JPH06225559A - Method of controlling motor of power window device - Google Patents

Abstract

PURPOSE:To provide the method of controlling the motor of a power window device, by which the motor can be performed surely without the complicatedness of initialization by automatically performing initialization. CONSTITUTION:This is the method of controlling the motor of a power window device 1, which automatically shifts window glass to full-open position with a control means 10, when power is restored after the connection of a power source is broken, and also sets the predetermined stroke value in position counter 8a so as to perform initialization.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor control method for a power window device which is used to control the operation of a windshield by detecting the current position of the windshield driven by a motor.

[0002]

2. Description of the Related Art Conventionally, as a motor control method for a power window device for controlling the operation of the windshield by detecting the current position of the windshield, a method shown in FIG. 7 is known. In FIG. 7, the motor 10
0, when the switch 111 is turned on, the armature shaft 101 rotates, and the armature shaft 10
1 is transmitted to the worm wheel 102, and the rotative power of the worm wheel 102 is applied to the shock absorbing damper 1
It is transmitted to the output shaft 105 via 04. Output shaft 105
The window glass 1 via the glass lifting mechanism 106.
07 is connected, and the rotational power of the output shaft 105 is converted by the glass elevating mechanism 106 into movement of the window glass 107 toward the fully closed side and the fully open side. Armature shaft 1
01 is provided with a rotation detecting mechanism 108, and the rotation speed of the armature shaft 101 is converted into a pulse signal by the rotation detecting mechanism 108 and transferred to a controller 109 which is a control means. Current position data and armature shaft 10 within the stroke from the closed position to the fully open position
The number of rotations of 1 is stored. So wind glass 1
If the rotation of the armature shaft 101 is restricted before 07 reaches the fully closed position, the controller 109
Recognizes that something is caught by the load applied to the rotation of the armature shaft 101 even though the current position data of the windshield 107 from the rotation detection mechanism 108 has not reached the fully closed position, Motor 1
Motor 100 after the current supply to 00 has been cut off
The control is performed by reversing the current supplied to the window glass 107 and moving the window glass 107 toward the fully open side by a predetermined amount. The controller 109 deletes the stored current position data and the rotation speed of the armature shaft 101 when the power source such as the battery is removed from the vehicle. Therefore, when the power source is attached, the current position data and the armature shaft 101 The driver performs reprogramming to newly recognize the rotation speed.

[0003]

In the conventional motor control method for the power window device described above, the current position data and the rotation speed of the armature shaft 101 are updated when the power source is removed from the vehicle and then attached again. The driver must perform reprogramming to make the driver aware, and it is difficult to say that reprogramming is easy.
There is a risk of leaving the window unreprogrammed, and when the window glass 107 is in the open state, the window glass 107 is turned to the fully closed position by operating the switch 111 while the window reprogramming is not performed. If moved, the actual position of the windshield does not match the current position recognized by the controller 109, and even if a pinch occurs, the controller 109 keeps the armature shaft 101 at the fully closed position.
It may be mistaken for the load to be applied to the motor 10, and in that case, the motor 10 without performing the reversing operation due to the sandwiching is performed.
There is a problem that 0 may be stopped, and it has been a problem to solve this problem.

[0004]

SUMMARY OF THE INVENTION A motor control method for a power window device according to the present invention is capable of reliably operating a motor even if stored data is erased by automatically performing initial setting upon restoration of power. An object of the present invention is to provide a motor control method for a device.

[0005]

[Constitution of the invention]

[0006]

