JP2003253957A - Opening/closing member controller and positional displacement prevention method of opening/closing member in the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an opening/closing member controller constituted to detect the opening/closing position of an opening/closing member on the basis of a count value obtained by a counting action based on rotation of a driving motor, in which when the power source voltage fluctuates during the actuation of the driving motor, a displacement, which is caused by the voltage fluctuation, between the opening/closing position of the opening/closing member and the count value is prevented. <P>SOLUTION: The controller 13 stores a count value in a RAM 13a at every time when the count value to detect the opening/closing position of a roof glass varies. The controller 13 judges whether or not the count value is correctly stored in the RAM 13a, when a supplied driving electric source +B becomes lower than a specified voltage and is again restored again. If the driving motor 5 is operating just before the driving voltage +B becomes lower than the specified voltage, even if the judgement that the count value is correctly stored is made, a displacement between the roof glass and the count value is judged to be possible. The original point is reset by the controller 13 after the judgement. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening / closing control device for controlling opening / closing of an opening / closing member such as a roof glass of an automobile, and a method for preventing positional deviation of the opening / closing member in the opening / closing member control device.

[0002]

2. Description of the Related Art Sunroof devices installed in automobiles are
Conventionally, various types have been proposed which are configured to detect the opening / closing position of the roof glass by detecting the rotation cycle of a drive motor for opening / closing the roof glass. Such a sunroof device is provided with, for example, a rotation sensor that outputs a pulse signal corresponding to the rotation of the drive motor. The control device that controls the sunroof device counts the rising or falling of the pulse signal output from the rotation sensor, detects the open / closed position of the roof glass based on the count value, and performs control according to the open / closed position. I am supposed to do it.

As described above, the count value for detecting the opening / closing position of the roof glass is RA provided in the control device.
It is stored in M (Random Access Memory). The count value is rewritten each time the value changes.

Here, as is well known, the RAM is a volatile storage device in which data is lost unless power is supplied. Therefore, for example, when the power supply voltage supplied to the control device becomes equal to or lower than the predetermined voltage value and returns (to the predetermined voltage) again, it is considered that the data (count value) stored in the RAM may be lost, and It is configured to check whether the stored data (count value) is normally stored.

[0005]

By the way, for example, when the roof glass is operated while the engine of the automobile is not started and the engine starter motor is operated to start the engine during the operation, the control device There is a case where the power supply voltage supplied to the power source drops significantly for a moment and falls below the predetermined voltage value. In such a case, since the power supply voltage drops for a moment, the data stored in the RAM is not erased, and when the RAM check is performed, it is determined that the data (count value) is normally stored. .

However, when the power supply voltage drops,
There are cases in which the pulse signal from the rotation sensor has an abnormal waveform and cannot be counted, the pulse signal cannot be counted even if the waveform of the pulse signal is normal, and writing to the RAM cannot be performed. In such a case, the count value in the RAM does not change even though the actual roof glass is moving, so there is a gap between the actual open / close position of the roof glass and the count value, which is a control problem. There was a problem that.

The present invention has been made to solve the above problems, and its purpose is to perform a counting operation based on the rotation of a drive motor and detect the open / closed position of an opening / closing member based on the count value. An opening / closing member control device configured to prevent the deviation between the opening / closing position of the opening / closing member and the count value caused by the fluctuation of the power supply voltage during the operation of the drive motor. (EN) A member control device and a method for preventing positional deviation of an opening / closing member in the opening / closing member control device.

[0008]

In order to solve the above problems, the invention as set forth in claim 1 performs a counting operation based on the drive motor for opening and closing the opening and closing member and the rotation of the drive motor, and the counting. Position detection means for detecting the opening / closing position of the opening / closing member based on the value, opening / closing control means for performing opening / closing control according to the opening / closing position of the opening / closing member detected by the position detecting means, and a degree for changing the count value. And a determination unit that determines whether or not the count value is normally stored in the storage device when the supplied driving power source becomes equal to or lower than a predetermined voltage value and returns again. In the opening / closing member control device, even if it is determined that the count value is normally stored in the motor state detection unit that determines whether the drive motor is operating, and the determination unit, If the motor state detecting means detects that the drive motor is operating immediately before the drive power source becomes equal to or lower than a predetermined voltage value, a deviation may occur between the opening / closing member and the count value. There is provided a position shift judging means for judging that there is.

According to a second aspect of the present invention, a drive motor that opens and closes the opening / closing member, and a position detection that counts based on the rotation of the driving motor and detects the open / closed position of the opening / closing member based on the count value. Means, an opening / closing control means for performing opening / closing control according to the opening / closing position of the opening / closing member detected by the position detecting means, a storage device for storing the count value, and the supplied driving power supply is equal to or less than a predetermined voltage value. When returning again, a determining unit that determines whether the count value is normally stored in the storage device,
An opening / closing member control device comprising: a motor state detecting unit that determines whether or not the drive motor is operating, and the determining unit determines that the count value is normally stored. Immediately before the drive power source becomes equal to or lower than a predetermined voltage value, if the motor state detecting means detects that the drive motor is in operation, there is a possibility that a deviation occurs between the opening / closing member and the count value. It is determined that there is such a position, the origin position for setting the count value to the predetermined count value is set in the state where the opening / closing member is arranged at the predetermined position, and the position deviation prevention means for preventing the deviation is provided.

According to a third aspect of the present invention, in the opening / closing member control device according to the second aspect, there is a possibility that the position deviation prevention means has a deviation between the opening / closing member and the count value. Immediately after it is determined that the opening / closing member is arranged at the predetermined position, the origin position for setting the count value to the predetermined count value is set.

The invention according to claim 4 is the invention according to claim 2 or 3.
In the opening / closing member control device described in (1), the position deviation prevention means sets the origin position for setting the count value to a predetermined count value when the opening / closing member is arranged at the mechanical limit position on the fully closed side. .

According to a fifth aspect of the present invention, in the opening / closing member control device according to any one of the first to fourth aspects, the drive motor is supplied with drive power through a relay, The motor state detecting means detects the operating state of the drive motor based on the on / off state of the relay.

According to a sixth aspect of the present invention, the counting operation is performed based on the rotation of the drive motor that opens and closes the opening / closing member, the opening / closing position of the opening / closing member is detected based on the count value, and the opening / closing position is determined according to the opening / closing position. The storage device is configured to perform opening / closing control, and the count value is stored in the storage device each time the count value changes, and the count value is normally stored in the storage device when the supplied driving power becomes equal to or lower than a predetermined voltage value and is restored again. A method for preventing positional deviation of the opening / closing member in the opening / closing member control device configured to determine whether the count value is normally stored in the determination, If the drive motor is operating immediately before the drive power source becomes equal to or lower than a predetermined voltage value, it is determined that there may be a deviation between the opening / closing member and the count value. It was.

