JP2010052468A - Device for canceling automatic travel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To properly reflect an intention of a driver for increasing acceleration in a vehicle behavior even when automatic travel is canceled. <P>SOLUTION: An automatic travel canceling device 10 mounted on an automatic running vehicle is configured to: increase an acceleration pedal reaction in a foot rest position Pr when the automatic travel is set, by a pedal reaction according to a foot rest release pedal reaction characteristic; cancel the automatic travel when a pedal stroke position of an acceleration pedal is returned from the foot rest position Pr; return the pedal reaction in the foot rest position Pr to a pedal reaction according to the foot rest release pedal reaction characteristic; and set, as a driving torque characteristic, an automatic travel driving torque characteristic set as a driving torque characteristic during the automatic travel canceled when the pedal stroke position of the acceleration pedal is returned from the foot rest position Pr, when detecting the intention of the driver to increase acceleration by pressing the acceleration pedal again within a first predetermined time. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an automatic travel cancellation device.

Conventionally, for example, when the automatic running is set, in addition to increasing the reaction force of the accelerator pedal, the throttle operating characteristics are changed according to the pedal stroke of the accelerator pedal according to the execution and release of the automatic running A control device is known (see, for example, Patent Document 1).
According to this control device, when automatic traveling is set, the accelerator pedal functions as a footrest by increasing the reaction force of the accelerator pedal at the predetermined pedal stroke position, and the pedal stroke position is set to a smaller predetermined value. When it falls below, it is determined that the driver's foot is released from the accelerator pedal, and the execution of the automatic traveling is canceled. During this automatic driving, the throttle opening is controlled so that the vehicle speed maintains the target vehicle speed, or the throttle opening is controlled to maintain the inter-vehicle distance from the preceding vehicle. A driving torque at the time of automatic traveling, which is different from a driving torque corresponding to the normal depression amount of the accelerator pedal at the time of execution, is associated with the depression amount of the accelerator pedal.
JP 2000-54860 A

By the way, in the control device according to the above prior art, when the change in the operation characteristic of the throttle and the release of the change are simply switched according to the pedal stroke of the accelerator pedal in accordance with the execution and the release of the automatic travel, the driver There is a risk of feeling uncomfortable with vehicle behavior.
For example, when performing automatic driving, if the driver's feet are released from the accelerator pedal in a relatively short period of time and the automatic driving is released and the driver depresses the accelerator pedal again to accelerate, The normal driving torque, which is different from the driving torque at the time of driving, is switched so as to correspond to the depression amount of the accelerator pedal, and the driver can not expect a sudden change of this driving torque characteristic, driving The problem arises that the person cannot obtain the desired drive torque.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an automatic travel canceling device capable of appropriately reflecting the driver's intention to accelerate the vehicle behavior even when the automatic travel is cancelled. Yes.

  In order to solve the above-described problems and achieve the object, an automatic travel canceling device according to the first aspect of the present invention is mounted on a vehicle capable of automatic travel, and an automatic travel setting means for setting execution of the automatic travel ( For example, when execution of the automatic traveling is set by the speed control device 14) in the embodiment and the automatic traveling setting means, a predetermined first depression position (for example, a footrest position Pr in the embodiment) Accelerator pedal reaction force increasing means for increasing the accelerator pedal reaction force in the vehicle more than normal reaction force (for example, pedal reaction force according to the footrest release pedal reaction force characteristic in the embodiment) (for example, motor control in the embodiment) And the execution of the automatic traveling is canceled when the pedal stroke position of the accelerator pedal is returned from the predetermined first depression position, and the predetermined first depression position is reached. The accelerator pedal reaction force is reset by the accelerator pedal reaction force resetting means (for example, the motor control device 17 in the embodiment) for returning the accelerator pedal reaction force to the normal reaction force, and the accelerator pedal reaction force resetting means. When the driver's intention to accelerate is detected by re-depressing the accelerator pedal within the first predetermined time after returning to the force, it is released when the pedal stroke position of the accelerator pedal is returned from the predetermined first depressed position. The driving torque characteristic maintaining means for resetting the driving torque characteristic during automatic traveling that has been set as the driving torque characteristic when the automatic traveling is performed (for example, the speed control device 14 and the speed change in the embodiment) And a control device 15).

  Furthermore, in the automatic travel canceling device according to the second aspect of the present invention, the drive torque characteristic maintaining means has a first predetermined value after the accelerator pedal reaction force is returned to the normal reaction force by the accelerator pedal reaction force resetting means. Due to re-depression of the accelerator pedal within the time, the pedal stroke position of the accelerator pedal becomes equal to or greater than a predetermined second depression position (for example, the determination threshold position Pt in the embodiment) shallower than the predetermined first depression position. Sometimes it detects that the driver is willing to accelerate.

