KR102191274B1 - Outsider mirror apparatus and operating method the same - Google Patents

Abstract

Disclosed are an outside mirror device and a method of operation thereof for preventing damage to a component in the outside mirror device.
To this end, this embodiment extracts the current phase of the motor and/or the elliptical gear by tracking (backtracking) at least one shift information using the phase difference generated by at least one gear or a combination thereof, and And/or a mechanism for controlling the speed of the elliptical gear portion.

Description

The outside mirror device and its operating method TECHNICAL FIELD [OUTSIDER MIRROR APPARATUS AND OPERATING METHOD THE SAME}

The present embodiment relates to an outside mirror device and a method of operating the same, and more particularly, to an outside mirror device for preventing damage to a component in the outside mirror device and a method of operating the same.

In general, outsider mirror devices of a vehicle are provided with outside mirrors on both front and rear sides of a vehicle so that the driver can observe the traffic conditions of the left and right rear sides while driving.

Such an outsider mirror device includes a motor, a circular gear, an actuator driver, and an electronic control unit as well as an outsider mirror.

Among them, the actuator driver serves to apply an operation command to fold (fold) the outsider mirror forward and backward as the motor and the circular gear are operated under the control of the electronic control unit.

However, the conventional actuator driver was able to detect a stall current through an output current monitoring signal according to a control command of the electronic control unit, and then apply an operation command.

Stall Current is a current that applies voltage to the motor and forcibly stops the motor, and it is mechanically repetitively generated when the gear is stopped, and thus provided the cause of burnout to the gear, motor and actuator drivers. .

In addition, if there is an overcurrent protection function in the motor or if it is over a certain torque, the problem is solved by generating slip in the gear.In this case, the existing electronic control unit does not know the exact position and speed of the gear (target shape). It acted as the cause of.

An object of the present embodiment is to provide an outside mirror device and an operation method thereof for accurately grasping the current position and speed of a motor and/or gear by tracking displacement information generated from a gear.

According to one embodiment, an elliptical gear unit having a first elliptical gear connecting a rotation axis of a motor to a first central point and a second elliptical gear connecting a rotation axis of an outsider mirror to a second central point, the outsider mirror When folding (folding), an actuator driver that calculates a phase difference between the first elliptical gear and the second elliptical gear, and tracks at least one displacement information required for speed control of the elliptical gear unit based on the calculated phase difference, and In response to an operation command signal transmitted to the exciter driver, a feedback signal including the displacement information is received, and the current phase of the motor and the elliptical gear is detected based on the received feedback signal, and the speed of the motor and the elliptical gear is It provides an outside mirror device including an electronic control unit for controlling.

The displacement information may be at least one of a phase shift between the first elliptical gear and the second elliptical gear, angular speed shift, torque shift, input current shift of the motor, and output current shift of the actuator driver.

The phase shift may include a phase difference between the first elliptical gear and the second elliptical gear or a phase difference between the first and second elliptical gears.

The actuator driver may track the angular speed shift representing each speed ratio of the first elliptical gear and the second elliptical gear according to the phase difference of the first elliptical gear.

The actuator driver may track the torque shift by summing the angular speed ratios of the first elliptical gear and the second elliptical gear.

The actuator driver may track a variation of the input current of the motor from the variation of torque using a proportional relationship between a torque and a current.

The actuator driver can track the variation of the output current of the actuator driver according to the variation of the input current of the motor, and track the variation of the feedback current of the feedback signal from the variation of the output current using a proportional relationship between the output current and the feedback current. have.

The electronic control unit may detect the current phase and speed by tracking the feedback signal back, and control the speed of the motor and the elliptical gear unit through the detected current phase.

According to an embodiment, the steps of connecting the rotation axis of the motor to the first center point of the first elliptical gear, and connecting the rotation axis of the outsider mirror to the second center point of the second elliptical gear, the outsider mirror folding (folding) ), calculating a phase difference between the first elliptical gear and the second elliptical gear based on the first central point and the second central point, at least one necessary for speed control of the elliptical gear unit based on the calculated phase difference. Tracking displacement information by an actuator driver, receiving a feedback signal including the displacement information at the electronic control unit in response to an operation command signal transmitted to the exciter driver, and the motor based on the received feedback signal And controlling the speed of the motor and the elliptical gear unit by detecting the current phase of the elliptical gear unit.

The displacement information may be at least one of a phase shift between the first elliptical gear and the second elliptical gear, angular speed shift, torque shift, input current shift of the motor, and output current shift of the actuator driver.

