KR102598564B1 - System for shifting apparatus and method for transmission control for setting signal adjustment using the same - Google Patents

Abstract

The present invention relates to a dial installed in a main housing to be rotatable in one direction or the other direction, a gear shaft that rotates on a housing axis provided in the main housing as the dial rotates and transmits the rotational force of the dial, and a gear shaft that rotates in the main housing. Possibly coupled, a gear disposed in mesh with the gear teeth of the gear shaft and rotating together as the gear shaft rotates, a potentiometer for detecting rotational displacement of the gear and converting it into an output signal, and fixing the potentiometer, the gear It includes a main PCB that recognizes the shift stage according to the output signal and outputs the recognized shift stage signal to the shift controller.

Description

Shift operation device of SBW system and shift control method according to signal consistency setting using the same {SYSTEM FOR SHIFTING APPARATUS AND METHOD FOR TRANSMISSION CONTROL FOR SETTING SIGNAL ADJUSTMENT USING THE SAME}

The present invention relates to a shift control device for an SBW system and a shift control method using the same to set signal consistency, and more specifically, to an SBW (shift-by-wire) system in which transmission is controlled by electrical signals. , It relates to a shift control device for an SBW system that can reduce costs and improve marketability by applying a gear assembly structure, and a shift control method according to signal consistency setting using the same.

In general, x-by-wire technology is increasingly being adopted to replace mechanical devices in vehicle development.

By having a structure that controls the vehicle electrically, this It has the advantage of being able to be sensed from the vehicle and controlled by integrating the steering system, braking system, transmission system, and suspension system.

In addition, since physical or mechanical connection devices can be greatly eliminated, it is advantageous for the layout of the vehicle, makes assembly of parts easier, improves vehicle crash performance, and makes the vehicle body lighter.

As a representative x-by-wire technology, development and research are underway on steer-by-wire systems, brake-by-wire systems, drive-by-wire systems, and shift-by-wire systems, of which shift-by-wire technology is in progress. The by-wire system (SBW system) is structured so that the transmission is controlled by electrical signals rather than a structure in which a lever (gear rod) and transmission are mechanically combined through a cable or shaft.

In the SBW system, the shift control signal generated by the shift control device is converted into an electrical signal and transmitted to a TCU (Transmission Control Unit), and the TCU operates the transmission (motor, etc.) according to the driver's shift intention and the vehicle's driving situation. It is configured to perform actual shifting by driving the actuator (configured including).

Therefore, in the SBW system, since the transmission is controlled by electrical signals, the shift control device does not need to be limited to the conventional gear rod type. Accordingly, the shift control device of the SBW system is not only the conventional gear rod type, but also a button type, etc. It can also be composed of:

In the SBW system, the shift control device in the form of a gear rod has a similar shape to the conventional mechanical shift control device, so it has the advantage of not giving the driver a sense of heterogeneity. However, as a trade-off, the control method is similar to the conventional structure, highlighting the advantages of the SBW system. There is a problem that cannot be done, and accordingly, the shift operation device of the SBW system, which has a gear rod shape, has the problems raised by the conventional shift operation device (the structure in which the gear rod protrudes is not aesthetically pleasing, the visibility of the shift stage is poor, and vehicle collisions occur). Similar problems are raised, such as the risk of increased damage and the inability to provide storage space or convenience devices in and around the space where the gear rod is mounted.

In addition, the conventional button-type shift control device in the SBW system is structurally more advantageous than the gear rod type in terms of space utilization and reduction of injuries in the event of a vehicle collision, but since it does not provide a feeling of operation when shifting gears, the driver must press the button. There was a problem in that it was difficult to clearly perceive tactilely that the button had been pressed.

The purpose of the present invention is that, as the user rotates the dial, a pair of gears transmits rotational force to the potentiometer coupled to each gear, and converts the transmitted rotation amount of the gear into an electrical signal to change the gear shift. However, by comparing the two potentiometer output signals (voltages) and verifying the consistency so that if the difference between the signals is large, it is judged as an error and the shift stage signal is not transmitted, unintentional shift stage changes are prevented. The aim is to provide a shift control device for an SBW system that can improve safety and marketability and a shift control method based on signal consistency settings using the same.

The shift control device of the SBW system according to the present invention includes a dial rotatably installed in the main housing in one direction or the other, rotating on a housing axis provided in the main housing as the dial is rotated, and transmitting the rotational force of the dial. A gear shaft, rotatably coupled to the main housing, a gear disposed to engage with the gear teeth of the gear shaft and rotating together as the gear shaft rotates, a potentiometer that detects the rotational displacement of the gear and converts it into an output signal, and It is characterized by including a main PCB that fixes the potentiometer, recognizes the shift stage according to the output signal of the gear, and outputs the recognized shift stage signal to the shift controller.

Here, the gear has a first gear engaged with the gear teeth on one side of the gear shaft and has the same size and shape as the first gear, and is arranged in parallel with the first gear and engaged with the gear teeth. Equipped with a second gear.

In addition, the gear has a first gear engaged with the gear teeth on one side of the gear shaft and has the same shape and size as the first gear, and the gear on the other side of the gear shaft so as to be symmetrical with respect to the housing axis. It is provided with a second gear that engages with the teeth.