  Furthermore, the automatic travel canceling device according to the third aspect of the present invention is such that the accelerator pedal is reactivated within a second predetermined time after the accelerator pedal reaction force is returned to the normal reaction force by the accelerator pedal reaction force resetting means. When the pedal stroke position of the accelerator pedal is held at a predetermined second depression position shallower than the predetermined first depression position by depression, it is determined that the driver intends to continue execution of the automatic traveling, The accelerator pedal reaction force increasing means increases the accelerator pedal reaction force at the predetermined first depression position from the normal reaction force and resets the execution of the automatic travel (for example, implementation) In the form of a motor controller 17 and a speed controller 14).

  Furthermore, the automatic travel canceling device according to the fourth aspect of the present invention is an elapsed time acquisition unit that acquires an elapsed time from the time when the accelerator pedal reaction force is returned to the normal reaction force by the accelerator pedal reaction force reset unit. (For example, step S06 in the embodiment), and the driving torque characteristic maintaining means changes the driving torque characteristic from the automatic driving torque characteristic to the normal driving torque characteristic according to the elapsed time. To do.

  Furthermore, in the automatic travel canceling device according to the fifth aspect of the present invention, the accelerator pedal reaction force resetting means before the third predetermined time elapses from when the accelerator pedal reaction force is returned to the normal reaction force or the accelerator pedal. When the accelerator pedal reaction force increasing means performs the first predetermined depression when the return from the depression of the accelerator pedal is executed again before the fourth predetermined time has elapsed since the start of the depression of the pedal. The second automatic travel resetting means (for example, the motor control device 17 and the speed control device in the embodiment) that increases the accelerator pedal reaction force at the position from the normal reaction force and resets the execution of the automatic travel. 14).

  Further, in the automatic travel canceling device according to the sixth aspect of the present invention, the driving torque characteristic maintaining means is canceled at this point when the pedal stroke position of the accelerator pedal is returned from the predetermined first depression position. Further, the transmission state of the transmission set when the automatic traveling is executed is maintained.

  According to the automatic travel canceling device of the first aspect of the present invention, even when the pedal stroke position of the accelerator pedal is returned from the predetermined first depression position, the accelerator pedal is re-depressed within the first predetermined time. When the driver's intention to accelerate is detected, the driver's intention to accelerate can be appropriately reflected in the vehicle behavior by maintaining the driving torque characteristic during automatic driving as the driving torque characteristic, and the driver feels uncomfortable with the vehicle behavior. Can be prevented.

  Furthermore, according to the automatic travel cancellation device according to the second aspect of the present invention, the presence or absence of the driver's intention to accelerate can be accurately detected, and the drive torque characteristics recognized by the driver when the automatic travel is performed. The driver's intention to accelerate can be appropriately reflected in the vehicle behavior in a state where the sense of driving torque characteristics during automatic driving is not weakened.

  Furthermore, according to the automatic travel cancellation device according to the third aspect of the present invention, it is possible to accurately detect whether or not the driver intends to continue the automatic travel execution, and automatically resets the execution of the automatic travel. Thus, for example, it is possible to prevent troublesome labor compared to a case where execution of automatic traveling is reset according to a predetermined operation by the driver.

  Furthermore, according to the automatic traveling cancel device of the fourth aspect of the present invention, the automatic traveling driving torque characteristic is obtained in the transition period when the accelerator pedal reaction force is returned to the normal reaction force by the accelerator pedal reaction force resetting means. By maintaining, it is possible to prevent the driver from feeling uncomfortable with the vehicle behavior even when the driver's sense of the drive torque characteristic cannot follow the rapid fluctuation, and the drive torque characteristic is By changing from the automatic driving torque characteristic to the normal driving torque characteristic according to the elapsed time, the driver's sense of driving torque characteristic changes gradually (that is, from the specific automatic driving torque characteristic) Even when the driving torque characteristic is corrected), it is possible to prevent the driver from feeling uncomfortable with the vehicle behavior.

  Furthermore, according to the automatic travel cancellation device according to the fifth aspect of the present invention, the driver intends to continue the execution of the automatic travel instead of the acceleration when the accelerator pedal is depressed again after the accelerator pedal is depressed again. And automatically resetting the execution of automatic driving, it can be cumbersome compared to, for example, resetting the execution of automatic driving according to a predetermined operation by the driver. Can be prevented.

  Further, according to the automatic travel canceling device of the sixth aspect of the present invention, when the accelerator pedal pedal stroke position is returned from the predetermined first depression position, the automatic travel canceling device is set at the time of execution of the automatic travel canceled at this point. By maintaining the shift state of the transmission that has been used, it is possible to prevent the driver from feeling uncomfortable with the vehicle behavior.

