JP2000188895A - Motor controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the need of a large-capacitance backup capacitor from a motor controller by providing a nonvolatile memory in which a plurality of rotation signals given from a motor rotation detecting means can be written electrically after the signals are converted into positional data when the motor gets into a locked state. SOLUTION: Even when a power switch 20 is switched to a turning-off state, the present position of a window glass is detected by using the positional data of the glass written in a memory and the superscribed positional data of the glass. Since the voltage VB of a motor 5 is not dropped when memory writing is performed, no large-capacitance backup capacitor is required as compared with the case where the memory writing is performed in a short time after the switch 20 is turned off. Therefore, the capacitances of first and second backup capacitors C1 and C2 provided to a power supply block 9 can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor control device for controlling an opening / closing device such as a power window of an automobile.

[0002]

2. Description of the Related Art As a motor control device for controlling an opening / closing device of an automobile, a rotation signal of a motor is fetched as position data into a nonvolatile memory which is built in a controller and can be electrically written and erased. In addition, there is known an apparatus that indirectly detects the current position of a window glass.

In the above-described motor control device, as shown in FIG. 7, the motor is operated when an open switch (close switch) is turned on at a time a. When the motor starts to operate, the motor voltage VB decreases with respect to the no-load state. When the motor starts operating, a pulse signal from a rotation sensor built in the motor is taken into the controller. When the window glass reaches the stroke end at the time b after the time a, the motor is locked by preventing the movement of the window glass, so that the motor voltage VB falls further than during operation. By locking the motor, at time c after time b, the controller cuts off the current supply to the motor, and the motor voltage VB returns to the no-load state. Then, at time d after time c, the power supply (IG)
When the switch is turned off, the power supply to the controller is cut off, and the motor voltage VB decreases over time. When the motor voltage VB falls below the memory write voltage V0 at time e after time d, the controller starts writing the number of pulse signals given from the rotation sensor to the non-volatile memory, and returns to time after time e. At f, the writing is performed within the writable time t until the motor voltage VB falls below the reset voltage RES. The memory write voltage V0 is equal to or higher than the supply voltage to the circuit such that the power supply voltage in the circuit is equal to or higher than the reset voltage RES of the microcomputer, and is equal to or lower than the voltage drop when the motor is locked at the minimum operating voltage of the specification. Needs to be

[0004]

However, in the above-described motor control apparatus, when the power supply voltage of the controller is cut off, the position data of the window glass is written to the nonvolatile memory. When the power switch is turned off, the power supply voltage of the controller is already reduced to a voltage value lower than the normal operation voltage, so that the amount of charge required for writing is insufficient, and only a single position data is written. Had become. For this reason, a large-capacity backup capacitor is used to secure enough time to write the position data of the window glass to the non-volatile memory, and the large-capacity backup capacitor must be built into the controller. As a result, there is a problem that the outer shape of the controller becomes large.

Further, in the above motor control device, when the power switch is turned off while the motor is operating, the operating voltage of the microcomputer built in the controller is notwithstanding that the rotation signal of the motor is being input. As a result, the writing becomes impossible, and the microcomputer writes position data shifted from the actual position of the window glass. Therefore, a large-capacity backup capacitor is used so that writing of position data can be continued until the motor stops.
As described above, there is a problem that the outer shape of the controller becomes large.

[0006]

SUMMARY OF THE INVENTION A motor control device according to the present invention can reliably write a plurality of position data without requiring a large-capacity backup capacitor and can obtain a compact external shape. It is intended to provide.

[0007]

Configuration of the Invention

[0008]

According to a first aspect of the present invention, there is provided a motor control device comprising: a power switch; a motor drive circuit electrically connected to the power switch; and a motor drive circuit electrically connected to the motor drive circuit. A motor that drives the load to open or close by the operation of the motor drive circuit, and a motor rotation detection unit that generates a rotation detection signal by the rotation of the motor; An open switch that generates a command signal, a close switch that generates an ascending command signal when switched on, and a power switch, a motor drive circuit, a motor rotation detection unit, an open switch, and an open switch that are electrically connected, respectively. When a lowering command signal is given from the open switch, a current for driving the load to the open side is supplied to the motor via the motor drive circuit. On the other hand, when a rising command signal is given from the closing switch, a controller for supplying a current for driving the load to the closing side to the motor via the motor driving circuit and the motor rotation detecting means when the motor is locked. It is characterized in that a configuration is provided in which a nonvolatile memory capable of converting a given rotation signal into position data and electrically writing a plurality of rotation signals is provided.

In the motor control device according to a second aspect of the present invention, the controller includes a control block for erasing the position data written in the nonvolatile memory each time the open switch or the close switch is turned on. It is characterized by having the configuration described above.

[0010] In the motor control device according to claim 3 of the present invention, the controller includes a control block for overwriting the position data in the nonvolatile memory every time the open switch or the close switch is turned off. It is characterized by having a configuration.

According to a fourth aspect of the present invention, in the motor control device, the controller is provided with a pulse interval measuring block for measuring the period of the rotation signal given by the motor rotation detecting means. I have.

In the motor control apparatus according to the fifth aspect of the present invention, the controller locks the motor by comparing the cycle value of the rotation signal given from the pulse interval measurement block with a predetermined judgment value. It is characterized in that it has a configuration including a motor lock determination block for performing determination.

[0013] In the motor control device according to claim 6 of the present invention, when the time during which the open switch or the close switch is turned on exceeds a predetermined value, the controller outputs the descending command signal or the ascending command signal. After that, even after the open switch or the close switch is turned off, the control block is provided with a one-touch operation storage block that continuously supplies a descending command signal or an ascending command signal to the control block. Features.

[0014]

In the motor control device according to the first aspect of the present invention, when the motor is locked, the rotation signal given by the motor rotation detecting means is converted into position data and stored in the nonvolatile memory. Therefore, a plurality of position data are written when the motor voltage is not cut off. Therefore, since the position data is not written during the fall of the power supply voltage after the power switch is turned off, the writing of the position data is performed in comparison with the case where the writing is performed after the power switch is turned off. It does not require a large-capacity backup capacitor to secure time.

In the motor control device according to a second aspect of the present invention, the control block of the controller deletes the position data written in the nonvolatile memory every time the open switch or the close switch is turned on. Therefore, in addition to the operation of the first aspect, the latest position data is always used for each operation of the open switch and the close switch for writing to the nonvolatile memory, and it can be determined that the motor has been operated. For example, even when the microcomputer runs out of control, malfunction due to incorrect glass position data can be avoided.