In addition, the shift controller receives and compares the output signals of the first gear and the second signal transmitted from the potentiometer, and determines a shift error by comparing the difference value of the output signal with a preset setting value.

The gear further includes a notch guide installed on top of the first gear and the second gear to determine whether the notch surface direction of each of the first gear and the second gear is aligned.

On the other hand, the shift control method according to the signal consistency setting using the shift operation device of the SBW system according to the present invention changes the gear shift for the first and second gears respectively transmitted from the potentiometer in the gear neutral position as power is applied to the vehicle. A first error determination step of determining the error in the gear neutral position by outputting the first output signal and the second output signal to the transmission controller, changing the gear neutral position to the gear R position, and changing the gear R position to the gear R position. A second error determination step of determining the error in the gear R position by outputting the first and second output signals for the first gear and the second gear respectively transmitted from the potentiometer to the shift controller, The gear R position is changed to the gear D position, and the first output signal and the second output signal for the first gear and the second gear respectively transmitted from the potentiometer at the gear D position are sent to the shift controller. A third error determination step of outputting and determining an error at the gear D position, and through the shift controller, the first error determination step output from the first error determination step, the second error determination step, and the third error determination step. A consistency setting step of deriving a linearization function by considering the error values for each of the output signal and the second output signal, and selectively setting the initial signal consistency of the potentiometer as the derived output value is within the reference range. It is characterized by

Here, the consistency setting step is a first step of determining whether to transmit the first output signal from the potentiometer as the initial signal consistency is set, and as the first output signal is transmitted, the second output signal from the potentiometer. The second step of determining whether to transmit an output signal, as both the first output signal and the second output signal are transmitted, calculation is made considering the first output signal, the second output signal, and the linearization function. A third step of determining whether the calculated output value is within the reference range, and a fourth step of determining the gear shift stage by referring to the transmission value of the first output signal as the calculated output value is included within the reference range. Provide steps.

At this time, in the fourth step, when the transmission value of the first output signal is output as a transmission value of 0 to 0.1, a shift signal at the gear R position is transmitted to the shift controller according to the preset operating angle - output voltage ratio. .

And, in the fourth step, when the transmission value of the first output signal is output as a transmission value of 0.2 to 0.3, a shift signal at the N gear position is transmitted to the shift controller according to the preset operating angle - output voltage ratio. .

In addition, in the fourth step, when the transmission value of the first output signal is output as a transmission value of 0.7 to 0.8, a shift signal at the N gear position is transmitted to the shift controller according to a preset operating angle - output voltage ratio. .

In addition, in the fourth step, when the transmission value of the first output signal is output as a transmission value of 0.9 to 1.0, a shift signal at the gear D position is transmitted to the shift controller according to the preset operating angle - output voltage ratio. .

Meanwhile, in the consistency setting step, if it is determined that both the first output signal and the second output signal are not transmitted in the first step and the second step, the first mode preset through the shift controller is performed. Let it happen.

Here, the first mode turns on a warning light according to non-sending of the first output signal, shifts to the P gear position through the shift controller when the vehicle speed is below a certain speed, and when the vehicle speed is above a certain speed, the This mode maintains the N gear position corresponding to the initial position when setting the initial signal consistency.

And, if it is determined that the first output signal is not transmitted in the first step and only the second output signal is transmitted in the second step, the second mode is performed through the shift controller.

This second mode is a mode in which a warning light is turned on in response to non-transmission of the first output signal, and a gear shift range is determined by referring to the transmission value of the second output signal through the shift controller.

In addition, in the second mode, when the transmission value of the second output signal is output as a transmission value of 0.9 to 1.0, a shift signal at the gear R position is transmitted to the shift controller according to a preset operating angle - output voltage ratio. .

In addition, in the second mode, when the transmission value of the second output signal is output at a transmission value of 0.7 to 0.8, a shift signal at the N gear position is transmitted to the shift controller according to a preset operating angle - output voltage ratio. .

Here, in the second mode, when the transmission value of the second output signal is output at a transmission value of 0.2 to 0.3, a shift signal at the N gear position is transmitted to the shift controller according to a preset operating angle - output voltage ratio. , when the transmission value of the second output signal is output as a transmission value of 0 to 0.1, a shift signal at the gear D position is transmitted to the shift controller.

And, in the second stage, when it is determined that the second output signal is not transmitted while the first output signal is transmitted in the first stage, the gear shift stage is determined by referring to the transmission value of the first output signal. do.

In addition, in the third step, when both the first output signal and the second output signal are transmitted and the transmitted value is determined to be not within the reference range, a warning light is turned on and the vehicle speed is below a certain speed. Accordingly, the consistency setting step is re-performed.

In the present invention, as the user rotates the dial, a pair of gears transmits rotational force to a potentiometer coupled to each gear, and converts the transmitted rotation amount of the gear into an electrical signal to change the gear shift. However, by comparing the two potentiometer output signals (voltages), if the difference between the signals is large, it is judged to be an error and consistency verification is performed to prevent the shift stage signal from being transmitted, thereby preventing unintended shift stage changes and improving safety and security. It has the effect of improving marketability.