A motor control method for a power window device according to the present invention is an open switch / close switch that is turned on by an operation of an occupant, and an output shaft is connected to a window glass and the open switch / close switch is connected. When the switch is turned on, current in the forward and reverse directions is supplied, and the motor that moves the window glass within the stroke between the fully closed position and the fully open position via the output shaft, and the drive means that connects the power source to the motor, Rotation detecting means for detecting the number of revolutions of the output shaft of the motor to generate a pulse signal, and a position counter for counting the current position data of the window glass by the pulse signal from the rotation detecting means and the pulse signal from the rotation detecting means. Current value with a pulse cycle timer that detects the rotation state of the motor according to the current cycle time of A position reference value storage means for presetting a position reference value corresponding to the vicinity of the fully closed position within the stroke of the memory and the window glass, and a preset reference time storage for a pulse cycle reference time corresponding to the rotation speed of the motor. The control means is provided with a reference value memory having means, and when the power supply is connected, the control means controls the motor until the current cycle time of the pulse cycle timer exceeds the pulse cycle reference time of the reference time storage means. When the current on the open side of the window is supplied and the current cycle time of the pulse cycle timer exceeds the pulse cycle reference time of the reference time storage means, the current supply to the motor is stopped and the count value of the position counter is set to the total stroke amount of the window glass. Is set to a stroke value that is set in advance to perform initial setting, and the initial setting is When the close switch is turned on, the current on the window closing side is supplied to the motor until the current cycle time of the pulse cycle timer exceeds the pulse cycle reference time of the reference time storage means, and the pulse When the current cycle time of the cycle timer exceeds the pulse cycle reference time of the reference time storage means, the window open side current is supplied to the motor when the count value of the position counter is larger than the position reference value of the position reference value storage means. However, when the count value of the position counter becomes smaller than the position reference value of the position reference value storage means, the control for stopping the current supply to the motor is performed, and the control means in a more preferable embodiment. When the ON of the open switch is recognized by, the current cycle time of the pulse cycle timer is The current on the window open side is supplied to the motor until the reference time exceeds the cycle time, and the current supply to the motor is stopped when the current cycle time of the pulse cycle timer exceeds the pulse cycle reference time of the reference time storage means. Can be done.

[0007]

In the motor control method of the power window device according to the present invention, when the power source is connected, the motor is operated until the current cycle time of the pulse cycle timer exceeds the pulse cycle reference time of the reference time storage means. The window glass is moved to the fully open position by supplying the current on the window open side, and when the current cycle time of the pulse cycle timer exceeds the pulse cycle reference time of the reference time storage means, the window glass reaches the fully closed position. The current supply to the motor is stopped and the count value of the position counter is set to a predetermined stroke value corresponding to the total stroke amount of the window glass for initialization. Therefore, the initial setting is automatically performed without the driver performing an operation such as reprogramming, so that the motor can be surely restarted after the power supply is connected.

[0008]

1 to 6 show an embodiment of a motor control method for a power window device according to the present invention.

A power window device 1 in which the motor control method of the power window device according to the present invention is used is shown in FIG.
As is clear from Fig. 7, the output shaft 4a is connected to the open switch 2 / close switch 3 and the window glass (see Fig. 7) which are mainly turned on by the operation of the occupant, and the open switch 2 / close switch 3 is turned on in the forward direction. A motor 4 which is supplied with a current in the opposite direction and moves the window glass within a stroke between the fully closed position and the fully open position via the output shaft 4a, drive means 5 for connecting a power source to the motor 4, and output of the motor 4. The motor includes a rotation detecting means 6 for detecting the rotation speed of the shaft 4a and generating a pulse signal, a position reference value storing means 7a for presetting a position reference value corresponding to the vicinity of the fully closed position within the stroke of the window glass, and a motor. Reference value memory 7 having reference time storage means 7b in which a pulse cycle reference time corresponding to the number of rotations of 4 is preset and rotation detection Position counter 8 for counting the current position data of the window glass in the number of pulse signals from the structure 6
The control means 10 is provided with a current value memory 8 having a pulse cycle timer 8b for detecting the rotation state of the motor based on the cycle of the pulse signal from the rotation detection mechanism 6.

Open switch 2 and close switch 3
Is connected to the control means 10 via the input interface circuit a, and the ON switching signals of the open switch 2 and the close switch 3 are transferred to the control means 10.

As is apparent from FIGS. 2 and 3, the motor 4 has one of the armature shafts 4c rotatably accommodated in the motor case 4b, which projects toward the gear case 4d. The gear case 4d of the armature shaft 4c. A worm 4e is formed on the projecting portion to. The armature shaft 4c is provided in an armature (not shown) in the motor case 4b, and the armature is supplied with a current from the driving means 5 to rotate in the forward and reverse directions.