According to a seventh aspect of the present invention, the counting operation is performed based on the rotation of the drive motor that opens and closes the opening / closing member, the opening / closing position of the opening / closing member is detected based on the count value, and the opening / closing position is detected. It is configured to perform opening / closing control, and the count value is stored in a storage device,
Preventing displacement of the opening / closing member in the opening / closing member control device configured to determine whether or not the count value is normally stored in the storage device when the supplied driving power falls below a predetermined voltage value and returns again. In the method, even if it is determined that the count value is normally stored in the determination, if the drive motor is operating immediately before the drive power source becomes equal to or less than a predetermined voltage value, the opening / closing is performed. It is determined that a deviation may occur between the member and the count value, and the origin position is set to set the count value to the predetermined count value with the opening / closing member arranged at the predetermined position, I tried to prevent the gap.

According to an eighth aspect of the present invention, in the method for preventing the positional deviation of the opening / closing member in the opening / closing member control device according to the seventh aspect, there is a possibility that a deviation occurs between the opening / closing member and the count value. When the opening / closing member is placed at the predetermined position immediately after it is determined that there is such a position, the origin position for setting the count value to the predetermined count value is set.

The invention according to claim 9 is the invention according to claim 7 or 8.
In the method for preventing the positional deviation of the opening / closing member in the opening / closing member control device described in 1, when the opening / closing member is arranged at the mechanical limit position on the fully closed side, setting of the origin position for setting the count value to a predetermined count value is performed. To do.

The invention described in claim 10 is the invention according to claims 6 to 9.
In the method for preventing displacement of the opening / closing member in the opening / closing member control device according to any one of items 1 to 5,
The drive power is supplied through the relay, and the operating state of the drive motor is detected by the on / off state of the relay.

(Operation) According to the invention described in claims 1 and 6, the opening / closing member control device stores the data in the storage device each time the count value for detecting the opening / closing position of the opening / closing member changes, and supplies it. When the driving power supply to be operated falls below a predetermined voltage value and returns (to a predetermined voltage) again, it is configured to determine whether or not the count value is normally stored in the storage device. Even if it is determined that the count value is normally stored in the determination, if the drive motor that opens and closes the opening and closing member is operating immediately before the drive power supply becomes equal to or lower than the predetermined voltage value, the opening and closing is performed. It is determined that a deviation may have occurred between the member and the count value. In other words, when the drive power supply voltage falls below the predetermined voltage value, the count operation may not be performed normally, or the count value may not be written to the storage device. Therefore, the drive motor may be operating at that time. The count value in the storage device does not change despite the movement of the opening / closing member. for that reason,
A gap may occur between the open / close position of the open / close member and the count value. Therefore, in such a case, for example, if the origin position for setting the count value to the predetermined count value is set in a state where the open / close member is arranged at the predetermined position, the open / close position of the open / close member and the count value are Displacement can be prevented.

According to the second and seventh aspects of the present invention, the opening / closing member control device is driven and stored in the storage device every time the count value for detecting the opening / closing position of the opening / closing member changes. It is configured to determine whether or not the count value is normally stored in the storage device when the power supply becomes equal to or lower than the predetermined voltage value and returns (to the predetermined voltage) again. Even if it is determined that the count value is normally stored in the determination, if the drive motor that opens and closes the opening and closing member is operating immediately before the drive power supply becomes equal to or lower than the predetermined voltage value, the opening and closing is performed. It is determined that a deviation may have occurred between the member and the count value, and the origin position for setting the count value to the predetermined count value is set with the opening / closing member arranged at the predetermined position. In other words, when the drive power supply voltage falls below the predetermined voltage value, the count operation may not be performed normally, or the count value may not be written to the storage device. Therefore, the drive motor may be operating at that time. The count value in the storage device does not change despite the movement of the opening / closing member. Therefore, a shift may occur between the open / close position of the open / close member and the count value. Therefore, since the origin position of the opening / closing member is set in consideration of such a case, it is possible to prevent the difference between the opening / closing position of the opening / closing member and the count value.

According to the third and eighth aspects of the present invention, when the opening / closing member is arranged at the predetermined position immediately after it is determined that there is a possibility that a deviation has occurred between the opening / closing member and the count value,
The origin position is set to set the count value to a predetermined count value. That is, since the origin position is set immediately after it is determined that the deviation may have occurred, the deviation can be prevented early.

According to the invention described in claims 4 and 9, the origin position is set such that the count value is set to the predetermined count value in a state where the opening / closing member is arranged at the mechanical limit position on the fully closed side. Done in. Therefore, the origin position can be easily set.

According to the fifth and tenth aspects of the present invention, the driving power is supplied to the driving motor via the relay, and the operating state of the driving motor is detected by the ON / OFF state of the relay. Therefore, the operating state of the motor can be easily detected.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION (First Embodiment) A first embodiment in which the present invention is embodied in a sunroof device equipped on an automobile will be described below with reference to the drawings.

FIG. 7 is a perspective view of an essential part of an automobile equipped with a sunroof device, in which a roof glass 4 serving as an opening / closing member for a skylight 3 formed on a roof panel 2 of the automobile 1.
Is provided. The roof glass 4 is provided so as to be capable of reciprocating sliding movement in the front-rear direction (sliding opening / closing operation), and vertically movable (tilt opening / closing operation) at the front end thereof with the vehicle width direction as a fulcrum. And roof glass 4
7 is opened and closed via a drive transmission mechanism (not shown) based on the drive of the drive motor 5 shown by the broken line in FIG.
The drive motor 5 constitutes a drive unit 10 together with a control device 11 which will be described later and controls the drive of the motor 5. The drive unit 10 is arranged between the roof panel 2 in front of the skylight 3 and a molded ceiling panel (not shown) on the indoor side.

