JP3054305B2 - Control method of opening / closing body drive control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control method for driving and controlling an opening / closing body such as a power window device and an electric sunroof. The present invention relates to a control method of an opening / closing body drive control device having means for stopping or opening / closing an opening / closing body.

[0002]

2. Description of the Related Art For example, as a device for opening and closing an opening and closing body, there is a power window device for opening and closing a window glass of an automobile using a driving force of a motor as shown in FIG. By operating a switch disposed in the vehicle, an opening / closing operation signal is sent to the motor 3 via the control unit to operate. The motor 3 is engaged with a sector gear 13a of an X-shaped regulator 13 via a pinion (not shown) provided on its output shaft. Operates, and the window glass 12 moves up and down within the range of H1.

On the other hand, in such a power window device, the closing operation of the window glass 12 is performed by using rotation detecting means for detecting the rotation of the motor 3 or overcurrent detecting means for detecting an overcurrent flowing through the motor 3. There is known an anti-jamming structure in which a load at the time when a foreign object is jammed is detected, and the driving of the motor 3 in the closing direction is stopped or further reversely driven in accordance with the load.

[0004]

However, according to the above-described determination method, the influence between the X-shaped regulator and its rail or the window glass due to the influence of the surrounding environment or the like (for example, during freezing due to a temperature drop). Since the resistance between the and the weather strip increases, that is, even when the load increases, it is determined that a foreign object has been caught, and the motor is stopped or further driven in the reverse direction.
There was a problem that the window could not be closed by normal operation.

The present invention has been made in view of the above-mentioned problems of the prior art, and has as its main object the purpose of opening and closing the opening / closing body in accordance with the load state when the opening / closing body is closed. An object of the present invention is to provide a control method of an opening / closing body drive control device which can easily perform a closing operation when a load on an actuator is merely increased due to an influence of a surrounding environment or the like. .

[0006]

SUMMARY OF THE INVENTION According to the present invention, there is provided an actuator for driving an opening and closing body in an opening direction and a closing direction, a switch for opening and closing the opening and closing operation, and the actuator. Load detection means for detecting the load of, a means for comparing a certain threshold value and a load generated in the actuator at the time of closing the opening and closing body,
Control means for controlling the opening / closing body to stop or open when it is determined that a load higher than the threshold is applied to the actuator during the closing operation of the opening / closing body. a is a process in which a load greater than the threshold value stops or opening operation force the said opening and closing member Once generated to the actuator in case of closing operation of the opening and closing member by operating the switch, than the threshold value Note the position of the switch with high load.
Remembering the process and re-operating the operation switch to open and close the
When closing the body, a high load is
Setting the threshold value to a value higher than the current threshold value when the actuator generates the actuator .

[0007]

When closing the opening / closing member, the threshold value is compared with the load on the actuator. If the load on the actuator is large, the opening / closing member is stopped or further opened. And
Next, when the closing operation is performed by the user's switch operation,
It is conceivable that the foreign matter has been removed, or that the foreign matter has not been sandwiched from the beginning, or that the user has not noticed the foreign matter. Close. In addition, when the foreign object is not noticed, the user can be alerted by stopping the opening / closing body or driving the opening further as described above even if the threshold value is increased. Furthermore, when the foreign matter is not sandwiched from the beginning, the load is merely increased due to the influence of the surrounding environment and the like.
There is no need to stop the rotating body unnecessarily in the open state. In addition
The open / close position where the load on the actuator has increased.
Remember that the other opening and closing positions of the
It is possible to determine the load of the actuator with a constant threshold
It is also possible to detect load such as pinching of foreign objects at the same time.
You. Incidentally, unless reset the threshold to an initial value when the opening-and-closing member is fully closed, is effective for increased load steady actuators such as deterioration of the weather strip, the initial threshold if the closing member is fully closed Resetting to a value is effective against temporary freezing in cold regions.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a preferred embodiment of the present invention.