In the motor control device according to a third aspect of the present invention, the control block of the controller overwrites the position data in the nonvolatile memory each time the open switch or the close switch is turned off. Therefore, in addition to the effects of claims 1 and 2, the locked state is determined by the position data written when the motor is locked and the position data overwritten when the open switch and the close switch are turned off. The position data at the position where the window glass has reliably reached the stroke end is written even if the motor has slightly rotated.

In the motor control device according to a fourth aspect of the present invention, the period of the rotation signal given by the motor rotation detecting means increases when the motor is locked, and the pulse interval measurement block of the controller detects the motor rotation. The period of the rotation signal given by the means is measured. Therefore, in addition to the operation of the first aspect, the load state of the motor is detected by detecting the period of the rotation signal by the pulse interval measurement block.

In the motor control device according to a fifth aspect of the present invention, the motor lock determination block of the controller compares a period value given from the pulse interval measurement block with a predetermined determination value, and determines a pulse interval measurement block. When the given cycle value exceeds a predetermined determination value, writing to the non-volatile memory is executed by the control block. Therefore, even if the power switch is turned off while the motor is locked, the position data of the glass is not lost.

According to a sixth aspect of the present invention, in the motor control device, the one-touch operation storage block of the controller is configured such that when the open switch or the close switch is turned off after the open switch or the close switch is turned on for a long time, the open switch or the close switch is turned on. When the switching is performed, the stored descending command signal or ascending command signal is continuously supplied to the control block. Therefore, in addition to the operation of the first aspect, since the command signal generated from the open switch or the close switch is held by the one-touch operation storage block, an additional switch such as an auto switch is required in addition to the open switch and the close switch. And not.

[0020]

1 to 6 show one embodiment of a motor control device according to the present invention.

The illustrated motor control device 1 includes an open switch (SW) 2, a close switch (SW) 3, and a switch (S).
W) signal input block 4, motor 5, rotation sensor 6, motor drive output block 7, pulse signal input block 8,
Power supply block 9 (shown in FIG. 2), conversion block 1
0 (shown in FIG. 2), central processing circuit (controller) MCU, EEPROM external memory block MEM,
The reset circuit 11 (shown in FIG. 2) includes a one-touch operation storage block 12, an EEPROM memory address counter ADC, and a central processing circuit MCU.
T, clock generator 13, control block 14, input / output control block 15, pulse interval measurement block 16,
Pulse interval measurement timer TM2, motor lock determination block 17, EEPROM write interval timer TM
1. Built-in pulse counter glass position storage WINDCT.

The motor control device 1 shown in FIG. 1 is specifically shown in a circuit diagram shown in FIG.

One of the open / close switches 2 and 3 is electrically connected to a power source 21 as a battery through a power switch (ignition switch) 20, and the other is electrically connected to the switch signal input block 4. The open switch 2 generates a descending command signal by being turned on. On the contrary, the close switch 3 generates an ascending command signal by being turned on.

The switch signal input block 4 includes a resistor R
6, a resistor R7. The resistor R6 is electrically connected to the open switch 2, and the resistor R7 is electrically connected to the closed switch 3.

In the switch signal input block 4, when the open switch 2 is turned on while the power switch 20 is in the on state, a lowering command signal (high level) is passed through a resistor R6 via a voltage clamp circuit (not shown). The signal is supplied to a first input port IN1 provided in the central processing unit MCU.
On the other hand, when the close switch 3 is turned on while the power switch 20 is in the on state, the rising command signal (high level) is sent to the central processing circuit MCU via the resistor R7 via a voltage clamp circuit (not shown). To the provided second input port IN2.

The motor 5 has first and second brush terminals 5
a and 5b are provided, and an armature shaft 5c provided on an armature (not shown) is connected to the window glass 30 via a rubber damper (not shown) and a glass elevator (not shown).

The motor 5 has a first brush terminal 5a electrically connected to a power source 21 and a second brush terminal 5a.
Since the armature shaft 5c rotates forward when b is connected to the ground, the window glass 30 is opened by the forward rotation of the armature shaft 5c. On the contrary, since the second brush terminal 5b is electrically connected to the power supply 21 and the first brush terminal 5a is connected to the ground, the armature shaft 5c rotates in the reverse direction. The window glass 30 is closed by rotation. The first and second brush terminals 5a and 5b of the motor 5 are electrically connected to the motor drive output block 7.

The motor drive output block 7 includes a first relay RL1, a first switching transistor TR1,
A second relay RL2 and a second switching transistor TR2 are provided.

The first relay RL1 includes a first relay coil RL1-1, a first relay normally open contact RL1-2, a first normally closed contact RL1-3, and a first relay movable contact RL1.
-4 is provided. First relay coil RL1-1
Has an upstream side connected to the power switch 20 and a downstream side connected to the collector of the first switching transistor TR1. The first relay normally open contact RL1-2 is connected to the power switch 20. First relay normally closed contact R
L1-3 is connected to the ground. The first relay movable contacts RL1-4 are connected to a first brush terminal 5a of the motor 5.

First switching transistor TR1
Is an emitter-grounded NPN transistor, whose base is connected to a first output port D1 provided in the central processing circuit MCU through a resistor (not shown), and whose collector is downstream of the first relay coil RL1-1 as described above. Connected to the side.

The second relay RL2 includes a second relay coil RL2-1, a second relay normally open contact RL2-2, a second normally closed contact RL2-3, and a second relay movable contact RL2.
-4 is provided. Second relay coil RL2-1
Has an upstream side connected to the power switch 20, and a downstream side connected to the collector of the second switching transistor TR2. The second relay normally open contact RL2-2 is connected to the power switch 20. The second relay normally closed contact RL2-3 is connected to the ground. The second relay movable contact RL2-4 is connected to the second brush terminal 5b of the motor 5.
It is connected to the.

Second switching transistor TR2
Is a common-emitter NPN transistor whose base is connected to a second output port D2 provided in the central processing unit MCU through a resistor (not shown), and whose collector is downstream of the second relay coil RL2-1 as described above. Connected to the side.

In the motor drive output block 7, when a high level is given from the first output port D1 of the central processing circuit MCU and a low level is given from the second output port D2 of the central processing circuit MCU, the first Is turned on, the first relay coil RL1-1 is excited, and the first relay movable contact RL is turned on.
1-4 are electrically connected from the first relay normally closed contact RL1-3 to the first relay normally open contact RL1-2. Then, the current of the power supply 21 is changed to the first relay normally open contact RL1-
2, the first relay movable contact RL1-4, the first of the motor 5
Brush terminal 5a, the second brush terminal 5b of the motor 5,
Since the current flows to the second relay movable contact RL2-4, the second relay normally closed contact RL2-3, and the ground, the armature shaft 5c of the motor 5 rotates forward.