In the tracking of the at least one displacement information, the angular speed shift representing each speed ratio of the first elliptical gear and the second elliptical gear according to the phase difference of the first elliptical gear may be tracked.

In the tracking of the at least one displacement information, the torque shift may be tracked by adding the angular speed ratios of the first elliptical gear and the second elliptical gear.

In the step of tracking the at least one displacement information, a variation in input current of the motor may be tracked from the variation in torque using a proportional relationship between a torque and a current.

The tracking of the at least one displacement information includes tracking the output current variation of the actuator driver according to the input current variation of the motor, and the feedback signal from the output current variation using a proportional relationship between the output current and the feedback current. Feedback current variations can be tracked.

The controlling of the current phase and the speed may detect the current phase by tracking the feedback signal back, and control the speed of the motor and the elliptical gear unit through the detected current phase.

As described above, in the present embodiment, the current position of the motor and/or gear (target shape) or the current position of the motor and/or gear (target shape) is identified through the displacement tracking to determine the current position of the motor and/or gear (target shape). By controlling the speed, there is an effect of preventing burnout of motors, gears, and actuator drivers.

In this embodiment, at least one position sensor is added to determine the current position of the existing gear, but it is possible through an algorithm to determine the current position of the motor and/or gear (target shape), so the installation of the position sensor There is an effect that can reduce the cost.

1 is a block diagram showing an example of an outside mirror device according to an embodiment.
2 to 8 are diagrams showing data required for displacement tracking performed by the other outside mirror device of FIG. 1.
9 is a flowchart illustrating a method of operating an outside mirror device according to an exemplary embodiment.
10 is a flow chart showing in more detail step S130 of the operation method of FIG. 9.

Various methods and devices to which the following embodiments are applied will be described in more detail with reference to the drawings. The suffix "part" disclosed in the present specification below is given or used interchangeably in consideration of only the ease of writing the specification, and does not itself have a distinct meaning or role from each other.

It is to be understood that'and/or' disclosed in the following examples includes any and all possible combinations of one or more of the listed related items.

Terms such as "include" or "include" disclosed in the following examples mean that the corresponding component may be included, unless otherwise stated, and do not exclude other components. It should be understood that further comprising other components.

The outside mirror device disclosed in the following embodiments extracts the current phase of the motor and/or elliptical gear unit by tracking (backtracking) at least one shift information using a phase difference generated by at least one gear or a combination thereof. And, thereby providing a mechanism for controlling the speed of the motor and/or the elliptical gear unit.

Hereinafter, a hardware configuration and a method for realizing the above-described mechanism will be described in more detail.

<Configuration example of outside mirror device>

1 is a diagram illustrating an example of an outside mirror device according to an exemplary embodiment, and FIGS. 2 to 8 are graphs required for displacement tracking performed by the other outside mirror device of FIG. 1.

2 to 8 will be supplemented when describing FIG. 1.

Referring to FIG. 1, an outside mirror device 100 according to an embodiment may include a motor 110, an elliptical gear unit 120, an actuator driver 130, and an electronic control unit 140.

First, the motor 110 may be a DC motor that generates rotational force when power is applied.

The elliptical gear unit 120 has a first elliptical gear 121 connected to the rotation shaft 111 connected to the motor 110 to the first center point 122 and the rotation shaft 102 of the outsider mirror 101 as a second center point. A second elliptical gear 124 connected to 123 is provided.

The teeth mounted on the first elliptical gear 121 and the second elliptical gear 124 are rotated by meshing with each other by driving of the motor 110.

The first center point 122 and the second center point 123 may have different positions on the plane of the first elliptical gear 121 and the second elliptical gear 124. Therefore, when the outsider mirror 101 is folded (folded) or unfolded, the first elliptical gear 121 and the second elliptical gear 124 are in the motor 110 due to the different center point positions or the elliptical target shape. The position of the gear may change during rotation.

This may cause a phase difference between the first elliptical gear 121 and the second elliptical gear 124 or between the first elliptical gear 121 and the second elliptical gear 124.

Accordingly, the actuator driver 130 is a phase difference between the first elliptical gear 121 and the second elliptical gear 124 or/and the phase difference of each of the first elliptical gear 121 and the second elliptical gear 124 Calculate

When the x-axis shown in FIG. 2 is the phase of the elliptical gear unit 120 and the y-axis is the angular speed ratio, the phase difference may be obtained through a deflection selected according to the angular speed and the phase of the elliptical gear unit 120.