Hereinafter, an automatic travel cancellation device according to an embodiment of the present invention will be described with reference to the accompanying drawings.
As shown in FIG. 1, for example, the automatic travel canceling device 10 according to the present embodiment transmits a driving force of an internal combustion engine (E) to a driving wheel (not shown) of a vehicle via a transmission (T / M). The external sensor 11, the vehicle state sensor 12, the operation switch 13, the speed control device 14, the speed change control device 15, the internal combustion engine control device 16, the motor control device 17, and the pedal reaction force motor 18 are mounted. And a DBW (Drive By Wire) control unit 19 and a DBW drive unit 20.

The external sensor 11 includes a beam scan type radar 21 and a radar control unit 22 using electromagnetic waves such as millimeter waves, for example.
For example, the radar control unit 22 divides the detection target area set in front of the traveling direction of the host vehicle into a plurality of areas in the angular direction, and transmits each electromagnetic wave transmission signal so as to scan each area. A reflection signal generated by reflecting each transmission signal by an object (for example, a preceding vehicle) outside the host vehicle is received and output to the speed control device 14.

  The vehicle state sensor 12 includes, for example, a speed sensor 31 that detects the speed (vehicle speed) of the host vehicle, and a brake pedal sensor 32 that detects whether or not the driver depresses the brake pedal and an operation amount as vehicle information of the host vehicle. An accelerator pedal opening sensor 33 that detects the amount of depression of the accelerator pedal (accelerator opening) by the driver, and a torque sensor 34 that detects torque acting on the accelerator pedal AP when the driver depresses the accelerator pedal AP. And a shift position sensor 35.

  For example, as shown in FIG. 2, the lower part of the accelerator pedal AP is pivotally attached to the bottom of the vehicle body, and one end of an accelerator rod AR is connected to the rear surface of the accelerator pedal AP. The upper part of the accelerator pedal AP can be tilted. The accelerator rod AR is fixed to the rotating shaft of the pedal reaction force motor 18.

  When the driver depresses the accelerator pedal AP, the upper portion of the accelerator pedal AP tilts, and when one end and the other end of the accelerator rod AR rotate around the rotation axis, the rotation angle or stroke amount of the accelerator pedal AP is determined by the accelerator pedal opening sensor. When the electric signal of the detection result is input to the DBW control unit 19, the DBW control unit 19 includes a DBW drive including an electromagnetic actuator (for example, a throttle valve drive motor) that drives the throttle valve. A control current is supplied to the unit 20 to electronically control the throttle valve so that the valve opening degree according to the rotation angle or stroke amount of the accelerator pedal AP is obtained.

  Further, the rotational driving force is transmitted to the accelerator rod AR by the rotational driving of the pedal reaction force motor 18, so that a pedal reaction force that resists the depression of the accelerator pedal AP by the driver is applied to the accelerator pedal AP via the accelerator rod AR. Is done.

  The operation switch 13 outputs a command signal instructing execution and stop of either the follow-up running following the preceding vehicle or the constant speed running at the target speed as the automatic running of the vehicle according to the input operation of the operator.

  The speed control device 14 performs either follow-up traveling or constant-speed traveling according to a command signal output from the operation switch 13, a signal output from the external sensor 11, and a signal output from the vehicle state sensor 12. A command signal is output to the speed change control device 15 and the internal combustion engine control device 16 in order to control the speed in automatic traveling by one side.

  For example, as shown in FIG. 3, the speed control device 14 applies a driving torque that changes in a smooth increasing tendency to the driving wheels of the vehicle according to an increase in the pedal stroke position of the accelerator pedal in accordance with a predetermined normal driving torque characteristic. As described later, when automatic traveling is performed, when the accelerator pedal functions as a footrest with a predetermined pedal stroke position of the accelerator pedal as a footrest position Pr in advance, the speed varies depending on changes in the traveling environment of the vehicle. In order to prevent the fluctuation, the driving torque at the footrest position can be changed to a value corresponding to the driving torque characteristic during automatic traveling different from the predetermined normal driving torque characteristic.

For example, in a normal state such as when traveling on flat ground, when the accelerator pedal functions as a footrest during automatic traveling and the pedal stroke position of the accelerator pedal is maintained at the footrest position Pr, the driving wheel of the vehicle has a predetermined normal A drive torque T0 corresponding to the drive torque characteristic is generated.
In this state, for example, when the travel path of the vehicle changes from a flat ground to an uphill road, an unnecessary traveling speed drop is prevented, and an automatic travel driving torque characteristic (climbing uphill) larger than the drive torque T0 corresponding to the normal drive torque characteristics is prevented. The driving torque Ta (> T0) corresponding to the road) is switched to be generated on the driving wheels of the vehicle.
Similarly, for example, when the vehicle travel path changes from a flat ground to a downhill road, an unnecessary speed increase is prevented, and an automatic travel drive torque characteristic (fallback) smaller than the drive torque T0 corresponding to the normal drive torque characteristic is prevented. The driving torque Tb (<T0) corresponding to the slope) is switched to be generated on the driving wheels of the vehicle.

