 is, as described in the related art,
It is provided in an operation switch unit (not shown) in the vehicle compartment, and is operated by the occupant to output the room temperature set temperature required by the occupant. This room temperature set temperature is specifically a temperature in the range of 18 to 32 ° C.

Then, the target outlet temperature calculation unit 3 sets the target outlet temperature as the target temperature of the air blown into the vehicle compartment based on the air conditioning information detected by the various sensors 1 and the room temperature set temperature output by the room temperature setter 2. It is supposed to be calculated. Note that the content of the target outlet temperature calculation unit 3 for calculating the target outlet temperature is the same as that generally performed in a conventional automobile air conditioner called a so-called full-auto air conditioner, so here, the description will be made. The description is omitted.

Then, the target outlet temperature calculation unit 3 outputs the calculated target outlet temperature to a general control unit 13 and a target opening degree calculation unit 10 described later.

The target opening calculation unit 10 is configured to calculate the target opening of the mix door based on the input target blowout temperature. In an automobile air conditioner, the temperature of the air supplied to the passenger compartment changes in proportion to the opening of the mix door, and the target opening calculation unit 10 corresponds to the input target outlet temperature. The target opening degree to be calculated is calculated by performing a predetermined calculation based on the proportional relationship. Then, the target opening degree calculation unit 10 outputs the calculated target opening degree to the drive unit 11 and a positioning signal output unit 15 described later.

The drive unit 11 operates the MIA 7 to move the mix door (not shown) to the target opening degree.

As the current opening detection means provided in MIA7
The PBR 14 is designed to output a voltage corresponding to the current opening of the mix door to the drive unit 11, and the drive unit 11 recognizes the current opening of the mix door by inputting this voltage. Is able to.

Then, the drive unit 11 supplies drive power to the drive motor 12 of the MIA 7 for moving the mix door (not shown) to the target opening at a predetermined moving speed based on the current opening and the input target opening. It is supposed to be supplied.

The operations of the target opening degree calculation unit 10 and the drive unit 11 are controlled by a general control unit 13 that comprehensively controls the air conditioner.

Based on the target outlet temperature calculated by the target outlet temperature calculator 3, the overall controller 13 sequentially controls other air-conditioning members (not shown), that is, the intake door, the fan, and the outlet mode, based on the target outlet temperature. In the middle of these controls, the target opening calculation unit 10 and the drive unit are
It is designed to operate 11. Incidentally, since the respective control contents are irrelevant to the present invention, description thereof will be omitted here.

Further, the PBR 14 of the MIA 7 also outputs a voltage corresponding to the current opening degree of the mix door to the positioning signal output unit 15.

The operation of the positioning signal output unit 15 is also controlled by the general control unit 13 like the target opening degree calculation unit 10 and the drive unit 11.

The positioning signal output unit 15 is the opening difference between the target opening calculated by the target opening calculation unit 10 and the current opening of the mix door indicated by the voltage input from the PBR 14, that is, the remaining opening up to the target opening. The opening amount is calculated.

Then, if the opening difference is not less than or equal to the predetermined opening amount E preset in the memory 16, the positioning signal output unit 15 outputs a positioning incompletion signal indicating that the mix door is not positioned at the target opening for the time being. When output to the general control unit 13 and the opening difference becomes equal to or less than the predetermined opening amount E,
A positioning signal for positioning the mix door at the target opening is output to the drive unit 11.

As shown in FIG. 2, the predetermined opening amount E is the opening amount immediately before the target opening A, and the time during which the mix door passes the opening amount E is controlled by the general control unit 13 for various air conditioning members.
It is set to be longer than the time required for 5,6,7,8 control, that is, one cycle of the air conditioning control, and the positioning signal output unit 15 can surely make a determination to output the positioning signal. The opening amount is set as described above. still,
The opening amount E can be arbitrarily set according to the processing time of the air conditioning control performed by the general control unit 13.

Then, the drive unit 11 which receives the positioning signal from the positioning signal output unit 15 drives the mix door to move toward the target opening amount by the unit opening amount F based on the current opening amount of the mix door detected by the PBR 14. Electric power is output to the drive motor 12, and the mix door is moved by the unit opening amount F.

The unit opening amount F is, for example, 1 °, and the drive unit 11
Is the minimum amount of opening that can move the mix door.

Further, the drive unit 11 determines whether or not the current opening of the mix door detected by the PBR 14 matches the target opening for each movement, and the unit opening amount of the mix door as described above until it matches. Move by F (1 °).

When the current opening and the target opening of the mix door match, the drive unit 11 stops the power supply to the drive motor 12 to position the mix door, and sends a positioning completion signal indicating this to the overall control unit 13. It is designed to output to. That is, when the drive signal is input with the positioning signal, the drive unit 11 moves the mix door by the unit opening amount F (1 °) until the current opening of the mix door detected by the PBR 14 matches the target opening. Has become.

The mix door control device of the present invention constructed as described above operates based on the flow charts shown in FIGS. 3 and 4.

First, as shown in FIG. 3, when an occupant operates the room temperature setter 2 to set the room temperature set temperature, the target outlet temperature calculation unit 3 displays the air conditioning information detected by the various sensors 1 and the room temperature set temperature. Based on this, the target outlet temperature is calculated, and this is output to the target opening degree calculator 10 and the general controller 13 (step 1).

Then, the general control unit 13 controls each of the INA5, the fan control device 6, the MIA7, and the MOA8 in this order based on the target outlet temperature, and air-conditions the vehicle interior according to the room temperature set temperature (steps 2 to 5). .

Next, how the mix door is controlled in step 4 will be described with reference to FIG.