FIG. 1 is a schematic circuit diagram showing a control unit of a power window device to which the present invention is applied. As described above, the control unit responds to a signal sent to the control unit by operating a switch. 2 supplies power to the motor 3 to cause the vehicle window glass 12 shown in FIG. 2 to open and close.

As shown in FIG. 1, each input terminal I of a main control circuit 1 comprising a CPU as an opening / closing operation control means.
Opening / closing operation signals from the window glass closing operation switch 2a and the window glass opening operation switch 2b of the switch group 2 are respectively input to I and I2.

A positive terminal of the motor 3 is connected to a relay Ry1 for closing the window glass, and a negative terminal is connected to a relay Ry2 for opening the window glass.
These relays Ry1 and Ry2 are connected to the transistors Tr1 and O2 connected to the output terminals O1 and O2 of the main control circuit 1, respectively.
1. On / off control is performed via Tr2.

Two Hall ICs for detecting the position of the rotor are provided on the inner wall of the stator (not shown) in the motor 3.
4 and 5 are sequentially arranged with a phase difference of 90 degrees in the normal rotation direction (clockwise) of the rotor. The output line from the first Hall IC 4 is connected to the motor rotation pulse conversion circuit 6 and the input terminal I4 of the main control circuit 1. The output line from the second Hall IC 5 is connected to the motor rotation pulse conversion circuit 6 and the input terminal I5 of the main control circuit 1.

In the motor rotation pulse conversion circuit 6, exclusive OR circuits EXOR1, EXOR2, EXOR3 and the like are connected. Outputs from both Hall ICs 4 and 5 are connected to each input terminal of the exclusive OR circuit EXOR1. Output terminal of exclusive OR circuit EXOR1 and GN
A resistor R1 and a capacitor C1 are connected to the node D via a node A, and a node B between the resistor R1 and the capacitor C1 is connected to one input terminal of an exclusive OR circuit EXOR2. . Exclusive OR circuit EXOR2
Is connected to the ground, and the output terminal of the exclusive OR circuit EXOR2 is connected to one input terminal of the exclusive OR circuit EXOR3 via the node C.
The other input terminal of the exclusive OR circuit EXOR3 is connected to the node A. Node B is connected to capacitor C
2 is connected to the node C. The output terminal of the exclusive OR circuit EXOR3 is connected to the input terminal I of the main control circuit 1.
3 is connected.

Next, the operation of the control unit of the power window device having the above configuration will be described. Each switch 2a,
By operating 2b, the power supply voltage is supplied to the motor 3, and the window glass 12 opens and closes. For example, when the user wants to close the window glass 12, the switch 2
Close a. Then, a closing operation signal is supplied to the input terminal I1 of the main control circuit 1, and in response to this signal, an ON signal is sent from the output terminal O1 of the main control circuit 1 to the relay Ry1. As a result, a current line from the power supply to the GND via the + terminal and the-terminal of the motor 3 is formed, so that the motor 3 rotates clockwise (this rotation direction is normal rotation), and the window glass 12 is closed. Make it work.

To open the window glass 12, the switch 2b is closed. Then, an ON signal is output from the output terminal O2 of the main control circuit 1 to the relay Ry2, and the power supply passes through the negative terminal and the positive terminal of the motor 3 to GND.
Is formed, the motor 3 rotates counterclockwise (this rotation direction is reversed), and the window glass 12 is opened.

Here, from the two Hall ICs 4, 5,
A signal indicating the rotational position of the rotor is output. This output signal is shown in FIG. 3 (a) and (b). 1st hall I
C4 outputs a signal that periodically switches between high and low as shown in FIG. Also, the first
The phase of the output signal from the first Hall IC 4 is delayed by 90 degrees from the second Hall IC 5 disposed clockwise from the Hall IC 4 with a phase angle of 90 degrees, and the periodicity as shown in FIG. A signal that switches between high and low is output.