A worm wheel 4f meshes with the worm 4e in the gear case 4d. The worm wheel 4f is rotatably supported by an output shaft support portion 4d1 having a center hole 4f1 formed in a substantially annular shape in the center of the gear case 4d, and a damper mount formed on the upper surface of the worm wheel 4f. Hole 4f2
A shock absorbing damper 4h is non-rotatably fitted therein. The damper hub 4h1 provided at the center of the damper 4h has an oval-shaped hole 4h2 formed concentrically with the worm wheel 4f. The oval hole 4h2 is non-rotatably attached to the output shaft 4a.

A magnetic plate 4j is arranged above the worm wheel 4f. This magnetic plate 4j
Is a disk shape having an outer diameter slightly smaller than the outer diameter of the worm wheel 4f, and an S pole magnetized portion 4j2 and an S pole magnetized portion 4j2 in which an S pole is magnetized on the outer circumference of a base 4j1 provided at the center. Six pairs of magnetized portions 4j2 and N-pole magnetized portions 4j3, which are magnetized N poles that are opposite magnetic poles, are alternately arranged on the circumference. An oval hole 4j4 is also formed in the center of the base 4j1 similarly to the damper 4h, and this oval hole 4j4 is also attached to the output shaft 4a so as not to rotate. The single S-pole magnetized portion 4j2 and the single N-pole magnetized portion 4j3 are in the same angular range on the circumference of the magnetic plate 4j.

On the other hand, an output shaft 4a is rotatably inserted through an output shaft support portion 4d1 provided on the gear case 4d, and one side of the output shaft 4a is connected to a glass lifting mechanism (not shown) outside the gear case 4d. Is being done,
The other side projects into the gear case 4d. Output shaft 4a
In the protruding portion of the gear case 4d into the gear case 4d, there is provided a damper engaging oval shaft portion 4a1 having an outer shape to be inserted into an oval hole 4h2 formed in the damper hub 4h1 of the damper 4h. At the same time, the magnetic plate 4j is provided above the oval-shaped shaft portion 4a1 for locking the damper.
An oval shaft portion 4a2 for locking a magnetic plate, which has an outer shape to be inserted into an oval hole 4j4 formed in the base 4j1, is provided, and the oval shaft portion 4a2 for locking the magnetic plate is provided. A pin mounting groove 4a3 is provided on the upper side of. The output shaft 4a has an oval-shaped shaft portion 4a1 for locking the damper on the inner peripheral side of the worm wheel 4f.
Is inserted into the oval hole 4h2 of the damper 4h, the oval shaft portion 4a2 for locking the magnetic plate is inserted into the oval hole 4j4 of the magnetic plate 4j on the upper side of the worm wheel 4f, and the pin is attached on the upper side of the magnetic plate 4j. A see-through (C) -shaped pin 4k for retaining is fitted in the groove 4a3, and thus is integrally locked to the damper 4h and the magnetic plate 4j.

On the other hand, Hall elements 11 are arranged at three locations on the magnetic plate 4j. As is apparent from FIG. 3, the hall element 11 has a ring shape and is fixed to the lower side of the circuit board 13 in a state of being wrapped in a sliding contact member 12 formed of Teflon resin, and is connected to the outside. Line 11
a, 11b, and 11c are electrically connected to one end side of the leaf spring-like connecting members 14, 15, and 16 on the upper side of the circuit board 13. The hall element 11 is housed in the gear case 4d,
It is covered by the gear case cover 17. The other ends of the leaf spring-like connecting members 14, 15 and 16 are fixed to the grommet 18 and connected to external wirings 19, 20 and 21, respectively. The external wirings 19, 20 and 21 are connected to the control means 10 shown in FIG. 1, respectively. The leaf spring-shaped connecting members 14, 15 and 16 have some elasticity toward the magnetic plate 4j side, which is a direction orthogonal to the longitudinal direction, and the side opposite to the magnetic plate 4j, and thus the sliding contact member. 12
With the magnetic plate 4j in contact with the Hall element 11
In the magnetic field of the magnetic plate 4j are urged toward the side closer to the S pole magnetized portions 4j2 and N pole magnetized portions 4j3. Since the sliding contact member 12 contacts the magnetic plate 4j, the Hall element 1
1 does not directly contact the magnetic plate 4j.