The roof glass 4 of this embodiment is shown in FIG.
As shown in FIG. 4, mainly, the fully closed position, the tilt fully open position (the position where the rear end of the roof glass 4 is raised to the outdoor side from the fully closed position), the pseudo fully closed position, and the flap down position (from the fully closed position) It has a position where the rear end of the roof glass 4 descends to the inside of the room) and a slide fully open position. And
In the present embodiment, the slide opening operation (S / O operation in FIG. 2) means that the roof glass 4 is opened in the order of the fully closed position, the tilt fully open position, the pseudo fully closed position, the flap down position, and the slide fully open position. The reverse operation is referred to as a slide closing operation (S / C operation in FIG. 2). This slide opening / closing operation is performed by a slide opening / closing switch SW2, which will be described later.
This is performed by operating each SW3. Further, the operation of opening the roof glass 4 from the fully closed position to the tilt fully opened position is referred to as a tilt opening operation (T / U operation in FIG. 2),
This reverse operation is called tilt close operation (T / D operation in FIG. 2). This tilt opening / closing operation is performed by operating tilt opening / closing switches SW4 and SW5 described later.

FIG. 1 is an electric block diagram for explaining the electrical construction of the sunroof device for driving and controlling the drive motor 5. A control device 11 for driving and controlling the drive motor 5 is connected to a battery (not shown), and the control device 11 is connected to the drive power source + B (in this embodiment, 12
[V]) is supplied. The drive power source + B is the control device 11
The power supply circuit 12 adjusts the power supply voltage to a predetermined power supply voltage, and controls the position detecting unit, the opening / closing control unit, the determining unit, the motor state detecting unit, the position shift determining unit, and the position shift preventing unit. Supplied.

The control device 11 is connected to an ignition switch SW1. Ignition switch SW1
Is connected to the control unit 13 via the input circuit 14 in the control device 11. Ignition switch SW1
Is operated, an operation signal (ON signal) is input to the input circuit 14
To the control unit 13 via. The controller 13 operates based on the drive power supply + B supplied via the power supply circuit 12 based on the ON signal of the ignition switch SW1.

Further, the control device 11 has various switches SW2 to S operated to open and close the roof glass 4.
W5, that is, the slide opening switch SW2, the slide closing switch SW3, the tilt opening switch SW4, and the tilt closing switch SW5 are respectively connected. Various switches SW
2 to SW5 are connected to the control unit 13 via the input circuit 14 in the control device 11. Various switches SW2
When operated, the SW 5 outputs a command signal (in this embodiment, an L level (ground level) ON signal) to the control unit 13 via the input circuit 14.

A reference clock signal required for the operation of the control unit 13 is input to the control unit 13 from the clock oscillation circuit 15. Further, the control unit 13 supplies the drive power source + B to the drive motor 5 through the drive circuit 17 to supply the drive power + B.
Control. The drive circuit 17 includes first and second relays 17a and 17b. Each relay 17a, 17
b supplies or stops the drive power supply + B to the drive motor 5 to rotate or stop the motor 5 forward or backward.

That is, in the control unit 13 of this embodiment, even if the slide opening switch SW2 is once operated, that is, an ON signal is once input from the switch SW2, an OFF signal is then input from the switch SW2. Roof glass 4
The first relay 17a is turned on to drive the drive motor 5 in order from the fully closed position to the tilt fully open position, the pseudo fully closed position, the flap down position, and the slide fully open position in order. + B is supplied to drive the motor 5. Then, when it is detected that the roof glass 4 is placed at the slide fully open position by detecting the opening / closing position of the roof glass 4 described later, the control unit 13 turns off the first relay 17a to turn the drive motor 5 on. The drive power source + B is stopped to stop the operation of the roof glass 4.

On the other hand, when the slide closing switch SW3 is once operated, that is, the ON signal is once input from the switch SW3, the control unit 13 controls the roof glass 4 even if the OFF signal is subsequently input from the switch SW3. The second relay 17b is turned on to supply the drive power source + B to the drive motor 5 to drive the motor 5 in the reverse order from the slide fully open position to the fully closed position (automatic closing operation) at once. Then, the control unit 13 controls the roof glass 4 described later.
When it is detected that the roof glass 4 is placed in the fully closed position by detecting the open / close position of the second relay 17b, the second relay 17b is turned off and the drive power source + B to the drive motor 5 is stopped.
The operation of the roof glass 4 is stopped.

Further, while the roof glass 4 is automatically operating as described above, the slide opening / closing switch SW is
When one of SW2 and SW3 is operated, the control unit 13
The drive power supply + B to the drive motor 5 is stopped, and the operation of the roof glass 4 is stopped. Then, when the slide opening / closing switches SW2 and SW3 are operated again, the control unit 13 supplies the drive power source + B to the drive motor 5 so that the roof glass 4 is operated at once from the position where the roof glass 4 is stopped to the slide fully open position or the fully closed position. It has become.

The control unit 13 controls the first relay to open the roof glass 4 normally (manually open) while the tilt open switch SW4 is being operated, that is, while an ON signal is being input from the switch SW4. 17a is turned on to supply the drive power source + B to the drive motor 5 to drive the motor 5. When the operation of the tilt opening switch SW4 is stopped, that is, when an off signal is input from the switch SW4, the control unit 13 causes the first operation to stop the operation of the roof glass 4.
Drive power to drive motor 5 by turning off relay 17a +
Stop the supply of B. Further, in this case, when the roof glass 4 is placed at the tilt fully open position by detecting the opening / closing position of the roof glass 4 which will be described later, the control unit 13 causes the drive motor 5 to operate even if the tilt open switch SW4 is operated. The driving power supply + B is stopped to stop the operation of the roof glass 4.

On the other hand, the controller 13 controls the tilt close switch S
While operating W5, that is, while an ON signal is being input from the switch SW5, the second relay 17b is turned on to normally close the roof glass 4 (manual closing operation), and the drive power source is supplied to the drive motor 5. + B is supplied to drive the motor 5. When the operation of the tilt close switch SW5 is stopped, that is, when an OFF signal is input from the switch SW5, the control unit 13 turns on the second relay 17b to stop the operation of the roof glass 4 and drives the drive motor 5. Stop supplying power + B. Further, in this case, when the roof glass 4 is placed in the fully closed position by detecting the opening / closing position of the roof glass 4 which will be described later, the control unit 13 causes the drive motor 5 to operate even if the tilt closing switch SW5 is operated. The driving power supply + B is stopped to stop the operation of the roof glass 4.