On the contrary, the motor drive output block 7
In this case, the high level is given from the second output port D2 of the central processing circuit MCU, and the central processing circuit MCU
When the low level is given from the first output port D1, the second switching transistor TR2 is turned on, the second relay coil RL2-1 is excited, and the second relay movable contact RL2-4 is turned on. The relay normally closed contact RL2-3 is electrically connected to the second relay normally open contact RL2-2. Then, the current of the power supply 21 is changed to the second relay normally open contact RL2-2 and the second relay movable contact RL2.
-4, the second brush terminal 5b of the motor 5, the first brush terminal 5a of the motor 5, the first relay movable contact RL1-
4. Since the first relay normally closed contact RL1-3 flows to the ground, the armature shaft 5c of the motor 5 rotates in the reverse direction.

The rotation sensor 6 is a rotation detector such as a rotary encoder or a tachogenerator.
Is disposed near the armature shaft 5c.
This rotation sensor 6, as shown in FIG.
Is divided by the resistor 9 and the Zener diode ZD
Since the voltage level limited by 3 is applied to the upstream side, when the armature shaft 5c of the motor 5 is rotating, a pulse-like rotation signal is generated in accordance with the rotation. The pulse signal generated by the rotation sensor 6 is given to a pulse signal input block 8.

The pulse signal input block 8 includes a resistor R1
0 and a capacitor C5. The pulse signal input block 8 stabilizes the pulse signal supplied from the rotation sensor 6 and supplies the stabilized pulse signal to a third input port IN3 provided in the central processing circuit MCU through a voltage clamp circuit (not shown).

The power supply block 9 includes a diode D1, a resistor R1, a zener diode ZD1, a first backup capacitor C1, and a second backup capacitor C.
2. It comprises a capacitor C4 for preventing oscillation and a power supply IC22.

In the power supply block 9, the anode of the diode D1 is connected to the power supply switch 20, the other end of the second backup capacitor C2 whose other end is grounded is connected to the operating power supply VCC together with the power supply line 9a. 9a is the regulator port R of the central processing circuit MCU
The EG and the EEPROM are connected to an external memory block (non-volatile memory) MEM.

In the power supply block 9, when the power switch 20 is on, the first backup capacitor C
1 is charged, the power supply IC 22 is turned on, the second backup capacitor C2 is charged, and the central processing circuit MC
A predetermined drive voltage is applied to the U regulator port REG and the EEPROM external memory block MEM. Then, in the power supply block 9, when the power switch 20 is turned off, the first backup capacitor C1 and the second backup capacitor C2 are respectively discharged, and the discharge voltage is reduced to the regulator port REG of the central processing circuit MCU. This is given to the EEPROM external memory block MEM.

EEPROM external memory block MEM
(Electrically erasable programma-ble ROM) is an electrically rewritable ROM, and is a non-volatile memory that retains its stored contents even in a non-energized state. This EEP
The ROM external memory block MEM includes a central processing circuit MC.
The glass position data provided from the serial output port SOUT provided in U is stored in a predetermined memory area, and the glass position data is taken out from the predetermined memory area via the serial input port SIN.

The conversion block 10 includes resistors R2, R3,
R4, R5, Zener diode ZD2, capacitor C3
Is provided.

In the conversion block 10, the resistance R2 and the resistance R
3 is applied to the conversion port A / D provided in the central processing unit MCU by applying a signal of a voltage level limited by the Zener diode ZD2, integrated by the resistor R4 and the capacitor C3, and adjusted by the resistor R5.

The reset circuit 11 resets the central processing unit MCU when the drive voltage drops.

The one-touch operation storage block 12 includes a down command signal (high level) given from the switch signal input block 4 to the first input port IN1 when the open switch 2 is turned on, and the close switch 3 being turned on. As a result, the input time of the rising command signal (high level) given from the switch signal input block 4 to the second input port IN2 is detected.

In the one-touch operation storage block 12, the lowering command signal given from the open switch 2 and the closing switch 3
When each input signal of the ascending command signal given from becomes longer than a predetermined time, each input signal is stored by setting a one-touch flag by a program separately defined from that described later. And, after each input signal is not given,
The one-touch operation is performed by continuously supplying the stored command signals to the control block 14.

EEPROM memory address counter AD
CT is a counter for giving an address signal to and from the control block 14.

The clock generator 12 manages the time of the program to be executed.

The pulse interval measuring block 16 detects each rising and falling of the pulse signal supplied from the pulse signal input block 8.

The pulse interval measurement timer TM2 starts when the pulse interval measurement block 16 detects the rising edge of the pulse signal, and turns off when the falling edge of the pulse signal is detected. One cycle time is detected. The detected cycle time of the pulse signal is given to the motor lock determination block 17. In the pulse interval measurement timer TM2, the motor 5
Is directly detected by the cycle of the pulse signal generated by the motor 5.

The motor lock determination value XLOCK is a predetermined value, and is used to detect that the rotation of the armature shaft 5c of the motor 5 is restricted. The motor lock determination value XLOCK is held in a ROM (not shown) built in the central processing circuit MCU. The motor lock determination value XLOCK is supplied to the motor lock determination block 17 by the pulse interval measurement timer TM.
2 is compared with the cycle time detected.

The motor lock determination block 17 compares the cycle time detected by the pulse interval measurement timer TM2 with the motor lock determination value XLOCK to determine the motor lock determination value XLOCK by the cycle time detected by the pulse interval measurement timer TM2. When exceeding, a determination signal is given to the control block 14. The determination signal given by the motor lock determination block 17 is transmitted to the control block 14 by an EEPROM.
This is used as a timing for writing data into the external memory block MEM.

The EEPROM write interval timer TM1 is controlled by the control block 14
EEPROM external memory block M performed through step 5
It has the function of writing to the EM at regular intervals.
At this time, the EEPROM write interval timer T
M1 measures the elapse of the interval time by comparing it with a predetermined value XMEMWR.

Pulse counter glass position storage WINDC
T counts the number of glass position data to be written into the EEPROM external memory block MEM in the control block 14. The reset port RES provided in the central processing unit MCU is connected to the reset circuit 11.