In addition, the present invention has the effect of enabling cost reduction compared to the prior art by applying an SBW system with a gear and potentiometer combination structure instead of the conventional SBW system with a combination structure of a Hall sensor and a magnet.

Figure 1 is a diagram showing a coupled state of the SBW system to the shift control device according to an embodiment of the present invention.
Figure 2 is a diagram showing a disconnected state of the shift operation device of the SBW system according to an embodiment of the present invention.
Figure 3 is a diagram showing the combination of a gear shaft and a gear for the shift operation device of the SBW system according to an embodiment of the present invention.
Figure 4 is a diagram showing a first gear and a second gear for the shift control device of the SBW system according to an embodiment of the present invention.
Figure 5 is a diagram showing a notch guide for the shift control device of the SBW system according to an embodiment of the present invention.
Figure 6 is a graph showing the difference in voltage values of gears for the shift control device of the SBW system according to an embodiment of the present invention.
Figure 7 is a diagram showing an example of a first gear and a second gear for the shift control device of the SBW system according to an embodiment of the present invention.
Figure 8 is a diagram showing a shift control device of a conventional SBW system.
FIG. 9 is a diagram sequentially showing signal consistency settings for a shift control method according to signal consistency settings using a shift operation device of an SBW system according to another embodiment of the present invention.
Figures 10A to 10C are diagrams showing the operation angle - output voltage ratio according to signal consistency settings using the shift operation device of the SBW system according to another embodiment of the present invention.
FIG. 11 is a diagram showing linearization functions for the first output signal and the second output signal according to signal consistency settings using the shift control device of the SBW system according to another embodiment of the present invention.
FIG. 12 is a diagram sequentially showing shift control for a shift control method according to signal consistency setting using a shift operation device of an SBW system according to another embodiment of the present invention.
FIG. 13 is a diagram showing a first mode for a shift control method according to signal consistency setting using a shift control device of an SBW system according to another embodiment of the present invention.
FIG. 14 is a diagram showing a second mode for a shift control method according to signal consistency setting using a shift control device of an SBW system according to another embodiment of the present invention.
FIG. 15 is a diagram showing a third mode for a shift control method according to signal consistency setting using a shift control device of an SBW system according to another embodiment of the present invention.
FIG. 16 is a diagram showing a fourth mode for a shift control method according to signal consistency setting using a shift operation device of an SBW system according to another embodiment of the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings.

The advantages and features of the present invention and how to achieve it will become clear by referring to the embodiments described in detail below along with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms. These embodiments only serve to ensure that the disclosure of the present invention is complete and are within the scope of common knowledge in the technical field to which the present invention pertains. It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims.

Additionally, in describing the present invention, if it is determined that related known techniques may obscure the gist of the present invention, detailed description thereof will be omitted.

Figure 1 is a diagram showing a coupled state to the shift control device of the SBW system according to an embodiment of the present invention, and Figure 2 is a diagram showing a disconnected state of the shift control device of the SBW system according to an embodiment of the present invention. This is a drawing for

And, Figure 3 is a diagram showing the combination of a gear shaft and a gear for the shift control device of the SBW system according to an embodiment of the present invention, and Figure 4 is a diagram showing the combination of the shift control device of the SBW system according to an embodiment of the present invention. It is a drawing showing the first gear and the second gear, and Figure 5 is a drawing showing a notch guide for the shift operation device of the SBW system according to an embodiment of the present invention.

In addition, Figure 6 is a graph showing the difference in voltage values of gears for the shift control device of the SBW system according to an embodiment of the present invention, and Figure 7 is a graph for the shift control device of the SBW system according to an embodiment of the present invention. This is a drawing showing an embodiment of the first gear and the second gear.

Typically, an automatic transmission based on SBW (shift-by-wire) transmits the driver's shift intention as an electric signal to the shift controller through a simple operation of the electronic shift lever, button, or dial, allowing forward (D) and reverse ( There is an advantage that shifting to R), neutral (N), and parking (P) can be performed more easily, and the shift lever can be miniaturized to secure a wide space between the driver's seat and the passenger seat. .

The conventional dial-type electronic shift control device (1) has a structure in which the P, R, N, and D shift stages are selected according to the clockwise rotation of the dial, that is, the R stage is located between the P stage and the N stage. This structure has the disadvantage that when changing from D to R, there is a high risk that the dial will be rotated to P due to poor operation, and in this case, there is a high risk of an accident occurring due to a sudden stop of the vehicle.

In addition, in the case of the conventional dial-type electronic shift control device 1, referring to the enlarged circular portion in the drawing shown in FIG. 8, gears G and G' are configured inside, and these gears G and the magnet (M) coupled to the gear (G') is configured to rotate.

In this conventional dial-type electronic shift control device (1), when the dial (100) is rotated, the magnet (M) rotates together, and the magnetic field change generated according to the rotation amount of the magnet (M) is transmitted to the Hall sensor (S). The rotation amount is measured and transmitted as a signal for shifting, but in this structure, the Hall sensor (S) and magnet (M) may be disadvantageous in terms of cost reduction.

To this end, the shift operation device of the SBW system according to this embodiment includes a dial 100, a gear shaft 200, a gear 300, a potentiometer 400, and a main PCB ( 500).