The control device 11 includes a pair of Hall element magnetic sensors 18a, 18b as position detecting means for detecting the rotation cycle (rotation speed) and rotation direction of the drive motor 5.
Are arranged on a substrate forming the control device 11.
Specifically, a multi-pole magnetized sensor magnet is provided on the rotation shaft (not shown) of the drive motor 5 so as to rotate integrally, and the Hall element magnetic sensor 18a, 18b are arranged at predetermined intervals in the rotational direction. That is, as the rotation sensor of this embodiment, a non-contact rotation sensor using magnetism is used. Each Hall element magnetic sensor 18a, 18
When the drive motor 5 is rotated, the output signal b outputs a pulsed output signal corresponding to the rotation of the motor 5 to the detection circuit 19. The output signals (pulse signals) output from the Hall element magnetic sensors 18a and 18b have a predetermined phase difference (for example, 1/4 cycle). The detection circuit 19 shapes the waveform of each output signal (pulse signal) and outputs it to the control unit 13.

The control unit 13 drives the drive motor 5 based on the cycle of the output signal (pulse signal) input from the Hall element magnetic sensors 18a and 18b through the detection circuit 19.
The rotation cycle (rotation speed) of is detected.

That is, when the slide open switch SW2 and the tilt open switch SW4 are operated and the ON signal is input, the control section 13 changes to the rising or falling edge of the output signal (pulse signal) from the sensor 18b, for example. Based on this, "1" is added to the count value (see FIG. 2). On the other hand, the control unit 13 controls the slide close switch S.
When W3 and the tilt close switch SW5 are operated and an ON signal is input, "1" is obtained from the count value added at the time of opening at each rising or falling edge of the output signal (pulse signal) from the sensor 18b. Subtract. Then, the control unit 13 is adapted to detect the open / close position of the roof glass 4 according to the count value.

Incidentally, as shown in FIG. 2, in the present embodiment, when the count value becomes "10" or less, the roof glass 4 is regarded as the fully closed mask area which is considered to be arranged at the fully closed position. Further, when the roof glass 4 is arranged at the tilt fully open position, the count value becomes "128", and when the roof glass 4 is arranged at the pseudo fully closed position, the count value becomes "205". In this case, the count value "0" ~
The tilt A area is set between “128” and the count value “12” is set.
The tilt B region is between 8 ”and“ 205 ”. or,
When the roof glass 4 is placed in the flap down position,
The count value becomes "248", and when the roof glass 4 is arranged at the slide fully open position, the count value becomes "106".
2 ”. The count value is "248" to "254".
The area between them (slide A area in FIG. 2) is a load reversal mask area in which entrapment determination described later is not performed. In other words, the count value that is the other slide area is "25
The pinch determination is performed between "4" and "1062" (slide B area in FIG. 2). When the roof glass 4 is placed at the mechanical limit position on the fully open side, the count value becomes "1150".

The origin position setting (initial setting) for determining the relative relationship between the roof glass 4 and the count value is performed, for example, when the vehicle is shipped or when it is completely disabled during normal use. Done. The origin position is set by operating the tilt close switch SW5 for a predetermined time or a predetermined number of times or more so that the roof glass 4 is further operated in the closing direction in a state where the roof glass 4 is arranged at the mechanical limit position on the fully closed side. This is done by setting the count value to "0" by performing the same process. In this case, the origin position set flag in the control unit 13 is set.

Further, the control unit 13 detects the rotation direction of the drive motor 5 according to the phase difference of each output signal (pulse signal), and opens / closes the roof glass 4 based on the detection of the rotation direction of the drive motor 5. The direction is being detected.

Further, when the rotation speed of the drive motor 5 becomes slower than a predetermined entrapment judgment value while the roof glass 4 is performing the automatic closing operation, the control section 13 causes the roof glass 4 and the roof panel 2 to be closed. It is determined that the foreign matter is sandwiched between and and the rotation speed becomes slower (the rotation cycle becomes longer). Then, the control unit 13 causes the drive motor 5 to release the foreign matter sandwiched by the roof glass 4 being closed.
Is reversed, and the roof glass 4 is reversed by a specified amount (predetermined count value) in the fully opening direction. At this time, the control unit 13 switches the count value from subtraction to addition based on the reverse rotation of the drive motor 5.

Further, the control unit 13 is provided with a RAM (Random Access Memory) 13a as a storage device. The control unit 13 stores the count value for detecting the opening / closing position of the roof glass 4 described above. The count value is rewritten each time the value changes. Further, in this case, the control unit 13 stores the count value as it is as a "normal value" and also stores a "mirror value" obtained by inverting all the bits of the logic of the "normal value".

Here, the RAM 13a is a volatile storage device in which data is lost unless power is supplied.
Therefore, the control unit 13 erases the data (count value) stored in the RAM 13a when the drive power supply + B supplied via the power supply circuit 12 becomes equal to or lower than the predetermined voltage value and returns (to the predetermined voltage) again. RA as possible
It is determined whether or not the data (count value) stored in the M13a is normally stored (hereinafter, this determination is made in the RAM.
Check). At the time of this RAM check, the control unit 13 adds the "normal value" and the "mirror value" of the count values stored in the RAM 13a, and makes a determination based on the addition result.

When the "normal value" and the "mirror value" are added and all the bits are "1", the control unit 13
It is determined that the data (count value) is normally stored in the RAM 13a (RAM check OK). That is,
Since the "mirror value" is data obtained by inverting all the bits of the logic of the "normal value", the addition result should be all bits "1" if normally stored. In contrast,
When all bits become "0" by adding the "normal value" and the "mirror value", the control unit 13 determines that the data (count value) in the RAM 13a has disappeared (RAM check NG). That is, when the power supply is cut off, both the “normal value” and the “mirror value” become all bits “0”, and the addition result also becomes all bits “0”.

Further, the control section 13 is an EEPROM (Electrically Erasable Programma) provided in the control device 11.
ble read-only memory) 20. For example, after setting the above-mentioned origin position or after a lapse of a predetermined time (for example, 1 second) after stopping the drive motor 5 (after operating the roof glass 4), At the timing, the "normal value" and "mirror value" of the count value at that time are stored. This EEPROM 20
Is a non-volatile storage device that is electrically erasable (rewritable) and does not lose data even when the power is turned off.

Here, the control unit 13 performs a specific process regarding the RAM check according to the process flow shown in FIG. As described above, this processing flow is the same as the drive power supply + that is supplied to the control unit 13 via the power supply circuit 12.
When B becomes equal to or lower than the predetermined voltage value and returns (to the predetermined voltage) again, the operation is started.

In step S1, the control unit 13 controls the R
It is determined whether the AM check is “OK”. That is, the control unit 13 adds the "normal value" of the count value stored in the RAM 13a and the "mirror value" to each other, and when all the bits become "1", the RAM 13a normally stores the count value. As (RAM check OK), the process proceeds to step S2.