The Hall element 11 is the S of the magnetic plate 4j.
The Hall voltage is induced by the rotating magnetic field generated when the magnetic plate 4j rotates because it is biased to the side closer to the pole magnetized portion 4j2 and the N pole magnetized portion 4j3. The Hall voltage is at a low level every time the pair of S-pole magnetized portions 4j2 and N-pole magnetized portions 4j3 pass by the rotation of the magnetic plate 4j,
Repeat high level. The hall element 11 and the magnetic plate 4j constitute the rotation detecting means 6, and the rotation speed of the magnetic plate 4j is controlled by a pulse signal from the external wiring 19, 20, 21 via the interface circuit a.
The current position of the windshield and the rotation state of the motor 4 are made to be recognized by the control means 10 by transferring to the control unit 10.

The driving means 5 is a power supply connection switching mechanism such as a relay, and is connected to the control means 10 via the output interface circuit b, and a signal from the output stage of the control means 10 drives the motor 4 in the forward direction. The current is supplied to the closed side of the window or the opened side of the window in the opposite direction.

The control means 10 incorporates a microcomputer having a reference value memory 7 and a current value memory 8. The reference value memory 7 is a ROM (read-only memory), and the position reference value storage means 7a provided in the reference value memory 7 stores the stroke corresponding to the stroke between the fully closed position and the fully open position of the window glass. A position reference value corresponding to the vicinity of the fully closed position of the windshield is preset in the area. The position reference value of the position reference value storage means 7a is compared with the current position data from the position counter 8a described later. Here, the vicinity of the fully closed position corresponds to a position having a size smaller than a gap size generated when a finger or the like is caught when the window glass is moving toward the fully closed position.

The reference value memory 7 has a reference time storage means 7b.
The reference time storage means 7b presets a cycle time of a pulse generated by the rotation of the motor 4 as a pulse cycle reference time, and the pulse cycle reference time is a current value described later. The current cycle time of the pulse cycle timer 8b provided in the memory 8 is compared.

The present value memory 8 is a random writing / reading memory (RAM), and a position counter 8a provided in the present value memory 8 detects rotation with the fully closed position of the window glass as a base point and the fully opened position as an end point. The current position data of the window glass is obtained by storing the pulse signal from the means 6 in the ram area at any time, and the current position data stored in the position counter 8a is compared with the position reference value of the position reference value storage means 7a. By doing so, it is determined whether the current position of the windshield is near the fully closed position or not.

Further, the current value memory 8 is provided with a pulse cycle timer 8b, and this pulse cycle timer 8b stores the current cycle time of the pulse signal from the rotation detecting means 6 as needed, and the pulse cycle timer 8b. The current cycle time stored by is compared with the pulse cycle time of the reference time storage means 7b to determine whether the motor 4 is overloaded at the current position of the windshield. The current value memory 8 is also provided with a position buffer 8c, and this position buffer 8c has a function of temporarily storing the number of pulse signals from the rotation detecting means 6.

When the control means 10 is attached after the power source is removed, the window opening side of the motor 4 is maintained until the current cycle time of the pulse cycle timer 8b exceeds the pulse cycle reference time of the reference time storage means 7b. Current is supplied, and when the current cycle time of the pulse cycle timer 8b exceeds the pulse cycle reference time of the reference time storage means 7b, the current supply to the motor 4 is stopped and the position counter 8a.
The first stroke value C1 (stroke value) or the second stroke value C corresponding to the total stroke amount when the window glass moves from the fully closed position to the fully open position.
Set to 2 (stroke value) for initial setting. The first stroke value C1 and the second stroke value C2 are set as different depending on the vehicle type, and correspond to the amount of movement of the windshield from the fully closed position to the fully opened position.