First, the dial 100 is for changing the gear shift, is coupled to the main housing 10 installed adjacent to the driver in the console inside the vehicle, and is installed to be rotatable clockwise or counterclockwise.

This dial 100 has a knob bracket (not shown) located in a space formed on the upper surface, and the knob bracket (not shown) is fixed to the housing axis 10a of the main housing 10 through a coupling member such as a screw or bolt. combined as much as possible.

The gear shaft 200 is coupled to the dial 100, and as the dial 100 rotates, it rotates together on the housing shaft 10a provided in the main housing 10, and the rotational force of the dial 100 is transferred to the gear 300. It plays a role in conveying.

A circular coupling plate 210 is coupled to the lower part of the gear shaft 200, and gear teeth 210a are formed on the outer peripheral surface of the coupling plate 210.

The gear 300 is rotatably coupled to the main housing 10, and when the gear shaft 200 rotates according to the rotation of the dial 100, the gear 300 engages with the gear teeth 210a and rotates together.

In other words, the gear 300 is configured on one side of the gear shaft 200, as shown in FIG. 3, and is arranged to engage with the gear teeth 210a of the coupling plate 210, so that the gear shaft 200 rotates. Accordingly, they may be able to rotate together.

As shown in FIG. 4, the gear 300 includes a first gear 310 and a second gear 320 configured in parallel.

The first gear 310 is formed in a cylindrical shape, the upper part is composed of gear teeth 310a, and the lower part is composed of a rod 312, and the rod 312 is coupled to the potentiometer 410.

This first gear 310 is engaged with the gear teeth 210a on one side of the gear shaft 200, and accordingly follows a direction opposite to the rotation direction of the gear shaft 200 when the gear shaft 200 rotates. It rotates.

In addition, a damper 314 made of an elastic member such as rubber is provided on the upper part of the first gear 310. This damper 314 is in contact with the upper housing 20 coupled to the upper part of the main housing 10. It is disposed, and the movement in the vertical direction can be fixed by pressing and compressing the first gear 310 in the direction in which it is engaged by the upper housing 20.

In addition, the second gear 320 has the same size and shape as the first gear 310, is arranged side by side on the same line as the first gear 310, and is engaged with the gear teeth 210a.

Here, since the second gear 320 has the same configuration as the first gear 310, description of the configuration will be omitted.

Meanwhile, notches 312a and 322a are formed on the rods 312 and 322 of the first gear 310 and the second gear 320, respectively, and are coupled to the rods 312 and 322 to form the gears 310 and 320. Notch surfaces 412 and 422 matching the notches 312a and 322a are also formed inside the coupling hole (H) of the potentiometer 400, which detects the rotational displacement and converts it into an output signal.

The potentiometer 400 is fixed to the main PCB 500 and when the rods 312 and 322 are respectively inserted into the coupling holes (H), the potentiometer 400 detects the rotational displacement of each of the gears 310 and 320. The output signal is switched. Typically, in the case of an SBW system, when an unintended shift stage adjustment signal is output when the driver changes the shift stage, it may pose a risk to the driver's safety, so each potentiometer (410) , 420), it is important to determine the difference in the output signal according to the detection of the rotational displacement of the gears 310 and 320.

Accordingly, the shift controller 600 connected to the main PCB 500 compares the output signals from each potentiometer 410 and 420, and if the difference value between the output signals is as shown in the circular part of FIG. 6, If the output signal difference value at which a shift error occurs exceeds the preset setting value, it is judged to be a shift error and the signal output for changing the shift stage is not transmitted.

Here, in order to accurately compare the output signals generated according to the rotation amounts of the first gear 310 and the second gear 320, the potentiometer 400 is installed on each load 312 and 322 to match the initial positions. The notches 312a and 322a should be aligned in the same direction.

To this end, the first gear 310 and the second gear 320 may further be provided with a notch guide 330, and this notch guide 330 is used to form the first gear 310, as shown in FIG. 5. and are installed on the top of the first gear 310 and the second gear 320, respectively, to determine whether the notch surface direction with respect to the second gear 320 is aligned.

That is, the notch guide 330 is coupled along the direction of the notches 312a and 322a of the first gear 310 and the second gear 320, so that it is possible to effectively determine whether the positions are aligned, which is the notch ( Since the notch surfaces 412 and 422 of the potentiometer 400 where 312a and 322a are inserted are located at the lower end of the gear 300, it may be difficult to check alignment when assembling the gear 300, so a notch guide ( This is to make it easier to check whether alignment is possible by combining 330).

As a result, the notch guide 330 can visually check whether the notch surfaces 312a and 322a for each rod 312 and 322 are aligned at the same angle, so that the first gear 310 and the second gear This allows accurate comparison of the output signal from the gear 320, and ultimately ensures reliability based on judgment due to shifting errors.

The notch guide 330 may have a structure coupled along the direction of the notches 312a and 322a of the first gear 310 and the second gear 320 as described above, but the first gear 310 and the second gear ( When manufacturing 320), it may be implemented through injection molding, and compared to the notch guide 330 that is coupled in a wedge shape, the design of the first gear 310 and the second gear 320, Spatial constraints can be reduced and ease of application can be increased.