The two-system signals from the two Hall ICs 4 and 5 are always supplied to the respective input terminals of the exclusive OR circuit EXOR1 in the motor rotation pulse conversion circuit 6. These signals are converted by the motor rotation pulse conversion circuit 6 into motor rotation pulses as shown in FIG. 3C and output from the output terminal of the exclusive OR circuit EXOR3. The motor rotation pulse is input from the input terminal I3 to the main control circuit 1 as a rotation load of the motor, and is used to determine the entrapment of foreign matter.

The signals of the two systems from the two Hall ICs 4 and 5 do not pass through the motor rotation pulse conversion circuit 6 as described above, but are directly input to the main control circuit 1 from the input terminals I4 and I5. Is done. The signals of the two systems from the Hall ICs 4 and 5 have a phase difference of 90 degrees from each other, from which the direction of rotation of the motor 3, that is, the direction of opening and closing of the window glass 12, can be identified.

Next, the operation of the power window device having the above-described structure for judging the jamming and preventing jamming will be described with reference to the flowchart of FIG. First, in step 1, a threshold value S described later is set to an initial value S0, 0 is substituted for a flag F, and in steps 2 and 3, a rotation cycle or rotation speed obtained from the motor rotation pulse during the closing operation (see FIG. 3), that is, the rotational load W of the motor is equal to the initially set threshold value S.
It is determined whether or not it has increased beyond 0, and if it has increased, the process proceeds to step 4. At this time, the rotation period or the rotation speed may be obtained from, for example, a moving average every four periods, in consideration of the influence of the rotation period or the rotation speed variation due to a measurement error or the like.

Here, it is determined that the foreign matter is caught, the closing operation is stopped, and the opening operation is further performed when the gap between the upper end of the window glass 12 and the window frame 14 shown in FIG. (Between 4 mm and 200 mm). The detection of the position of the window glass 12 is performed by counting motor rotation pulses. That is, since the moving distance per pulse is predetermined, the position of the window glass 12 is determined by using the fully closed position as the origin, adding the number of pulses during the opening operation, and subtracting the number of pulses during the closing operation. I do. It goes without saying that the fully open position may be set as the origin.

In step 4, it is determined whether or not the load change is the first time since the window glass 12 was fully closed last time.
That is, it is determined whether or not the flag F is 0. If this is the first time, the position where the load has changed is stored in steps 5 to 7, the closing operation is stopped, the opening operation is further performed, and 1 is substituted into the flag F. And return to step 2.

On the other hand, at step 3, the rotational load W of the motor
Is smaller than the initially set threshold value S0,
To determine whether or not the window glass 12 is fully closed. If the window glass 12 is fully closed, the process returns to step 1 to set the threshold value S to the initial value S0, substitute 0 for the flag F, and return to the initial state. Let it.

In step 4, if the load change is not the first time since the window glass 12 was completely closed last time, that is, if the flag F is 1, the routine proceeds to step 9, where the rotational load W of the motor is set to the threshold value S (initially S = S0), it is determined whether or not the load change has occurred at the same position as the previous time in step 10, and if it is different, it is determined that the cause of occurrence is different. Then step 5
At 7, the position where the load is changed is stored, the closing operation is stopped, the opening operation is further performed, 1 is substituted for the flag F, and the process returns to step 2.

If it is determined in step 10 that the load change has occurred at the same position as the previous time, a value obtained by adding a predetermined value α to the threshold value S is set in step 11 and a new threshold value S is set in step 12. It is determined whether the rotational load W of the motor has increased beyond the new threshold value S. If the rotational load W has increased, the position where the load has changed is stored in steps 5 to 7 and the closing operation is stopped. Operate, substitute 1 for flag F, and return to step 2.

However, if the rotational load W of the motor has not increased in step 12 beyond the new threshold value S, it is determined that the load has merely increased due to the surrounding environment or the like, and the closing operation is performed. And returns to step 2. Thereafter, steps 2 to 4, step 9, and step 13 are repeated. When the window glass 12 is fully closed, the process returns to step 1.