The speed change control device 15 performs a speed change operation of the transmission (T / M) according to the command signal output from the speed control device 14 and the signal of the detection result of the gear position (that is, the gear ratio) output from the shift position sensor 35. To control.
The internal combustion engine control device 16 controls the operation of the internal combustion engine (E) according to the command signal output from the speed control device 14.

  The motor control device 17 responds to a signal output from the vehicle state sensor 12 and a command signal output from the operation switch 13 (that is, a command signal instructing execution of either follow-up traveling or constant speed traveling). The pedal reaction force motor 18 is applied to control the pedal reaction force against the accelerator pedal against the driver's depression of the accelerator pedal.

  For example, as shown in FIG. 4, the motor control device 17 responds to a predetermined reference pedal reaction force characteristic that gives the accelerator pedal a pedal reaction force that changes in a smooth increasing tendency as the pedal stroke position of the accelerator pedal increases. The predetermined pedal stroke position of the accelerator pedal is set as the footrest position Pr in advance, and the footrest pedal reaction force characteristic is relatively larger than the reference pedal reaction force α according to the reference pedal stroke characteristic at the footrest position Pr during automatic traveling of the vehicle. A predetermined pedal reaction force (footrest pedal reaction force β) is applied to the accelerator pedal so that the accelerator pedal functions as a footrest.

  In order to cause the accelerator pedal to function as a switch for switching between setting and releasing the footrest function, a pedal reaction force corresponding to the reference pedal stroke characteristic is set at a predetermined determination threshold position Pt that is shallower than the footrest position Pr. A predetermined pedal reaction force (footrest release pedal reaction force γ) corresponding to a predetermined footrest release pedal reaction force characteristic that is slightly larger than the pedal reaction force corresponding to the footrest pedal reaction force characteristic. Apply to the accelerator pedal.

  Thus, in a normal state, the difference between the footrest release pedal reaction force γ according to the footrest release pedal reaction force characteristic and the pedal reaction force according to the reference pedal stroke characteristic is a change in the pedal stroke position from the determination threshold position Pt. The pedal reaction force corresponding to the footrest release pedal reaction force characteristic that changes to a smooth increase tendency with the increase of the pedal stroke position from the determination threshold position Pt is applied to the accelerator pedal. .

  Further, in a state where the accelerator pedal functions as a footrest, the difference (β−α) between the footrest pedal reaction force β and the reference pedal reaction force α is a pedaling force required to change the pedal stroke position from the footrest position Pr. The pedal reaction force corresponding to the footrest pedal reaction force characteristic that changes in a smooth increasing tendency with the increase of the pedal stroke position from the footrest position Pr is applied to the accelerator pedal.

  Further, the motor control device 17 cancels the execution of the automatic travel when the pedal stroke position of the accelerator pedal is returned from the footrest position Pr in a state where the accelerator pedal functions as a footrest when the automatic travel is performed, and the footrest position Pr The pedal reaction force (footrest pedal reaction force β) is returned to the pedal reaction force corresponding to the footrest release pedal reaction force characteristic, and the correspondence between the pedal stroke position of the accelerator pedal and the pedal reaction force is changed to the footrest release pedal reaction force characteristic. return. At this time, the speed control device 14 cancels the execution of the automatic travel, and accordingly, the correspondence relationship between the pedal stroke position of the accelerator pedal and the drive torque is determined from a state in which the drive torque characteristics during the automatic travel can be selected. The state is returned to a state where the driving torque characteristic is fixed. Further, the shift control device 15 maintains the shift stage set when the automatic travel is executed.

  In the motor control device 17, the first predetermined time (for example, 2 seconds) after the correspondence relationship between the pedal stroke position of the accelerator pedal and the pedal reaction force is changed from the footrest pedal reaction force characteristic to the footrest release pedal reaction force characteristic. ) When the driver's intention to accelerate is detected by re-depressing the accelerator pedal (for example, when the pedal stroke position of the accelerator pedal is equal to or greater than a predetermined determination threshold position Pt shallower than the footrest position Pr). In other words, the speed control device 14 maintains the drive torque characteristic that was set when the automatic travel was canceled when the accelerator pedal pedal stroke position was returned from the footrest position Pr. As a result, when the automatic driving torque characteristic is set as the driving torque characteristic at the time of execution of automatic driving that is released when the pedal stroke position of the accelerator pedal is returned from the footrest position Pr, this driving during automatic driving is performed. The torque characteristic is set again as the drive torque characteristic.

