JPH09217550A - Driving control device for vehicular motor-driven object - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform control conformed to the intention of a user by detecting the electric potential of terminals caused by induced electromotive force generated by the driven rotation of a DC motor at the time of manual opening/closing action, and by controlling the driving of the motor on the basis of the detected result. SOLUTION: When a sliding door, a vehicular motor-driven object, is manually opened/closed, a DC motor M for driving the sliding door to open/close is put in driven rotation. Induced electromotive force is thereby generated, and the electric potential of terminals T1, T2 caused by this induced electromotive force is detected by a detecting circuit 2. On the basis of the detected result, a control microcomputer 1 controls the driving of the DC motor M. As a result, when the sliding door is manually moved at the lower limit speed or more in a specified motor-driven speed range, manual operation is switched to motor-driven operation. When the sliding door is moved exceeding the upper limit speed in the speed range, switching to manual operation is performed. Control conformed to the intention of a user is thus performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive control device for an electric object for a vehicle, which moves an electric object for a vehicle such as an automobile door by a driving force of an electric motor.

[0002]

2. Description of the Related Art Conventionally, as this kind of drive control device,
For example, the one described in JP-A-6-344773 is known.

Such a device detects when the sliding door of an automobile starts to be opened and closed manually, and at that time, an electric motor for driving the sliding door is driven to automatically open and close the sliding door. Has become. Further, in order to detect that the sliding door has begun to be opened and closed manually, a rotation sensor having a mechanical structure interlocking with the sliding door is used.

[0004]

However, in the above-mentioned conventional apparatus, the above-mentioned conventional apparatus has a degree of manual operation of the slide door, that is, a normal opening / closing operation (hereinafter referred to as "normal operation") or a rapid opening / closing operation (hereinafter referred to as "quick operation"). Therefore, it is not possible to perform fine control according to the degree of manual operation of the slide door, because the open / close operation of the slide door is detected and dealt with under a predetermined condition without making a decision.

For example, when the slide door starts to be suddenly operated at a speed higher than the automatic opening / closing speed due to the driving force of the electric motor, the electric motor is driven as in the normal operation, and the slide door is suddenly operated. There was a risk that it would go against the intention of the person. In addition, when a sliding door that is being automatically opened / closed by the driving force of the electric motor is further subjected to a sudden operation to increase the opening / closing speed, the electric motor is continuously driven without considering the situation. ,
There is also a possibility that it may be against the intention of the user who operates the slide door suddenly.

Furthermore, the above-mentioned conventional device requires a rotation sensor having a mechanical structure to detect the opening / closing of the slide door, which causes an increase in the size of the entire device and makes it difficult to secure a space for arrangement. There was also a problem.

An object of the present invention is to recognize the degree of manual operation of an electric object for a vehicle such as a sliding door of an automobile and to carry out fine control according to the intention of the user. Another object of the present invention is to provide a drive control device for an electrically driven object for a vehicle, which can be downsized.

[0008]

A drive control device for an electrically driven object for a vehicle according to the present invention is a drive control device for an electrically driven object for a vehicle, which is capable of driving an electrically operated object that can be moved and operated by a driving force of an electric motor. A detection means for detecting the moving speed of the electrically driven object, and a control means for driving the electrically driven object by the driving force of the electric motor when the moving speed detected by the detecting means is within a predetermined range. It is characterized by having.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) This embodiment is an application example as a control device for driving and controlling a slide door for an automobile as an electrically driven object for a vehicle.

FIG. 1 is a circuit configuration diagram of a control device of this embodiment. In FIG. 1, M is a DC motor (electric motor) provided in an unillustrated slide door opening / closing mechanism,
Drive control is performed by a control microcomputer (hereinafter referred to as “control microcomputer”) 1 as a control unit of the control device. In the case of this example, when the control microcomputer 1 drives the DC motor M in the normal direction as described later, the opening / closing mechanism opens the slide door by the driving force,
Further, when the DC motor M is reversely driven as described later, the opening / closing mechanism closes the slide door by its driving force. Further, when the slide door is manually opened, the DC motor M is forcibly rotated in the forward direction, and the induced electromotive force in the direction in which the terminal T1 side is at a high potential is applied to the terminals T1 and T2 at the opening speed of the slide door. When the slide door is manually closed, the DC motor M is forcibly rotated in the reverse direction and its terminals T1, T
In Fig. 2, an induced electromotive force in the direction in which the terminal T2 side has a high potential appears according to the closing speed of the slide door.