Therefore, the window glass 12 is opened after the window glass 12 is fully closed, and when the rotation load W of the motor is equal to or less than the initially set threshold value S0 during the closing operation, the steps 2 to 4 are repeated. When the rotational load W of the motor is larger than the initially set threshold value S = S0, first, steps 2 to 7 are performed to perform the opening operation. If W> S0 at the same position for the second time, step S7 is performed. Steps 2 to 4 and steps 9 to 12 are performed, and the threshold value S is set higher by a predetermined value α. If W <S, then steps 2 to 4,
Steps 9 and 13 are repeated until fully closed. Further, if W> S still holds, steps 2 to 7 are performed again to perform the opening operation. If W> S also holds at the same position for the third time, steps 2 to 4 and steps 9 to 12 are performed, and the threshold value S is set. It is set higher by a predetermined value α. If W <S, then steps 2 to 4, steps 9 and 13 are repeated until fully closed. In this way, by gradually increasing the threshold value S after the third and fourth times, it is possible to forcibly perform the closing operation when the load finally increases simply due to the influence of the surrounding environment or the like.

Here, for example, if the value of the predetermined value α is set so that the threshold value S is greatly increased at the second time, the window glass 12 can be forcibly completely closed without repeating the opening and closing operations. If the threshold value is not returned to the initial value at the fully closed position, it is effective as a provisional measure against a steady increase in the load on the actuator such as deterioration of the weather strip.

In this embodiment, an opening / closing control method of a device for opening / closing the side window glass 12 of an automobile has been described. However, the present invention is not limited to this. Can be applied to

[0029]

As is apparent from the above description, according to the control method of the opening / closing body drive control device of the present invention, when closing the opening / closing body, first, the threshold value and the load of the actuator are compared, If the load is large, the switch is stopped or further opened. Then, when the closing operation is performed by the user's operation next time, the load in the previous
If the load increases again at the specified position, the threshold is increased to a certain degree, and even if the load on the actuator increases to a certain degree, it is possible to continue the closing drive as it is. In this case, the opening / closing body can be closed without performing a complicated operation when the load on the actuator is merely increased due to the influence of the surrounding environment or the like, and the handling property is improved. . At other open / close positions of the opening / closing body, a normal threshold value is set.
The load on the actuator can be determined by
Load can be detected at the same time.
High-precision load detection and switch control without loss
Will be possible.

[Brief description of the drawings]

FIG. 1 is a schematic circuit diagram of a control unit of a power window device to which the present invention has been applied.

FIG. 2 is a side view showing a schematic configuration of the power window device.

FIG. 3 is a waveform diagram showing a signal output from a Hall IC and a corresponding motor rotation pulse.

FIG. 4 is a flowchart illustrating a control method according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 main control circuit 2 switch group 2a closing operation switch 2b opening operation switch 3 motor 4 first hall IC 5 second hall IC 6 motor rotation pulse conversion circuit 11 door 12 window glass 13 X-shaped regulator 13a sector gear 14 window frame

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-64982 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) E05F 15/00-15/20

Claims (2)

(57) [Claims] 1. An actuator for driving an opening / closing body in an opening direction and a closing direction, a switch for opening / closing the opening / closing body, a load detecting means for detecting a load on the actuator, and a threshold value. Means for comparing the load generated in the actuator with the load generated in the actuator during the closing operation of the opening / closing body, and when the load higher than the threshold value is determined to be generated in the actuator during the closing operation of the opening / closing body, the opening / closing body is stopped or A control method for an opening / closing body drive control device having control means for controlling to open the opening / closing body, wherein a load higher than the threshold is applied to the actuator when the opening / closing body is closed by operating the switch. Then, the process of forcibly stopping or opening the opening / closing body and the position of the opening / closing body having a load higher than the threshold value are stored.
And processes that, by closing operation of the opening and closing member to reengineer the operation switch
When the actuator is in the same position as the previous
The method of opening and closing driving control device characterized by having a process of setting the threshold Once occurred data to a value higher than the current threshold. 2. The method according to claim 1, further comprising setting the threshold value to an initial value at a fully closed position of the opening / closing body.