  In the motor control device 17, the first predetermined time (for example, 2 seconds) after the correspondence relationship between the pedal stroke position of the accelerator pedal and the pedal reaction force is changed from the footrest pedal reaction force characteristic to the footrest release pedal reaction force characteristic. ) In which the driver's intention to accelerate is not detected by re-depressing the accelerator pedal (for example, when the pedal stroke position of the accelerator pedal does not reach the predetermined judgment threshold position Pt shallower than the footrest position Pr). Without maintaining the driving torque characteristic at the time of execution of the released automatic traveling as described above, or performing the process of automatically resetting the footrest pedal reaction force characteristic and automatic traveling as described later, Normal control is executed, for example, in response to a driver's input operation to the operation switch 13 or the like. Etc. and footrest pedal setting of the reaction force characteristic is performed. Further, the control by the shift control device 15 that maintains the gear position that was set when the released automatic travel was executed is released.

  In addition, the motor control device 17 determines that the correspondence between the pedal stroke position of the accelerator pedal and the pedal reaction force is changed from the footrest pedal reaction force characteristic to the footrest release pedal reaction force characteristic for a second predetermined time (for example, 2 seconds). ), When the pedal stroke position of the accelerator pedal is held at a predetermined judgment threshold position Pt that is shallower than the footrest position Pr, the pedal reaction corresponding to the footrest release pedal reaction force characteristic is performed at the footrest position Pr. A predetermined footrest pedal reaction force β corresponding to the footrest pedal reaction force characteristic relatively larger than the force is applied to the accelerator pedal, and the correspondence relationship between the pedal stroke position and the pedal reaction force is changed to the footrest pedal reaction force characteristic. . At this time, the speed control device 14 resets the execution of the automatic traveling, and accordingly, the correspondence relationship between the pedal stroke position of the accelerator pedal and the driving torque is changed to a state in which the driving torque characteristic during automatic traveling can be selected. Is done.

Further, the speed control device 14 detects that the driver intends to accelerate by re-depressing the accelerator pedal after the pedal stroke position of the accelerator pedal is returned from the footrest position Pr, and the pedal stroke position of the accelerator pedal is changed to the footrest position. In a state in which the driving torque characteristic (that is, the driving torque characteristic during automatic traveling) set at the time of execution of the automatic traveling that has been released when it is returned from the position Pr is maintained, the motor controller 17 determines the pedal stroke position of the accelerator pedal. The driving torque characteristic gradually changes from the driving torque characteristic during automatic driving to the normal driving torque characteristic according to the elapsed time after the correspondence with the pedal reaction force is changed from the footrest pedal reaction force characteristic to the footrest release pedal reaction force characteristic. To change.
For example, the time (return time) required to change the driving torque characteristic from the driving torque characteristic during automatic driving to the normal driving torque characteristic is set so as to change in a decreasing trend as the elapsed time increases. Yes.
As a result, in the initial stage of acceleration by re-depression after the pedal stroke position of the accelerator pedal is returned from the footrest position Pr, the driving torque characteristic (for example, driving torque at the time of automatic traveling) set at the time of execution of the canceled automatic traveling The vehicle is accelerated according to the characteristic), and thereafter, the vehicle is accelerated by the drive torque characteristic that gradually changes to the normal drive torque characteristic as time elapses.

  In addition, the motor control device 17 determines whether the correspondence relationship between the pedal stroke position of the accelerator pedal and the pedal reaction force is changed from the footrest pedal reaction force characteristic to the footrest release pedal reaction force characteristic for a third predetermined time (for example, 4 seconds). ) Or after the fourth predetermined time (for example, 2 seconds) from the time when the accelerator pedal is started to be depressed again after the pedal stroke position of the accelerator pedal is returned from the footrest position Pr. When re-returning is executed after re-depression, a predetermined footrest pedal reaction force corresponding to the footrest pedal reaction force characteristic that is relatively larger than the pedal reaction force corresponding to the footrest release pedal reaction force characteristic at the footrest position Pr β is applied to the accelerator pedal, and the pedal stroke position and pedal reaction force The relationship is changed to the footrest pedal reaction force characteristic. At this time, the speed control device 14 resets the execution of the automatic traveling, and accordingly, the correspondence relationship between the pedal stroke position of the accelerator pedal and the driving torque is changed to a state in which the driving torque characteristic during automatic traveling can be selected. Is done.

  The automatic travel cancellation device 10 according to the present embodiment has the above-described configuration. Next, the operation of the automatic travel cancellation device 10 will be described.