Further, the sliding door is driven by the direct rotation of the DC motor M to a predetermined opening speed (hereinafter referred to as "electric opening speed").
When a forced operation force for forcibly opening the slide door faster is applied when the slide door is opened, the opening speed of the slide door is forcibly increased and the DC motor M is increased. Causes further induced electromotive force in the direction opposite to the drive voltage (battery voltage), and as a result, the potential of the terminal T1 on the high potential side becomes higher. Similarly, when the slide door is closed at a predetermined closing speed (hereinafter referred to as “electric closing speed”) by the reverse rotation of the DC motor M, the forced operation for forcibly closing the slide door faster. When a force is applied, the closing speed of the slide door is forcibly increased, so that an induced electromotive force in the direction opposite to the drive voltage (battery voltage) is further generated in the DC motor M, resulting in In addition, the potential of the terminal T2 on the high potential side becomes higher.

The terminals T1 and T2 of the DC motor M are connected to an on-vehicle battery via a door open relay 11, a door close relay 12, and a motor brake relay 13, and these relays 11, 12, and 13 are for control. It is controlled by the microcomputer 1. Relays 11, 12, 1
In the state of FIG. 1 in which both 3 are off, only the door open relay 11 is turned on to drive the direct current motor M in the forward direction to open the slide door, and both the door close relay 12 and the motor brake relay 13 are turned on. Then, the direct current motor M is reversely driven to close the slide door, and only the motor brake relay 13 is turned on, so that both terminals T1 and T of the direct current motor M are turned on.
2 is short-circuited and the DC motor M is braked.

In FIG. 1, terminals 2 and 3 are terminals T, respectively.
The former detection circuit 2 is connected between the terminal T1 and the input terminal P1 of the control microcomputer 1. The latter detection circuit 3 has a configuration in which a sudden operation detection circuit 4 is added to the same circuit as the detection circuit 2, and the terminal T2
And the input terminals P2 and P3 of the control microcomputer 1 are connected.

First, the detection circuit 2 will be described.

The voltage of the terminal T1 due to the induced electromotive force is suppressed to a maximum of 18V by the Zener diode ZD, and is also divided to a maximum of 9V by the voltage dividing resistors R1 and R2, and is input to the non-inverting input terminal of the operational amplifier OP1. It
The operational amplifier OP1 constitutes a non-inverting amplifier circuit by the resistors R3 and R4. The output of the operational amplifier OP1 is input to the non-inverting input terminal of the comparator CMP1 via the protection resistor R5. At the inverting input terminal of the comparator CMP1, the microcomputer power supply voltage 5V is applied to the voltage dividing resistors R6 and R7.
The reference voltage of 1.47 V divided by is input.
Therefore, the output of the operational amplifier OP1 is the comparator C
When the reference voltage of MP1 is exceeded, the comparator C
The output of MP1 is inverted from "L" to "H" level, the transistor Tr1 is turned off, and the input terminal P1 of the control microcomputer 1 goes from "H" to "L" level. R8
Is a resistor for giving a hysteresis of 0.21V.

Therefore, in the detection circuit 2 connected to the terminal T1, the sliding door is manually opened and closed,
When the electric motor M is forced to rotate normally or reversely,
The voltage of the terminal T1 due to the induced electromotive force is amplified by the operational amplifier OP1 and compared with the reference voltage by the comparator CMP1. When the sliding door is manually opened and the terminal T1 has a higher potential than the terminal T2, the output of the operational amplifier OP1 exceeds the reference voltage of the comparator CMP1, the transistor Tr1 is turned off, and the control microcomputer 1 is turned off. The input terminal P1 becomes "L" level. Conversely, the sliding door is manually closed,
When the terminal T2 has a higher potential than the terminal T1, the output of the operational amplifier OP1 of the detection circuit 2 is the comparator C.
Does not exceed the reference voltage of MP1 and transistor Tr1 is OF
Instead of becoming F, the input terminal P1 of the control microcomputer 1 remains at "H" level. Therefore, the input terminal P1 of the control microcomputer 1 changes from "H" level to "L" level when the slide door is manually opened.
When the sliding door is manually closed, it remains at "H" level.