In step S2, the control unit 13 determines the operating state of the drive motor 5 immediately before the drive power source + B becomes equal to or lower than the predetermined voltage value, and in this case, it determines based on motor state data described later. When the drive motor 5 is not operating, that is, when the motor state data is data corresponding to "stopped", the control unit 13 determines that the roof glass 4 is to be operated when the drive power source + B becomes equal to or lower than a predetermined voltage value. Not working,
It is recognized that the actual opening / closing position of the roof glass 4 and the count value stored in the RAM 13a are not displaced, and the process proceeds to step S3.

In step S3, the control unit 13 controls the RAM
The count value in 13a is retained as it is, and step S8 is performed.
Proceed to. In step S8, the control unit 13 causes the RAM 13
Main processing is performed to perform various opening / closing operations of the roof glass 4 based on the opening / closing position of the roof glass 4 based on the count value in a and the operation of the switches SW2 to SW5. Then, the control unit 13 repeats the main process of step S8 until the driving power source + B becomes equal to or less than the predetermined voltage value next. The main process is repeated every predetermined time (for example, every 3 [ms]).

The main processing includes output control of the drive motor 5 as shown in FIG. In the output control of the drive motor 5, the control unit 13 performs step S81.
And the operating state of the drive motor 5 is off (the operating mode is O
FF), in this case, the relay 17a,
The determination is made based on the on / off state of 17b. Control unit 13
When the operating state is the ON state (when one of the relays 17a and 17b is ON), the process proceeds to step S82, and the motor state data is rewritten to the data corresponding to "in operation". On the other hand, when the operating state of the drive motor 5 is off (when both the relays 17a and 17b are off), the control unit 13 proceeds to step S83 and sets the motor state data to "stopped". It is rewritten to the corresponding data. That is, the control unit 13 rewrites the motor state data every predetermined time (for example, every 3 [ms]).

On the other hand, in step S2,
When it is determined that the drive motor 5 is operating immediately before the drive power supply + B becomes equal to or lower than the predetermined voltage value, that is, when the motor state data is the data corresponding to “operating”, the control unit 13 proceeds to step S4. The process proceeds and the count value in the RAM 13a is held as it is, and the origin position reset flag is set to reset the origin position.

That is, when the driving power supply + B becomes equal to or lower than the predetermined voltage value, the roof glass 4 is operating and the sensor 18
The output signal (pulse signal) from a, 18b becomes an abnormal waveform and cannot be counted, or it cannot be counted even if the waveform of the output signal (pulse signal) is normal.
In some cases, writing to the RAM 13a may not be possible. Therefore, even if the RAM check is OK, when the drive motor 5 is operating (the roof glass 4 is operating), the control unit 13 determines the actual opening / closing position of the roof glass 4 and the count value. It is determined that there may be a gap between them, and the origin position reset flag is set.

Then, the control unit 13 proceeds to step S8 and performs the above-mentioned main processing. At this time, the control unit 13
When the roof glass 4 is closed and placed at the mechanical limit position on the fully closed side in the main processing of step S8, resets the origin position for setting the count value to "0".
Specifically, the control unit 13 resets the origin position according to the processing flow shown in FIG.

In step S11, the controller 13
Roof glass 4 by slide closing operation or tilt closing operation
Is placed at the mechanical limit position on the fully closed side, and when the locked state of the drive motor 5 is detected, stop processing for stopping the drive motor 5 is performed in step S12. Then, in step S13, if the above-mentioned origin position reset flag is set, the control unit 13 proceeds to step S14 and sets the count value to "0" (origin position reset). At this time, the control unit 13 clears the origin position reset flag. In this way, the origin position of the roof glass 4 is reset. Such resetting of the origin position is performed when the vehicle is shipped or when the normal operation is completely disabled during use as described above (initial setting).
Different from, the origin position is simply set.

On the other hand, in the RAM check in step S1, when all the bits become "0" by adding the "normal value" and the "mirror value" of the count values stored in the RAM 13a (or all If the bit does not become "1"), the control unit 13 determines that the data (count value) in the RAM 13a has disappeared (RAM check NG). That is, the control unit 13 recognizes that the original position (opening / closing position) of the roof glass 4 has been lost, and the roof glass 4 is in a normally inoperable state, and proceeds to step S5.

In step S5, the controller 13 determines the operating state of the drive motor 5 immediately before the drive power source + B becomes equal to or less than the predetermined voltage value, as in step S2. In this case, the determination is made based on the motor state data. . If the drive motor 5 is not operating, that is, the motor state data is data corresponding to "stopped", the control unit 13 proceeds to step S6 and reads the data (count value) stored in the EEPROM 20. Write to the RAM 13a.

That is, since the roof glass 4 is not in operation when the drive power source + B becomes equal to or lower than the predetermined voltage value, the EE
Assuming that the data (count value) stored in the PROM 20 matches the actual opening / closing position of the roof glass 4,
The controller 13 writes the data (count value) of the EEPROM 20 into the RAM 13a. Then, the control unit 13 recognizes that the roof glass 4 can be normally operated by the data (count value) written in the RAM 13a, and proceeds to step S8 to perform the above-described main processing.

On the other hand, in step S5,
When it is determined that the drive motor 5 is in operation immediately before the drive power supply + B becomes equal to or lower than the predetermined voltage value, that is, when the motor state data is the data corresponding to "in operation", the control unit 13 proceeds to step S7. Proceed to set the default value (for example, all bits “0”) in the RAM 13a, and
When the origin position setting (initial setting) is performed when the vehicle is shipped,
Clear the origin position set flag that is set.

That is, in the case of RAM check NG, the control unit 13 loses the origin position (opening / closing position) of the roof glass 4 and the roof glass 4 is in a normally inoperable state. Various normal opening / closing operations of the roof glass 4 based on the operations of SW2 to SW5 cannot be performed. Therefore, when the origin position set flag is in the clear state, the control unit 13 opens and closes the roof glass 4 by a predetermined count value even if the switches SW2 to SW5 are operated in the main process of step S8. Inching mode (origin position setting state operation) mode is entered. In this way, the operator is urged to perform the origin position setting (initial setting). Then, the control unit 13 sets the origin position according to the processing flow shown in FIG.