First, for example, in step S01 shown in FIG. 5, it is determined whether or not execution of automatic traveling of the vehicle is instructed by a command signal output from the operation switch 13, or the speed change of the own vehicle is equal to or less than a predetermined change including zero. Then, it is determined whether or not a constant pedal stroke position shallower than the predetermined pedal stroke position is maintained for a predetermined time by the driver's depression operation of the accelerator pedal.
If the determination result is “NO”, the process proceeds to step S02, the normal control is performed, and the process proceeds to the end. On the other hand, if the determination result is “YES”, it is determined that the vehicle is in an automatic running state. Then, the process proceeds to step S03.

  In step S03, a predetermined footrest pedal reaction force β relatively larger than the pedal reaction force according to the reference pedal reaction force characteristic and the footrest release pedal reaction force characteristic is set as the pedal reaction force at the footrest position Pr. To do.

In step S04, for example, based on a detection signal output from the accelerator pedal opening sensor 33, it is determined whether or not there is an accelerator pedal depressing operation by the driver from the footrest position Pr.
When the determination result is “NO”, the determination process of step S04 is repeatedly executed.
On the other hand, if this determination is “YES”, the flow proceeds to step S 05.
In step S05, it is determined whether or not the pedal stroke position is less than a predetermined determination threshold position Pt shallower than the footrest position Pr.
If this determination is “NO”, the flow returns to step S 04.
On the other hand, if this determination is “YES”, the flow proceeds to step S 06.

  In step S06, the pedal reaction force (footrest pedal reaction force β) at the footrest position Pr is returned to the pedal reaction force corresponding to the footrest release pedal reaction force characteristic, and the pedal stroke position of the accelerator pedal and the pedal reaction force Return the corresponding relationship to the footrest release pedal reaction force characteristics, cancel the execution of automatic driving, maintain the transmission (T / M) gear stage that was set at the time of automatic driving, and count the timer (not shown) Start.

Then, in step S07, the pedal stroke of the accelerator pedal is caused by re-depressing the accelerator pedal within a first predetermined time (for example, 2 seconds) after the driver depresses the accelerator pedal from the footrest position Pr. It is determined whether or not the position has reached a predetermined determination threshold position Pt that is shallower than the footrest position Pr.
If this determination is “NO”, the flow proceeds to step S 02 described above, and the normal control is executed and the control for maintaining the transmission (T / M) shift stage that was set when the automatic running was executed is released. And go to the end.
On the other hand, if the determination is “YES”, the flow proceeds to step S08.

In step S08, it is determined whether or not the pedal stroke position of the accelerator pedal is maintained at the determination threshold position Pt.
If this determination is “NO”, the flow proceeds to step S 10 described later.
On the other hand, if this determination is “YES”, the flow proceeds to step S 09.

  In step S09, the footrest pedal reaction force characteristic released in step S06 and the automatic running are set and executed again, and the pedal reaction force corresponding to the footrest release pedal reaction force characteristic is determined at the footrest position Pr. A predetermined footrest pedal reaction force β corresponding to a relatively large footrest pedal reaction force characteristic is applied to the accelerator pedal, and the correspondence relationship between the pedal stroke position and the pedal reaction force is changed to the footrest pedal reaction force characteristic. Then, the execution of the automatic travel is reset, and accordingly, the correspondence relationship between the pedal stroke position of the accelerator pedal and the drive torque is changed to a state in which the drive torque characteristic during the automatic travel can be selected, and the process proceeds to the end.

Further, in step S10, with the driver's intention to accelerate, the driving torque characteristic set at the time of execution of the automatic traveling released when the pedal stroke position of the accelerator pedal is returned from the footrest position Pr (that is, in other words, In the state where the automatic driving torque characteristic is maintained, the elapsed time since the correspondence between the pedal stroke position of the accelerator pedal and the pedal reaction force is changed from the footrest pedal reaction force characteristic to the footrest release pedal reaction force characteristic ( In other words, the driving torque characteristic is gradually changed from the automatic driving torque characteristic to the normal driving torque characteristic in accordance with the timer time).
Here, when the drive torque characteristic returns to the normal drive torque characteristic, the control for maintaining the transmission (T / M) shift stage set at the time of execution of the automatic travel is released.

In step S11, a third predetermined time (for example, 4 seconds) after the correspondence relationship between the pedal stroke position of the accelerator pedal and the pedal reaction force is changed from the footrest pedal reaction force characteristic to the footrest release pedal reaction force characteristic. Before the elapse of the fourth predetermined time (for example, 2 seconds) from the time when the accelerator pedal starts to be depressed again after the pedal stroke position is returned from the footrest position Pr. It is determined whether or not a return from the stepping-in is performed again.
If this determination is “NO”, the flow proceeds to the end, and the process ends.
On the other hand, if this determination is “YES”, the flow proceeds to step S12.