Subsequently, the actuator driver 130 may track at least one displacement information required for speed control of the elliptical gear unit 120 based on the calculated phase difference.

The tracked displacement information is among the phase shift, angular speed shift, torque shift, input current shift of the motor 110 and output current shift of the actuator driver 130 between the first elliptical gear 121 and the second elliptical gear 124 There may be at least one.

The function of the actuator driver 130 for tracking such displacement information may be as follows.

First, in FIG. 3, the actuator driver 130 represents the respective speed ratios of the first elliptical gear 121 and the second elliptical gear 124 according to the calculated phase difference of the first elliptical gear 121. You can trace it like this.

For example, as shown in FIG. 3, as the first elliptical gear 121 connected to the rotation shaft 111 of the motor 110 rotates, the second elliptical gear 124 meshed with the first elliptical gear 121 is also A phase shift, for example a phase difference of 45.3 degrees, occurs, and each speed shift at this time may occur as in FIG. 3 with a phase difference of 45.3 degrees.

As described above, since the respective speeds of the first elliptical gear 121 and the second elliptical gear 124 change according to the phase of the first elliptical gear 121, the tracked first elliptical gear 121 and the second The result of summing the angular speed ratios of the elliptical gear 124 may be a torque shift.

Accordingly, as shown in FIG. 4, when the two angular velocities are summed, the actuator driver 130 can track a torque shift according to the phase of the first elliptical gear 121.

In other words, assuming that the first elliptical gear 121 and the second elliptical gear 124 of the same weight are rotated, the angular speed ratio of the first elliptical gear 121 and the first elliptical gear 121 as shown in FIG. 4 Since the torque ratio of is proportional, the token through the proportional relationship between the angular speed ratio of the first elliptical gear 121 and the tog ratio of the first elliptical gear 121 with a phase difference of 22.65 degrees, for example, of the first elliptical gear 121 Mutations can be tracked.

Meanwhile, in the motor 110, for example, a DC motor, the input current may change in proportion to the torque when the same voltage is applied. As shown in FIG. 5, when the green line represents the current relationship according to the torque, and the yellow line represents the rotational speed relationship according to the torque, the input current variation and the torque variation of the DC motor 110 may have the same shape. I can confirm.

Based on this, the actuator driver 130 uses the proportional relationship between the torque and the current described above, as shown in FIG. 6, for example, an input of the motor 110 in proportion to the angular speed ratio of the first elliptical gear 121 The input current variation of the motor 110 can be tracked from the current ratio.

The output current of the actuator driver 130 may be changed according to the change of the input current of the motor 110. Accordingly, the actuator driver 130 may track a variation of the output current of the actuator driver 130 in proportion to the input current of the motor 110.

Furthermore, the actuator driver 130 uses a proportional relationship between the output current and the feedback current as shown in FIG. 7 with a phase difference of the first elliptical gear 121, for example, 22.65 degrees, and a feedback signal of a feedback signal proportional from the output current shift. The current transition can be tracked as in FIG. 8.

The tracked output current may be input to the electronic control unit 140 (ECU) through a feedback signal, and the feedback signal is a feedback current in proportion to each speed ratio of the first elliptical gear 121 as shown in FIG. 8. You can see that is appearing.

This feedback signal may be generated as a response to a request from the electronic control unit 140.

That is, the electronic control unit 140 transmits an operation command signal to the actuator driver 130, receives a feedback signal including displacement information in response thereto, and based on the received feedback signal, the motor 110 and the elliptical gear unit The current phase of 120 can be detected.

For example, the electronic control unit 140 analyzes the feedback signal transmitted from the actuator driver 130 to track the feedback signal back, and track the current phase of the motor 110 and the elliptical gear unit 120 through the back tracking. Can be detected.

Here, the backtracking of the feedback signal may mean backtracking of the above-described transition information.

For example, the electronic control unit 140 inversely converts and analyzes the above-described phase-current graph of FIGS. 7 and 8 with respect to the feedback signal, and analyzes the current motor 110 and/or the elliptical gear unit 120. The current phase can be detected.

However, the electronic control unit 140 is not backtracking, but by receiving a feedback signal including the shift information tracked by the actuator driver 130 at a time, the current motor 110 and/or the elliptical gear unit 120 The phase can be detected.

Accordingly, the electronic control unit 140 controls the speed of at least one of the motor 110 and the elliptical gear unit 120 through the current phase of the detected motor 110 and/or the elliptical gear unit 120. .