In step S21, the control unit 13
When the roof glass 4 is placed at the mechanical limit position on the fully closed side by the slide closing operation or the tilt closing operation in the inching operation (origin position setting state operation) mode, and the lock state of the drive motor 5 is detected, driving is performed in step S22. Stop processing for stopping the motor 5 is performed. And step S
In 23, as described above, in the state where the roof glass 4 is arranged at the mechanical limit position on the fully closed side, the tilt close switch S is operated to further operate the roof glass 4 in the closing direction.
When W5 is operated for a predetermined time or a predetermined number of times or more, the control unit 13 sets the count value to "0". And
The control unit 13 sets the origin position setting completion flag and ends the origin position setting (initial setting).

As described above, in this embodiment, the driving power source + B
Even if there is a voltage variation such that the voltage is less than or equal to a predetermined voltage value, the deviation between the actual opening / closing position of the roof glass 4 and the count value for detecting the opening / closing position is reliably prevented.

As described above, the sunroof device of this embodiment has the following features. (1) In the present embodiment, the driving power source + B stored in the RAM 13a and supplied to the driving unit 10 each time the count value for detecting the open / close position of the roof glass 4 changes.
Is determined to be equal to or less than the predetermined voltage value and returned (to the predetermined voltage) again, it is configured to determine whether the count value is normally stored in the RAM 13a. Then, even if it is determined that the count value is normally stored, the control unit 13 operates the drive motor 5 that opens and closes the roof glass 4 immediately before the drive power source + B becomes equal to or less than the predetermined voltage value. If it is in the middle, it is determined that there may be a deviation between the roof glass 4 and the count value. Then, when the roof glass 4 is placed at the predetermined position (the mechanical limit position on the fully closed side) after the determination, the control unit 13 sets the origin position for setting the count value to the predetermined count value (“0”). Reset the settings.

That is, when the driving power supply + B becomes equal to or lower than the predetermined voltage value, the counting operation cannot be performed normally, or R
In some cases, the count value cannot be written to the AM 13a, so if the drive motor 5 is operating at that time, the RA 4 will move even though the roof glass 4 is moving.
The count value in M13a does not change. Therefore, a shift may occur between the open / close position of the roof glass 4 and the count value. Therefore, since the origin position of the roof glass 4 is reset on the assumption of such a case, the deviation between the open / close position of the roof glass 4 and the count value can be prevented.

(2) In the present embodiment, the control section 13 determines that the roof glass 4 and the count value may deviate from each other immediately after the roof glass 4 is in the predetermined position (the fully closed side). Mechanical limit position), the origin position for resetting the count value to a predetermined count value (“0”) is reset. That is, the origin position is reset immediately after it is determined that the deviation may have occurred, so that the deviation can be prevented early.

(3) In the present embodiment, the resetting of the origin position is performed by setting the count value to the predetermined count value ("0") with the roof glass 4 arranged at the mechanical limit position on the fully closed side. It is done by Therefore, it is possible to easily reset the origin position.

(4) In this embodiment, the drive motor 5 is supplied with the drive power source + B via the relays 17a and 17b, and the control unit 13 has the relays 17a and 17b.
The operating state of the drive motor 5 is detected in the ON / OFF state of.
Therefore, the operating state of the motor can be easily detected.

(5) In the present embodiment, the RAM 13a stores the "normal value" in which the count value is stored as it is and the "mirror value" obtained by inverting all the bits of the logic of the "normal value". Reference numeral 13 determines whether or not the count value is normally stored by adding the "normal value" and the "mirror value" during the RAM check. Therefore, in normal operation, the addition result is all bits "1".
The determination can be easily performed.

(6) In this embodiment, the EEPROM 20
The EEPROM 20 has a RAM 13a.
The count value stored in is stored at a predetermined timing. Therefore, if the drive motor 5 is not operating even if the RAM check fails, the count value stored in the EEPROM 20 can be simply written in the RAM 13a as it is to easily restore the normal operation state.

(Second Embodiment) A second embodiment in which the present invention is embodied in a power window device equipped in an automobile will be described below with reference to the drawings. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

FIG. 9 is a perspective view of an essential part of an automobile equipped with a power window device. A door 22 is provided on the side surface of the automobile 21. The door 22 is provided with a window 23, and the window 23 is opened and closed by a window glass 24 as an opening / closing member provided on the door 22. The window glass 24 is provided so as to be able to reciprocate (open and close) in the vertical direction. And
The window glass 24 is opened and closed via a drive transmission mechanism (not shown) based on the drive of the drive motor 25 shown by the broken line in FIG. The drive motor 25 constitutes a drive unit 30 together with a control device 31 which will be described later and controls the drive of the motor 25. The drive unit 30 is arranged inside the door 22.

FIG. 8 shows an electric block circuit for explaining the electric configuration of the power window device for driving and controlling the drive motor 25. The control device 31 that drives and controls the drive motor 25 has the same configuration as the control device 11 of the first embodiment.

That is, the control device 31 includes various switches SW6 to SW8 operated to open and close the window glass 24, that is, an up switch (close switch) S.
W6, a down switch (open switch) SW7, and an auto switch SW8 are connected to each other. Various switches S
When each of W6 to SW8 is operated, a command signal (L
A level (ground level) ON signal is output to the control unit 13 via the input circuit 14.

When the up switch SW6 is operated, the control section 13 drives the drive motor 25 via the drive circuit 17 and raises (closes) the window glass 24 while the operation is continued. Further, when the down switch SW7 is operated, the control unit 13
The drive motor 25 is driven via the drive circuit 17 to lower (open) the window glass 24. When the auto switch SW8 is operated, the switches SW6 and SW7 are operated.
Any of the above can be operated, and the control unit 13
Drives the drive motor 25 via the drive circuit 17 to close or open the window glass 24 at once to the fully closed position or the fully opened position (automatic opening / closing operation).

Further, the control unit 13 performs the counting operation based on the output signals (pulse signals) input from the Hall element magnetic sensors 18a and 18b through the detection circuit 19 as in the first embodiment. The open / close position of the window glass 24 is detected according to the count value. The origin position setting (initial setting) that determines the relative relationship between the window glass 24 and the count value is performed, for example, when the vehicle is shipped or when the normal operation is completely disabled during use. The origin position is set by operating the up switch SW6 for a predetermined time or a predetermined number of times or more so as to further operate the window glass 24 in the closing direction in a state where the window glass 24 is arranged at the mechanical limit position on the fully closed side. Then, the count value is set to "0". in this case,
The origin position setting completion flag in the control unit 13 is set.