In the control block 14, when a down command signal is supplied from the switch signal input block 4, in the central processing unit MCU, the first output port D1 goes high and the second output port D2 goes low. This turns on the first switching transistor TR1. On the other hand, when an ascending command signal is given from the switch signal input block 4, the second output port D1 becomes high level and the first output port D2 becomes low level in the central processing circuit MCU. The second switching transistor TR2 is turned on.

Further, in the control block 14, when a lowering command signal is given from the switch signal input block 4, the glass position data stored in the EEPROM external memory block MEM is erased through the input / output control block 15 and the memory is erased. Switch signal input block 4
When a lowering command signal is given, the memory of the glass position data stored in the EEPROM external memory block MEM is erased through the input / output control block 15.

The control block 14 gives a write command to the input / output control block 15 when the determination signal is given from the motor lock determination block 17. Then, the control block 14 controls the switch signal input block 4
When the lowering command signal (high level) and the rising command signal (high level) given by the controller disappear, the overwriting command is given to the input / output control block 15.

The input / output control block 15 responds to a write command given from the control block 14 by an EEPROM.
At every time determined by the write interval timer TM1, the number of pulse signals (glass position data) given from the pulse counter glass position storage WINDCT to the address determined by the EEPROM memory address counter ADCT in the EEPROM external memory block MEM. It has the function of writing to memory. In addition, the input / output control block 15 responds to the overwrite command given from the control block 14 by a pulse signal given from the pulse counter glass position storage WINDCT to the address determined by the EEPROM memory address counter ADCT in the EEPROM external memory block MEM. It has the function of writing data to the memory (number of glass position data). In addition, the input / output control block 15 responds to the read command given from the control block 14 by the EE.
It has a function of reading the number of pulse signals (glass position data) at an arbitrary address in the PROM external memory block MEM.

In the central processing unit MCU, the power switch 2
0, the window glass 30 is closed, and as shown in FIG. 3, when the open switch 2 is turned on at time A, the switch signal input block 4 issues a lowering command to the control block 14. When the signal is supplied, the control block 14 (the first output port D)
1) Since the high level is given to the base of the first switching transistor TR1 of the motor drive output block 7, the armature shaft 5c of the motor 5 rotates forward and the window glass 30 opens. At this time, since the lowering command signal is given from the open switch 2 to the control block 14, the control block 14 erases the memory of the glass position data stored in the EEPROM external memory block MEM through the input / output control block 15. When a lowering command signal is given from the open switch 2 to the control block 14, the glass position data stored in the EEPROM external memory block MEM is erased from the memory, and the cause of the malfunction due to the existing position data is eliminated.

In the central processing unit MCU, when the descent command signal generated by the open switch 2 becomes longer than a predetermined time, the one-touch open flag is set in the program. The command signal is stored and given to the control block 14. In the central processing unit MCU, the one-touch operation is determined based on the time of the descent command signal generated by the open switch 2, so that an additional switch such as an auto switch other than the open switch 2 is not required.

At time A, when the motor 5 starts rotating forward, the rotation sensor 6 generates pulse signals at substantially the same interval, and the pulse signal input block 8, the pulse interval measurement block 16, and the pulse interval measurement timer TM2 operate. 1
The cycle time of each successive pulse signal is detected.

At time B after time A, when window glass 30 reaches full open position F, window glass 3
0 is prevented from moving, and the rotation speed of the armature shaft 5c of the motor 5 decreases. When the rotation speed of the armature shaft 5c of the motor 5 decreases, the cycle time of the pulse signal generated by the rotation sensor 6 increases.

Thereafter, at time C when the cycle time detected by the pulse interval measurement timer TM2 exceeds the motor lock determination value XLOCK, the motor lock determination block 17 provides a determination signal to the control block 14, A write command is given to the control block 15, and the EEPROM write interval timer TM1
Memory writing with the number of rotation signals (glass position data) given from the pulse counter glass position memory WINDCT at the address determined by the EEPROM memory address counter ADCT in the EEPROM external memory block MEM at every time determined by Done.

When the window glass 30 reaches the fully open position G, the rotation of the armature shaft 5c of the motor 5 is restricted, and at time D after time C, the open switch 2 is turned off, the control block 14 turns on. Since an overwrite command is given to the output control block 15, EEPRO
In the M external memory block MEM, memory writing is performed at the address determined by the EEPROM memory address counter ADCT with the pulse signal number (glass position data) given from the pulse counter glass position storage WINDCT. When the open switch 2 is turned off, the position data is overwritten in the EEPROM external memory block MEM, so that a plurality of position data written when the armature shaft 5c of the motor 2 is locked is opened. Even when the armature shaft 5c of the locked motor 5 continues to rotate slightly due to the position data overwritten when the switch and the close switch are turned off, the position where the window glass 30 reaches the stroke end is ensured. Since the position data is written, there is no deviation in the position estimation of the window glass 30.

Then, even if the power switch 20 is turned off at the time E after the time D, the glass position data and the time
The current position of the window glass 30 is detected using the overwritten glass position data. Therefore, the voltage VB of the motor 5 when memory writing is performed
Does not decrease as in the case where the power switch 20 is turned off, so that a backup capacitor having a larger capacity is used as compared with the case where memory writing is performed using a short time after the power switch 20 is turned off. Although not necessary, the first backup capacitor C1 and the second backup capacitor C2 provided in the power supply block 9 have small capacities.

On the other hand, in the central processing unit MCU, the window glass 30 is open while the power switch 20 is turned on, and the close switch 3 is turned on at time A as shown in FIG. As a result, when a rising command signal is given from the switch signal input block 4 to the control block 14, a high level is applied from the control block 14 (second output port D2) to the base of the second switching transistor TR2 of the motor drive output block 7. The armature shaft 5 of the motor 5
c rotates in the reverse direction, and the window glass 30 closes. At this time,
Since the rising command signal is given from the close switch 3 to the control block 14, the control block 14 sends the signal to the EEPROM external memory block MEM through the input / output control block 15.
Of the glass position data stored in the memory is erased. The rising command signal from the closing switch 3 is the control block 1.
4, the glass position data stored in the EEPROM external memory block MEM is erased from the memory, and a malfunction due to the existing position data is eliminated.

In the central processing unit MCU, when the rising command signal generated by the closing switch 3 becomes longer than a predetermined time, the one-touch closing flag is set in the program. The command signal is stored and given to the control block 14. In the central processing unit MCU, an additional switch such as an auto switch is not required in addition to the close switch 3 because the one-touch operation is determined based on the time of the rising command signal generated by the close switch 3.