On the other hand, in the detection circuit 3 connected to the terminal T2, the same components as those of the detection circuit 2 are designated by the same reference numerals and the description thereof will be omitted. The same components as the detection circuit 2 are
It functions similarly to the detection circuit 2, and as a result, the input terminal P2 of the control microcomputer 1 changes from "H" level to "L" level when the slide door is manually closed, and the slide door is manually operated. When it is opened, it remains at "H" level. It should be noted that the comparator CMP1 in the detection circuit 3 is taken into consideration in consideration of the usage form of the slide door.
The reference voltage of is the comparator CMP in the detection circuit 2.
It may be set to a value different from the reference voltage of 1.

The sudden operation detection circuit 4 in the detection circuit 3 has a comparator CMP2 and a transistor Tr2, and the non-inverting input terminal of the comparator CMP2 is
The output of the operational amplifier OP1 is input via the protection resistor R5. The reference voltage obtained by dividing the microcomputer power supply voltage 5V by the voltage dividing resistors R11 and R12 is input to the inverting input terminal of the comparator CMP2. This reference voltage is higher than the reference voltage in the comparator CMP1, and the DC motor M when the stopped sliding door is manually closed faster than the electric closing speed, that is, when the sliding door is rapidly closed. Is set to be slightly lower than the voltage generated by the induced electromotive force. When the output of the operational amplifier OP1 exceeds the reference voltage of the comparator CMP2, the output of the comparator CMP2 is "L".
To "H" level, and the transistor Tr2 becomes O
It becomes FF, and the input terminal P3 of the control microcomputer 1 is "H".
To "L" level. R13 is a resistor for giving a predetermined hysteresis.

Therefore, the sudden operation detection circuit 4 is provided with an input terminal of the control microcomputer 1 when the stopped sliding door is closed more rapidly than the electric closing speed (hereinafter referred to as "quick closing operation"). P3 is changed from "H" level to "L" level. Further, the input terminal P3 is used when the sliding door is opened and when the sliding door is operated by the comparator CMP.
When the closing operation (hereinafter referred to as "normal closing operation") is performed at a speed equal to or lower than the reference voltage of 2, the "H" level remains.

The control microcomputer 1 uses the relays 11 and 11 based on the input levels of the input terminals P1, P2 and P3.
Control 12 and 13. The control function will be described later together with the operation. For example, when the voltage at the terminal T2 changes as shown in FIG. 2A due to the induced electromotive force of the DC motor M, the input terminals P2 and P3 are correspondingly changed to those shown in FIGS.
It changes like In FIG. 2A, H1 is a threshold value corresponding to the reference voltage of the comparator CMP1 of the detection circuit 3, and H2 is a threshold value corresponding to the reference voltage of the comparator CMP2.

Next, the operation will be described.

The control microcomputer 1 executes the main routine shown in FIG. 3, that both the door open relay 11 and the door close relay 12 are not ON, and that the input terminal P3 is not at the "L" level, that is, the slide door. Under the condition that the quick closing operation has not been performed (step S
1, S2, S3), the electric setting operation subroutine of FIG. 4 is executed (step S4), and then the relay control subroutine of FIG. 5 is executed (step S5).

In the electric setting operation of FIG. 4, first, it is determined whether or not any one of the input terminals P1 and P2 is at the "L" level, that is, whether or not the slide door is manually opened or closed. Is determined (step S1
1, 12).

In step S11, the input terminal P1 is "L".
When it is determined that the level is the level, that is, when the slide door is manually opened, the "L" level duration of the input terminal P1 is counted as the manual open time, and the manual open time is equal to or longer than a predetermined time. It is determined whether (in this example, 300 msec or more) has elapsed (step S13). Manual open time is 300 ms
When it is less than ec, the manual open time is incremented (step S14). On the other hand, when the manual open time is 300 msec or more, it is confirmed again that the input terminal P1 is at the “L” level (step S1).
5), the electric open flag is set (step S1)
6). When it is not confirmed in step S15 that the “L” level of the input terminal P1 is continued, the manually open time measured until then is cleared in step S17.
In this way, the electric open flag is set when the input terminal P1 continuously attains the “L” level for 300 msec or longer. Setting the electric open flag on condition that the manual open time is 300 msec or more may cause a malfunction when the input terminal P1 momentarily becomes the “L” level due to vibration of the slide door or the like. This is to avoid it.