In addition, the second gear 320 has been described as being arranged side by side on the same line as the first gear 310 to detect rotational displacement and outputting output signals respectively, but in addition, as shown in FIG. 7, the housing axis ( They may be engaged with the gear teeth 210a on the other side of the gear shaft 200 so as to be symmetrical with respect to 10a).

This is because the rotational force of the gear shaft 200 is transmitted to the first gear 310 and the second gear 320 from one side and the other side, respectively, based on the housing shaft 10a, causing problems such as distortion of the housing shaft 1a. is prevented in advance to enable stable rotation of the gear shaft 200, and thus the output signal of the rotational displacement detected from the first gear 310 and the second gear 320 can be stably transmitted.

In this embodiment, compared to the conventional dial-type electronic shift control device 1 configured to rotate the magnet M coupled to the gear G and the gear G', the assembly of the gear G and the magnet M Cost reduction can be achieved by applying an assembly structure of the gears 310 and 320 and the potentiometer 400 instead of the structure.

In addition, in this embodiment, the two output signals output from the potentiometer 400 respectively coupled to the rods 312 and 322 are compared, and if the difference between the signals is large, it is judged to be an error and the gear shift signal is not transmitted. Because verification is performed, unintentional gear changes can be prevented.

Hereinafter, Figure 9 is a diagram sequentially showing signal consistency settings for a shift control method according to signal consistency settings using a shift operation device of an SBW system according to another embodiment of the present invention, and Figures 10a to 10c are diagrams according to the present invention. This is a diagram showing the operation angle - output voltage ratio according to signal consistency settings using the shift operation device of the SBW system according to another embodiment of.

And, Figure 11 is a diagram showing the linearization function for the first output signal and the second output signal according to the signal consistency setting using the shift operation device of the SBW system according to another embodiment of the present invention, and Figure 12 is a diagram showing the linearization function for the first output signal and the second output signal. This is a diagram sequentially showing the shift control for the shift control method according to signal consistency setting using the shift operation device of the SBW system according to another embodiment of the invention.

In addition, FIG. 13 is a diagram showing a first mode for a shift control method according to signal consistency setting using a shift operation device of an SBW system according to another embodiment of the present invention, and FIG. 14 is another embodiment of the present invention. It is a diagram showing the second mode of the shift control method according to signal consistency setting using the shift control device of the SBW system according to , and FIG. 15 is a signal using the shift control device of the SBW system according to another embodiment of the present invention. It is a diagram showing a third mode for a shift control method according to consistency settings, and FIG. 16 is a diagram showing a fourth mode for a shift control method according to signal consistency settings using a shift operation device of an SBW system according to another embodiment of the present invention. This is a drawing to show the mode.

As shown in FIG. 9, the signal consistency setting for the shift control method according to the signal consistency setting using the shift operation device of the SBW system according to the present invention will be sequentially described as follows.

With the gear neutral position, that is, the dial 100 positioned at the initial position, as power is applied to the vehicle (S10), the first gear 310 and the second gear 320 transmitted from the potentiometer 400, respectively. The first output signal and the second output signal for are output to the shift controller to determine the error in the gear neutral position.

As shown in FIG. 10A, the pattern using the dial 100 is formed by rotating the dial 100 at a certain angle clockwise (+ angle) and counterclockwise (- angle) based on the initial position (NULL), Shift signals such as N, D, and P are transmitted. At this time, the gear automatically returns to the initial position after rotating clockwise or counterclockwise. In the case of P gear, shifting can be done by pressing the button at the top.

In this way, when shifting is performed, the first output signal and the second output signal for the first gear 310 and the second gear 320 respectively transmitted from the potentiometer 400 are as shown in the graph shown in FIG. 10b. It can be output as a signal, where the X-axis is the operating angle and the Y-axis represents the ratio of output voltage/input voltage.

Here, the reason why the value of the Y axis is set to the voltage ratio of the input and output is because if the shift controller that sends and receives the shift signal applies logic to control the Y axis to a specific value due to the characteristics of various vehicles, its scalability and compatibility are poor.

Meanwhile, the first output signal output from the potentiometer 400 transmits a 0.5 signal at the initial position (0°) and has a linear graph in which the transmitted signal value increases when operated clockwise. And, the second output signal output from the potentiometer 400 transmits a 0.5 signal at the initial position (0°) and has a linear graph in which the transmitted signal value decreases when operated clockwise.

Here, the absolute value of the slope of the transmission graph of the first output signal and the second output signal is the same, and more preferably, the first output signal is set to a positive value and the second output signal is set to a negative value, which includes temperature, humidity, This is because when external environmental factors such as vibration are applied to the potentiometer 400, the influence can be minimized by supplementing in case of reverse phase.

Meanwhile, with the dial 100 positioned at the initial position (S10), the first output signal and the second output signal should each have a value of 0.5, as seen with reference to FIG. 10B.

If the first output value for the first gear 310 transmitted from the potentiometer 400 is 0.5 (S20), determine whether the second output value for the second gear 310 is also at the initial position, that is, 0.5. Do it (S24).