At time A, when the motor 5 starts to rotate in the reverse direction, the rotation sensor 6 generates pulse signals at substantially the same interval, and the pulse signal input block 8, the pulse interval measurement block 16, and the pulse interval measurement timer TM2 operate. 1
The cycle time of each successive pulse signal is detected.

At time B after time A, when window glass 30 reaches fully closed position F, window glass 3
0 is prevented from moving, and the rotation speed of the armature shaft 5c of the motor 5 decreases. When the rotation speed of the armature shaft 5c of the motor 5 decreases, the cycle time of the pulse signal generated by the rotation sensor 6 increases.

Thereafter, at time C when the cycle time detected by the pulse interval measurement timer TM2 exceeds the motor lock determination value XLOCK, the motor lock determination block 17 provides a determination signal to the control block 14, A write command is given to the control block 15, and the EEPROM write interval timer TM1
Is written in the EEPROM external memory block MEM at the address determined by the EEPROM memory address counter ADCT with the number of rotation signals (glass position data) given from the pulse counter glass position storage WINDCT at every time determined by the above. Will be

When the window glass 30 reaches the fully closed position F, the rotation of the armature shaft 5c of the motor 5 is restricted, and at time D after time C, the closing switch 3 is turned off, the control block 14 Since an overwrite command is given to the input / output control block 15, the EEPRO
In the M external memory block MEM, memory writing is performed at the address determined by the EEPROM memory address counter ADCT with the pulse signal number (glass position data) given from the pulse counter glass position storage WINDCT. When the close switch 3 is turned off, the position data is overwritten in the EEPROM external memory block MEM, and the position of the window glass is changed by the position data already written in the EEPROM external memory block MEM at the previous time C. There is no deviation in the position estimation of 30.

Then, even if the power switch 20 is turned off at the time E after the time D, the glass position data and the time
, The current position of the window glass 30 is detected using the overwritten crow position data. Therefore, the voltage VB of the motor 5 when memory writing is performed
Does not decrease as in the case where the power switch 20 is turned off, so that a backup capacitor having a larger capacity is used as compared with the case where memory writing is performed using a short time after the power switch 20 is turned off. Although not necessary, the first backup capacitor C1 and the second backup capacitor C2 provided in the power supply block 9 have small capacities.

The above-described motor control device 1 performs a control operation in accordance with the programs shown in FIGS. 4 and 5 show a switch signal fetching routine, and FIG. 6 shows a writing routine to the EEPROM external memory block MEM. In this program, the one-touch open flag and the one-touch close flag are set in advance in another program (not shown), and are reset in another program (not shown) when the armature shaft 5c of the motor 5 is locked by restricting rotation. You.

When the power switch 20 is turned on and the window glass 30 is in the fully-closed position F, as shown in FIG.
When the open switch 2 is turned on at the time A shown in FIG. 5, a base command is given to the first switching transistor TR1 of the motor drive output block 7 by receiving the descending command signal into the control block 14, so that the motor 5 The armature shaft 5c starts to rotate forward and the window glass 30 is driven to the open side. Since the determination in step 201 indicates that the "open switch 2 is on", the process proceeds to step 207 and the determination in step 207 is executed. In step 207, it is determined whether or not the memory write has been executed when the motor 5 was locked in the previous routine by determining whether or not the motor OFF write flag FMWROFF has been set. Since the determination in step 207 indicates that “write flag FMWROFF when motor is off is set”, the process proceeds to step 222, and the determination in step 222 indicates that “memory erase flag FMERASE is not set” and the process proceeds to step 223.

Step 22 shifted from step 222
In step 3, "Reset memory writing flag FMWRNOW" is performed, and the process proceeds to step 224.
4, the "memory write completion flag FMWREND"
Is reset, and the process proceeds to step 225.
By setting the “memory erase flag FMERASE” in step 25, “the memory erase of the glass position data stored in the EEPROM external memory block MEM” is performed by the control block 14 through the input / output control block 15, and the process proceeds to step 226. And step 22
In step 6, "Write flag FMWRO at motor on"
N is reset ", and the routine proceeds to step 227. In step 227, the" motor-off write flag FMW
ROFF is reset ", and the routine proceeds to step 228. In step 228, a routine is executed in which" all glass position data stored in the EEPROM external memory block MEM is cleared "and the routine returns to step 201.

In the next routine, since the write flag FMWROFF with the motor off is reset in the previous routine, the open switch 2 is turned on and the window glass 30 is moved to the open side. In the middle, the process proceeds from step 201 to step 207, and the process proceeds to step 214 in the determination in step 207. Since the determination in step 214 is "the memory writing flag FMERNOW is not set", the process proceeds to step 215. In the determination at 215, since the cycle time detected by the pulse interval measurement timer TM2 has not exceeded the motor lock determination value XLOCK, the process proceeds to step 217, and at step 217, the "reset the memory writing flag FMWRNOW"
Then, a routine that returns to step 201 is executed.

At time A, when the motor 5 starts rotating forward, the rotation sensor 6 generates pulse signals at substantially the same interval, and the pulse signal input block 8, the pulse interval measurement block 16, and the pulse interval measurement timer TM2 operate. 1
The cycle time of each successive pulse signal is detected.

At time B after time A, when window glass 30 reaches full open position G, window glass 3
0 is prevented from moving, and the rotation speed of the armature shaft 5c of the motor 5 decreases. When the rotation speed of the armature shaft 5c of the motor 5 decreases, the cycle time of the pulse signal generated by the rotation sensor 6 increases.

After time B, the pulse interval measuring timer TM2
If the detected cycle time exceeds the motor lock determination value XLOCK at time C, step 201, step 2
07, step 214, and step 215, the process proceeds to step 216. In step 216, since the "memory write completion flag FMWREND is not set", the process proceeds to step 218, and in step 218, the "memory erase flag FMERASE" is set.
Is reset, and the process proceeds to step 219.
19, the "motor ON write flag FMWR
Then, the process proceeds to step 220. In step 220, the "write flag FMW with motor off" is set.
"ROFF is reset", and the routine proceeds to step 221. In step 221, a routine for returning to step 201 is executed. While the memory writing is being performed, the process proceeds to step 201, step 207, and step 214,
Since it is determined in step 214 that the memory writing flag FMERNOW is not set, steps 215 and 216 are skipped and step 2
18, step 219, step 220, step 22
1 is executed.

By executing step 221,
The write routine is executed, and the determination in step 301 indicates that the “memory writing flag FMWRNOW has been reset”.
REND is reset "and the process proceeds to step 303. In step 303," the EEPROM write interval timer TM1 is cleared "and the process proceeds to step 304. In step 304, the" EEPROM memory address counter ADCT is cleared (initial setting of memory writing). And the process proceeds to step 305.
, "Sets the memory writing flag FMWRNOW" and proceeds to step 306.