Further, the control means 10 makes the current cycle time of the pulse cycle timer 8b exceed the pulse cycle reference time of the reference time storage means 7b when it is recognized that the close switch 3 is turned on after the initialization. Until the current on the window closing side is supplied to the motor 4 and the current cycle time of the pulse cycle timer 8b exceeds the pulse cycle reference time of the reference time storage means 7b, the count value of the position counter 8a is stored as the position reference value. When the current value on the window opening side reversed is supplied to the motor 4 when it is larger than the position reference value of the means 7a, and the count value of the position counter 8a becomes smaller than the position reference value of the position reference value storage means 7a, the motor. The current supply to 4 is stopped.

Then, the control means 10 detects that the open switch 2 is turned on after the initial setting is performed,
The current on the window opening side is supplied to the motor 4 until the current cycle time of the pulse cycle timer 8b exceeds the pulse cycle reference time of the reference time storage means 7b, and the current cycle time of the pulse cycle timer 8b is stored as the reference time. Means 7b
When the pulse period reference time of 4 is exceeded, the current supply to the motor 4 is stopped.

When the power source is removed in the power window device 1 having such a structure, the counter value and the current cycle stored in the position counter 8a and the pulse cycle timer 8b in the current value memory 8 of the control means 10 are removed. Time is erased. Then, the program shown in FIGS. 4, 5, and 6 is started at the same time when the power source is attached. In this program, step 60 to step 82 are the main routine, and step 50 to step 54 are the interrupt routines executed prior to the main routine when the pulse signal generated by the rotation of the motor 4 is taken in.

Since the program is started and is reset in step 60, and whether or not the initialization flag is set in step 61 is NO, the routine proceeds to step 62, where the current cycle time of the pulse cycle timer 8b and the reference time are stored. A comparison is made with the pulse period reference time of the means 7b. Since the motor 4 is not supplied with current, there is no pulse signal from the rotation detecting means 6 and the result in step 62 is NO. Therefore, in step 63, current is supplied to the motor 4 on the window opening side. Move the windshield from its stopped position to the fully open position. In step 63, the rotation detecting means 6 transfers a pulse signal corresponding to the rotation speed of the armature shaft 4c to the control means 10 by supplying the window opening side current to the motor 4,
The interrupt routine is started, no in step 50,
Since the answer in step 51 is NO, the process proceeds to step 52, where the elapsed time from the time of the previous interrupt is stored in the pulse cycle timer 8b, and then the process proceeds to step 60. If the window glass is moved toward the fully open position with no load applied, it is no as to whether or not the current cycle time of the pulse cycle timer 8b in step 62 is longer than the reference time of the reference time storage means 7b. At 63, the current is supplied to the motor 4 on the window open side, so that the window glass moves to the fully open position.

When the window glass reaches the fully opened position, it is prevented from moving at the stroke end, so that the motor 4 is also restrained from rotating, whereby the current cycle time of the pulse cycle timer 8b in step 62 is stored in the reference time storage means 7.
If it is longer than the reference time of b, the answer is yes. Therefore, the process proceeds to step 64, the current supply to the motor 4 is stopped, and the counter value selected in the microcomputer provided in the control means 10 is selected in step 65. Select a port. This counter value selection port is set for two types corresponding to the total stroke amount of the window glass that differs depending on the vehicle type, and when the first port is selected, step 6
6, the counter value of the position counter 8a is set to a predetermined first stroke value C1, and if the first port is not selected, the value of the position counter 8a is set to a predetermined second stroke value C2 in step 67. . Then, the process goes to step 68 to set an initialization flag which is a recognition flag indicating that the initialization has been made,
Return to step 61.

A first stroke value C is displayed on the position counter 8a.
When 1 (second stroke value C2) is set and the initialization flag is set, the window glass is stopped at the fully open position, and when the close switch 3 is turned on, the result is YES in step 61 and the switch in step 69. The signal is fetched, the value of the position buffer 8c is stored in the position counter 8a in step 70, and it is determined in step 71 whether the close switch 3 is in the on state or not. Therefore, in step 72, the current cycle of the pulse cycle timer 8b is determined. It is determined whether or not the time is longer than the reference time of the reference time storage means 7b. Since the result in step 72 is NO, the current on the window closing side is supplied to the motor 4 in step 73, and the process returns to step 61. Since the current on the window closing side is supplied to the motor 4, the window glass is moved from the fully opened position to the fully closed position.