Here, the meaning of control refers to a process of periodically generating PWM control by compensating for the rotational speed according to the torque according to the performance diagram of the motor 110 can be reduced, through which the constant speed of the motor 110 Control or shift control may be possible.

The generation of the PWM period for analysis of the feedback signal and speed control can be expressed as Equation (1) below.

PWM duty ratio ∝α * Isout +β ... Equation (1)

Α is a rotation speed compensation scale according to a torque ratio, β is a bias between a torque ratio Isout and a PWM duty ratio, and Isout is a feedback current.

As described above, in this embodiment, by controlling the speed of the motor and/or gear (target shape) by grasping the current position of the motor and/or gear (target shape), it is possible to prevent damage to the motor, gear and actuator driver, etc. have.

<Example of how to operate the outside mirror device>

9 is a flowchart illustrating a method of operating an outside mirror device according to an exemplary embodiment, and FIG. 10 is a flowchart illustrating step S130 of the operating method of FIG. 9 in more detail.

2 to 8 and 10 described above will be referred to as an auxiliary when describing FIG. 9.

Referring to FIG. 9, the operation method S100 of the outside mirror apparatus 100 may include steps S110 to S150.

First, in step S110, the rotation shaft 111 of the motor 110 is connected to the first center point 112 of the first elliptical gear 121, and the rotation shaft 102 of the outsider mirror 101 is connected to the second elliptical gear ( It can be connected to the second central point 123 of 124.

When the outside mirror 101 is folded (folded) or unfolded, when power is supplied to the motor 110, the rotation shaft 111 of the motor 110, the first elliptical gear 121 and the second elliptical gear 124 is rotated.

Here, the first center point 122 and the second center point 123 may have different positions on the plane of the first elliptical gear 121 and the second elliptical gear 124.

Therefore, when the outside mirror 101 is folded (folded) or unfolded, the first elliptical gear 121 and the second elliptical gear 124 have different center point positions or the elliptical gear unit 120 due to an elliptical target shape. ) Position can be changed.

This may cause a phase difference between the first elliptical gear 121 and the second elliptical gear 124 or between the first elliptical gear 121 and the second elliptical gear 124.

Accordingly, in step S120, the phase difference between the first elliptical gear 121 and the second elliptical gear 124 or/and the phase difference between the first elliptical gear 121 and the second elliptical gear 124 is determined by the actuator driver 130 , actuator driver).

When the x-axis shown in FIG. 2 is the phase of the elliptical gear unit 120, and the y-axis is the angular speed ratio, the phase difference may be obtained through a deflection selected according to the angular speed and the phase of the elliptical gear unit 120 .

In an embodiment, in step S130, the current phase of the elliptical gear unit 120 and at least one displacement information required for speed control may be tracked based on the calculated phase difference.

The tracked displacement information is among the phase shift, angular speed shift, torque shift, input current shift of the motor 110 and output current shift of the actuator driver 130 between the first elliptical gear 121 and the second elliptical gear 124 There may be at least one.

In order to track such displacement information, step S130 may include steps S131 to S134 as shown in FIG. 10.

First, the actuator driver 130 of the step S131 represents the respective speed variations representing the respective speed ratios of the first elliptical gear 121 and the second elliptical gear 124 according to the calculated phase difference of the first elliptical gear 121. It can be traced as in FIG. 3.

For example, as shown in FIG. 3, as the first elliptical gear 121 connected to the rotation shaft 111 of the motor 110 rotates, the second elliptical gear 124 meshed with the first elliptical gear 121 is also A phase shift, for example a phase difference of 45.3 degrees, occurs, and each speed shift at this time may occur as in FIG. 3 with a phase difference of 45.3 degrees.

As described above, since the respective speeds of the first elliptical gear 121 and the second elliptical gear 124 change according to the phase of the first elliptical gear 121, the tracked first elliptical gear 121 and the second The result of summing the angular speed ratios of the elliptical gear 124 may be a torque shift.

Accordingly, as shown in FIG. 4, when the actuator driver 130 in step S132 adds the two angular velocities, the torque shift according to the phase of the first elliptical gear 121 can be tracked as in FIG. 4.

In other words, assuming that the first elliptical gear 121 and the second elliptical gear 124 of the same weight are rotated, the angular speed ratio of the first elliptical gear 121 and the first elliptical gear 121 as shown in FIG. 4 Since the torque ratio of is proportional, the token through the proportional relationship between the angular speed ratio of the first elliptical gear 121 and the tog ratio of the first elliptical gear 121 with a phase difference of 22.65 degrees, for example, of the first elliptical gear 121 The mutation can be tracked in the actuator driver 130.