Step 30 shifted from step 305
In the example of FIG. 6, "EEPROM writing interval timer T
It is determined whether or not M1 has exceeded a predetermined interval time. Therefore, when the first writing is started, the process proceeds to step 307 to execute “EEPROM”.
In the external memory block MEM, the memory is written to the address determined by the EEPROM memory address counter ADCT with the number of rotation signals (glass position data) given by the pulse counter glass position storage WINDCT ”, and the process proceeds to step 308. In step 308, "the EEPROM memory address counter ADCT is incremented" and the process proceeds to step 309. In step 309, "the EEPROM write interval timer TM1 is cleared" and the process proceeds to step 310. In step 310, "whether or not the EEPROM memory address counter ADCT has reached the maximum value N" is determined. Therefore, when the first writing is started, the flow returns to step 301 to execute the next routine. .

In the next routine, the determination in step 301 indicates that the “memory writing flag FMWRNO
W has been set. "
If the EEPROM write interval timer TM1 exceeds a predetermined interval time, step 30 is executed.
6, the process proceeds to step 311, and in step 311, the “memory writing flag FMWRNO
W is reset, and the process proceeds to the step 312. In the step 312, the "memory write completion flag FMWRE"
A write routine is executed to set "ND" and shift to the next time.

When the window glass 30 reaches the fully open position G, the rotation of the armature shaft 5c of the motor 5 is restricted, and at time D after time C, the open switch 2 is turned off, the control block 14 takes in. Since the descending command signal disappears, the first switching transistor TR1 of the motor drive output block 7 is turned off, the armature shaft 5c of the motor 5 stops rotating, and the window glass 30 stops at the fully open position G. Then, in the determination in step 201, since the "open switch 2 is not switched on", the process proceeds to step 202. In the determination in step 202, the "close switch 3 is not switched on", the process proceeds to step 203. In the determination in step 203, "one-touch open flag is not set", the process proceeds to step 204. In the determination in step 204, "one-touch close flag is not set", the process proceeds to step 205, and in step 205, Since the determination is "the writing flag FMWRON is set when the motor is on", the flow shifts to step 206. In step 206, the "memory writing flag FMWRNOW is reset" and the flow shifts to step 208. Writing Since the only medium flag FMWRNOW has been set, "the process proceeds to step 210, step 2
In step 10, the "memory erase flag FMERRASE is reset" and the process proceeds to step 211. In step 211, the "motor-on write flag FMWRON" is set and the process proceeds to step 212.
"Write flag FMWROF at motor off"
F is reset "and the process proceeds to step 213. In step 213," an overwrite command is issued from the control block 14 to the input / output control block 15 ".

By executing step 213,
The write routine is executed, and in step 301, the "memory writing flag FMWRNOW has been reset".
2, the "memory write completion flag FMWREND"
Is reset, and the process proceeds to step 303, where step 3
In step 03, "clear the EEPROM write interval timer TM1" and proceed to step 304. In step 304, "clear the EEPROM memory address counter ADCT (initial setting of memory writing)".
Then, the process proceeds to step 305. In step 305, "set the memory writing flag FMWRNOW", and then proceeds to step 306.

Step 30 shifted from step 305
In the example of FIG. 6, "EEPROM writing interval timer T
It is determined whether or not M1 has exceeded a predetermined interval time. Therefore, when the first writing is started, the process proceeds to step 307 to execute “EEPROM”.
In the external memory block MEM, the memory is written to the address determined by the EEPROM memory address counter ADCT with the number of rotation signals (glass position data) given by the pulse counter glass position storage WINDCT ”, and the process proceeds to step 308. In step 308, "the EEPROM memory address counter ADCT is incremented" and the process proceeds to step 309. In step 309, "the EEPROM write interval timer TM1 is cleared" and the process proceeds to step 310. In step 310, "whether or not the EEPROM memory address counter ADCT has reached the maximum value N" is determined. Therefore, when the first writing is started, the flow returns to step 301 to execute the next routine. .

In the next routine, the determination in step 301 indicates that the “memory writing flag FMWRNO
W has been set. "
If the EEPROM write interval timer TM1 exceeds a predetermined interval time, step 30 is executed.
6, the process proceeds to step 311, and in step 311, the “memory writing flag FMWRNO
W is reset, and the process proceeds to the step 312. In the step 312, the "memory write completion flag FMWRE"
A write routine is executed to set "ND" and shift to the next time.

When the first routine is completed while the overwriting memory writing is being performed, the process proceeds to step 201, step 202, step 203, step 204, step 205, step 206, and step 208 from the next time. Then, the process skips to step 210 in the determination in step 208, and steps 210, 211, 212, and 213 are executed.

On the other hand, when the power switch 20 is turned on and the window glass 30 is in the fully closed position F,
When the open switch 2 is turned on and the ON time of the open switch 2 is longer than a predetermined time, a routine in which the one-touch open flag is set by another program is executed.

When the open switch 2 is initially turned on, the process proceeds to step 207 in the determination in step 201, proceeds to step 222 in the determination in step 207, and proceeds to step 222 in the determination in step 222. Not set ", the process proceeds to Step 223, and Steps 223 and 22 are executed.
4, Step 225, Step 226, Step 22
7. Step 228 is executed. The base command is applied to the first switching transistor TR1 of the motor drive output block 7 by the falling command signal being taken into the control block 14, so that the armature shaft 5c of the motor 5 starts forward rotation and the window glass 30 opens. Is driven.

Thereafter, even if the open switch 2 is turned off, since the "one-touch open flag is set", the determination in step 201 indicates that "the open switch 2 has not been turned on". Then, the process proceeds to step 203 in the determination at step 202, and proceeds to step 207 because the "one-touch open flag is set" in the determination at step 203. Thereafter, steps 222, 223, 224, and 225 are performed. , 226, 227, and 228, and the control block 14 continues to supply the base current to the first switching transistor TR1 of the motor drive output block 7.
The armature shaft 5c of the motor 5 continues to rotate forward, and the window glass 30 is continuously driven to the open side.

At time A, when the motor 5 starts rotating forward, the rotation sensor 6 generates pulse signals of substantially the same interval, and the pulse signal input block 8, the pulse interval measurement block 16, and the pulse interval measurement timer TM2 operate. 1
The cycle time of each successive pulse signal is detected.