The pulse signal from the rotation detecting means 6 is transferred to the control means 10 by supplying the current on the window closing side to the motor 4, so that the position counter 8a.
Starts subtraction from the set first stroke value C1 (second stroke value C2), and an interrupt routine is started. In step 50, YES, in step 53, the position buffer is decremented, and in steps 52 and 60, Transition. When the window glass moves toward the fully closed position, if the movement of the window glass is not loaded, the result is YES in step 61, the switch signal is acquired in step 69, the position counter is stored in step 70, and step 71 is performed. Yes in step 72 and no in step 72,
In step 73, the current on the window closing side is supplied to the motor 4, and the process returns to step 61.

While the window glass is moving toward the fully closed position, if the window glass is prevented from moving due to pinching or the like, the current cycle time of the pulse cycle timer 8b in step 72 is the reference time. Since it is YES whether the time is longer than the reference time of the storage means 7b, the routine proceeds to step 74, where it is judged whether or not the count value of the position counter 8a is smaller than the reference value of the position reference value storage means 7a. . Since the reference value of the position reference value storage means 7a is set to correspond to the vicinity of the fully closed position of the window glass, if the window glass is not closer to the fully closed position than the vicinity of the fully closed position, in step 74. When the result is NO, the routine proceeds to step 75, where the reversed current on the window opening side is supplied to the motor 4 and the routine returns to step 61. For this reason, if pinching occurs when the windshield moves from the fully open position to the fully closed position, the windshield is moved in the reverse direction toward the fully opened position unless the windshield has reached near the fully closed position. To avoid pinching.

When the window glass moves toward the fully closed position and there is no obstruction to the movement due to pinching or the like, and the window glass reaches the vicinity of the fully closed position, step 7
Since the answer in step 2 is yes and the answer in step 74 is yes, the current supply to the motor 4 is stopped in step 76, the counter value of the position counter 8a is reset in step 77, and the process returns to step 61. Since the motor 4 continues to rotate by inertia even after the current supply is stopped, the motor 4 shuts off the windshield at the fully closed position and stops the windshield at the fully closed position.

When the open switch 2 is turned on when the window glass is in the fully closed position, the answer is YES in step 61, the switch signal is accepted in step 69, the position is stored in the position counter in step 70, and the answer is NO in step 71. Therefore, the process proceeds to step 78. If the answer is yes in step 78, the current cycle time of the pulse cycle timer 8b is in step 79.
It is determined whether it is longer than the reference time of b. Since the result in step 79 is NO, the process moves to step 80, the current on the window opening side is supplied to the motor 4, and the process returns to step 61. Since the electric current on the window opening side is supplied to the motor 4, the window glass starts moving from the fully closed position to the fully opened position, and the rotation detection means 6 transfers the pulse signal to the control means 10. At the same time, the interrupt routine is started. No in step 50, step 51
In step 54, the position buffer is incremented and the main routine from step 61 is started via step 52. At this time, if the movement of the window glass is not blocked, the result is YES in step 61, the switch signal is acquired in step 69, the position is stored in the position counter in step 70, NO in step 71, and YES in step 78. Since the answer in step 79 is NO, the current on the window opening side is supplied to the motor 4 in step 80, and the process returns to step 61.

If the movement of the window glass is blocked when the window glass moves toward the fully open position, the current cycle time of the pulse cycle timer 8b in step 79 is longer than the reference time of the reference time storage means 7b. Since the answer is YES, the process proceeds to step 81, the current supply to the motor 4 is stopped, and the process returns to step 61.
Since the current supply to the motor 4 is stopped, the windshield makes an emergency stop at that position.