Meanwhile, in the motor 110, for example, a DC motor, the input current may change in proportion to the torque when the same voltage is applied. As shown in FIG. 5, when the green line represents the current relationship according to the torque, and the yellow line represents the rotational speed relationship according to the torque, the input current variation and the torque variation of the DC motor 110 may have the same shape. I can confirm.

Based on this, the actuator driver 130 in step S133 uses the torque shift already tracked as in FIG. 6 using the above-described proportional relationship between the torque and the current. The input current variation of the motor 110 can be tracked from the input current ratio of ).

The output current of the actuator driver 130 may be changed according to the change of the input current of the motor 110. Accordingly, the actuator driver 130 may track a variation of the output current of the actuator driver 130 in proportion to the input current of the motor 110.

Furthermore, the actuator driver 130 of the step S134 uses a proportional relationship between the output current and the feedback current as shown in FIG. 7 with a phase difference of the first elliptical gear 121, for example, 22.65 degrees, and the feedback is proportional from the output current shift. The variation of the feedback current of the signal can be tracked as shown in FIG. 8.

The tracked output current may be input to the electronic control unit 140 (ECU) through a feedback signal, and the feedback signal is a feedback current in proportion to each speed ratio of the first elliptical gear 121 as shown in FIG. 8. You can see that is appearing.

This feedback signal may be generated as a response to a request from the electronic control unit 140.

That is, returning to FIG. 9 again, in step S140, the operation command signal generated by the electronic control unit 140 is transmitted to the actuator driver 130, and a feedback signal including displacement information is transmitted from the electronic control unit 140 in response thereto. Can receive.

Finally, in step S150, the electronic control unit 140 may detect the current phases of the motor 110 and the elliptical gear unit 120 based on the received feedback signal.

For example, in step S150, the feedback signal transmitted from the actuator driver 130 is analyzed and the feedback signal is traced back in the electronic control unit 140, and the motor 110 and the elliptical gear unit 120 are traced back through the trace back. The current phase may be detected by the electronic control unit 140.

Here, the backtracking of the feedback signal may mean backtracking of the above-described transition information.

For example, the electronic control unit 140 in step S160 inversely converts and analyzes the above-described phase-current graph of FIGS. 7 and 8 with respect to the feedback signal, and analyzes the current motor 110 and/or the elliptical gear unit ( 120) can be detected.

However, the electronic control unit 140 is not backtracking, but by receiving a feedback signal including the shift information tracked by the actuator driver 130 at a time, the current motor 110 and/or the elliptical gear unit 120 The phase can be detected.

Accordingly, the electronic control unit 140 controls the speed of at least one of the motor 110 and the elliptical gear unit 120 through the current phase of the detected motor 110 and/or the elliptical gear unit 120. .

Here, the meaning of control refers to a process of periodically generating PWM control by compensating for the rotational speed according to the torque according to the performance diagram of the motor 110 can be reduced, through which the constant speed of the motor 110 Control or shift control may be possible.

The generation of the PWM period for analysis of the feedback signal and speed control can be expressed as Equation (2) below.

PWM duty ratio ∝α * Isout +β ... Equation (2)

Α is a rotation speed compensation scale according to a torque ratio, β is a bias between a torque ratio and a PWM duty ratio, and Isout is a feedback current.

As described above, in this embodiment, by controlling the speed of the motor and/or gear (target shape) by grasping the current position of the motor and/or gear (target shape), it is possible to prevent damage to the motor, gear and actuator driver, etc. have.

The operation method of the outside mirror device described above may be implemented in the form of program instructions that can be executed through the above-described hardware components and recorded in a computer-readable recording medium.

The mentioned recording medium may include program instructions, data files, data structures, and the like alone or in combination. The program instructions recorded on the computer-readable recording medium may be specially designed and configured for the present embodiment, or may be known and usable to those skilled in the computer software field.

Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical recording media such as CD-ROMs and DVDs, and magnetic-optical media such as floptical disks. media), and a hardware device specially configured to store and execute program instructions such as ROM, RAM, flash memory, and the like.

Examples of the program instructions may include not only machine language codes such as those produced by a compiler but also high-level language codes that can be executed by a computer using an interpreter or the like.