On the other hand, when it is determined in step S12 that the input terminal P2 is at the "L" level, that is, when the slide door is normally closed, the input terminal P2 is set.
The duration of the “L” level is measured as the manual closing time, and it is determined whether the manual closing time has passed a predetermined time or more (300 msec or more in this example) (step S18). Manual closing time is 300ms
When it is less than ec, the manual closing time is incremented (step S19). On the other hand, when the manual closing time is 300 msec or more, it is confirmed again that the input terminal P2 is at the “L” level (step S2
0), the electric close flag is set (step S2).
1). If it cannot be confirmed in step S20 that the “L” level of the input terminal P2 has been continued, the manually closed time measured until then is cleared in step S22.
In this way, the electric close flag is set when the input terminal P2 continuously attains the “L” level for 300 msec or longer. Setting the electric close flag on condition that the manual close time is 300 msec or more may cause a malfunction when the input terminal P2 momentarily becomes the “L” level due to vibration of the slide door or the like. This is to avoid it.

By the way, if it is determined in steps S11 and S12 that neither of the input terminals P1 and P2 is at the "L" level, and if the manual open time is not "0", the manual open time measured until then is set. Is cleared (steps S23 and S24), and when the manual close time is not "0", the manual close time measured up to that point is cleared (steps S25 and S26).

In the relay control of FIG. 5, first, both the door open relay 11 and the door close relay 12 are turned on.
On condition that it is not N (step S31,
S32), it is determined whether the electric open flag or the electric close flag is set (step S3).
3, S34).

If it is determined in step S33 that the electric open flag is set, the door open relay flag is set (step S35), and then the electric open flag is reset (step S36).
On the other hand, when it is determined in step S34 that the electric close flag is set, the door close relay flag is set (step S37), and then the electric close flag is reset (step S38).

When the door open relay flag is set, the door open relay 11 is turned on (steps S39 and S40), the DC motor M is driven in the normal direction, and the sliding door is opened by the driving force thereof. On the other hand, when the door close relay flag is set, the door close relay 12 and the motor brake relay 13 are turned on (steps S41, S42, S43), the DC motor M is driven in reverse, and the sliding door is closed by the driving force. To move.

Here, the door open relay flag is reset when the slide door is fully opened, and the door close relay flag is reset when the slide door is fully closed. There is.

After the door open relay 11 is turned on, the sliding door is continuously opened until the door open relay flag is reset (steps S31 and S4).
4) Then, when the door open relay flag is reset, that is, when the slide door is fully opened, the door open relay 11 is turned off to stop the DC motor M (step S45). Similarly, after the door close relay 12 is turned on, the sliding door continues to be closed until the door close relay flag is reset (steps S32 and S46), and when the door close relay flag is reset, In other words, the door close relay 1
2 and the motor brake relay 13 are turned off to stop the DC motor M (steps S47 and S48).

By the way, when the slide door is suddenly closed, the input terminal P3 becomes the "L" level as described above. Therefore, the electric setting operation subroutine of FIG. 4 is executed from step S3 of FIG. Without doing so, the process proceeds to the relay control subroutine of FIG. That is,
Without performing the electric setting operation of FIG. 4 that sets the electric open flag and the electric close flag, the relay control of FIG. 5 that controls the open relay 11 and the close relay 12 according to the setting status of those flags is executed. It will be. Therefore, the relays 11 and 12 are not turned on, and the DC motor M is not driven.

After all, when the slide door is suddenly closed, the slide door is manually closed.
This is in line with the user's intention to perform the rapid closing operation of the slide door faster than the electric closing speed.

FIG. 2 is a time chart of the operation when a normal manual closing operation and a quick closing operation for the stopped sliding door are detected.

First, the manual closing time t shown in FIG.
When the duration of the “H” level of the input terminal P2 is less than 300 msec as in 1, t2, the close relay 1
2 does not turn on, and the DC motor M is not driven in reverse as shown in FIG. Then, at time T1 when the "H" level of the input terminal P2 continues for 300 msec or more, the close relay 12 is turned on, and the direct-current motor M is reversely driven. On the other hand, at the time point T2 when the sliding door that is stopped is suddenly closed, the input terminal P3 becomes the “L” level, and the DC motor M is not driven in reverse.