Here, if it is determined that the first output value and the second output value are each outside 0.5, as shown in FIG. 10c, -0.5 is subtracted from the first output value at the N-terminal position to calculate the Xn value (S22 ), the Yn value is calculated by subtracting -0.5 from the second output value (S26).

Afterwards, the error values at the N position corresponding to Xn and Yn are respectively stored, and the shift is operated to the R position (S30).

In this way, when shifting to the R position (S30), as shown in Figure 10c, the first output value must have 0 (S32) and the second output value must have 1 (S36). If not, the error deviating from each value is calculated and stored as Xr and Yr (S34), (S38).

In this way, the error values at the R position are stored as Xr and Yr, and the shift is operated from the R position to the D position (S40).

At this time, at the D position, as shown in Figure 10c, the first output value must have 1 (S42) and the second output value must have 0 (S46). If not, the value deviates from each value. Calculate the errors respectively and save them as Xd and Yd (S44) and (S48).

Finally, the intermediate values are interpolated based on the error values Xn, Xr, Xd and Yn, Yr, It is derived as a linearization function of x) and F(y) (S50).

Here, it is determined whether the values reflecting the linearization error functions F(x) and F(y) in the actual transmission values of the first and second output signals fall within the reference range 1 ± α (S60), and if the values are within the reference range If applicable, the initial signal consistency setting is completed (S70), and if not applicable, the initial sensing values of the first gear 310 and the second gear 320, which output the first and second output values, are It is judged to be defective (S62).

Meanwhile, when the initial consistency setting of the potentiometer 400 with respect to the shift operation device of the SBW system is completed as described above (S100), as shown in FIG. 12, a first output signal is first sent from the potentiometer 400 for shift control. Determine whether is transmitted (S200).

Here, if the first output signal is not transmitted, and as a result of checking whether the second output signal is transmitted at this time (S210), if it is determined that the second output signal is also not transmitted, as shown in FIG. 13, the first mode is performed (S220).

When entering the first mode (S220), the warning lamp is turned on (S222), and the vehicle speed at this time is determined (S224). If the vehicle speed is less than the set speed, for example, 10 km/h, P in the N position By shifting to the first position (S226) and maintaining the N position when the vehicle speed is over 10 km/h (S228), vehicle safety is ensured.

On the contrary, if it is determined that the first output signal is not transmitted from the potentiometer 400 but the second output signal is transmitted (S210), the second mode is performed (S230).

As shown in FIG. 14, when entering the second mode (S230), the warning lamp is turned on (S232), and normal shift control is performed using only the second output signal transmitted from the potentiometer 400.

In other words, when the second transmission value output from the potentiometer 400 is output as a transmission value of 0.9 to 1.0 (S234), a shift signal is transmitted to the R position according to the operation angle - output voltage ratio shown in FIG. 10b. Do it (S234-1).

And, if the second transmission value output from the potentiometer 400 is output as a transmission value of 0.7 to 0.8 (S235), or is output as a transmission value of 0.2 to 0.3 (S236), with reference to FIG. 10b, The shift signal is transmitted to each N position (S235-1) and (S236-1).

In addition, if the second transmission value output from the potentiometer 400 is output as a transmission value of 0 to 0.1 (S237), a shift signal is transmitted to the D position (S237-1), and if this is not the case, the dial Determine whether the P-range button of (100) has been pressed (S238), send a shift signal to the P-range position (S238-1), or, if the P-range button has not been pressed, maintain the current shift range (S238- 2).

Meanwhile, when the first output signal is transmitted from the potentiometer 400 (S200) and the second output signal is also transmitted (S300), the transmission value calculated by considering the first output signal, the second output signal, and the linearization function is Determine whether it is within the reference range, that is, whether the value reflecting the linearization error functions F(x) and F(y) in the actual transmission values of the first and second output signals satisfies 1 ± α (S400) , if satisfied, normal shift control is performed according to the first transmission value range.

At this time, if the first output signal is transmitted from the potentiometer 400 (S200) and the second output signal is not transmitted (S300), the third mode is performed (S310).

Here, in the case of the third mode, the first transmission value is transmitted and the second transmission value is not transmitted, so that after turning on the warning light for safety inspection, normal shift control is performed using only the first output signal. do.

This third mode, when viewed with reference to FIG. 15, reflects the linearization error functions F(x) and F(y) in the actual transmission values of the first and second output signals and satisfies 1 ± α. Accordingly (S400), since the sequential shift control and process are the same, the illustration of the corresponding step will be omitted and detailed description thereof will also be omitted.

In addition, when the first output signal is transmitted from the potentiometer 400 (S200) and the second output signal is also transmitted (S300), a linearization error function F(x) is applied to the actual transmission values of the first output signal and the second output signal. , it is determined whether the value reflecting F(y) satisfies 1 ± α (S400), and if not, the fourth mode is performed (S410).

As shown in FIG. 16, when entering the fourth mode (S410), the warning light is turned on (S412) and the vehicle speed is determined (S414). If the vehicle speed is less than the set speed, for example, 10 km/h. , re-check the shift from the N position to the P position and the signal consistency of the potentiometer 400 (S415), and when the vehicle speed is 10 km/h or more, the N position is maintained (S414-1), Ensure vehicle safety is ensured.