In step S12, it is determined whether or not the pedal stroke position of the accelerator pedal is maintained at the determination threshold position Pt.
If this determination is “NO”, the flow proceeds to step S 02 described above.
On the other hand, if this determination is “YES”, the flow proceeds to step S 09 described above.

  As described above, according to the automatic travel cancellation device 10 according to the present embodiment, even when the pedal stroke position of the accelerator pedal is returned from the footrest position Pr, the accelerator pedal is depressed again within the first predetermined time. When the driver's intention to accelerate is detected, the driver's intention to accelerate can be appropriately reflected in the vehicle behavior by maintaining the driving torque characteristic during automatic driving as the driving torque characteristic. It is possible to prevent the user from feeling uncomfortable.

  Furthermore, after the relationship between the pedal stroke position of the accelerator pedal and the pedal reaction force is changed from the footrest pedal reaction force characteristic to the footrest release pedal reaction force characteristic, the accelerator pedal is re-depressed within the first predetermined time, so that By detecting that the driver has an intention to accelerate when the pedal stroke position is equal to or greater than a predetermined determination threshold position Pt shallower than the footrest position Pr, it is possible to accurately detect the presence or absence of the driver's intention to accelerate. In addition, the driver's intention to accelerate is appropriately reflected in the vehicle behavior in a state where the driver's sense of driving torque characteristics (that is, driving torque characteristics at the time of automatic driving) has not faded. be able to.

  Furthermore, after the relationship between the pedal stroke position of the accelerator pedal and the pedal reaction force is changed from the footrest pedal reaction force characteristic to the footrest release pedal reaction force characteristic, the accelerator pedal is re-depressed within the first predetermined time, thereby When the pedal stroke position is held at a predetermined determination threshold position Pt that is shallower than the footrest position Pr, it is determined that the driver intends to continue execution of the automatic travel, whereby the driver continues the automatic travel execution. The presence / absence of the intention can be accurately detected, and the execution of the automatic driving is automatically reset, for example, according to a predetermined operation by the driver (for example, a driver's input operation to the operation switch 13). Therefore, it is possible to prevent troublesome labor compared to the case where execution of automatic traveling is reset.

  Furthermore, by maintaining the driving torque characteristics during automatic driving during the transition period when the correspondence between the pedal stroke position of the accelerator pedal and the pedal reaction force is changed from the footrest pedal reaction force characteristic to the footrest release pedal reaction force characteristic, Even if the driver's sense of driving torque characteristics cannot follow a sudden change (that is, switching from driving torque characteristics during automatic driving to normal driving torque characteristics when automatic driving is released), The driving torque characteristics have been changed from the footrest pedal reaction force characteristics to the footrest release pedal reaction force characteristics. From driving torque characteristics during automatic driving to normal driving torque characteristics according to the elapsed time By changing the driver, the driver's sense of driving torque characteristics changes gradually (that is, even when the driver automatically changes the driving torque characteristics during the specific automatic driving to the normal driving torque characteristics). It is possible to prevent the user from feeling uncomfortable with the behavior.

  In addition, when the accelerator pedal is depressed again and then returned again, it is determined that the driver intends to continue execution of automatic driving instead of acceleration, and automatic driving execution is automatically reset. By doing this, for example, it is possible to prevent troublesome labor compared with the case where execution of automatic traveling is reset according to a predetermined operation by the driver (for example, a driver's input operation to the operation switch 13). be able to.

  Further, when the pedal stroke position of the accelerator pedal is returned from the footrest position Pr, the transmission (T / M) that has been set at the time of execution of the automatic travel released at this time is maintained to maintain the transmission state. It is possible to prevent a person from feeling uncomfortable with the vehicle behavior.

  In the above-described embodiment, the motor control device 17 performs the second predetermined operation after the correspondence relationship between the pedal stroke position of the accelerator pedal and the pedal reaction force is changed from the footrest pedal reaction force characteristic to the footrest release pedal reaction force characteristic. If the pedal stroke position of the accelerator pedal is held at a predetermined judgment threshold position Pt shallower than the footrest position Pr by re-depressing the accelerator pedal within the time, the pedal reaction corresponding to the footrest release pedal reaction force characteristic at the footrest position Pr A predetermined footrest pedal reaction force β corresponding to the footrest pedal reaction force characteristic relatively larger than the force is applied to the accelerator pedal, and the correspondence relationship between the pedal stroke position and the pedal reaction force is changed to the footrest pedal reaction force characteristic. At this time, the speed control device 14 As a result, the correspondence relationship between the pedal stroke position of the accelerator pedal and the driving torque is changed to a state in which the driving torque characteristic at the time of automatic driving can be selected. If the accelerator pedal depressing speed is equal to or greater than the specified value, the driver determines that the driver does not intend to continue the released automatic driving or maintain the footrest pedal reaction force characteristics, and perform normal control. May be executed.