At time B after time A, when window glass 30 reaches full-open position G, window glass 3
0 is prevented from moving, and the rotation speed of the armature shaft 5c of the motor 5 decreases. When the rotation speed of the armature shaft 5c of the motor 5 decreases, the cycle time of the pulse signal generated by the rotation sensor 6 increases.

After time B, the pulse interval measuring timer TM2
If the detected cycle time exceeds the motor lock determination value XLOCK at time C, step 201, step 2
07, step 214, and step 215, the process proceeds to step 216. In step 216, since the "memory write completion flag FMWREND is not set", the process proceeds to step 218, and in step 218, the "memory erase flag FMERASE" is set.
Is reset, and the process proceeds to step 219.
19, the "motor ON write flag FMWR
ON is set ", and the process proceeds to step 220. In step 220, the" motor off write flag FMW "is set.
"ROFF is reset", and the routine proceeds to step 221. In step 221, a routine for returning to step 201 is executed. While the memory writing is being performed, the process proceeds to step 201, step 207, and step 214,
Since it is determined in step 214 that the memory writing flag FMERNOW is not set, steps 215 and 216 are skipped and step 2
18, step 219, step 220, step 22
1 is executed.

By executing step 221,
The write routine is executed, and the determination in step 301 indicates that the “memory writing flag FMWRNOW has been reset”.
REND is reset "and the process proceeds to step 303. In step 303," the EEPROM write interval timer TM1 is cleared "and the process proceeds to step 304. In step 304, the" EEPROM memory address counter ADCT is cleared (initial setting of memory writing). And the process proceeds to step 305.
, "Sets the memory writing flag FMWRNOW" and proceeds to step 306.

Step 30 shifted from step 305
In the example of FIG. 6, "EEPROM writing interval timer T
It is determined whether or not M1 has exceeded a predetermined interval time. Therefore, when the first writing is started, the process proceeds to step 307 to execute “EEPROM”.
In the external memory block MEM, the memory is written to the address determined by the EEPROM memory address counter ADCT with the number of rotation signals (glass position data) given by the pulse counter glass position storage WINDCT ”, and the process proceeds to step 308. In step 308, "the EEPROM memory address counter ADCT is incremented" and the process proceeds to step 309. In step 309, "the EEPROM write interval timer TM1 is cleared" and the process proceeds to step 310. In step 310, "whether or not the EEPROM memory address counter ADCT has reached the maximum value N" is determined. Therefore, when the first writing is started, the flow returns to step 301 to execute the next routine. .

In the next routine, the determination in step 301 indicates that the “memory writing flag FMWRNO
W has been set. "
If the EEPROM write interval timer TM1 exceeds a predetermined interval time, step 30 is executed.
6, the process proceeds to step 311, and in step 311, the “memory writing flag FMWRNO
W is reset, and the process proceeds to the step 312. In the step 312, the "memory write completion flag FMWRE"
A write routine is executed to set "ND" and shift to the next time.

When the window glass 30 reaches the fully open position G and the rotation of the armature shaft 5c of the motor 5 is restricted, the descent command signal taken into the control block 14 at time D after time C disappears. To do
The first switching transistor TR1 of the motor drive output block 7 is turned off, the armature shaft 5c of the motor 5 stops rotating, and the window glass 30 stops at the fully open position G. Then, in the determination in step 201, since the "open switch 2 is not switched on", the process proceeds to step 202. In the determination in step 202, the "close switch 3 is not switched on", the process proceeds to step 203. In the determination in step 203, "one-touch open flag is not set", the process proceeds to step 204. In the determination in step 204, "one-touch close flag is not set", the process proceeds to step 205, and in step 205, In the determination, "the motor ON write flag FMWRON is set", the flow proceeds to step 206, and step 2 is executed.
06, the “memory writing flag FMWRNOW
Is reset, and the process proceeds to step 208, where step 2
08, the "memory writing flag FMW
Since RNOW is set, the process proceeds to step 210, and in step 210, the "memory erase flag FM
Reset ERASE ”and proceed to step 211,
In step 211, "set the write flag FMWRON when the motor is on" and proceed to step 212. In step 212, "reset the write flag FMWROFF when the motor is off" and execute step 213.
The processing proceeds to step 213, where "control block 14
From the input / output control block 15.

By executing step 213,
The write routine is executed, and in step 301, the "memory writing flag FMWRNOW has been reset".
2, the "memory write completion flag FMWREND"
Is reset, and the process proceeds to step 303, where step 3
In step 03, "clear the EEPROM write interval timer TM1" and proceed to step 304. In step 304, "clear the EEPROM memory address counter ADCT (initial setting of memory writing)".
Then, the process proceeds to step 305. In step 305, "set the memory writing flag FMWRNOW", and then proceeds to step 306.

Step 30 shifted from step 305
In the example of FIG. 6, "EEPROM writing interval timer T
It is determined whether or not M1 has exceeded a predetermined interval time. Therefore, when the first writing is started, the process proceeds to step 307 to execute “EEPROM”.
In the external memory block MEM, the memory is written to the address determined by the EEPROM memory address counter ADCT with the number of rotation signals (glass position data) given by the pulse counter glass position storage WINDCT ”, and the process proceeds to step 308. In step 308, "the EEPROM memory address counter ADCT is incremented", and the flow shifts to step 309. In step 309, the "write interval timer TM1"
Is cleared ", and the routine proceeds to step 310. Step 3
10, the "EEPROM memory address counter ADC"
Whether or not T has reached the maximum value N "is determined.
When the first writing is started, the process returns to step 301 to execute the next routine.

In the next routine, the determination in step 301 indicates that the "memory writing flag FMWRNO
W has been set. "
If the EEPROM write interval timer TM1 exceeds a predetermined interval time, step 30 is executed.
6, the process proceeds to step 311, and in step 311, the “memory writing flag FMWRNO
W is reset, and the process proceeds to the step 312. In the step 312, the "memory write completion flag FMWRE"
A write routine is executed to set "ND" and shift to the next time.

When the first routine is completed while the overwriting memory is being written, the process proceeds to steps 201, 202, 203, 204, 205, 206 and 208 from the next time. Then, the process skips to step 210 in the determination in step 208, and steps 210, 211, 212, and 213 are executed.

On the other hand, when the power switch 20 is turned on and the window glass 30 is at the full open position G,
When the close switch 3 is turned on, the routine is executed in the same manner as the routine when the open switch 2 is turned on. When the power switch 20 is turned on and the window glass 30 is at the fully open position G, the close switch 3 is turned on, and the on time of the close switch 3 is longer than a predetermined time. At this time, the control routine is executed in the same manner as in the case where the one-touch open flag is set.