When the general control unit 13 operates the target opening calculation unit 10, the target opening calculation unit 10 calculates the target opening A of the mix door based on the target blowout temperature, and the target opening A is calculated by the drive unit 11 and the positioning signal. Output to the output unit 15 (step 10).

Next, the overall control unit 13 operates the drive unit 11, so that the drive unit 11 is based on the current opening of the mix door input by the PBR 14 and the target opening input from the target opening calculation unit 10. The drive power is supplied to the drive motor 12 of the MIA 7, and the mix door is moved to its target opening A at a preset moving speed (step 11).

Then, the overall control unit 13 operates the positioning signal output unit 15 to cause the positioning signal output unit 15 to move to the PBR14.
The current opening C of the mix door is input by inputting the voltage output by. (Step 12).

Then, the positioning signal output unit 15 causes the target opening calculation unit 10 to
The current opening C of the mix door input by the PBR 14 is subtracted from the target opening A calculated by the above, and the remaining opening amount D up to the target opening is calculated (step 13).

Next, the positioning signal output unit 15 determines whether or not the opening amount D is equal to or less than a preset predetermined opening amount E. If the opening amount D is not equal to or less than the predetermined opening amount E, positioning is not performed. The completion signal is output to the general control unit 13 and the general control unit 13
Let the driver recognize that the mix door is not positioned at the target opening for the time being. The general control unit 13 that has received this positioning incompletion signal advances the processing to step 5 (step 1
Four).

On the other hand, when the opening amount D is equal to or smaller than the predetermined opening amount E, the positioning signal output unit 15 determines that the mix door has approached the target opening amount, outputs a positioning signal to the drive unit 11, and positions the mix door. (Step 15).

Then, the drive unit 11 that has received the positioning signal receives the PBR14
The current opening of the mix door detected by is input (step 16), and based on this current opening, drive power for moving the mix door toward the target opening by the unit opening amount F is applied to the drive motor 12. Output and move the mix door by the unit opening amount F. (Step 17).

The drive unit 11 determines whether or not the current opening of the mix door matches the target opening by the PBR 14, and if they do not match, the process returns to step 16 and the unit opening amount F Move one by one. (Step 18).

When the current opening and the target opening of the mix door match, the drive unit 11 stops the power supply to the drive motor 12 to position the mix door, and sends a positioning completion signal indicating this to the overall control unit 13. Output to. This makes the overall control unit
In step 13, the process proceeds to step 5 (step 19).

In this way, the mix door is not positioned within a predetermined opening range centered on the target opening as in the conventional case, but as shown in FIG. When it moves into E, it moves by the unit opening amount thereafter and is positioned at the target opening amount, that is, by moving by the unit opening amount immediately before the target opening position, the target opening position is reached. It will be positioned accurately at the opening.

Therefore, unlike the conventional case, the hunting is not caused by the air conditioning control contents, and even if the period for performing the positioning process of the mix door becomes long due to the complicated air conditioning control contents, the target of the mix door is targeted regardless of this. It becomes possible to accurately position the opening.

[Effects of the Invention] As is clear from the above description, the present invention has the following effects.

Since the mix door is positioned at the target opening by moving by the unit opening amount immediately before the target opening, there is no need for hunting due to the air conditioning control content as in the past, and the air conditioning control content However, even if the cycle for performing the positioning process of the mix door becomes long due to complication, the mix door can be accurately positioned at the target opening regardless of this.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a control device for a mix door according to the present invention, FIG. 2 is an explanatory view of the operation of a mix door driven by the control device for the mix door, and FIGS. 3 and 4 are the present invention. 5 is an operation flowchart of the control device for the mix door according to FIG. 1 ... Various sensors, 2 ... Room temperature setting device, 3 ... Target outlet temperature calculating unit (target outlet temperature calculating means), 5 ... Intake door actuator, 6 ... Fan control device, 7 ...
Mix door actuator (driving means), 8 ... Mode door actuator, 10 ... Target opening calculation section (target opening calculation means), 11 ... Driving section (driving means), 12 ... Drive motor (driving means) , 13 …… General control unit, 14 …… PBR
(Current opening detection means), 15 ... Positioning signal output section (positioning signal output means), 16 ... Memory, M ... Mix door.

Claims (1)

(57) [Scope of utility model registration request] 1. Various sensors (1) attached to various parts of a vehicle, a room temperature setting device (2) for inputting a room temperature set temperature required by an occupant, and an air conditioner in a vehicle compartment detected by the various sensors (1). Target air outlet temperature calculating means (3) for calculating a target air outlet temperature of air to be blown into the vehicle compartment on the basis of the air conditioning information regarding the air conditioner and the room temperature set temperature input by the room temperature setter (2). The intake door for selecting the introduction destination, the fan for adjusting the amount of the air, the mix door (M) for adjusting the temperature of the air, and the mode door for selecting the air outlet mode of the air to the target outlet temperature. In a vehicle air conditioner controlled based on the above, target opening calculation means (10) for calculating a target opening of the mix door (M) based on the target outlet temperature.
A current opening detecting means (14) for detecting the current opening of the mix door (M), and a target opening calculating means (10)
And the present opening degree detection means (14) calculated by
Drive means (7,11,1) for moving the mix door (M) to the target opening based on the current opening detected by
2) and, when the opening difference between the target opening and the current opening is less than or equal to a predetermined opening amount, the mix door (M) until the current opening matches the target opening. Positioning signal that outputs to the drive means (7,11,12) a positioning signal for moving the unit by the unit opening amount and determining for each movement whether the current opening matches the target opening. A control device for a mixed door, comprising: an output means (15).