The above state means that the first output signal and the second output signal are input from the potentiometer 400, but the signal consistency is unsatisfactory. If this unsatisfactory state is due to a temporary cause such as a disturbance, environmental condition, etc., normal function is maintained. Since it must be possible to recover, the signal consistency check is performed again (S415), and if it is determined to be a temporary cause (S416), the warning light is canceled and the shift function is performed normally (S417).

Additionally, if it is not a temporary cause but a permanent problem that cannot be improved (S416), vehicle safety cannot be ensured, so the warning light is kept on after shifting to P (S416-1).

Meanwhile, as shown in FIG. 12, a first output signal is transmitted from the potentiometer 400 (S200), a second output signal is also transmitted (S300), and the actual transmission values of the first output signal and the second output signal are If the values reflecting the linearized error functions F(x) and F(y) are all satisfied to be within the reference range of 1 ± α (S400), normal shift control is performed according to the range of the first transmitted value. .

If the transmission value of the first output signal is output as a value of 0 to 0.1 (S500), a shift signal at the gear R position is transmitted to the shift controller according to the operation angle-output voltage ratio in FIG. 10b (S510), When the transmission value of the first output signal is output as a value of 0.2 to 0.3 (S520), an N position shift signal is transmitted to the shift controller according to the operating angle - output voltage ratio (S530).

And, if the transmission value of the first output signal is output as a value of 0.7 to 0.8 (S540), a shift signal at the N gear position is transmitted to the shift controller according to the operation angle-output voltage ratio of FIG. 10b (S550). .

In addition, if the transmission value of the first output signal is output as a value of 0.9 to 1.0 (S560), a shift signal at the gear D position is transmitted to the shift controller according to the operation angle - output voltage ratio in FIG. 10b (S570). .

At this time, if it is determined that the transmission value of the first output signal does not correspond to all of 0 to 0.1, 0.2 to 0.3, 0.7 to 0.8, and 0.9 to 1.0 as described above, the user turns the dial 100 to shift to P gear. It is determined whether the button was pressed (S600).

Here, as a result of the determination in step (S600), if it is determined that the P-range button has been pressed, a P-range shift signal is transmitted to the shift controller (S610), and if it is determined that the P-range button has not been pressed, the current shift range, further Specifically, the N gear shift state is maintained (S620).

In the present invention, as the user rotates the dial, a pair of gears transmits rotational force to a potentiometer coupled to each gear, and converts the transmitted rotation amount of the gear into an electrical signal to change the gear shift. However, by comparing the two potentiometer output signals (voltages), if the difference between the signals is large, it is judged to be an error and consistency verification is performed to prevent the shift stage signal from being transmitted, thereby preventing unintended shift stage changes and improving safety and security. It has the effect of improving marketability.

In addition, the present invention has the effect of enabling cost reduction compared to the prior art by applying an SBW system with a gear and potentiometer combination structure instead of the conventional SBW system with a combination structure of a Hall sensor and a magnet.

The present invention has been described above with reference to the embodiment(s) shown in the drawings, but this is merely illustrative, and various modifications may be made by those skilled in the art. It will be understood that all or part of (s) may be optionally combined. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the attached claims.

10: main housing 20: upper housing
100: Dial 200: Gear Shaft
210: Coupling plate 210a, 310a, 320a: Gear tooth
300: gear 310: first gear
312, 322: Rod 314, 324: Damper
312a, 322a: Notch 320: Second gear
330: Notch guide 400: Potentiometer
412, 422: Notch surface H: Coupling hole

Claims (20)