In this modified example, for example, as shown in FIG. 6, when the determination result in step S08 described above is “YES”, the process proceeds to step S08A.
Then, in step S08A, it is determined whether or not the accelerator pedal depressing speed is less than a predetermined value.
If this determination is “YES”, the flow proceeds to step S09.
On the other hand, if this determination is “NO”, the flow proceeds to step S 02.
According to this modification, the driver's intention can be more accurately reflected in the traveling behavior of the vehicle.

It is a lineblock diagram of the automatic run release device concerning an embodiment of the invention. It is a block diagram of the accelerator pedal and pedal reaction force motor which concern on embodiment of this invention. It is a graph which shows an example of the correspondence of the pedal stroke position and drive torque which concern on embodiment of this invention. It is a graph which shows an example of the correspondence of the pedal stroke position and pedal reaction force which concern on embodiment of this invention. It is a flowchart which shows operation | movement of the automatic driving | running | working cancellation | release apparatus which concerns on embodiment of this invention. It is a flowchart which shows operation | movement of the automatic running cancellation apparatus which concerns on the modification of embodiment of this invention.

Explanation of symbols

10 automatic travel cancellation device 14 speed control device (automatic travel setting means, drive torque characteristic maintaining means, second automatic travel resetting means)
15 Shift control device (drive torque characteristic maintaining means)
17 Motor control device (accelerator pedal reaction force increasing means, accelerator pedal reaction force resetting means, automatic travel resetting means, second automatic travel resetting means)
Step S06: Elapsed time acquisition means

Claims (6)

Mounted on vehicles that can run automatically,
Automatic traveling setting means for setting execution of the automatic traveling;
An accelerator pedal reaction force increasing means for increasing an accelerator pedal reaction force at a predetermined first depression position from a normal reaction force when execution of the automatic travel is set by the automatic travel setting means;
An accelerator that cancels execution of the automatic travel when the pedal stroke position of the accelerator pedal is returned from the predetermined first depression position, and returns the accelerator pedal reaction force at the predetermined first depression position to the normal reaction force. Pedal reaction force resetting means;
When the accelerator pedal reaction force is returned to the normal reaction force by the accelerator pedal reaction force reset means and the driver's intention to accelerate by re-depressing the accelerator pedal is detected within a first predetermined time, the accelerator pedal reaction force A driving torque characteristic that maintains the driving torque characteristic during automatic traveling, which has been set as the driving torque characteristic during execution of the automatic traveling released when the pedal stroke position is returned from the predetermined first depression position, as the driving torque characteristic An automatic travel canceling device comprising a maintaining means. The driving torque characteristic maintaining means is configured to reduce the accelerator pedal reaction force by depressing the accelerator pedal within a first predetermined time after the accelerator pedal reaction force is returned to the normal reaction force by the accelerator pedal reaction force resetting means. 2. The automatic travel canceling device according to claim 1, wherein when the stroke position becomes equal to or greater than a predetermined second stepping position shallower than the predetermined first stepping position, it is detected that the driver has an intention to accelerate. When the accelerator pedal reaction force is returned to the normal reaction force by the accelerator pedal reaction force resetting means, the accelerator pedal is re-depressed within a second predetermined time, so that the pedal stroke position of the accelerator pedal is changed to the predetermined first depression. It is determined that the driver intends to continue execution of the automatic travel when held at a predetermined second depressed position shallower than the position, and the accelerator pedal reaction force increasing means is used to The automatic travel canceling device according to claim 1, further comprising an automatic travel resetting unit that increases the accelerator pedal reaction force more than the normal reaction force and resets execution of the automatic travel. . Elapsed time acquisition means for acquiring an elapsed time from the time when the accelerator pedal reaction force is returned to the normal reaction force by the accelerator pedal reaction force resetting means,
The driving torque characteristic maintaining means changes the driving torque characteristic from the driving torque characteristic during automatic traveling to a normal driving torque characteristic according to the elapsed time. The automatic travel cancellation device according to any one of the above. A fourth predetermined time elapses before the third predetermined time elapses from the time when the accelerator pedal reaction force is returned to the normal reaction force by the accelerator pedal reaction force resetting unit or after the start of the re-depression of the accelerator pedal. Before, when the accelerator pedal is returned again from the re-depression, the accelerator pedal reaction force increasing means increases the accelerator pedal reaction force at the predetermined first depression position from the normal reaction force. The automatic travel cancellation device according to any one of claims 1 to 4, further comprising second automatic travel resetting means for resetting execution of the automatic travel. The drive torque characteristic maintaining means is a shift state of the transmission that is set when the automatic travel is canceled when the pedal stroke position of the accelerator pedal is returned from the predetermined first depression position. The automatic travel canceling device according to any one of claims 1 to 5, wherein:

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