As described above, embodiments of the present invention have been described with reference to the accompanying drawings, but those of ordinary skill in the art to which the present invention pertains are implemented in other specific forms without changing the technical spirit or essential features of the present invention. You will understand that you can do it. Therefore, the embodiments described above are illustrative and non-limiting in all respects.

100: outside mirror device 101: outside mirror
110: motor 120: oval gear unit
121: first elliptical gear 122: first center point
123: second center point 124: second elliptical gear
130: actuator driver 140: electronic control unit

Claims (15)

An elliptical gear unit having a first elliptical gear connecting the rotation axis of the motor to the first central point and a second elliptical gear connecting the rotation axis of the outsider mirror to the second central point;
When the outsider mirror is folded (folded), the phase difference between the first elliptical gear and the second elliptical gear is calculated, and at least one displacement information required for speed control of the elliptical gear unit is tracked based on the calculated phase difference. Actuator driver; And
In response to an operation command signal transmitted to the actuator driver, a feedback signal including the displacement information is received, and the current phase of the motor or elliptical gear unit is detected based on the received feedback signal to increase the speed of the motor or elliptical gear unit. Electronic control unit to control
Outside mirror device comprising a. The method of claim 1,
The displacement information,
An outside mirror device comprising at least one of a phase shift between the first elliptical gear and the second elliptical gear, angular speed shift, torque shift, input current shift of the motor, and output current shift of the actuator driver. The method of claim 2,
The phase shift is,
An outside mirror device comprising a phase difference between the first elliptical gear and the second elliptical gear or a phase difference between the first elliptical gear and the second elliptical gear. The method of claim 2,
The actuator driver,
An outside mirror device for tracking the angular speed shifts representing angular speed ratios of the first elliptical gear and the second elliptical gear according to the phase difference of the first elliptical gear. The method of claim 4,
The actuator driver,
An outside mirror device for tracking the torque shift by summing the angular speed ratios of the first elliptical gear and the second elliptical gear. The method of claim 5,
The actuator driver,
An outside mirror device for tracking a variation of an input current of the motor from the variation of torque using a proportional relationship between a torque and a current. The method of claim 6,
The actuator driver,
An outside mirror device for tracking the variation of the output current of the actuator driver according to the variation of the input current of the motor, and tracking the variation of the feedback current of the feedback signal from the variation of the output current using a proportional relationship between the output current and the feedback current. The method of claim 1,
The electronic control unit,
An outside mirror device configured to detect the current phase and speed by tracking the feedback signal back, and control the speed of the motor and the elliptical gear unit through the detected current phase. Connecting the rotation axis of the motor to the first center point of the first elliptical gear, and connecting the rotation axis of the outside mirror to the second center point of the second elliptical gear;
Calculating a phase difference between the first elliptical gear and the second elliptical gear based on the first and second central points when the outsider mirror is folded (folded);
Tracking at least one displacement information required for speed control of the elliptical gear unit in an actuator driver based on the calculated phase difference;
Receiving a feedback signal including the displacement information from an electronic control unit in response to an operation command signal transmitted to the actuator driver; And
Controlling the speed of the motor or elliptical gear unit by detecting the current phase of the motor or elliptical gear unit based on the received feedback signal
Operating method of the outside mirror device comprising a. The method of claim 9,
The displacement information,
A method of operating an outside mirror device comprising at least one of a phase shift between the first elliptical gear and the second elliptical gear, angular speed shift, torque shift, input current shift of the motor, and output current shift of the actuator driver. The method of claim 10,
The step of tracking the at least one displacement information,
An operation method of an outside mirror apparatus for tracking the angular speed shifts representing angular speed ratios of the first elliptical gear and the second elliptical gear according to the phase difference of the first elliptical gear. The method of claim 11,
The step of tracking the at least one displacement information,
An operation method of an outside mirror device for tracking the torque shift by summing the angular speed ratios of the first elliptical gear and the second elliptical gear. The method of claim 12,
The step of tracking the at least one displacement information,
A method of operating an outside mirror device for tracking a variation of an input current of the motor from the variation of torque using a proportional relationship between a torque and a current. The method of claim 13,
The step of tracking the at least one displacement information,
Of the outside mirror device tracking the variation of the output current of the actuator driver according to the variation of the input current of the motor, and tracking the variation of the feedback current of the feedback signal from the variation of the output current using a proportional relationship between the output current and the feedback current How it works. The method of claim 9,
Controlling the speed,
An operation method of an outside mirror apparatus for detecting the current phase and speed by tracking the feedback signal back, and controlling the speed of the motor and the elliptical gear unit through the detected current phase.

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