A dial rotatably installed in the main housing in one direction or the other;
a gear shaft that rotates on a housing axis provided in the main housing as the dial rotates and transmits rotational force of the dial;
a gear rotatably coupled to the main housing, arranged to engage with gear teeth of the gear shaft, and rotating together as the gear shaft rotates;
A potentiometer that detects the rotational displacement of the gear and converts it into an output signal; and
It includes a main PCB that fixes the potentiometer, recognizes the shift stage according to the output signal of the gear, and outputs the recognized shift stage signal to the shift controller,
The gear is,
a first gear coupled to the gear teeth on one side of the gear shaft and including a rod with a notch;
a second gear having the same size and shape as the first gear, disposed in parallel with the first gear, engaged with the gear teeth, and having a rod configured with a notch,
The potentiometer is,
It is provided with a coupling hole for coupling the first gear and the second gear, and the interior of the coupling hole is configured such that notch surfaces matching the notch of the first gear and the notch of the second gear are aligned in the same direction. And
The shift controller is,
Shifting of the SBW system, characterized in that the output signals of each of the first gear and the second gear transmitted from the potentiometer are received and compared, and the difference value of the output signal is compared with a preset setting value to determine a shift error. operating device.
delete According to claim 1,
The gear is,
a first gear engaged with the gear teeth on one side of the gear shaft; and
A second gear having the same shape and size as the first gear and engaging with the gear teeth on the other side of the gear shaft so as to be symmetrical to each other about the housing axis. .
delete delete As power is applied to the vehicle, the first and second output signals for the first and second gears, respectively transmitted from the potentiometer at the gear neutral position, are output to the transmission controller to determine the error at the gear neutral position. A first error judgment step;
The gear is changed from the neutral position to the gear R position, and the first and second output signals for the first gear and the second gear respectively transmitted from the potentiometer at the gear R position are sent to the shift controller. a second error determination step of outputting and determining an error at the gear R position;
The gear R position is changed to the gear D position, and the first output signal and the second output signal for the first gear and the second gear respectively transmitted from the potentiometer at the gear D position are transmitted to the shift controller. A third error determination step of determining the error at the gear D position by outputting and
Through the shift controller, a linearization function is derived by considering the error values for each of the first and second output signals output in the first error determination step, the second error determination step, and the third error determination step. and a consistency setting step of selectively setting the initial signal consistency of the potentiometer as the derived output value falls within the reference range. Shift control according to signal consistency setting using the shift operation device of the SBW system, comprising: method.
According to claim 6,
The consistency setting step is,
A first step of determining whether to transmit the first output signal from the potentiometer as the initial signal consistency is set;
A second step of determining whether to transmit the second output signal from the potentiometer as the first output signal is transmitted;
As both the first output signal and the second output signal are transmitted, it is determined whether the output value calculated by considering the first output signal, the second output signal, and the linearization function is within the reference range. The third step is to do; and
As the output value calculated within the reference range is included, a fourth step of determining the gear shift stage with reference to the transmission value of the first output signal; a signal using a shift operation device of the SBW system, comprising: Shift control method according to consistency settings.
According to claim 7,
The fourth step is,
When the transmission value of the first output signal is output as a transmission value of 0 to 0.1, a shift signal at the gear R position is transmitted to the shift controller according to a preset operating angle - output voltage ratio. Shift control method based on signal consistency settings using a shift control device.
According to claim 7,
The fourth step is,
When the transmission value of the first output signal is output as a transmission value of 0.2 to 0.3, a shift signal at the N gear position is transmitted to the shift controller according to a preset operating angle - output voltage ratio. Shift control method based on signal consistency settings using a shift control device.
According to claim 7,
The fourth step is,
When the transmission value of the first output signal is output as a transmission value of 0.7 to 0.8, a shift signal at the N gear position is transmitted to the shift controller according to a preset operating angle - output voltage ratio. Shift control method based on signal consistency settings using a shift control device.
According to claim 7,
The fourth step is,
When the transmission value of the first output signal is output as a transmission value of 0.9 to 1.0, a shift signal at the gear D position is transmitted to the shift controller according to a preset operating angle - output voltage ratio. Shift control method based on signal consistency settings using a shift control device.
According to claim 7,
The consistency setting step is,
In the first step and the second step, if it is determined that both the first output signal and the second output signal are not transmitted, the SBW is characterized in that a preset first mode is performed through the shift controller. Shift control method based on signal consistency settings using the system's shift control device.
According to claim 12,
The first mode is,
A warning light according to non-sending of the first output signal is turned on, and if the vehicle speed is below a certain speed, the gear is shifted to the P position through the shift controller, and when the vehicle speed is above a certain speed, when setting the initial signal consistency, A shift control method according to signal consistency settings using a shift operation device of an SBW system, characterized in that the mode maintains the N gear position corresponding to the position.
According to claim 7,
SBW, characterized in that when it is determined that the first output signal is not transmitted in the first step and only the second output signal is transmitted in the second step, the second mode is performed through the shift controller. Shift control method based on signal consistency settings using the system's shift control device.
According to claim 14,
The second mode is,
A shift control device of the SBW system, characterized in that the mode is to turn on a warning light according to non-transmission of the first output signal and determine the gear shift stage by referring to the transmission value of the second output signal through the shift controller. Shift control method according to the signal consistency settings used.
According to claim 14,
The second mode is,
When the transmission value of the second output signal is output as a transmission value of 0.9 to 1.0, a shift signal at the gear R position is transmitted to the shift controller according to a preset operating angle - output voltage ratio. Shift control method based on signal consistency settings using a shift control device.
According to claim 14,
The second mode is,
When the transmission value of the second output signal is output as a transmission value of 0.7 to 0.8, a shift signal at the N gear position is transmitted to the shift controller according to a preset operating angle - output voltage ratio. Shift control method based on signal consistency settings using a shift control device.
According to claim 14,
The second mode is,
When the transmission value of the second output signal is output as a transmission value of 0.2 to 0.3, a shift signal at the N gear position is transmitted to the shift controller according to a preset operating angle - output voltage ratio, and the second output signal is When the transmission value is output as a transmission value of 0 to 0.1, a shift control method according to signal consistency setting using a shift operation device of an SBW system, characterized in that a shift signal at the gear D position is transmitted to the shift controller.
According to claim 7,
The second step is,
SBW system, characterized in that, when it is determined that the second output signal is not transmitted while the first output signal is transmitted in the first step, the gear shift stage is determined by referring to the transmission value of the first output signal. Shift control method according to signal consistency setting using a shift operation device.
According to claim 7,
The third step is,
When both the first output signal and the second output signal are transmitted, and the transmitted value is determined to be not within the reference range, a warning light is turned on, and as the vehicle speed falls below a certain speed, the consistency setting step is performed. A shift control method according to signal consistency settings using a shift operation device of an SBW system, characterized in that the shift is performed again.

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