Further, the control unit 13 detects the rotating direction of the drive motor 25 according to the phase difference between the output signals (pulse signals), and detects the opening / closing direction of the window glass 24.
Further, the control unit 13 makes a pinch determination based on the rotation speed of the drive motor 25 while the window glass 24 is performing the automatic closing operation.

Further, in this embodiment, the control unit 13 controls the R
A count value for detecting the opening / closing position of the window glass 24 is stored in the AM 13a, and the RAM check processing as shown in FIGS. 3 to 6 is performed as in the first embodiment. That is, also in the present embodiment, as in the first embodiment, the actual open / close position of the window glass 24 and its open / close position are detected even if there is a voltage fluctuation such that the drive power source + B becomes equal to or lower than a predetermined voltage value. Therefore, the deviation from the count value is surely prevented.

The embodiment of the present invention may be modified as follows. In the above embodiment, the control unit 13 performs the process according to the process flow shown in FIG. 3, but the process flow may be changed as appropriate. For example, in FIG. 3, the RAM check is performed before determining the operating state of the motor 5, but the operating states of the motors 5 and 25 may be determined first, and then the RAM check may be performed.

In the above embodiment, the control unit 13 performs the RAM check by adding the "normal value" and the "mirror value" of the count values, but the check method is not limited to this. Instead, it may be changed appropriately.

In the above embodiment, the "normal value" and the "mirror value" of the count value are stored in the RAM 13a, but either one may be stored. In this case, it is necessary to appropriately change the PAM check method according to the stored form. Information other than the count value may be stored in the RAM 13a.

Although the EEPROM 20 is provided in the above embodiment, it may be omitted if not particularly required. In the above-described embodiment, the origin position of the opening / closing member is determined immediately after determining that there may be a deviation between the opening / closing member (roof glass 4, window glass 24) and the count value (step S4 in FIG. 3). However, it does not have to be immediately after that.For example, the origin position is reset after opening and closing a predetermined number of times, or the origin position is reset when the determination is repeated a predetermined number of times. May be performed.

In the above embodiment, the opening / closing member (roof glass 4, window glass 24) is used when resetting the origin position.
Although the count value is set to the predetermined count value (“0”) in the state in which it is arranged at the mechanical limit position on the fully closed side, the position of the opening / closing member is not limited to this. For example, the count value may be set to a predetermined count value in a state of being arranged at the mechanical limit position on the fully open side. In this case, the count value may be set to a number corresponding to the mechanical limit position on the fully open side.

In the above embodiment, the relays 17a, 17
Although the operating states of the drive motors 5 and 25 are detected in the on / off state of b, the drive motors 5 and 25 are detected in other forms.
The operating state of 25 may be detected.

In the above embodiment, the drive motors 5 and 25 are used.
When the rotation speed of the vehicle becomes slower than a predetermined entrapment determination value, the opening / closing member (roof glass 4, window glass 24)
Although it is determined that the entrapment has occurred, the determination of the entrapment is not limited to this.

In the above embodiment, the Hall element magnetic sensors 18a and 18b are used as the rotation sensor, but a magnetoresistive element whose resistance changes with a change in magnetic field may be used.
In addition to the non-contact type magnetic sensor as described above, for example, an optical rotation sensor may be used. Alternatively, a contact type rotation sensor using a sliding contact may be used.

The circuit configurations of the control devices 11 and 31 of the above embodiment are not limited to this, and may be changed as appropriate. In the above embodiment, the drive motors 5 and 25 and the control devices 11 and 31 having the Hall element magnetic sensors 18a and 18b and the control unit 13 are integrally configured as the drive units 10 and 30, but the present invention is not limited to this. For example, the control device 11 may be separately provided.

In the above-described embodiment, the sunroof device for performing the slide opening / closing operation and the tilt opening / closing operation as shown in FIG. 2 is used, but it is applied to the sunroof device for performing the slide opening / closing operation and the tilt opening / closing operation of other operation modes. You may. Further, it may be implemented in a sunroof device which performs only a slide opening / closing operation and a tilt opening / closing operation.

In the above-described embodiment, the sunroof device having the opening / closing member as the roof glass and the power window device having the opening / closing member as the window glass are used. It may be implemented in other devices. It may also be implemented in a device that opens and closes an opening and closing member other than the vehicle.

The technical ideas that can be understood from the above-described embodiments will be described below. (A) In the opening / closing member control device according to any one of claims 1 to 5, the storage device stores a normal value in which the count value is stored as it is, and a mirror value obtained by inverting all the bits of the normal value. The opening / closing member control device is characterized in that the determination means determines whether or not the count value is normally stored by performing a predetermined logical operation on the normal value and the mirror value.

(B) In the opening / closing member control device according to any one of claims 1 to 5 and (a), the count value stored in the storage device is stored at a predetermined timing and is electrically erasable. An opening / closing member control device comprising a non-volatile storage device.

(C) In the method for preventing the positional deviation of the opening / closing member in the opening / closing member control device according to any one of claims 6 to 10, the storage device stores a normal value in which the count value is stored as it is, A mirror value obtained by inverting all the bits of the normal value is stored, and a predetermined logical operation is performed on the normal value and the mirror value to determine whether or not the count value is normally stored. A method for preventing positional deviation of an opening / closing member in an opening / closing member control device.

(D) In the opening / closing member position deviation preventing method in the opening / closing member control device according to any one of claims 6 to 10 and (c), the control device includes an electrically erasable nonvolatile memory. Method for preventing positional deviation of the opening / closing member in the opening / closing member control device, characterized in that the count value stored in the nonvolatile memory device is stored at a predetermined timing.

According to the inventions described in (a) and (c) above, it is possible to easily determine whether or not the count value is normally stored, for example, by adding the normal value and the mirror value. You can

According to the inventions described in (b) and (d) above, in some cases, the count value stored in the non-volatile memory device can be written to the main memory device as it is, and the normal operation can be easily performed. Can return to the state.

[0094]

As described in detail above, according to the present invention,
An opening / closing member control device configured to perform a counting operation based on the rotation of a drive motor and detect the opening / closing position of the opening / closing member based on the count value, wherein the power supply voltage fluctuates during the operation of the driving motor. It is possible to provide an opening / closing member control device that can prevent the opening / closing position of the opening / closing member from deviating from the count value due to the voltage fluctuation, and a method for preventing positional deviation of the opening / closing member in the opening / closing member control device.

[Brief description of drawings]

FIG. 1 is an electrical configuration diagram of a sunroof device according to a first embodiment.

FIG. 2 is an explanatory diagram for explaining an opening / closing operation of a roof glass.