As described above, when the open switch 2 is turned on or the close switch 3 is turned on, the motor control device 1 erases the position data written in the EEPROM external memory block MEM. And
When the armature shaft 5c of the motor 5 is locked, the rotation signal given by the rotation sensor 6 is converted into position data and the data is stored in the EEPROM external memory block M.
EM, and thereafter, when the open switch 2 is turned off or the close switch 3 is turned off, the rotation signal given from the rotation sensor 6 is converted into position data to convert it into the EEPROM external memory block MEM. The first and second brush terminals 5 of the motor 5
When the terminal voltages a and 5b are not cut off, writing of a plurality of position data is performed.

[0103]

As described above, according to the motor control device according to the first aspect of the present invention, when the motor is locked, the rotation signal given by the motor rotation detecting means is transmitted to the position data. Therefore, when the motor voltage is not cut off, a plurality of position data are written. Therefore, the position data is not written during the fall of the power supply voltage after the power switch is turned off, so that the position data can be written more reliably than when writing is performed after the power switch is turned off. Can be
Since there is no need for a large-capacity backup capacitor for securing time for writing position data, an excellent effect that a compact external shape can be obtained is obtained.

According to the motor control device of the second aspect of the present invention, the control block of the controller erases the position data written in the nonvolatile memory every time the open switch or the close switch is turned on. . Therefore, in addition to the effect of the first aspect, there is an excellent effect that the latest position data is always used for each operation of the open switch and the close switch when writing to the nonvolatile memory.

According to the motor control device of the third aspect of the present invention, the control block of the controller overwrites the position data in the nonvolatile memory every time the open switch or the close switch is turned off. Therefore, in addition to the effects of claims 1 and 2, the locked state is obtained by the position data written when the motor is in the locked state and the position data overwritten when the open switch and the close switch are turned off. Thus, even when the motor is slightly rotated, the position data at the position where the window glass has reached the stroke end is written.

According to the motor control device of the fourth aspect of the present invention, the period of the rotation signal given from the motor rotation detecting means is increased by locking the motor, and the pulse interval measuring block of the controller is used for the motor. The period of the rotation signal provided by the rotation detecting means is measured. Therefore, in addition to the effect of the first aspect, there is an excellent effect that the load state of the motor is detected by detecting the period of the rotation signal by the pulse interval measurement block.

According to the motor control device of the fifth aspect of the present invention, the motor lock determination block of the controller compares the period value given from the pulse interval measurement block with a predetermined determination value, and determines the pulse interval. When the cycle value given by the measurement block exceeds a predetermined determination value, writing to the nonvolatile memory is executed by the control block. Therefore, in addition to the effect of claim 4, there is an excellent effect that the position data of the glass is not lost even if the power switch is turned off while the motor is locked.

According to the motor control device of the sixth aspect of the present invention, the one-touch operation storage block of the controller stores the open switch or the close switch when the open switch or the close switch is turned off after being turned on for a long time. Is continuously supplied to the control block when the switch is turned on. Therefore, in addition to the effect of claim 1, since the command signal generated from the open switch or the close switch is held by the one-touch operation storage block, an additional switch such as an auto switch is required in addition to the open switch and the close switch. It has an excellent effect of not doing so.

[Brief description of the drawings]

FIG. 1 is a block diagram of an embodiment of a motor control device according to the present invention.

FIG. 2 is a specific circuit diagram of the motor control device shown in FIG.

FIG. 3 is a timing chart in the motor control device shown in FIG. 1;

FIG. 4 is a flowchart illustrating a control operation in the motor control device illustrated in FIG. 1;

FIG. 5 is a flowchart illustrating a control operation in the motor control device illustrated in FIG. 1;

FIG. 6 is a flowchart illustrating a control operation in the motor control device illustrated in FIG. 1;

FIG. 7 is a timing chart in a conventional motor control device.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 motor control device 2 open switch 3 close switch 5 motor 6 (motor rotation detecting means) rotation sensor 7 (motor drive circuit) motor drive output block 12 one-touch operation storage block 14 control block 16 pulse interval measurement block 17 motor lock determination block 20 Power switch 21 Power supply 30 (Load) Window glass MCU Controller MEM (Non-volatile memory) EEPROM external memory block VB Motor voltage

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2E052 AA09 CA06 EA11 EB01 GA08 GA10 GB12 GB13 GC01 GC05 3D127 AA17 BB01 CB05 CC05 DF03 DF36 FF09 FF19 5H571 AA03 BB03 BB07 BB10 CC04 DD01 EE02 FF09 HA04 JJ03 JJ03 JJ03 LL50

Claims (6)

[Claims] A power switch, a motor drive circuit electrically connected to the power switch, and a motor drive circuit electrically connected to the motor drive circuit and coupled to an on / off load. A motor for driving a load to an open side or a closed side; motor rotation detecting means for generating a rotation detection signal by rotation of the motor; an open switch for generating a descending command signal when switched on; A close switch that generates an ascending command signal, and is electrically connected to the power switch, the motor drive circuit, the motor rotation detecting means, the open switch, and the close switch. Current for driving the motor to the open side is supplied to the motor via the motor drive circuit, and a rising command signal is given from the close switch. And a controller for supplying a current for driving the load to the closing side to the motor through the motor drive circuit, and when the motor is in a locked state, a rotation signal given by the motor rotation detection means is transmitted to the position. A motor control device, comprising: a nonvolatile memory capable of converting data into data and electrically writing a plurality of nonvolatile memories. 2. The controller according to claim 1, wherein the controller is provided with a control block for erasing the position data written in the nonvolatile memory each time the open switch or the close switch is turned on. The motor control device according to any one of the preceding claims. 3. The controller according to claim 1, wherein the controller is provided with a control block for overwriting the position data in the nonvolatile memory each time the open switch or the close switch is turned off. The motor control device according to any one of the preceding claims. 4. The motor control device according to claim 1, wherein the controller includes a pulse interval measurement block for measuring a period of the rotation signal provided by the motor rotation detection means. 5. A controller is provided with a motor lock determination block for performing a motor lock determination by comparing a cycle value of a rotation signal given from a pulse interval measurement block with a predetermined determination value. The motor control device according to claim 4, wherein: 6. A controller stores a descending command signal or a rising command signal when a time during which an open switch or a close switch is turned on exceeds a predetermined value. 2. The motor control device according to claim 1, further comprising a one-touch operation storage block that continuously supplies a descending command signal or an ascending command signal to the control block even after the switch is turned off.