(Second Embodiment) FIGS. 6 to 8 are views for explaining a second embodiment of the present invention. In the present embodiment, as in the first embodiment described above, the start of the sudden closing operation of the slide door in the stopped state is recognized and dealt with, and the sudden closing operation is further performed on the sliding door being closed by the DC motor M. This is also to recognize that the addition has been made and deal with it. Instead of the main routine of FIG. 3 described above, the main routine of FIG. 7 is executed, and in step S56 in the main routine, the manual setting operation of FIG. Execute a subroutine. Further, the reference voltage of the comparator CMP2 in the sudden operation detection circuit 4 is set to a value corresponding to the threshold value H3 in FIG.

By the way, the direct closing operation is further applied to the sliding door closed by the DC motor M, so that the sliding door is closed faster than the electric closing speed (hereinafter referred to as "quick closing operation during closing drive"). When it is done, as mentioned above,
The reverse rotation speed of the DC motor M is forcibly increased and the potential of the terminal T2 is increased by the counter electromotive force. The threshold value H3 in FIG. 6A is a value for detecting an increase in the potential of the terminal T2 due to such a rapid closing operation during the closing drive, and the threshold value H3 indicates the potential of the terminal T2. The rising time point T3 is the detection time point of the quick closing operation during the closing drive, and at that time point T3, as shown in FIG.
3 becomes the “L” level.

In the main routine of FIG. 7, the input terminal P3 is not at the "L" level, that is, the slide door is not suddenly closed during the closing drive, and both the open relay 11 and the close relay 12 are turned on. As a condition (steps S51, S52),
After the above-described subroutine of the electric setting operation of FIG. 4 is executed (step S53), the above-mentioned relay control subroutine of FIG. 5 is executed (step S54).

If the close relay 12 is not ON when the input terminal P3 becomes the "L" level, that is, if the slide door is not driven to be closed by the DC motor M, the steps S51, S55 to S54 are performed.
Then, the process proceeds to the relay control subroutine of FIG. 5 without executing the electric setting operation subroutine of FIG. Therefore, in this case, the sliding door is manually closed by performing the same function as in the above-described first embodiment when the sliding door being stopped is suddenly closed. Therefore, in this case, the threshold value H3 in FIG. 6A is used as the threshold value H2 in FIG. 2A.

On the other hand, when the input terminal P3 becomes the "L" level and the close relay 12 is ON, that is, when the slide door is driven to be closed by the DC motor M, steps S51, S55 to S56. 8, the door close relay flag is cleared in the manual setting operation subroutine of FIG. 8 (step S61), and then the relay control subroutine of FIG. 5 is executed in step S54. In such a case, a sudden closing operation during the closing drive is detected, and the door close relay flag is cleared in step S61, so that in the subroutine of the relay control in FIG.
S46, S47 and S48 are executed, the door close relay is turned off, and the reverse rotation drive of the DC motor M is stopped. Therefore, the slide door, which was being closed by the DC motor M, is manually closed at a speed exceeding the electric closing speed by the sudden closing operation. This corresponds to the intention of the user who further performs the quick closing operation on the sliding door that is being closed by the DC motor M. For example, in a cold region, when the slide door is being closed by the DC motor M at a predetermined electric closing speed, the slide door is rapidly closed at a speed exceeding the electric closing speed, and cold air outside the vehicle enters the inside of the vehicle. Can be minimized.

(Other Embodiments) As the abrupt operation detection circuit 4, it is possible to use a circuit in which the threshold value H2 in FIG. 2A and the threshold value H3 in FIG. 6A are individually set. Is.

Further, in the first and second embodiments described above, a configuration is provided in which the sudden closing operation when the slide door is stopped and the sudden closing operation when the slide door is closed by the DC motor M are recognized and dealt with. Alternatively or in combination, a rapid opening operation (hereinafter, referred to as “quick opening operation”) while the slide door is stopped and a rapid opening operation during the opening operation of the slide door by the DC motor M are recognized and the same action is taken. It is also possible. In this case, the sudden operation detection circuit 4 can be added to the detection circuit 2 side, and the output thereof can be similarly controlled based on the signal.