If the open switch 2 is turned on and the open switch 2 is turned off while moving the window glass toward the fully open position, the answer is YES in step 61, the switch signal is acquired in step 69, and the step 70 is in operation. The position counter is stored, the result in step 71 is NO, and the result in step 78 is NO. Therefore, in step 82, the current supply to the motor 4 is stopped. Since the current supply to the motor 4 is stopped, the window glass stops at that position.

[0035]

As described above, the motor control method for the power window device according to the present invention is configured as described above. Therefore, when the power source is connected, the window glass is automatically moved to the fully open position. In addition, the preset stroke value is set in the position counter to perform the initial setting, so there is no need to perform re-plumbing unlike the conventional ones, and the motor can be operated reliably without the trouble of re-programming. It has an excellent effect that it can be done.

[Brief description of drawings]

FIG. 1 is a block diagram of a power window device using an embodiment of a motor control method for a power window device according to the present invention.

FIG. 2 is an external configuration diagram of each component of the motor in the power window device shown in FIG.

FIG. 3 is a vertical cross-sectional side view around a rotation detecting unit in the motor shown in FIG.

FIG. 4 is a flowchart illustrating the operation of the motor control method for the power window device according to the present invention.

FIG. 5 is a flowchart illustrating the operation of a motor control method for a power window device according to the present invention.

FIG. 6 is a flowchart illustrating the operation of a motor control method for a power window device according to the present invention.

FIG. 7 is a block diagram of a power window device using a conventional motor control method for the power window device. 1 Power window device 2 Open switch 3 Close switch 4 Motor 4a Output shaft 5 Driving means 6 Rotation detecting means 7 Reference value memory 7a Position reference value storage means 7b Reference time storage means 8 Current value memory 8a Position counter 8b Pulse period timer 10 Control Means C1, C2 (stroke value) first stroke value, second stroke value

Claims (2)

[Claims] 1. An output shaft connected to an open switch / close switch which is turned on by an operation of an occupant, and an output shaft connected to a window glass, and a forward / backward current is supplied by turning on the open switch / close switch. A motor that moves the window glass within a stroke between the fully closed position and the fully open position via a drive unit, a drive unit that connects a power source to the motor, and a pulse signal is generated by detecting the rotation speed of the output shaft of the motor. A pulse cycle for detecting the rotation state of the motor based on the current cycle time of the pulse signal from the rotation detecting means and a position counter for counting the current position data of the window glass by the pulse signal from the rotation detecting means. Current value memory with timer and fully closed position within the stroke of the window glass The control means is provided with a reference value memory having a position reference value storage means for presetting a position reference value corresponding to the vicinity and a reference value memory having a reference time storage means for presetting a pulse cycle reference time corresponding to the number of rotations of the motor. When the power supply is connected, the control means supplies the current on the window opening side to the motor and the pulse cycle until the current cycle time of the pulse cycle timer exceeds the pulse cycle reference time of the reference time storage means. When the current cycle time of the timer exceeds the pulse cycle reference time of the reference time storage means, current supply to the motor is stopped and the count value of the position counter is set to a predetermined stroke value corresponding to the total stroke amount of the window glass. After setting and performing initial setting, when the ON of the close switch is recognized after the initial setting is performed, The current on the window closing side is supplied to the motor until the current cycle time of the pulse cycle timer exceeds the pulse cycle reference time of the reference time storage means, and the current cycle time of the pulse cycle timer is the pulse cycle of the reference time storage means. When the count value of the position counter is larger than the position reference value of the position reference value storage means when the reference time is exceeded, a current on the window opening side is supplied to the motor, and the count value of the position counter is stored in the position reference value storage means. A motor control method for a power window device, wherein control is performed to stop current supply to the motor when the value becomes smaller than a position reference value. 2. When the opening of the open switch is recognized by the control means, the window open side current is supplied to the motor until the current cycle time of the pulse cycle timer exceeds the pulse cycle reference time of the reference time storage means. Along with
2. The motor control method for a power window device according to claim 1, wherein control is performed to stop the current supply to the motor when the current cycle time of the pulse cycle timer exceeds the pulse cycle reference time of the reference time storage means.