FIG. 3 is a flowchart illustrating a process related to a RAM check.

FIG. 4 is a flowchart illustrating a process related to motor output control.

FIG. 5 is a flowchart for explaining resetting of the origin position.

FIG. 6 is a flowchart for explaining origin position setting (initial setting).

FIG. 7 is a perspective view of a main part of an automobile equipped with a sunroof device.

FIG. 8 is an electrical configuration diagram of a power window device according to a second embodiment.

FIG. 9 is a perspective view of a main part of an automobile equipped with a power window device.

[Explanation of symbols]

4 ... Roof glass as opening / closing member, 5 ... Drive motor,
13 ... Position detecting means, opening / closing control means, judging means, motor state detecting means, position deviation judging means, and controller for forming position deviation preventing means, 13a ... RA as storage device
M, 17a, 17b ... First and second relays as relays, 18a, 18b ... Hall element magnetic sensor constituting position detecting means, 24 ... Window glass as opening / closing member, 25 ... Drive motor.

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 2E052 AA09 BA02 CA06 EA11 EA15                       GA10 GB12 GC01 GC02 GC05                       GC06 GC10 GD01 KA15

Claims (10)

[Claims] 1. A drive motor that opens and closes an opening / closing member, a position detecting unit that performs a counting operation based on rotation of the driving motor, and detects an open / closed position of the opening / closing member based on the count value, and the position detecting unit. The opening / closing control means for performing the opening / closing control according to the opening / closing position of the opening / closing member, the storage device that stores the count value each time it changes, and the driving power supplied to the device are returned to the predetermined voltage value or less and restored again. In this case, an opening / closing member control device comprising: a determination unit that determines whether or not the count value is normally stored in the storage device, and a motor that determines whether or not the drive motor is operating. Even when the state detection means and the determination means determine that the count value is normally stored, the motor state detection means immediately before the drive power source becomes equal to or lower than a predetermined voltage value. In the case where it is detected that the drive motor is operating, the position deviation determining means for determining that there is a possibility that a deviation has occurred between the opening / closing member and the count value is provided. Opening / closing member control device. 2. A drive motor for opening and closing the opening / closing member, a position detecting means for performing a counting operation based on the rotation of the driving motor, and a position detecting means for detecting the opening / closing position of the opening / closing member based on the count value. The opening / closing control means for performing the opening / closing control according to the opening / closing position of the opening / closing member, the storage device that stores the count value each time it changes, and the driving power supplied to the device are returned to the predetermined voltage value or less and restored again. In this case, an opening / closing member control device comprising: a determination unit that determines whether or not the count value is normally stored in the storage device, and a motor that determines whether or not the drive motor is operating. Even when the state detection means and the determination means determine that the count value is normally stored, the motor state detection means immediately before the drive power source becomes equal to or lower than a predetermined voltage value. When it is detected that the drive motor is in operation, it is determined that there may be a deviation between the opening / closing member and the count value, and the opening / closing member is arranged at a predetermined position. 2. An opening / closing member control device, comprising: an origin position for setting the count value to a predetermined count value, and position deviation prevention means for preventing the deviation. 3. The opening / closing member control device according to claim 2, wherein the position deviation prevention unit opens or closes the opening / closing member immediately after it is determined that a deviation may occur between the opening / closing member and the count value. The opening / closing member control device, wherein when the member is arranged at the predetermined position, an origin position for setting the count value to the predetermined count value is set. 4. The opening / closing member control device according to claim 2, wherein the position deviation prevention unit counts the count value by a predetermined count when the opening / closing member is arranged at a mechanical limit position on the fully closed side. An opening / closing member control device characterized by setting an origin position to be set to a value. 5. The opening / closing member control device according to claim 1, wherein the drive power is supplied to the drive motor via a relay, and the motor state detection means includes: An opening / closing member control device, which detects an operating state of the drive motor based on an on / off state of the relay. 6. A structure for performing a counting operation based on rotation of a drive motor for opening and closing the opening and closing member, detecting an opening and closing position of the opening and closing member based on the count value, and performing opening and closing control according to the opening and closing position. In addition, each time the count value changes, it is stored in the storage device, and if the supplied driving power supply becomes equal to or lower than a predetermined voltage value and returns again, whether the count value is normally stored in the storage device or not. A method for preventing the positional deviation of the opening / closing member in the opening / closing member control device configured to determine whether the count value is normally stored in the determination, and the drive power supply has a predetermined voltage value. When the drive motor is in operation immediately before the following condition, it is determined that there may be a deviation between the opening / closing member and the count value. The displacement prevention method of opening and closing member in the closing member control device. 7. A configuration in which a counting operation is performed based on rotation of a drive motor that opens and closes the opening / closing member, the opening / closing position of the opening / closing member is detected based on the count value, and opening / closing control is performed according to the opening / closing position. In addition, each time the count value changes, it is stored in the storage device, and if the supplied driving power supply becomes equal to or lower than a predetermined voltage value and returns again, whether the count value is normally stored in the storage device or not. A method for preventing the positional deviation of the opening / closing member in the opening / closing member control device configured to determine whether the count value is normally stored in the determination, and the drive power supply has a predetermined voltage value. If the drive motor was in operation immediately before the condition below, it is determined that a deviation may have occurred between the opening / closing member and the count value, and the opening / closing member may be moved to a predetermined position. The count value in the arrangement state to set the home position to be set to a predetermined count value, the displacement prevention method of opening and closing member in the closing member control device being characterized in that so as to prevent its displacement. 8. The method for preventing the positional deviation of the opening / closing member in the opening / closing member control device according to claim 7, immediately after it is determined that a deviation may occur between the opening / closing member and the count value. A method for preventing positional deviation of an opening / closing member in an opening / closing member control device, wherein when the opening / closing member is arranged at the predetermined position, the origin position for setting the count value to the predetermined count value is set. 9. The method for preventing the positional deviation of the opening / closing member in the opening / closing member control device according to claim 7, wherein the count value is set to a predetermined value when the opening / closing member is arranged at a mechanical limit position on the fully closed side. A method for preventing positional deviation of an opening / closing member in an opening / closing member control device, characterized in that an origin position to be set to a count value is set. 10. The method for preventing displacement of the opening / closing member in the opening / closing member control device according to claim 6, wherein the drive motor is supplied with drive power via a relay. A method for preventing positional deviation of an opening / closing member in an opening / closing member control device, wherein the operating state of the drive motor is detected based on an on / off state of the relay.