Further, as a method for judging the normal operation and the abrupt operation of the slide door manually, other than the method based on the induced electromotive force of the DC motor M as in the first and second embodiments described above, Various methods can be adopted. For example, the determination is made based on the opening / closing speed and the opening / closing acceleration of the slide door detected by the speed sensor and the acceleration sensor, and regarding the sudden operation during the opening / closing drive, the load of the DC motor M is used. It is also possible to make a determination based on the variation of In short, the opening / closing speed at which the sliding door can be determined to be a normal manual operation (hereinafter referred to as the "first determination reference speed")
It is only necessary to be able to drive the DC motor M within the range of the opening / closing speed below the opening / closing speed (hereinafter, referred to as “second determination reference speed”) that can be determined to be a rapid manual operation. In other words, when the sliding door becomes the first judgment reference speed or more, it is switched from manual to electric,
Further, it is sufficient that the electric power can be switched to the manual when the sliding door exceeds the second determination reference speed.

Further, when the slide door is manually opened, either the control for electrically opening the slide door or the control for electrically closing the slide door is manually performed. You may. Further, for example, when the vehicle is stopped on the inclined surface, provided that the inclination of the vehicle is detected,
When the sliding door unexpectedly closes in the tilt direction of the car, by opening it electrically,
When the sliding door is kept open, or conversely, when the sliding door opens unintentionally in the tilt direction of the car,
It is also possible to maintain the closed state by electrically closing it.

Further, the present invention can be widely applied as a drive control device for various vehicle electric objects such as window glass, hinge type side doors, sunroof lids, roof carriers, door mirrors, etc., in addition to sliding doors for automobiles. You can

[0047]

As described above, the drive control device for an electrically driven object for a vehicle according to the present invention can be used when the moving speed of an electrically driven object for a vehicle such as a sliding door of an automobile is within a predetermined electrically operated speed range. , In order to drive the electric motor for driving the electric object, when the electric object is manually operated at a speed lower than the lower limit speed of the predetermined electric speed range, the electric object is switched to electric, and the movement speed of the predetermined range is changed. When the electric target object is moved beyond the upper limit speed, it can be switched to the manual mode and the control according to the user's intention can be implemented.

Further, by using the induced electromotive force of the electric motor to detect the moving speed of the electrically driven object, it is not necessary to provide a special sensor having a mechanical structure for the detection. It is possible to reduce the size of the entire device.

[Brief description of drawings]

FIG. 1 is a circuit configuration diagram of a main part of a first embodiment of the present invention.

FIG. 2 is a time chart for explaining the operation of the control device of FIG.

FIG. 3 is a flowchart for explaining a control operation of the control microcomputer shown in FIG.

FIG. 4 is a flowchart for explaining a sub-routine for the electric set operation shown in FIG.

5 is a flow chart for explaining a relay control subroutine shown in FIG.

FIG. 6 is a time chart for explaining the operation of the second exemplary embodiment of the present invention.

FIG. 7 is a flowchart illustrating a control operation of a control microcomputer according to the second embodiment of the present invention.

FIG. 8 is a flowchart for explaining a subroutine of the manual setting operation shown in FIG.

[Explanation of symbols]

 1 Control Microcomputer (Control Means) 2 Detection Circuit (Detection Means) 11 Door Open Relay 12 Door Close Relay 13 Motor Brake Relay M DC Motor (Electric Motor) T1, T2 Terminals P1, P2, P3 Input Terminals

Claims (4)

[Claims] 1. A drive control device for an electrically driven object for a vehicle, which is capable of driving an electrically operated object that can be freely moved by a driving force of an electric motor, and detecting means for detecting a moving speed of the electrically operated object; And a control means for driving the electrically driven object by the driving force of the electric motor when the moving speed detected by the vehicle is within a predetermined range. 2. The electric motor is a DC motor that generates an induced electromotive force according to the moving speed of the electrically driven object and responds to the movement of the electrically driven object, and the detection means is one of the electric motors. The drive control device for an electrically driven object for a vehicle according to claim 1, wherein a moving speed of the electrically driven object is detected based on a potential of a terminal. 3. The detection means outputs a detection signal when the potential of the terminal is within a predetermined reference potential range due to the induced electromotive force in a non-driving state of the electric motor, and the control means The drive control device for an electrically driven object for a vehicle according to claim 2, wherein the electric motor is driven when the detection signal is output. 4. The detection means outputs a drive stop signal when the potential of the terminal exceeds a predetermined reference potential due to the induced electromotive force in a driving state of the electric motor, and the control means includes the The drive control device for an electrically driven object for a vehicle according to claim 2 or 3, wherein the drive motor is brought into a non-driving state when a drive stop signal is output.